void IndexBuffer::AddFromIndexData(Ogre::IndexData* indexData, const unsigned int offset)
{
// Get vertex count
const unsigned int addedCount = indexData->indexCount;
if(_reserved < _size + addedCount)
{
Reserve(_size + addedCount);
}
Ogre::HardwareIndexBufferSharedPtr hardwareBuffer = indexData->indexBuffer;
const bool use32bitindexes = (hardwareBuffer->getType() == Ogre::HardwareIndexBuffer::IT_32BIT);
if (use32bitindexes)
{
const unsigned int* curIndex = static_cast<unsigned int*>
(hardwareBuffer->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
for(unsigned int k = 0; k < addedCount; ++k)
{
_buffer.push_back(offset + (*curIndex++));
}
}
else
{
const unsigned short* curIndex = static_cast<unsigned short*>
(hardwareBuffer->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
for(unsigned int k = 0; k < addedCount; ++k)
{
_buffer.push_back(offset + static_cast<unsigned int>(*curIndex++));
}
}
_size = _buffer.size();
hardwareBuffer->unlock();
}
void ESKOgre::createFakeEntity(Ogre::SceneManager *mSceneMgr) {
Ogre::MeshPtr msh = Ogre::MeshManager::getSingleton().createManual(name + "_skeleton", XENOVIEWER_RESOURCE_GROUP);
msh->setSkeletonName(name);
Ogre::SubMesh* sub = msh->createSubMesh();
const size_t nVertices = 3;
const size_t nVertCount = 3;
const size_t vbufCount = nVertCount*nVertices;
float *vertices = (float *)malloc(sizeof(float)*vbufCount);
for (size_t i = 0; i < nVertices; i++) {
vertices[i*nVertCount] = 0.0;
vertices[i*nVertCount + 1] = 0.0;
vertices[i*nVertCount + 2] = 0.0;
}
const size_t ibufCount = 3;
unsigned short *faces = (unsigned short *)malloc(sizeof(unsigned short) * ibufCount);
for (size_t i = 0; i < ibufCount; i++) {
faces[i] = i;
}
msh->sharedVertexData = new Ogre::VertexData();
msh->sharedVertexData->vertexCount = nVertices;
Ogre::VertexDeclaration* decl = msh->sharedVertexData->vertexDeclaration;
size_t offset = 0;
decl->addElement(0, offset, Ogre::VET_FLOAT3, Ogre::VES_POSITION);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
Ogre::HardwareVertexBufferSharedPtr vbuf = Ogre::HardwareBufferManager::getSingleton().createVertexBuffer(offset, msh->sharedVertexData->vertexCount, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
vbuf->writeData(0, vbuf->getSizeInBytes(), vertices, true);
Ogre::VertexBufferBinding* bind = msh->sharedVertexData->vertexBufferBinding;
bind->setBinding(0, vbuf);
Ogre::HardwareIndexBufferSharedPtr ibuf = Ogre::HardwareBufferManager::getSingleton().createIndexBuffer(Ogre::HardwareIndexBuffer::IT_16BIT, ibufCount, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
ibuf->writeData(0, ibuf->getSizeInBytes(), faces, true);
sub->useSharedVertices = true;
sub->indexData->indexBuffer = ibuf;
sub->indexData->indexCount = ibufCount;
sub->indexData->indexStart = 0;
msh->_setBounds(Ogre::AxisAlignedBox(-100, -100, -100, 100, 100, 100));
msh->_setBoundingSphereRadius(100);
msh->load();
free(faces);
free(vertices);
skeleton_entity = mSceneMgr->createEntity(name + "_skeleton");
skeleton_node = mSceneMgr->getRootSceneNode()->createChildSceneNode();
skeleton_node->attachObject(skeleton_entity);
skeleton_node->setVisible(false);
}
void processIndexData(IndexData* indexData)
{
if (!mFlipVertexWinding)
{
// Nothing to do.
return;
}
if (indexData->indexCount % 3 != 0)
{
printf("Index number is not a multiple of 3, no vertex winding flipping possible. Skipped.");
return;
}
//print("Flipping index order for vertex winding flipping.", V_HIGH);
Ogre::HardwareIndexBufferSharedPtr buffer = indexData->indexBuffer;
unsigned char* data = static_cast<unsigned char*>(buffer->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
if(buffer->getType() == Ogre::HardwareIndexBuffer::IT_16BIT)
{
// 16 bit
//print("using 16bit indices", V_HIGH);
for (size_t i = 0; i < indexData->indexCount; i+=3)
{
Ogre::uint16 * i0 = (Ogre::uint16*)(data+0 * buffer->getIndexSize());
Ogre::uint16* i2 = (Ogre::uint16*)(data+2 * buffer->getIndexSize());
// flip
Ogre::uint16 tmp = *i0;
*i0 = *i2;
*i2 = tmp;
data += 3 * buffer->getIndexSize();
}
}
else
{
// 32 bit
//print("using 32bit indices", V_HIGH);
for (size_t i = 0; i < indexData->indexCount; i+=3)
{
Ogre::uint32* i0 = (Ogre::uint32*)(data+0 * buffer->getIndexSize());
Ogre::uint32* i2 = (Ogre::uint32*)(data+2 * buffer->getIndexSize());
// flip
Ogre::uint32 tmp = *i0;
*i0 = *i2;
*i2 = tmp;
data += 3 * buffer->getIndexSize();
}
}
buffer->unlock();
}
Ogre::SubMesh *EMDOgre::createOgreSubmesh(EMDTriangles *triangles, Ogre::MeshPtr mesh) {
Ogre::SubMesh *sub = mesh->createSubMesh();
const size_t ibufCount = triangles->faces.size();
unsigned short *faces = (unsigned short *)malloc(sizeof(unsigned short) * ibufCount);
for (size_t i = 0; i<ibufCount; i++) {
faces[i] = triangles->faces[i];
}
Ogre::HardwareIndexBufferSharedPtr ibuf = Ogre::HardwareBufferManager::getSingleton().createIndexBuffer(Ogre::HardwareIndexBuffer::IT_16BIT, ibufCount, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
ibuf->writeData(0, ibuf->getSizeInBytes(), faces, true);
sub->useSharedVertices = true;
sub->indexData->indexBuffer = ibuf;
sub->indexData->indexCount = ibufCount;
sub->indexData->indexStart = 0;
free(faces);
return sub;
}
//------------------------------------------------------------------------------------------------
void VertexIndexToShape::addIndexData(Ogre::IndexData *data, const unsigned int offset)
{
const unsigned int prev_size = mIndexCount;
mIndexCount += (unsigned int)data->indexCount;
unsigned int* tmp_ind = new unsigned int[mIndexCount];
if (mIndexBuffer)
{
memcpy (tmp_ind, mIndexBuffer, sizeof(unsigned int) * prev_size);
delete[] mIndexBuffer;
}
mIndexBuffer = tmp_ind;
const unsigned int numTris = (unsigned int) data->indexCount / 3;
Ogre::HardwareIndexBufferSharedPtr ibuf = data->indexBuffer;
const bool use32bitindexes = (ibuf->getType() == Ogre::HardwareIndexBuffer::IT_32BIT);
unsigned int index_offset = prev_size;
if (use32bitindexes)
{
const unsigned int* pInt = static_cast<unsigned int*>(ibuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
for(unsigned int k = 0; k < numTris; ++k)
{
mIndexBuffer[index_offset ++] = offset + *pInt++;
mIndexBuffer[index_offset ++] = offset + *pInt++;
mIndexBuffer[index_offset ++] = offset + *pInt++;
}
ibuf->unlock();
}
else
{
const unsigned short* pShort = static_cast<unsigned short*>(ibuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
for(unsigned int k = 0; k < numTris; ++k)
{
mIndexBuffer[index_offset ++] = offset + static_cast<unsigned int> (*pShort++);
mIndexBuffer[index_offset ++] = offset + static_cast<unsigned int> (*pShort++);
mIndexBuffer[index_offset ++] = offset + static_cast<unsigned int> (*pShort++);
}
ibuf->unlock();
}
}
void GPUBillboardSet::createVertexDataForVertexShaderOnly(const std::vector<PhotoSynth::Vertex>& vertices)
{
// Setup render operation
mRenderOp.operationType = Ogre::RenderOperation::OT_TRIANGLE_LIST;
mRenderOp.vertexData = OGRE_NEW Ogre::VertexData();
mRenderOp.vertexData->vertexCount = vertices.size() * 4;
mRenderOp.vertexData->vertexStart = 0;
mRenderOp.useIndexes = true;
mRenderOp.indexData = OGRE_NEW Ogre::IndexData();
mRenderOp.indexData->indexCount = vertices.size() * 6;
mRenderOp.indexData->indexStart = 0;
// Vertex format declaration
unsigned short sourceBufferIdx = 0;
Ogre::VertexDeclaration* decl = mRenderOp.vertexData->vertexDeclaration;
size_t currOffset = 0;
decl->addElement(sourceBufferIdx, currOffset, Ogre::VET_FLOAT3, Ogre::VES_POSITION);
currOffset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
decl->addElement(sourceBufferIdx, currOffset, Ogre::VET_COLOUR, Ogre::VES_DIFFUSE);
currOffset += Ogre::VertexElement::getTypeSize(Ogre::VET_COLOUR);
decl->addElement(sourceBufferIdx, currOffset, Ogre::VET_FLOAT2, Ogre::VES_TEXTURE_COORDINATES, 0);
currOffset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT2);
// Create vertex buffer
Ogre::HardwareVertexBufferSharedPtr vbuf = Ogre::HardwareBufferManager::getSingleton().createVertexBuffer(
decl->getVertexSize(sourceBufferIdx),
mRenderOp.vertexData->vertexCount,
Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
// Bind vertex buffer
Ogre::VertexBufferBinding* bind = mRenderOp.vertexData->vertexBufferBinding;
bind->setBinding(sourceBufferIdx, vbuf);
// Fill vertex buffer (see http://www.ogre3d.org/docs/manual/manual_59.html#SEC287)
Ogre::RenderSystem* renderSystem = Ogre::Root::getSingletonPtr()->getRenderSystem();
unsigned char* pVert = static_cast<unsigned char*>(vbuf->lock(Ogre::HardwareBuffer::HBL_DISCARD));
Ogre::Real* pReal;
Ogre::RGBA* pRGBA;
Ogre::VertexDeclaration::VertexElementList elems = decl->findElementsBySource(sourceBufferIdx);
Ogre::VertexDeclaration::VertexElementList::iterator itr;
const Ogre::Vector2 uvs[4] = { Ogre::Vector2( -1.f, 1.f ),
Ogre::Vector2( -1.f, -1.f ),
Ogre::Vector2( 1.f, -1.f ),
Ogre::Vector2( 1.f, 1.f ) };
for (unsigned int i=0; i<vertices.size(); ++i )
{
const PhotoSynth::Vertex& vertex = vertices[i];
for ( unsigned int j=0; j<4; j++ )
{
for (itr=elems.begin(); itr!=elems.end(); ++itr)
{
Ogre::VertexElement& elem = *itr;
if (elem.getSemantic() == Ogre::VES_POSITION)
{
elem.baseVertexPointerToElement(pVert, &pReal);
*pReal = vertex.position.x; *pReal++;
*pReal = vertex.position.y; *pReal++;
*pReal = vertex.position.z; *pReal++;
}
else if (elem.getSemantic() == Ogre::VES_DIFFUSE)
{
elem.baseVertexPointerToElement(pVert, &pRGBA);
renderSystem->convertColourValue(vertex.color, pRGBA);
}
else if (elem.getSemantic() == Ogre::VES_TEXTURE_COORDINATES && elem.getIndex() == 0)
{
elem.baseVertexPointerToElement(pVert, &pReal);
*pReal = uvs[j].x; *pReal++;
*pReal = uvs[j].y; *pReal++;
}
}
// Go to next vertex
pVert += vbuf->getVertexSize();
}
}
vbuf->unlock();
// Create index buffer
if (mRenderOp.indexData->indexCount>=65536)
{
Ogre::HardwareIndexBufferSharedPtr ibuf = Ogre::HardwareBufferManager::getSingleton().createIndexBuffer(
Ogre::HardwareIndexBuffer::IT_32BIT,
mRenderOp.indexData->indexCount,
Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY, false);
mRenderOp.indexData->indexBuffer = ibuf;
Ogre::uint32* indices = static_cast<Ogre::uint32*>(ibuf->lock( Ogre::HardwareBuffer::HBL_DISCARD));
Ogre::uint32 indexFirstVertex = 0;
const Ogre::uint32 inds[6] = { 0, 1, 2, 3, 0, 2 };
for (unsigned int i=0; i<vertices.size(); ++i)
{
for (unsigned int j=0; j<6; ++j)
{
*indices = indexFirstVertex + inds[j];
indices++;
}
indexFirstVertex +=4;
}
ibuf->unlock();
}
else
{
Ogre::HardwareIndexBufferSharedPtr ibuf = Ogre::HardwareBufferManager::getSingleton().createIndexBuffer(
Ogre::HardwareIndexBuffer::IT_16BIT,
mRenderOp.indexData->indexCount,
Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY, false);
mRenderOp.indexData->indexBuffer = ibuf;
Ogre::uint16* indices = static_cast<Ogre::uint16*>( ibuf->lock( Ogre::HardwareBuffer::HBL_DISCARD ) );
Ogre::uint32 indexFirstVertex = 0;
const Ogre::uint16 inds[6] = { 0, 1, 2, 3, 0, 2 };
for ( unsigned int i=0; i<vertices.size(); ++i )
{
for ( unsigned int j=0; j<6; ++j )
{
*indices = indexFirstVertex + inds[j];
indices++;
}
indexFirstVertex +=4;
}
ibuf->unlock();
}
// Set material
this->setMaterial("GPUBillboard");
}
bool ShaderParticleRenderer::allocateBuffers(size_t iNumParticles)
{
// prepare vertex declaration
if (mVertexData->vertexDeclaration->getElementCount() == 0) {
VertexDeclaration* pDecl = mVertexData->vertexDeclaration;
size_t ofs = 0;
ofs += pDecl->addElement(0, ofs, VET_FLOAT4, VES_POSITION).getSize(); // position
if (mVertexFormatColour)
ofs += pDecl->addElement(0, ofs, VET_FLOAT4, VES_DIFFUSE).getSize(); // diffuse colour
// other data are stored in vertex as texture coordinates
ushort ix = 0;
if (mVertexFormatTexture)
ofs += pDecl->addElement(0, ofs, VET_FLOAT2, VES_TEXTURE_COORDINATES, ix++).getSize(); // general texture coord
if (mVertexFormatSize)
ofs += pDecl->addElement(0, ofs, VET_FLOAT2, VES_TEXTURE_COORDINATES, ix++).getSize(); // particle size
if (mVertexFormatRotation || mVertexFormatRotationSpeed) {
if (mVertexFormatRotation && mVertexFormatRotationSpeed)
ofs += pDecl->addElement(0, ofs, VET_FLOAT2, VES_TEXTURE_COORDINATES, ix++).getSize(); // current rotation and rotation speed
else
ofs += pDecl->addElement(0, ofs, VET_FLOAT1, VES_TEXTURE_COORDINATES, ix++).getSize(); // current rotation or rotation speed
}
if (mVertexFormatDirection)
ofs += pDecl->addElement(0, ofs, VET_FLOAT3, VES_TEXTURE_COORDINATES, ix++).getSize(); // particle direction (as speed)
// add packed times
size_t iNumTimes = 0;
if (mVertexFormatTTL) iNumTimes++;
if (mVertexFormatTotalTTL) iNumTimes++;
if (mVertexFormatTimeFragment) iNumTimes++;
if (mVertexFormatTimeFragmentInv) iNumTimes++;
switch(iNumTimes) {
case 1:
ofs += pDecl->addElement(0, ofs, VET_FLOAT1, VES_TEXTURE_COORDINATES, ix++).getSize();
break;
case 2:
ofs += pDecl->addElement(0, ofs, VET_FLOAT2, VES_TEXTURE_COORDINATES, ix++).getSize();
break;
case 3:
ofs += pDecl->addElement(0, ofs, VET_FLOAT3, VES_TEXTURE_COORDINATES, ix++).getSize();
break;
case 4:
ofs += pDecl->addElement(0, ofs, VET_FLOAT4, VES_TEXTURE_COORDINATES, ix++).getSize();
break;
}
// add custom parameters
ofs += pDecl->addElement(0, ofs, VET_FLOAT4, VES_TEXTURE_COORDINATES, ix++).getSize();
assert(ix <= 8);
// cache vertex size
mVertexSize = pDecl->getVertexSize(0);
}
Ogre::HardwareVertexBufferSharedPtr pVB;
if (mVertexData->vertexBufferBinding->isBufferBound(0))
pVB = mVertexData->vertexBufferBinding->getBuffer(0);
// prepare vertex buffer
if (pVB.isNull() || pVB->getNumVertices() < iNumParticles * 4) {
assert(iNumParticles * 4 < 65536); // we are using 16bit index buffer
pVB = Ogre::HardwareBufferManager::getSingleton().createVertexBuffer(mVertexSize, 4 * iNumParticles, Ogre::HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE);
if (pVB.isNull())
return false;
mVertexData->vertexBufferBinding->setBinding(0, pVB);
}
// prepare index buffer
Ogre::HardwareIndexBufferSharedPtr pIB = mIndexData->indexBuffer;
if (pIB.isNull() || pIB->getNumIndexes() < iNumParticles * 6) {
pIB = Ogre::HardwareBufferManager::getSingleton().createIndexBuffer(Ogre::HardwareIndexBuffer::IT_16BIT, iNumParticles * 6, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
if (pIB.isNull())
return false;
mIndexData->indexBuffer = pIB;
// fill
Ogre::uint16* pDataIB = reinterpret_cast<Ogre::uint16*>(pIB->lock(Ogre::HardwareBuffer::HBL_NORMAL));
for (Ogre::uint16 k=0; k<static_cast<Ogre::uint16>(iNumParticles); ++k) {
pDataIB[0] = k*4 + 0;
pDataIB[1] = k*4 + 1;
pDataIB[2] = k*4 + 2;
pDataIB[3] = k*4 + 0;
pDataIB[4] = k*4 + 2;
pDataIB[5] = k*4 + 3;
pDataIB += 6;
}
pIB->unlock();
}
return true;
}
void Renderer::FindClosestPolygon(Ogre::Entity* entity, float& closestDistance,
Ogre::Vector3& position, Ogre::Vector3& normal)
{
closestDistance = std::numeric_limits<float>::max(); // default value (means
// nothing detected)
// Get transformation
Ogre::SceneNode* parentNode = entity->getParentSceneNode();
Ogre::Vector3 parentPos;
Ogre::Quaternion parentOrientation;
Ogre::Vector3 parentScale;
if (parentNode)
{
parentPos = parentNode->_getDerivedPosition();
parentOrientation = parentNode->_getDerivedOrientation();
parentScale = parentNode->_getDerivedScale();
}
else
{
parentPos = Ogre::Vector3::ZERO;
parentOrientation = Ogre::Quaternion::IDENTITY;
parentScale = Ogre::Vector3::UNIT_SCALE;
}
// Handle animated entities
bool isAnimated = entity->hasSkeleton();
if (isAnimated)
{
entity->addSoftwareAnimationRequest(false);
entity->_updateAnimation();
}
// Loop through each submesh
Ogre::MeshPtr mesh = entity->getMesh();
for (uint i = 0; i < mesh->getNumSubMeshes(); ++i)
{
Ogre::SubMesh* subMesh = mesh->getSubMesh(i);
// Ignore anything that isn't a triangle List
if (subMesh->operationType != Ogre::RenderOperation::OT_TRIANGLE_LIST)
continue;
// Get the vertex data
Ogre::VertexData* vertexData;
if (subMesh->useSharedVertices)
{
if (isAnimated)
vertexData = entity->_getSkelAnimVertexData();
else
vertexData = mesh->sharedVertexData;
}
else
{
if (isAnimated)
vertexData = entity->getSubEntity(i)->_getSkelAnimVertexData();
else
vertexData = subMesh->vertexData;
}
// Get the size of one vertex
const Ogre::VertexElement* posEl =
vertexData->vertexDeclaration->findElementBySemantic(Ogre::VES_POSITION);
Ogre::HardwareVertexBufferSharedPtr vBuff =
vertexData->vertexBufferBinding->getBuffer(posEl->getSource());
uint vertexSize = vBuff->getVertexSize();
// Save pointer to first vertex
short* pVertex = (short*)vBuff->lock(Ogre::HardwareBuffer::HBL_READ_ONLY);
short* pStartVertex = pVertex;
// Get the index buffer
// If it is null then skip as it must be a point cloud
Ogre::HardwareIndexBufferSharedPtr iBuff = subMesh->indexData->indexBuffer;
if (iBuff.isNull())
continue;
uint* pLong = (uint*)iBuff->lock(Ogre::HardwareBuffer::HBL_READ_ONLY);
uint16_t* pShort = (uint16_t*)pLong;
// Look through each vertex and check each triangle with the ray
Ogre::Vector3 vertexPos;
Ogre::Vector3 vertex1;
Ogre::Vector3 vertex2;
float* pReal;
uint index;
for (uint k = 0; k < subMesh->indexData->indexCount; k++)
{
// Read index value
if (iBuff->getType() == Ogre::HardwareIndexBuffer::IT_32BIT) // if 32bit indexes
{
index = (uint)pLong[k];
}
else
{
index = (uint)pShort[k];
}
// Read referenced vertex
pVertex = pStartVertex + (vertexSize * index); // calculate pointer
posEl->baseVertexPointerToElement(pVertex, &pReal); // read vertex
vertexPos = Ogre::Vector3(pReal[0], pReal[1], pReal[2]); // read position values
// Apply world transformations
if (parentNode)
vertexPos = (parentOrientation * (vertexPos * parentScale)) + parentPos;
// Figure out triangle and calculate the distance if it's the closest
switch (k % 3)
{
case 0:
vertex1 = vertexPos;
break;
case 1:
vertex2 = vertexPos;
break;
case 2:
RayToTriangleCheck(vertex1, vertex2, vertexPos, closestDistance, position, normal);
break;
default:
break;
}
}
iBuff->unlock();
vBuff->unlock();
}
if (isAnimated)
{
entity->removeSoftwareAnimationRequest(false);
}
}
// Get the mesh information for the given mesh.
// Code found on this forum link: http://www.ogre3d.org/wiki/index.php/RetrieveVertexData
void CollisionTools::GetMeshInformation(const Ogre::MeshPtr mesh,
size_t &vertex_count,
Ogre::Vector3* &vertices,
size_t &index_count,
Ogre::uint32* &indices,
const Ogre::Vector3 &position,
const Ogre::Quaternion &orient,
const Ogre::Vector3 &scale)
{
bool added_shared = false;
size_t current_offset = 0;
size_t shared_offset = 0;
size_t next_offset = 0;
size_t index_offset = 0;
vertex_count = index_count = 0;
// Calculate how many vertices and indices we're going to need
for (unsigned short i = 0; i < mesh->getNumSubMeshes(); ++i)
{
Ogre::SubMesh* submesh = mesh->getSubMesh( i );
// We only need to add the shared vertices once
if(submesh->useSharedVertices)
{
if( !added_shared )
{
vertex_count += mesh->sharedVertexData->vertexCount;
added_shared = true;
}
}
else
{
vertex_count += submesh->vertexData->vertexCount;
}
// Add the indices
index_count += submesh->indexData->indexCount;
}
// Allocate space for the vertices and indices
vertices = new Ogre::Vector3[vertex_count];
indices = new Ogre::uint32[index_count];
added_shared = false;
// Run through the submeshes again, adding the data into the arrays
for ( unsigned short i = 0; i < mesh->getNumSubMeshes(); ++i)
{
Ogre::SubMesh* submesh = mesh->getSubMesh(i);
Ogre::VertexData* vertex_data = submesh->useSharedVertices ? mesh->sharedVertexData : submesh->vertexData;
if((!submesh->useSharedVertices)||(submesh->useSharedVertices && !added_shared))
{
if(submesh->useSharedVertices)
{
added_shared = true;
shared_offset = current_offset;
}
const Ogre::VertexElement* posElem =
vertex_data->vertexDeclaration->findElementBySemantic(Ogre::VES_POSITION);
Ogre::HardwareVertexBufferSharedPtr vbuf =
vertex_data->vertexBufferBinding->getBuffer(posElem->getSource());
unsigned char* vertex =
static_cast<unsigned char*>(vbuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
// There is _no_ baseVertexPointerToElement() which takes an Ogre::Ogre::Real or a double
// as second argument. So make it float, to avoid trouble when Ogre::Ogre::Real will
// be comiled/typedefed as double:
// Ogre::Ogre::Real* pOgre::Real;
float* pReal;
for( size_t j = 0; j < vertex_data->vertexCount; ++j, vertex += vbuf->getVertexSize())
{
posElem->baseVertexPointerToElement(vertex, &pReal);
Ogre::Vector3 pt(pReal[0], pReal[1], pReal[2]);
vertices[current_offset + j] = (orient * (pt * scale)) + position;
}
vbuf->unlock();
next_offset += vertex_data->vertexCount;
}
Ogre::IndexData* index_data = submesh->indexData;
size_t numTris = index_data->indexCount / 3;
Ogre::HardwareIndexBufferSharedPtr ibuf = index_data->indexBuffer;
bool use32bitindexes = (ibuf->getType() == Ogre::HardwareIndexBuffer::IT_32BIT);
Ogre::uint32* pLong = static_cast<Ogre::uint32*>(ibuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
unsigned short* pShort = reinterpret_cast<unsigned short*>(pLong);
size_t offset = (submesh->useSharedVertices)? shared_offset : current_offset;
if ( use32bitindexes )
{
for ( size_t k = 0; k < numTris*3; ++k)
{
indices[index_offset++] = pLong[k] + static_cast<Ogre::uint32>(offset);
}
}
else
{
for ( size_t k = 0; k < numTris*3; ++k)
{
indices[index_offset++] = static_cast<Ogre::uint32>(pShort[k]) +
static_cast<Ogre::uint32>(offset);
}
}
ibuf->unlock();
current_offset = next_offset;
}
}
void NIFMeshLoader::createSubMesh(Ogre::Mesh *mesh, const Nif::NiTriShape *shape)
{
const Nif::NiTriShapeData *data = shape->data.getPtr();
const Nif::NiSkinInstance *skin = (shape->skin.empty() ? NULL : shape->skin.getPtr());
std::vector<Ogre::Vector3> srcVerts = data->vertices;
std::vector<Ogre::Vector3> srcNorms = data->normals;
Ogre::HardwareBuffer::Usage vertUsage = Ogre::HardwareBuffer::HBU_STATIC;
bool vertShadowBuffer = false;
bool geomMorpherController = false;
if(!shape->controller.empty())
{
Nif::ControllerPtr ctrl = shape->controller;
do {
if(ctrl->recType == Nif::RC_NiGeomMorpherController)
{
vertUsage = Ogre::HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY;
vertShadowBuffer = true;
geomMorpherController = true;
break;
}
} while(!(ctrl=ctrl->next).empty());
}
if(skin != NULL)
{
vertUsage = Ogre::HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY;
vertShadowBuffer = true;
// Only set a skeleton when skinning. Unskinned meshes with a skeleton will be
// explicitly attached later.
mesh->setSkeletonName(mName);
// Convert vertices and normals to bone space from bind position. It would be
// better to transform the bones into bind position, but there doesn't seem to
// be a reliable way to do that.
std::vector<Ogre::Vector3> newVerts(srcVerts.size(), Ogre::Vector3(0.0f));
std::vector<Ogre::Vector3> newNorms(srcNorms.size(), Ogre::Vector3(0.0f));
const Nif::NiSkinData *data = skin->data.getPtr();
const Nif::NodeList &bones = skin->bones;
for(size_t b = 0;b < bones.length();b++)
{
Ogre::Matrix4 mat;
mat.makeTransform(data->bones[b].trafo.trans, Ogre::Vector3(data->bones[b].trafo.scale),
Ogre::Quaternion(data->bones[b].trafo.rotation));
mat = bones[b]->getWorldTransform() * mat;
const std::vector<Nif::NiSkinData::VertWeight> &weights = data->bones[b].weights;
for(size_t i = 0;i < weights.size();i++)
{
size_t index = weights[i].vertex;
float weight = weights[i].weight;
newVerts.at(index) += (mat*srcVerts[index]) * weight;
if(newNorms.size() > index)
{
Ogre::Vector4 vec4(srcNorms[index][0], srcNorms[index][1], srcNorms[index][2], 0.0f);
vec4 = mat*vec4 * weight;
newNorms[index] += Ogre::Vector3(&vec4[0]);
}
}
}
srcVerts = newVerts;
srcNorms = newNorms;
}
else
{
Ogre::SkeletonManager *skelMgr = Ogre::SkeletonManager::getSingletonPtr();
if(skelMgr->getByName(mName).isNull())
{
// No skinning and no skeleton, so just transform the vertices and
// normals into position.
Ogre::Matrix4 mat4 = shape->getWorldTransform();
for(size_t i = 0;i < srcVerts.size();i++)
{
Ogre::Vector4 vec4(srcVerts[i].x, srcVerts[i].y, srcVerts[i].z, 1.0f);
vec4 = mat4*vec4;
srcVerts[i] = Ogre::Vector3(&vec4[0]);
}
for(size_t i = 0;i < srcNorms.size();i++)
{
Ogre::Vector4 vec4(srcNorms[i].x, srcNorms[i].y, srcNorms[i].z, 0.0f);
vec4 = mat4*vec4;
srcNorms[i] = Ogre::Vector3(&vec4[0]);
}
}
}
// Set the bounding box first
BoundsFinder bounds;
bounds.add(&srcVerts[0][0], srcVerts.size());
if(!bounds.isValid())
{
float v[3] = { 0.0f, 0.0f, 0.0f };
bounds.add(&v[0], 1);
}
mesh->_setBounds(Ogre::AxisAlignedBox(bounds.minX()-0.5f, bounds.minY()-0.5f, bounds.minZ()-0.5f,
bounds.maxX()+0.5f, bounds.maxY()+0.5f, bounds.maxZ()+0.5f));
mesh->_setBoundingSphereRadius(bounds.getRadius());
// This function is just one long stream of Ogre-barf, but it works
// great.
Ogre::HardwareBufferManager *hwBufMgr = Ogre::HardwareBufferManager::getSingletonPtr();
Ogre::HardwareVertexBufferSharedPtr vbuf;
Ogre::HardwareIndexBufferSharedPtr ibuf;
Ogre::VertexBufferBinding *bind;
Ogre::VertexDeclaration *decl;
int nextBuf = 0;
Ogre::SubMesh *sub = mesh->createSubMesh();
// Add vertices
sub->useSharedVertices = false;
sub->vertexData = new Ogre::VertexData();
sub->vertexData->vertexStart = 0;
sub->vertexData->vertexCount = srcVerts.size();
decl = sub->vertexData->vertexDeclaration;
bind = sub->vertexData->vertexBufferBinding;
if(srcVerts.size())
{
vbuf = hwBufMgr->createVertexBuffer(Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3),
srcVerts.size(), vertUsage, vertShadowBuffer);
vbuf->writeData(0, vbuf->getSizeInBytes(), &srcVerts[0][0], true);
decl->addElement(nextBuf, 0, Ogre::VET_FLOAT3, Ogre::VES_POSITION);
bind->setBinding(nextBuf++, vbuf);
}
// Vertex normals
if(srcNorms.size())
{
vbuf = hwBufMgr->createVertexBuffer(Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3),
srcNorms.size(), vertUsage, vertShadowBuffer);
vbuf->writeData(0, vbuf->getSizeInBytes(), &srcNorms[0][0], true);
decl->addElement(nextBuf, 0, Ogre::VET_FLOAT3, Ogre::VES_NORMAL);
bind->setBinding(nextBuf++, vbuf);
}
// Vertex colors
const std::vector<Ogre::Vector4> &colors = data->colors;
if(colors.size())
{
Ogre::RenderSystem *rs = Ogre::Root::getSingleton().getRenderSystem();
std::vector<Ogre::RGBA> colorsRGB(colors.size());
for(size_t i = 0;i < colorsRGB.size();i++)
{
Ogre::ColourValue clr(colors[i][0], colors[i][1], colors[i][2], colors[i][3]);
rs->convertColourValue(clr, &colorsRGB[i]);
}
vbuf = hwBufMgr->createVertexBuffer(Ogre::VertexElement::getTypeSize(Ogre::VET_COLOUR),
colorsRGB.size(), Ogre::HardwareBuffer::HBU_STATIC);
vbuf->writeData(0, vbuf->getSizeInBytes(), &colorsRGB[0], true);
decl->addElement(nextBuf, 0, Ogre::VET_COLOUR, Ogre::VES_DIFFUSE);
bind->setBinding(nextBuf++, vbuf);
}
// Texture UV coordinates
size_t numUVs = data->uvlist.size();
if (numUVs)
{
size_t elemSize = Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT2);
for(size_t i = 0; i < numUVs; i++)
decl->addElement(nextBuf, elemSize*i, Ogre::VET_FLOAT2, Ogre::VES_TEXTURE_COORDINATES, i);
vbuf = hwBufMgr->createVertexBuffer(decl->getVertexSize(nextBuf), srcVerts.size(),
Ogre::HardwareBuffer::HBU_STATIC);
std::vector<Ogre::Vector2> allUVs;
allUVs.reserve(srcVerts.size()*numUVs);
for (size_t vert = 0; vert<srcVerts.size(); ++vert)
for(size_t i = 0; i < numUVs; i++)
allUVs.push_back(data->uvlist[i][vert]);
vbuf->writeData(0, elemSize*srcVerts.size()*numUVs, &allUVs[0], true);
bind->setBinding(nextBuf++, vbuf);
}
// Triangle faces
const std::vector<short> &srcIdx = data->triangles;
if(srcIdx.size())
{
ibuf = hwBufMgr->createIndexBuffer(Ogre::HardwareIndexBuffer::IT_16BIT, srcIdx.size(),
Ogre::HardwareBuffer::HBU_STATIC);
ibuf->writeData(0, ibuf->getSizeInBytes(), &srcIdx[0], true);
sub->indexData->indexBuffer = ibuf;
sub->indexData->indexCount = srcIdx.size();
sub->indexData->indexStart = 0;
}
// Assign bone weights for this TriShape
if(skin != NULL)
{
Ogre::SkeletonPtr skel = Ogre::SkeletonManager::getSingleton().getByName(mName);
const Nif::NiSkinData *data = skin->data.getPtr();
const Nif::NodeList &bones = skin->bones;
for(size_t i = 0;i < bones.length();i++)
{
Ogre::VertexBoneAssignment boneInf;
boneInf.boneIndex = skel->getBone(bones[i]->name)->getHandle();
const std::vector<Nif::NiSkinData::VertWeight> &weights = data->bones[i].weights;
for(size_t j = 0;j < weights.size();j++)
{
boneInf.vertexIndex = weights[j].vertex;
boneInf.weight = weights[j].weight;
sub->addBoneAssignment(boneInf);
}
}
}
const Nif::NiTexturingProperty *texprop = NULL;
const Nif::NiMaterialProperty *matprop = NULL;
const Nif::NiAlphaProperty *alphaprop = NULL;
const Nif::NiVertexColorProperty *vertprop = NULL;
const Nif::NiZBufferProperty *zprop = NULL;
const Nif::NiSpecularProperty *specprop = NULL;
const Nif::NiWireframeProperty *wireprop = NULL;
bool needTangents = false;
shape->getProperties(texprop, matprop, alphaprop, vertprop, zprop, specprop, wireprop);
std::string matname = NIFMaterialLoader::getMaterial(data, mesh->getName(), mGroup,
texprop, matprop, alphaprop,
vertprop, zprop, specprop,
wireprop, needTangents);
if(matname.length() > 0)
sub->setMaterialName(matname);
// build tangents if the material needs them
if (needTangents)
{
unsigned short src,dest;
if (!mesh->suggestTangentVectorBuildParams(Ogre::VES_TANGENT, src,dest))
mesh->buildTangentVectors(Ogre::VES_TANGENT, src,dest);
}
// Create a dummy vertex animation track if there's a geom morpher controller
// This is required to make Ogre create the buffers we will use for software vertex animation
if (srcVerts.size() && geomMorpherController)
mesh->createAnimation("dummy", 0)->createVertexTrack(1, sub->vertexData, Ogre::VAT_MORPH);
}
void Utils::GetMeshInformation(
const Ogre::MeshPtr mesh,
size_t &vertexCount,
Ogre::Vector3* &vertices,
size_t &indexCount,
unsigned* &indices)
{
bool addShared = false;
size_t currentOffset = 0;
size_t shared_offset = 0;
size_t nextOffset = 0;
size_t indexOffset = 0;
vertexCount = indexCount = 0;
for ( unsigned short i = 0; i < mesh->getNumSubMeshes(); ++i) {
Ogre::SubMesh* submesh = mesh->getSubMesh(i);
if(submesh->useSharedVertices) {
if( !addShared ) {
vertexCount += mesh->sharedVertexData->vertexCount;
addShared = true;
}
}
else {
vertexCount += submesh->vertexData->vertexCount;
}
indexCount += submesh->indexData->indexCount;
}
vertices = new Ogre::Vector3[vertexCount];
indices = new unsigned[indexCount];
addShared = false;
for (unsigned short i = 0; i < mesh->getNumSubMeshes(); ++i) {
Ogre::SubMesh* submesh = mesh->getSubMesh(i);
Ogre::VertexData* vertexData = submesh->useSharedVertices ? mesh->sharedVertexData : submesh->vertexData;
if ((!submesh->useSharedVertices) || (submesh->useSharedVertices && !addShared)) {
if(submesh->useSharedVertices) {
addShared = true;
shared_offset = currentOffset;
}
const Ogre::VertexElement* posElem =
vertexData->vertexDeclaration->findElementBySemantic(Ogre::VES_POSITION);
Ogre::HardwareVertexBufferSharedPtr vbuf =
vertexData->vertexBufferBinding->getBuffer(posElem->getSource());
unsigned char* vertex =
static_cast<unsigned char*>(vbuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
float* pReal;
for( size_t j = 0; j < vertexData->vertexCount; ++j, vertex += vbuf->getVertexSize()) {
posElem->baseVertexPointerToElement(vertex, &pReal);
Ogre::Vector3 pt(pReal[0], pReal[1], pReal[2]);
vertices[currentOffset + j] = pt;
}
vbuf->unlock();
nextOffset += vertexData->vertexCount;
}
Ogre::IndexData* indexData = submesh->indexData;
size_t numTris = indexData->indexCount / 3;
Ogre::HardwareIndexBufferSharedPtr ibuf = indexData->indexBuffer;
bool use32bitindexes = (ibuf->getType() == Ogre::HardwareIndexBuffer::IT_32BIT);
unsigned long* pLong = static_cast<unsigned long*>(ibuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
unsigned short* pShort = reinterpret_cast<unsigned short*>(pLong);
size_t offset = (submesh->useSharedVertices)? shared_offset : currentOffset;
if ( use32bitindexes ) {
for ( size_t k = 0; k < numTris*3; ++k) {
indices[indexOffset++] = pLong[k] + static_cast<unsigned long>(offset);
}
}
else {
for ( size_t k = 0; k < numTris*3; ++k) {
indices[indexOffset++] = static_cast<unsigned long>(pShort[k]) +
static_cast<unsigned long>(offset);
}
}
ibuf->unlock();
currentOffset = nextOffset;
}
}
void RoR::GfxEnvmap::SetupEnvMap()
{
m_rtt_texture = Ogre::TextureManager::getSingleton().getByName("EnvironmentTexture");
for (int face = 0; face < NUM_FACES; face++)
{
m_render_targets[face] = m_rtt_texture->getBuffer(face)->getRenderTarget();
m_cameras[face] = gEnv->sceneManager->createCamera("EnvironmentCamera-" + TOSTRING(face));
m_cameras[face]->setAspectRatio(1.0);
m_cameras[face]->setProjectionType(Ogre::PT_PERSPECTIVE);
m_cameras[face]->setFixedYawAxis(false);
m_cameras[face]->setFOVy(Ogre::Degree(90));
m_cameras[face]->setNearClipDistance(0.1f);
m_cameras[face]->setFarClipDistance(gEnv->mainCamera->getFarClipDistance());
Ogre::Viewport* v = m_render_targets[face]->addViewport(m_cameras[face]);
v->setOverlaysEnabled(false);
v->setClearEveryFrame(true);
v->setBackgroundColour(gEnv->mainCamera->getViewport()->getBackgroundColour());
m_render_targets[face]->setAutoUpdated(false);
}
m_cameras[0]->setDirection(+Ogre::Vector3::UNIT_X);
m_cameras[1]->setDirection(-Ogre::Vector3::UNIT_X);
m_cameras[2]->setDirection(+Ogre::Vector3::UNIT_Y);
m_cameras[3]->setDirection(-Ogre::Vector3::UNIT_Y);
m_cameras[4]->setDirection(-Ogre::Vector3::UNIT_Z);
m_cameras[5]->setDirection(+Ogre::Vector3::UNIT_Z);
if (App::diag_envmap.GetActive())
{
// create fancy mesh for debugging the envmap
Ogre::Overlay* overlay = Ogre::OverlayManager::getSingleton().create("EnvMapDebugOverlay");
if (overlay)
{
Ogre::Vector3 position = Ogre::Vector3::ZERO;
float scale = 1.0f;
Ogre::MeshPtr mesh = Ogre::MeshManager::getSingletonPtr()->createManual("cubeMapDebug", Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
// create sub mesh
Ogre::SubMesh* sub = mesh->createSubMesh();
// Initialize render operation
sub->operationType = Ogre::RenderOperation::OT_TRIANGLE_LIST;
//
sub->useSharedVertices = true;
mesh->sharedVertexData = new Ogre::VertexData;
sub->indexData = new Ogre::IndexData;
// Create vertex declaration
size_t offset = 0;
mesh->sharedVertexData->vertexDeclaration->addElement(0, offset, Ogre::VET_FLOAT3, Ogre::VES_POSITION);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
mesh->sharedVertexData->vertexDeclaration->addElement(0, offset, Ogre::VET_FLOAT3, Ogre::VES_TEXTURE_COORDINATES);
// Create and bind vertex buffer
mesh->sharedVertexData->vertexCount = 14;
Ogre::HardwareVertexBufferSharedPtr vertexBuffer =
Ogre::HardwareBufferManager::getSingleton().createVertexBuffer(
mesh->sharedVertexData->vertexDeclaration->getVertexSize(0),
mesh->sharedVertexData->vertexCount,
Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
mesh->sharedVertexData->vertexBufferBinding->setBinding(0, vertexBuffer);
// Vertex data
static const float vertexData[] = {
// Position Texture coordinates // Index
0.0, 2.0, -1.0, 1.0, 1.0, // 0
0.0, 1.0, -1.0, -1.0, 1.0, // 1
1.0, 2.0, -1.0, 1.0, -1.0, // 2
1.0, 1.0, -1.0, -1.0, -1.0, // 3
2.0, 2.0, 1.0, 1.0, -1.0, // 4
2.0, 1.0, 1.0, -1.0, -1.0, // 5
3.0, 2.0, 1.0, 1.0, 1.0, // 6
3.0, 1.0, 1.0, -1.0, 1.0, // 7
4.0, 2.0, -1.0, 1.0, 1.0, // 8
4.0, 1.0, -1.0, -1.0, 1.0, // 9
1.0, 3.0, -1.0, 1.0, 1.0, // 10
2.0, 3.0, 1.0, 1.0, 1.0, // 11
1.0, 0.0, -1.0, -1.0, 1.0, // 12
2.0, 0.0, 1.0, -1.0, 1.0, // 13
};
// Fill vertex buffer
float* pData = static_cast<float*>(vertexBuffer->lock(Ogre::HardwareBuffer::HBL_DISCARD));
for (size_t vertex = 0, i = 0; vertex < mesh->sharedVertexData->vertexCount; vertex++)
{
// Position
*pData++ = position.x + scale * vertexData[i++];
*pData++ = position.y + scale * vertexData[i++];
*pData++ = 0.0;
// Texture coordinates
*pData++ = vertexData[i++];
*pData++ = vertexData[i++];
*pData++ = vertexData[i++];
}
vertexBuffer->unlock();
// Create index buffer
sub->indexData->indexCount = 36;
Ogre::HardwareIndexBufferSharedPtr indexBuffer =
Ogre::HardwareBufferManager::getSingleton().createIndexBuffer(
Ogre::HardwareIndexBuffer::IT_16BIT,
sub->indexData->indexCount,
Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
sub->indexData->indexBuffer = indexBuffer;
// Index data
static const Ogre::uint16 indexData[] = {
// Indices // Face
0, 1, 2, // 0
2, 1, 3, // 1
2, 3, 4, // 2
4, 3, 5, // 3
4, 5, 6, // 4
6, 5, 7, // 5
6, 7, 8, // 6
8, 7, 9, // 7
10, 2, 11, // 8
11, 2, 4, // 9
3, 12, 5, // 10
5, 12, 13, // 11
};
// Fill index buffer
indexBuffer->writeData(0, indexBuffer->getSizeInBytes(), indexData, true);
mesh->_setBounds(Ogre::AxisAlignedBox::BOX_INFINITE);
mesh->_setBoundingSphereRadius(10);
mesh->load();
Ogre::Entity* e = gEnv->sceneManager->createEntity(mesh->getName());
e->setCastShadows(false);
e->setRenderQueueGroup(Ogre::RENDER_QUEUE_OVERLAY - 1);
e->setVisible(true);
e->setMaterialName("tracks/EnvMapDebug");
Ogre::SceneNode* mDebugSceneNode = new Ogre::SceneNode(gEnv->sceneManager);
mDebugSceneNode->attachObject(e);
mDebugSceneNode->setPosition(Ogre::Vector3(0, 0, -5));
mDebugSceneNode->setFixedYawAxis(true, Ogre::Vector3::UNIT_Y);
mDebugSceneNode->setVisible(true);
mDebugSceneNode->_update(true, true);
mDebugSceneNode->_updateBounds();
overlay->add3D(mDebugSceneNode);
overlay->show();
}
}
}
void
TerrainTileEditable::createGeometry(TerrainData* data, int xbase, int zbase, int xsize, int zsize)
{
destoryGeometry();
// build the material backet map
MaterialBucketMap materialBucketMap;
buildMaterialBucketMap(materialBucketMap);
// Build renderables
for (MaterialBucketMap::const_iterator im = materialBucketMap.begin(); im != materialBucketMap.end(); ++im)
{
const MaterialBucket* mb = &im->second;
TerrainTileEditableRenderable* renderable = new TerrainTileEditableRenderable(this, mb->layerIndex);
mRenderables.push_back(renderable);
size_t numQuads = mb->grids.size();
size_t indexCount = numQuads * 6;
renderable->mMaterial = mb->material;
Ogre::HardwareIndexBufferSharedPtr indexBuffer =
Ogre::HardwareBufferManager::getSingleton().createIndexBuffer(
Ogre::HardwareIndexBuffer::IT_16BIT,
indexCount,
Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
Ogre::IndexData* indexData = new Ogre::IndexData;
indexData->indexBuffer = indexBuffer;
indexData->indexStart = 0;
indexData->indexCount = indexCount;
renderable->mRenderOp.indexData = indexData;
renderable->mRenderOp.vertexData = mVertexDatas[mb->layerIndex];
renderable->mRenderOp.operationType = Ogre::RenderOperation::OT_TRIANGLE_LIST;
renderable->mRenderOp.useIndexes = true;
ushort* pIndices = static_cast<ushort*>(indexBuffer->lock(Ogre::HardwareBuffer::HBL_DISCARD));
for (GridIdList::const_iterator igrid = mb->grids.begin(); igrid != mb->grids.end(); ++igrid)
{
size_t grid = *igrid;
const TerrainData::GridInfo& gridInfo = data->mGridInfos[grid];
const TerrainData::Corner* corners = gridInfo.getCorners();
int x = grid % data->mXSize - xbase;
int z = grid / data->mXSize - zbase;
assert(x < xsize && z < zsize);
size_t index = (z*xsize + x) * 4;
*pIndices++ = index + corners[1];
*pIndices++ = index + corners[0];
*pIndices++ = index + corners[2];
*pIndices++ = index + corners[1];
*pIndices++ = index + corners[2];
*pIndices++ = index + corners[3];
}
indexBuffer->unlock();
}
for (size_t layerIndex = 0; layerIndex < 2; ++layerIndex)
{
fillLayerBuffer(layerIndex, mVertexDatas.back()->vertexBufferBinding->getBuffer(layerIndex+1));
}
mGeometryOutOfDate = false;
}
CompoundCollisionShape* CollisionShapeManager::PerformConvexDecomposition(const String& Name, Graphics::Mesh* ObjectMesh, Whole Depth, Real CPercent, Real PPercent, Boole UseAllSubmeshes)
{
//new submesh friendly code
Ogre::MeshPtr myMesh = ObjectMesh->_GetInternalMesh();
Ogre::SubMesh* subMesh = NULL;
Ogre::IndexData* indexData = NULL;
Ogre::VertexData* vertexData = NULL;
Boole use32bitindexes = false;
unsigned int currtriCount = 0;
unsigned int triCount = 0;
unsigned int vCount = 0;
unsigned int iCount = 0;
Whole VertPrevSize = 0;
Whole IndiPrevSize = 0;
Boole SharedVerts = myMesh->getSubMesh(0)->useSharedVertices;
Whole* VertPerSubMesh = NULL;
if(UseAllSubmeshes)
{
VertPerSubMesh = new Whole[myMesh->getNumSubMeshes()];
for( Whole X = 0 ; X < myMesh->getNumSubMeshes() ; X++ )
{
vCount += SharedVerts ? myMesh->sharedVertexData->vertexCount : myMesh->getSubMesh(X)->vertexData->vertexCount;
iCount += myMesh->getSubMesh(X)->indexData->indexCount;
VertPerSubMesh[X] = SharedVerts ? myMesh->sharedVertexData->vertexCount : myMesh->getSubMesh(X)->vertexData->vertexCount;
}
}else{
vCount += SharedVerts ? myMesh->sharedVertexData->vertexCount : myMesh->getSubMesh(0)->vertexData->vertexCount;
iCount += myMesh->getSubMesh(0)->indexData->indexCount;
}
Ogre::Vector3* vertices = new Ogre::Vector3[vCount];
unsigned int* indices = new unsigned int[iCount];
for( unsigned short int SubMeshIndex = 0 ; SubMeshIndex < myMesh->getNumSubMeshes() ; SubMeshIndex++ )
{
if( !UseAllSubmeshes && (SubMeshIndex > 0) )
break;
if( SharedVerts && (SubMeshIndex > 0) )
break;
subMesh = myMesh->getSubMesh(SubMeshIndex);
indexData = subMesh->indexData;
vertexData = SharedVerts ? myMesh->sharedVertexData : myMesh->getSubMesh(SubMeshIndex)->vertexData;
const Ogre::VertexElement* posElem = vertexData->vertexDeclaration->findElementBySemantic(Ogre::VES_POSITION);
Ogre::HardwareVertexBufferSharedPtr vBuffer = vertexData->vertexBufferBinding->getBuffer(posElem->getSource());
Ogre::HardwareIndexBufferSharedPtr iBuffer = indexData->indexBuffer;
currtriCount=indexData->indexCount/3;
triCount+=(indexData->indexCount/3);
unsigned char* vertex = static_cast<unsigned char*>(vBuffer->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
float* pReal = NULL;
for( size_t j = 0 ; j < vertexData->vertexCount ; j++, vertex += vBuffer->getVertexSize() )
{
posElem->baseVertexPointerToElement(vertex, &pReal);
vertices[j + VertPrevSize].x = *pReal++;
vertices[j + VertPrevSize].y = *pReal++;
vertices[j + VertPrevSize].z = *pReal++;
}
vBuffer->unlock();
size_t index_offset = 0;
use32bitindexes = (iBuffer->getType() == Ogre::HardwareIndexBuffer::IT_32BIT);
unsigned long* pLong = static_cast<unsigned long*>(iBuffer->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
unsigned short* pShort = reinterpret_cast<unsigned short*>(pLong);
if( use32bitindexes )
{
for (size_t k = 0; k < currtriCount*3; ++k)
{
if(SubMeshIndex > 0 && VertPerSubMesh) {
indices[index_offset+IndiPrevSize] = pLong[k] + VertPerSubMesh[SubMeshIndex];
}else{
indices[index_offset+IndiPrevSize] = pLong[k];
}
index_offset++;
}
}else{
for( size_t k = 0 ; k < currtriCount * 3 ; ++k )
{
if(SubMeshIndex > 0 && VertPerSubMesh) {
indices[index_offset+IndiPrevSize] = (static_cast<unsigned long>(pShort[k])) + VertPerSubMesh[SubMeshIndex];
}else{
indices[index_offset+IndiPrevSize] = static_cast<unsigned long>(pShort[k]);
}
index_offset++;
}
}
iBuffer->unlock();
VertPrevSize += vertexData->vertexCount;
IndiPrevSize += indexData->indexCount;
}
ConvexDecomposition::DecompDesc desc;
desc.mVcount = vertexData->vertexCount;
desc.mTcount = triCount;
desc.mVertices = &vertices[0].x;
desc.mIndices = &indices[0];
unsigned int maxv = 16;
float skinWidth = 0.0;
desc.mDepth = Depth;
desc.mCpercent = CPercent;
desc.mPpercent = PPercent;
desc.mMaxVertices = maxv;
desc.mSkinWidth = skinWidth;
Internal::MezzConvexDecomposition decomp;
desc.mCallback = &decomp;
ConvexBuilder cb(desc.mCallback);
cb.process(desc);
CompoundCollisionShape* compound = new CompoundCollisionShape(Name);
btTransform trans;
trans.setIdentity();
for (int i=0;i<decomp.m_convexShapes.size();i++)
{
std::stringstream namestream;
namestream << Name << "Child" << i;
Vector3 centroid(decomp.m_convexCentroids[i]);
ConvexHullCollisionShape* convexShape = new ConvexHullCollisionShape(namestream.str(),decomp.m_convexShapes[i]);
compound->AddChildShape(convexShape,centroid);
}
delete[] vertices;
delete[] indices;
delete[] VertPerSubMesh;
return compound;
}
void GeometryFactory::generateSphericDome (const Ogre::String &name, int segments, DomeType type) {
// Return now if already exists
if (Ogre::MeshManager::getSingleton ().resourceExists (name)) {
return;
}
Ogre::LogManager::getSingleton ().logMessage (
"Caelum: Creating " + name + " sphere mesh resource...");
// Use the mesh manager to create the mesh
Ogre::MeshPtr msh = Ogre::MeshManager::getSingleton ().createManual (name, RESOURCE_GROUP_NAME);
// Create a submesh
Ogre::SubMesh *sub = msh->createSubMesh ();
// Create the shared vertex data
Ogre::VertexData *vertexData = new Ogre::VertexData ();
msh->sharedVertexData = vertexData;
// Define the vertices' format
Ogre::VertexDeclaration *vertexDecl = vertexData->vertexDeclaration;
size_t currOffset = 0;
// Position
vertexDecl->addElement (0, currOffset, Ogre::VET_FLOAT3, Ogre::VES_POSITION);
currOffset += Ogre::VertexElement::getTypeSize (Ogre::VET_FLOAT3);
// Normal
vertexDecl->addElement (0, currOffset, Ogre::VET_FLOAT3, Ogre::VES_NORMAL);
currOffset += Ogre::VertexElement::getTypeSize (Ogre::VET_FLOAT3);
// Texture coordinates
vertexDecl->addElement (0, currOffset, Ogre::VET_FLOAT2, Ogre::VES_TEXTURE_COORDINATES, 0);
currOffset += Ogre::VertexElement::getTypeSize (Ogre::VET_FLOAT2);
// Allocate the vertex buffer
switch (type) {
case DT_GRADIENTS:
vertexData->vertexCount = segments * (segments - 1) + 2;
break;
case DT_STARFIELD:
vertexData->vertexCount = (segments + 1) * (segments + 1);
break;
};
Ogre::HardwareVertexBufferSharedPtr vBuf = Ogre::HardwareBufferManager::getSingleton ().createVertexBuffer (vertexDecl->getVertexSize (0), vertexData->vertexCount, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY, false);
Ogre::VertexBufferBinding *binding = vertexData->vertexBufferBinding;
binding->setBinding (0, vBuf);
float *pVertex = static_cast<float *>(vBuf->lock (Ogre::HardwareBuffer::HBL_DISCARD));
// Allocate the index buffer
switch (type) {
case DT_GRADIENTS:
sub->indexData->indexCount = 2 * segments * (segments - 1) * 3;
break;
case DT_STARFIELD:
sub->indexData->indexCount = 2 * (segments - 1) * segments * 3;
break;
};
sub->indexData->indexBuffer = Ogre::HardwareBufferManager::getSingleton ().createIndexBuffer (Ogre::HardwareIndexBuffer::IT_16BIT, sub->indexData->indexCount, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY, false);
Ogre::HardwareIndexBufferSharedPtr iBuf = sub->indexData->indexBuffer;
unsigned short *pIndices = static_cast<unsigned short *>(iBuf->lock (Ogre::HardwareBuffer::HBL_DISCARD));
// Fill the buffers
switch (type) {
case DT_GRADIENTS:
fillGradientsDomeBuffers (pVertex, pIndices, segments);
break;
case DT_STARFIELD:
fillStarfieldDomeBuffers (pVertex, pIndices, segments);
break;
};
// Close the vertex buffer
vBuf->unlock ();
// Close the index buffer
iBuf->unlock ();
// Finishing it...
sub->useSharedVertices = true;
msh->_setBounds (Ogre::AxisAlignedBox (-1, -1, -1, 1, 1, 1), false);
msh->_setBoundingSphereRadius (1);
msh->load ();
Ogre::LogManager::getSingleton ().logMessage (
"Caelum: generateSphericDome DONE");
}
GrassPatch::GrassPatch(int nb_blades, int nb_blade_segments, float width, float height, Ogre::SceneManager* ScnMgr)
{
int i, nb_particles;
// Create the particle field
nb_particles = nb_blades * (nb_blade_segments + 1);
m_Particles = new GrassParticleField(nb_particles, 1);
// Allocate the blade list
m_Blades = new Blade *[nb_blades];
m_NbBlades = nb_blades;
Ogre::Radian *angle = new Ogre::Radian(Ogre::Math::PI * ((rand()%1000) / 1000.0f));
// Create the blades of grass
for (i = 0; i < nb_blades; i++)
{
m_Blades[i] = new Blade(m_Particles,
i * (nb_blade_segments + 1),
nb_blade_segments,
4 + ((rand()%1000) / 1000.0f)*0.5f,
0.3f + ((rand()%1000) / 1000.0f)*0.1f,
width / 2 - ((rand()%1000) / 500.0f) * width,
height / 2 - ((rand()%1000) / 500.0f) * height,
*angle);
m_Blades[i]->moving = true;
m_Blades[i]->timeout = 0;
}
m_VertexCount = nb_blades * m_Blades[0]->GetStrippedVertexCount();
m_TriangleCount = ((nb_blade_segments - 1) << 1) + 1;
mvertexData = new Ogre::VertexData ();
// Vertex declaration
Ogre::VertexDeclaration* decl = mvertexData->vertexDeclaration;
Ogre::VertexBufferBinding* binding = mvertexData->vertexBufferBinding;
size_t offset = 0;
//position
decl->addElement (POSITION_BINDING, 0, Ogre::VET_FLOAT3, Ogre::VES_POSITION);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
// normal here
decl->addElement(POSITION_BINDING, offset, Ogre::VET_FLOAT3, Ogre::VES_NORMAL);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
// Diffuse Color
decl->addElement(POSITION_BINDING, offset, Ogre::VET_COLOUR, Ogre::VES_DIFFUSE);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_COLOUR);
// texture here
decl->addElement(POSITION_BINDING, offset, Ogre::VET_FLOAT2, Ogre::VES_TEXTURE_COORDINATES);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT2);
//position updated each frame
Ogre::HardwareVertexBufferSharedPtr vbuf1 =
Ogre::HardwareBufferManager::getSingleton().createVertexBuffer (offset, // size of one whole vertex
m_VertexCount, // number of vertices
Ogre::HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY, // usage
false); // no shadow buffer
binding->setBinding(POSITION_BINDING, vbuf1);
Ogre::HardwareVertexBufferSharedPtr vVertices = binding->getBuffer(POSITION_BINDING);
Ogre::Real *pVertices = static_cast<Ogre::Real*>( vVertices->lock( Ogre::HardwareBuffer::HBL_DISCARD ) );
// Colour up the blades
for (i = 0; i < m_NbBlades; i++)
m_Blades[i]->Paint (i, pVertices);
vVertices->unlock();
// Index buffer to handle triangle strip vertex buffer as triangle list
// Create index buffer
int nIndexes = m_TriangleCount*3*m_NbBlades;
Ogre::HardwareIndexBufferSharedPtr iBuf =
Ogre::HardwareBufferManager::getSingleton().createIndexBuffer (Ogre::HardwareIndexBuffer::IT_32BIT,
nIndexes,
Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY,
false);
// Fill index buffer
unsigned int* pIdx = static_cast<unsigned int*> (iBuf->lock (Ogre::HardwareBuffer::HBL_DISCARD));
unsigned int j = 0;
for (i = 0; i < m_NbBlades; i++)
m_Blades[i]->UpdateIndexBuffer(&j, i, pIdx);
iBuf->unlock ();
mRenderOp.vertexData = mvertexData;
// mRenderOp.vertexData->vertexCount = m_VertexCount;
mRenderOp.vertexData->vertexCount= nIndexes;
mRenderOp.vertexData->vertexStart = 0;
mRenderOp.operationType = Ogre::RenderOperation::OT_TRIANGLE_LIST;
mRenderOp.indexData = new Ogre::IndexData();
mRenderOp.indexData->indexBuffer = iBuf;
mRenderOp.indexData->indexCount = nIndexes;
mRenderOp.indexData->indexStart = 0;
mRenderOp.useIndexes = true;
mRenderOp.srcRenderable = this;
setMaterial ("Examples/Grass");
// setup radius the bounding box of this SimpleRenderable to big values to be sure to achieve drawing.
mRadius = 100;
setBoundingBox(Ogre::AxisAlignedBox(-300, -300, -300, 600, 600, 600));
}
Mesh loadMesh(const std::string& meshName)
{
Mesh result;
bool addedShared = false;
size_t currentOffset = 0;
size_t sharedOffset = 0;
size_t nextOffset = 0;
size_t indexOffset = 0;
const v3 scale = v3::UNIT_SCALE;
const v3 position = v3::ZERO;
const qv4 orientation = qv4::IDENTITY;
Ogre::MeshManager* mm = Ogre::MeshManager::getSingletonPtr();
if (! mm)
{
initOgreForMeshLoading();
mm = Ogre::MeshManager::getSingletonPtr();
}
Ogre::MeshPtr mesh = mm->load(meshName, "General");
// Calculate how many result.mVertices and result.mIndices we're going to need
for (unsigned short i=0; i < mesh->getNumSubMeshes(); ++i)
{
Ogre::SubMesh* subMesh = mesh->getSubMesh(i);
// We only need to add the shared result.mVertices once
if (subMesh->useSharedVertices)
{
if (!addedShared)
{
result.mVertexCount += mesh->sharedVertexData->vertexCount;
addedShared = true;
}
}
else
{
result.mVertexCount += subMesh->vertexData->vertexCount;
}
result.mIndexCount += subMesh->indexData->indexCount;
}
result.mVertices.reset(new v3[result.mVertexCount]);
result.mIndices.reset(new u32[result.mIndexCount]);
addedShared = false;
// Run through the sub-meshes again, adding the data into the arrays
for (unsigned short i=0; i < mesh->getNumSubMeshes(); ++i)
{
Ogre::SubMesh* subMesh = mesh->getSubMesh(i);
Ogre::VertexData* vertexData = subMesh->useSharedVertices ? mesh->sharedVertexData : subMesh->vertexData;
if((!subMesh->useSharedVertices) || (subMesh->useSharedVertices && !addedShared))
{
if(subMesh->useSharedVertices)
{
addedShared = true;
sharedOffset = currentOffset;
}
const Ogre::VertexElement* posElem =
vertexData->vertexDeclaration->findElementBySemantic(Ogre::VES_POSITION);
Ogre::HardwareVertexBufferSharedPtr vbuf =
vertexData->vertexBufferBinding->getBuffer(posElem->getSource());
unsigned char* vertex = static_cast<unsigned char*>(vbuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
// There is _no_ baseVertexPointerToElement() which takes an Ogre::Real or a double
// as second argument. So make it float, to avoid trouble when Ogre::Real will
// be compiled/typedefed as double:
float* pReal;
for( size_t j = 0; j < vertexData->vertexCount; ++j, vertex += vbuf->getVertexSize())
{
posElem->baseVertexPointerToElement(vertex, &pReal);
v3 pt(pReal[0], pReal[1], pReal[2]);
result.mVertices[currentOffset + j] = (orientation * (pt * scale)) + position;
}
vbuf->unlock();
nextOffset += vertexData->vertexCount;
}
Ogre::IndexData* index_data = subMesh->indexData;
size_t numTris = index_data->indexCount / 3;
Ogre::HardwareIndexBufferSharedPtr ibuf = index_data->indexBuffer;
bool use32bitindexes = (ibuf->getType() == Ogre::HardwareIndexBuffer::IT_32BIT);
unsigned long* pLong = static_cast<unsigned long*>(ibuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
unsigned short* pShort = reinterpret_cast<unsigned short*>(pLong);
size_t offset = (subMesh->useSharedVertices)? sharedOffset : currentOffset;
if (use32bitindexes)
{
for (size_t k = 0; k < numTris*3; ++k)
{
result.mIndices[indexOffset++] = pLong[k] + static_cast<unsigned long>(offset);
}
}
else
{
for (size_t k = 0; k < numTris*3; ++k)
{
result.mIndices[indexOffset++] = static_cast<unsigned long>(pShort[k]) + static_cast<unsigned long>(offset);
}
}
ibuf->unlock();
currentOffset = nextOffset;
}
return result;
}
void GetTrianglesFromMesh(Ogre::Mesh* mesh, std::vector<float3>& dest)
{
dest.clear();
try
{
for(uint i = 0; i < mesh->getNumSubMeshes(); ++i)
{
Ogre::SubMesh* submesh = mesh->getSubMesh(i);
Ogre::VertexData* vertex_data = submesh->useSharedVertices ? mesh->sharedVertexData : submesh->vertexData;
const Ogre::VertexElement* posElem = vertex_data->vertexDeclaration->findElementBySemantic(Ogre::VES_POSITION);
Ogre::HardwareVertexBufferSharedPtr vbuf = vertex_data->vertexBufferBinding->getBuffer(posElem->getSource());
unsigned char* vertices = static_cast<unsigned char*>(vbuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
size_t vertexSize = vbuf->getVertexSize();
float* pReal = 0;
Ogre::IndexData* index_data = submesh->indexData;
size_t numTris = index_data->indexCount / 3;
Ogre::HardwareIndexBufferSharedPtr ibuf = index_data->indexBuffer;
u32* pLong = static_cast<u32*>(ibuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
u16* pShort = reinterpret_cast<u16*>(pLong);
bool use32bitindexes = (ibuf->getType() == Ogre::HardwareIndexBuffer::IT_32BIT);
if (use32bitindexes)
{
for(size_t k = 0; k < numTris * 3; k += 3)
{
uint i1 = pLong[k];
uint i2 = pLong[k+1];
uint i3 = pLong[k+2];
posElem->baseVertexPointerToElement(vertices + i1 * vertexSize, &pReal);
dest.push_back(float3(pReal[0], pReal[1], pReal[2]));
posElem->baseVertexPointerToElement(vertices + i2 * vertexSize, &pReal);
dest.push_back(float3(pReal[0], pReal[1], pReal[2]));
posElem->baseVertexPointerToElement(vertices + i3 * vertexSize, &pReal);
dest.push_back(float3(pReal[0], pReal[1], pReal[2]));
}
}
else
{
for(size_t k = 0; k < numTris * 3; k += 3)
{
uint i1 = pShort[k];
uint i2 = pShort[k+1];
uint i3 = pShort[k+2];
posElem->baseVertexPointerToElement(vertices + i1 * vertexSize, &pReal);
dest.push_back(float3(pReal[0], pReal[1], pReal[2]));
posElem->baseVertexPointerToElement(vertices + i2 * vertexSize, &pReal);
dest.push_back(float3(pReal[0], pReal[1], pReal[2]));
posElem->baseVertexPointerToElement(vertices + i3 * vertexSize, &pReal);
dest.push_back(float3(pReal[0], pReal[1], pReal[2]));
}
}
vbuf->unlock();
ibuf->unlock();
}
} catch(Ogre::Exception &e)
{
///\todo Fix Ogre to not allow meshes like this to be successfully created.
LogError("GetTrianglesFromMesh failed for mesh! Ogre threw an exception: " + QString(e.what()));
dest.clear();
}
}
void MilkshapePlugin::doExportMesh(msModel* pModel)
{
// Create singletons
Ogre::SkeletonManager skelMgr;
Ogre::DefaultHardwareBufferManager defHWBufMgr;
Ogre::LogManager& logMgr = Ogre::LogManager::getSingleton();
Ogre::MeshManager meshMgr;
//
// choose filename
//
OPENFILENAME ofn;
memset (&ofn, 0, sizeof (OPENFILENAME));
char szFile[MS_MAX_PATH];
char szFileTitle[MS_MAX_PATH];
char szDefExt[32] = "mesh";
char szFilter[128] = "OGRE .mesh Files (*.mesh)\0*.mesh\0All Files (*.*)\0*.*\0\0";
szFile[0] = '\0';
szFileTitle[0] = '\0';
ofn.lStructSize = sizeof (OPENFILENAME);
ofn.lpstrDefExt = szDefExt;
ofn.lpstrFilter = szFilter;
ofn.lpstrFile = szFile;
ofn.nMaxFile = MS_MAX_PATH;
ofn.lpstrFileTitle = szFileTitle;
ofn.nMaxFileTitle = MS_MAX_PATH;
ofn.Flags = OFN_HIDEREADONLY | OFN_OVERWRITEPROMPT | OFN_PATHMUSTEXIST;
ofn.lpstrTitle = "Export to OGRE Mesh";
if (!::GetSaveFileName (&ofn))
return /*0*/;
logMgr.logMessage("Creating Mesh object...");
Ogre::MeshPtr ogreMesh = Ogre::MeshManager::getSingleton().create("export",
Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
logMgr.logMessage("Mesh object created.");
bool foundBoneAssignment = false;
// No shared geometry
int i;
int wh, numbones;
int intweight[3], intbones[3];
size_t j;
Ogre::Vector3 min, max, currpos;
Ogre::Real maxSquaredRadius;
bool first = true;
for (i = 0; i < msModel_GetMeshCount (pModel); i++)
{
msMesh *pMesh = msModel_GetMeshAt (pModel, i);
logMgr.logMessage("Creating SubMesh object...");
Ogre::SubMesh* ogreSubMesh = ogreMesh->createSubMesh();
logMgr.logMessage("SubMesh object created.");
// Set material
logMgr.logMessage("Getting SubMesh Material...");
int matIdx = msMesh_GetMaterialIndex(pMesh);
if (matIdx == -1)
{
// No material, use blank
ogreSubMesh->setMaterialName("BaseWhite");
logMgr.logMessage("No Material, using default 'BaseWhite'.");
}
else
{
msMaterial *pMat = msModel_GetMaterialAt(pModel, matIdx);
ogreSubMesh->setMaterialName(pMat->szName);
logMgr.logMessage("SubMesh Material Done.");
}
logMgr.logMessage("Setting up geometry...");
// Set up mesh geometry
ogreSubMesh->vertexData = new Ogre::VertexData();
ogreSubMesh->vertexData->vertexCount = msMesh_GetVertexCount (pMesh);
ogreSubMesh->vertexData->vertexStart = 0;
Ogre::VertexBufferBinding* bind = ogreSubMesh->vertexData->vertexBufferBinding;
Ogre::VertexDeclaration* decl = ogreSubMesh->vertexData->vertexDeclaration;
// Always 1 texture layer, 2D coords
#define POSITION_BINDING 0
#define NORMAL_BINDING 1
#define TEXCOORD_BINDING 2
decl->addElement(POSITION_BINDING, 0, Ogre::VET_FLOAT3, Ogre::VES_POSITION);
decl->addElement(NORMAL_BINDING, 0, Ogre::VET_FLOAT3, Ogre::VES_NORMAL);
decl->addElement(TEXCOORD_BINDING, 0, Ogre::VET_FLOAT2, Ogre::VES_TEXTURE_COORDINATES);
// Create buffers
Ogre::HardwareVertexBufferSharedPtr pbuf = Ogre::HardwareBufferManager::getSingleton().
createVertexBuffer(decl->getVertexSize(POSITION_BINDING), ogreSubMesh->vertexData->vertexCount,
Ogre::HardwareBuffer::HBU_DYNAMIC, false);
Ogre::HardwareVertexBufferSharedPtr nbuf = Ogre::HardwareBufferManager::getSingleton().
createVertexBuffer(decl->getVertexSize(NORMAL_BINDING), ogreSubMesh->vertexData->vertexCount,
Ogre::HardwareBuffer::HBU_DYNAMIC, false);
Ogre::HardwareVertexBufferSharedPtr tbuf = Ogre::HardwareBufferManager::getSingleton().
createVertexBuffer(decl->getVertexSize(TEXCOORD_BINDING), ogreSubMesh->vertexData->vertexCount,
Ogre::HardwareBuffer::HBU_DYNAMIC, false);
bind->setBinding(POSITION_BINDING, pbuf);
bind->setBinding(NORMAL_BINDING, nbuf);
bind->setBinding(TEXCOORD_BINDING, tbuf);
ogreSubMesh->useSharedVertices = false;
float* pPos = static_cast<float*>(
pbuf->lock(Ogre::HardwareBuffer::HBL_DISCARD));
logMgr.logMessage("Doing positions and texture coords...");
for (j = 0; j < ogreSubMesh->vertexData->vertexCount; ++j)
{
logMgr.logMessage("Doing vertex " + Ogre::StringConverter::toString(j));
msVertex *pVertex = msMesh_GetVertexAt (pMesh, (int)j);
msVertexEx *pVertexEx=msMesh_GetVertexExAt(pMesh, (int)j);
msVec3 Vertex;
msVertex_GetVertex (pVertex, Vertex);
*pPos++ = Vertex[0];
*pPos++ = Vertex[1];
*pPos++ = Vertex[2];
// Deal with bounds
currpos = Ogre::Vector3(Vertex[0], Vertex[1], Vertex[2]);
if (first)
{
min = max = currpos;
maxSquaredRadius = currpos.squaredLength();
first = false;
}
else
{
min.makeFloor(currpos);
max.makeCeil(currpos);
maxSquaredRadius = std::max(maxSquaredRadius, currpos.squaredLength());
}
int boneIdx = msVertex_GetBoneIndex(pVertex);
if (boneIdx != -1)
{
foundBoneAssignment = true;
numbones = 1;
intbones[0] = intbones[1] = intbones[2] = -1;
intweight[0] = intweight[1] = intweight[2] = 0;
for(wh = 0; wh < 3; ++wh)
{
intbones[wh] = msVertexEx_GetBoneIndices(pVertexEx, wh);
if(intbones[wh] == -1)
break;
++numbones;
intweight[wh] = msVertexEx_GetBoneWeights(pVertexEx, wh);
} // for(k)
Ogre::VertexBoneAssignment vertAssign;
vertAssign.boneIndex = boneIdx;
vertAssign.vertexIndex = (unsigned int)j;
if(numbones == 1)
{
vertAssign.weight = 1.0;
} // single assignment
else
{
vertAssign.weight=(Ogre::Real)intweight[0]/100.0;
}
ogreSubMesh->addBoneAssignment(vertAssign);
if(numbones > 1)
{
// this somewhat contorted logic is because the first weight [0] matches to the bone assignment
// located with pVertex. The next two weights [1][2] match up to the first two bones found
// with pVertexEx [0][1]. The weight for the fourth bone, if present, is the unassigned weight
for(wh = 0; wh < 3; wh++)
{
boneIdx = intbones[wh];
if(boneIdx == -1)
break;
vertAssign.boneIndex = boneIdx;
vertAssign.vertexIndex = (unsigned int)j;
if(wh == 2)
{
// fourth weight is 1.0-(sumoffirstthreeweights)
vertAssign.weight = 1.0-(((Ogre::Real)intweight[0]/100.0)+
((Ogre::Real)intweight[1]/100.0)+((Ogre::Real)intweight[2]/100.0));
}
else
{
vertAssign.weight=(Ogre::Real)intweight[wh+1];
}
ogreSubMesh->addBoneAssignment(vertAssign);
} // for(k)
} // if(numbones)
}
}
pbuf->unlock();
float* pTex = static_cast<float*>(
tbuf->lock(Ogre::HardwareBuffer::HBL_DISCARD));
logMgr.logMessage("Doing uvs, normals and indexes (v2)...");
// Aargh, Milkshape uses stupid separate normal indexes for the same vertex like 3DS
// Normals aren't described per vertex but per triangle vertex index
// Pain in the arse, we have to do vertex duplication again if normals differ at a vertex (non smooth)
// WHY don't people realise this format is a pain for passing to 3D APIs in vertex buffers?
float* pNorm = static_cast<float*>(
nbuf->lock(Ogre::HardwareBuffer::HBL_DISCARD));
ogreSubMesh->indexData->indexCount = msMesh_GetTriangleCount (pMesh) * 3;
// Always use 16-bit buffers, Milkshape can't handle more anyway
Ogre::HardwareIndexBufferSharedPtr ibuf = Ogre::HardwareBufferManager::getSingleton().
createIndexBuffer(Ogre::HardwareIndexBuffer::IT_16BIT,
ogreSubMesh->indexData->indexCount, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
ogreSubMesh->indexData->indexBuffer = ibuf;
unsigned short *pIdx = static_cast<unsigned short*>(
ibuf->lock(Ogre::HardwareBuffer::HBL_DISCARD));
for (j = 0; j < ogreSubMesh->indexData->indexCount; j+=3)
{
msTriangle *pTriangle = msMesh_GetTriangleAt (pMesh, (int)j/3);
msTriangleEx *pTriangleEx=msMesh_GetTriangleExAt(pMesh, (int)j/3);
word nIndices[3];
msTriangle_GetVertexIndices (pTriangle, nIndices);
msVec3 Normal;
msVec2 uv;
int k, vertIdx;
for (k = 0; k < 3; ++k)
{
vertIdx = nIndices[k];
// Face index
pIdx[j+k] = vertIdx;
// Vertex normals
// For the moment, ignore any discrepancies per vertex
msTriangleEx_GetNormal(pTriangleEx, k, &Normal[0]);
msTriangleEx_GetTexCoord(pTriangleEx, k, &uv[0]);
pTex[(vertIdx*2)]=uv[0];
pTex[(vertIdx*2)+1]=uv[1];
pNorm[(vertIdx*3)] = Normal[0];
pNorm[(vertIdx*3)+1] = Normal[1];
pNorm[(vertIdx*3)+2] = Normal[2];
}
} // Faces
nbuf->unlock();
ibuf->unlock();
tbuf->unlock();
// Now use Ogre's ability to reorganise the vertex buffers the best way
Ogre::VertexDeclaration* newDecl =
ogreSubMesh->vertexData->vertexDeclaration->getAutoOrganisedDeclaration(
foundBoneAssignment, false);
Ogre::BufferUsageList bufferUsages;
for (size_t u = 0; u <= newDecl->getMaxSource(); ++u)
bufferUsages.push_back(Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
ogreSubMesh->vertexData->reorganiseBuffers(newDecl, bufferUsages);
logMgr.logMessage("Geometry done.");
} // SubMesh
// Set bounds
ogreMesh->_setBoundingSphereRadius(Ogre::Math::Sqrt(maxSquaredRadius));
ogreMesh->_setBounds(Ogre::AxisAlignedBox(min, max), false);
// Keep hold of a Skeleton pointer for deletion later
// Mesh uses Skeleton pointer for skeleton name
Ogre::SkeletonPtr pSkel;
if (exportSkeleton && foundBoneAssignment)
{
// export skeleton, also update mesh to point to it
pSkel = doExportSkeleton(pModel, ogreMesh);
}
else if (!exportSkeleton && foundBoneAssignment)
{
// We've found bone assignments, but skeleton is not to be exported
// Prompt the user to find the skeleton
if (!locateSkeleton(ogreMesh))
return;
}
// Export
logMgr.logMessage("Creating MeshSerializer..");
Ogre::MeshSerializer serializer;
logMgr.logMessage("MeshSerializer created.");
// Generate LODs if required
if (generateLods)
{
// Build LOD depth list
Ogre::Mesh::LodDistanceList distList;
float depth = 0;
for (unsigned short depthidx = 0; depthidx < numLods; ++depthidx)
{
depth += lodDepthIncrement;
distList.push_back(depth);
}
ogreMesh->generateLodLevels(distList, lodReductionMethod, lodReductionAmount);
}
if (generateEdgeLists)
{
ogreMesh->buildEdgeList();
}
if (generateTangents)
{
unsigned short src, dest;
ogreMesh->suggestTangentVectorBuildParams(tangentSemantic, src, dest);
ogreMesh->buildTangentVectors(tangentSemantic, src, dest, tangentsSplitMirrored, tangentsSplitRotated, tangentsUseParity);
}
// Export
Ogre::String msg;
msg = "Exporting mesh data to file '" + Ogre::String(szFile) + "'";
logMgr.logMessage(msg);
serializer.exportMesh(ogreMesh.getPointer(), szFile);
logMgr.logMessage("Export successful");
Ogre::MeshManager::getSingleton().remove(ogreMesh->getHandle());
if (!pSkel.isNull())
Ogre::SkeletonManager::getSingleton().remove(pSkel->getHandle());
if (exportMaterials && msModel_GetMaterialCount(pModel) > 0)
{
doExportMaterials(pModel);
}
}
mesh::mesh(const std::string &mn, const mat4 &tf, const world &_world):
/** Don't know if world() is the best thing to pass but it works for now **/
_mesh(NewtonMeshCreate(_world))
{
Ogre::MeshPtr meshPtr;
try
{
meshPtr = Ogre::MeshPtr(Ogre::MeshManager::getSingleton().load(mn,
Ogre::ResourceGroupManager::AUTODETECT_RESOURCE_GROUP_NAME));
}
catch(...)
{
return;
}
const Ogre::Mesh &mesh = *meshPtr;
NewtonMeshBeginFace(_mesh);
for (unsigned smi = 0; smi < mesh.getNumSubMeshes(); smi++) {
Ogre::SubMesh *subMesh = mesh.getSubMesh(smi);
Ogre::VertexData *vertexData =
(subMesh->useSharedVertices) ?
vertexData = mesh.sharedVertexData : vertexData = subMesh->vertexData;
Ogre::VertexDeclaration *vertexDecl = vertexData->vertexDeclaration;
const Ogre::VertexElement *element = vertexDecl->findElementBySemantic(Ogre::VES_POSITION);
Ogre::HardwareVertexBufferSharedPtr vertexHVBSP =
vertexData->vertexBufferBinding->getBuffer(element->getSource());
unsigned char *vPtr = (unsigned char*)(vertexHVBSP->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
Ogre::IndexData *indexData = subMesh->indexData;
size_t numIndices = indexData->indexCount;
size_t numTris = numIndices / 3;
// get pointer!
Ogre::HardwareIndexBufferSharedPtr indexHIBSP = indexData->indexBuffer;
// 16 or 32 bit indices?
bool indicesAre32Bit = (indexHIBSP->getType() == Ogre::HardwareIndexBuffer::IT_32BIT);
unsigned long *longPtr = NULL;
unsigned short *shortPtr = NULL;
if (indicesAre32Bit)
longPtr = static_cast<unsigned long*>(
indexHIBSP->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
else
shortPtr = static_cast<unsigned short*>(
indexHIBSP->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
//now loop through the indices, getting polygon info!
int iOffset = 0;
for (size_t i = 0; i < numTris; i++) {
vec3 triVertices[3];
unsigned char *vOffset = NULL;
float *vertexPosPtr = NULL;
int idx = 0;
for (int j = 0; j < 3; j++) {
if (indicesAre32Bit)
idx = longPtr[iOffset + j];
else
idx = shortPtr[iOffset + j];
vOffset = vPtr + (idx * vertexHVBSP->getVertexSize());
element->baseVertexPointerToElement(vOffset, &vertexPosPtr);
triVertices[j].x = *vertexPosPtr; vertexPosPtr++;
triVertices[j].y = *vertexPosPtr; vertexPosPtr++;
triVertices[j].z = *vertexPosPtr; vertexPosPtr++;
triVertices[j] = tf * triVertices[j];
}
// _mesh, 3 vertices (triangle), (float = 4 bytes) * 3
// index = index of sub mesh (easy to recognize)
NewtonMeshAddFace(_mesh, 3, &triVertices[0].x, sizeof(float) * 3, smi);
iOffset += 3;
}
//unlock the buffers!
vertexHVBSP->unlock();
indexHIBSP->unlock();
}
NewtonMeshEndFace(_mesh);
}
void PhysicsManager::getMeshInformation(Ogre::MeshPtr mesh,size_t &vertex_count,Vector3* &vertices, size_t &index_count, unsigned* &indices, const Ogre::Vector3 &position, const Ogre::Quaternion &orient,const Ogre::Vector3 &scale)
{
vertex_count = index_count = 0;
bool added_shared = false;
size_t current_offset = vertex_count;
size_t shared_offset = vertex_count;
size_t next_offset = vertex_count;
size_t index_offset = index_count;
size_t prev_vert = vertex_count;
size_t prev_ind = index_count;
// Calculate how many vertices and indices we're going to need
for(int i = 0;i < mesh->getNumSubMeshes();i++)
{
SubMesh* submesh = mesh->getSubMesh(i);
// We only need to add the shared vertices once
if(submesh->useSharedVertices)
{
if(!added_shared)
{
VertexData* vertex_data = mesh->sharedVertexData;
vertex_count += vertex_data->vertexCount;
added_shared = true;
}
}
else
{
VertexData* vertex_data = submesh->vertexData;
vertex_count += vertex_data->vertexCount;
}
// Add the indices
Ogre::IndexData* index_data = submesh->indexData;
index_count += index_data->indexCount;
}
// Allocate space for the vertices and indices
vertices = new Vector3[vertex_count];
indices = new unsigned[index_count];
added_shared = false;
// Run through the submeshes again, adding the data into the arrays
for(int i = 0;i < mesh->getNumSubMeshes();i++)
{
SubMesh* submesh = mesh->getSubMesh(i);
Ogre::VertexData* vertex_data = submesh->useSharedVertices ? mesh->sharedVertexData : submesh->vertexData;
if((!submesh->useSharedVertices)||(submesh->useSharedVertices && !added_shared))
{
if(submesh->useSharedVertices)
{
added_shared = true;
shared_offset = current_offset;
}
const Ogre::VertexElement* posElem = vertex_data->vertexDeclaration->findElementBySemantic(Ogre::VES_POSITION);
Ogre::HardwareVertexBufferSharedPtr vbuf = vertex_data->vertexBufferBinding->getBuffer(posElem->getSource());
unsigned char* vertex = static_cast<unsigned char*>(vbuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
Ogre::Real* pReal;
for(size_t j = 0; j < vertex_data->vertexCount; ++j, vertex += vbuf->getVertexSize())
{
posElem->baseVertexPointerToElement(vertex, &pReal);
Vector3 pt;
pt.x = (*pReal++);
pt.y = (*pReal++);
pt.z = (*pReal++);
pt = (orient * (pt * scale)) + position;
vertices[current_offset + j].x = pt.x;
vertices[current_offset + j].y = pt.y;
vertices[current_offset + j].z = pt.z;
}
vbuf->unlock();
next_offset += vertex_data->vertexCount;
}
Ogre::IndexData* index_data = submesh->indexData;
size_t numTris = index_data->indexCount / 3;
unsigned short* pShort;
unsigned int* pInt;
Ogre::HardwareIndexBufferSharedPtr ibuf = index_data->indexBuffer;
bool use32bitindexes = (ibuf->getType() == Ogre::HardwareIndexBuffer::IT_32BIT);
if (use32bitindexes) pInt = static_cast<unsigned int*>(ibuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
else pShort = static_cast<unsigned short*>(ibuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
for(size_t k = 0; k < numTris; ++k)
{
size_t offset = (submesh->useSharedVertices)?shared_offset:current_offset;
unsigned int vindex = use32bitindexes? *pInt++ : *pShort++;
indices[index_offset + 0] = vindex + offset;
vindex = use32bitindexes? *pInt++ : *pShort++;
indices[index_offset + 1] = vindex + offset;
vindex = use32bitindexes? *pInt++ : *pShort++;
indices[index_offset + 2] = vindex + offset;
index_offset += 3;
}
ibuf->unlock();
current_offset = next_offset;
}
}
void ChunkBase::generateMesh()
{
if (!mIsModified) return;
generateVertices();
if (isEmpty) {
return;
}
uint32_t numVertices, numIndices;
if (mNumVertices > DefaultFaces * 4) {
// more vertices than the default buffer can hold -> allocate new one;
if (mVertexBufferCreated) {
removeMesh();
}
numVertices = mNumVertices;
numIndices = mNumIndices;
} else {
numVertices = DefaultFaces * 4;
numIndices = DefaultFaces * 6;
}
if (!mVertexBufferCreated) {
mMeshPtr = Ogre::MeshManager::getSingleton().createManual(mChunkName, "Game");
Ogre::SubMesh* sub = mMeshPtr->createSubMesh();
/// Create vertex data structure for 8 vertices shared between submeshes
mMeshPtr->sharedVertexData = new Ogre::VertexData();
mMeshPtr->sharedVertexData->vertexCount = mNumVertices;
/// Create declaration (memory format) of vertex data
Ogre::VertexDeclaration* decl = mMeshPtr->sharedVertexData->vertexDeclaration;
size_t offset = 0;
// 1st buffer
decl->addElement(0, offset, Ogre::VET_FLOAT3, Ogre::VES_POSITION);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
decl->addElement(0, offset, Ogre::VET_FLOAT3, Ogre::VES_NORMAL);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
decl->addElement(0, offset, Ogre::VET_FLOAT2, Ogre::VES_TEXTURE_COORDINATES);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT2);
/// Allocate vertex buffer of the requested number of vertices (vertexCount) and bytes per vertex (offset)
Ogre::HardwareVertexBufferSharedPtr vbuf = Ogre::HardwareBufferManager::getSingleton().
createVertexBuffer(offset, numVertices, Ogre::HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE);
/// Upload the vertex data to the card
vbuf->writeData(0, (decl->getVertexSize(0) * mNumVertices), mVertices, true);
/// Set vertex buffer binding so buffer 0 is bound to our vertex buffer
Ogre::VertexBufferBinding* bind = mMeshPtr->sharedVertexData->vertexBufferBinding;
bind->setBinding(0, vbuf);
/// Allocate index buffer of the requested number of vertices (ibufCount)
Ogre::HardwareIndexBufferSharedPtr ibuf = Ogre::HardwareBufferManager::getSingleton().
createIndexBuffer(Ogre::HardwareIndexBuffer::IT_16BIT, numIndices, Ogre::HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY_DISCARDABLE);
/// Upload the index data to the card
ibuf->writeData(0, (ibuf->getIndexSize() * mNumIndices), mIndices, true);
/// Set parameters of the submesh
sub->indexData->indexBuffer = ibuf;
sub->indexData->indexCount = mNumIndices;
/// Set bounding information (for culling)
mMeshPtr->_setBounds(Ogre::AxisAlignedBox(0, 0, 0, Ogre::Real(ChunkSizeX), Ogre::Real(mHighestCube), Ogre::Real(ChunkSizeZ)));
mMeshPtr->_setBoundingSphereRadius((Ogre::Real) std::sqrt((float) (2 * 16 * 16 + 128 * 128)));
/// Notify -Mesh object that it has been loaded
mMeshPtr->load();
mVertexBufferCreated = true;
} else {
Ogre::VertexDeclaration* decl = mMeshPtr->sharedVertexData->vertexDeclaration;
mMeshPtr->sharedVertexData->vertexCount = mNumVertices;
Ogre::SubMesh* sub = mMeshPtr->getSubMesh(0);
sub->indexData->indexCount = mNumIndices;
/// Upload the new vertex data to the card
Ogre::HardwareVertexBufferSharedPtr vbuf = mMeshPtr->sharedVertexData->vertexBufferBinding->getBuffer(0);
vbuf->writeData(0, (decl->getVertexSize(0) * mNumVertices), mVertices, true);
/// Upload the index data to the card
Ogre::HardwareIndexBufferSharedPtr ibuf = sub->indexData->indexBuffer;
ibuf->writeData(0, (ibuf->getIndexSize() * mNumIndices), mIndices, true);
mMeshPtr->_setBounds(Ogre::AxisAlignedBox(0, 0, 0, Ogre::Real(ChunkSizeX), Ogre::Real(mHighestCube), Ogre::Real(ChunkSizeZ)));
mMeshPtr->load();
}
}
void OgreMeshAsset::CreateKdTree()
{
meshData.Clear();
normals.clear();
uvs.clear();
subMeshTriangleCounts.clear();
for(unsigned short i = 0; i < ogreMesh->getNumSubMeshes(); ++i)
{
Ogre::SubMesh *submesh = ogreMesh->getSubMesh(i);
assert(submesh);
Ogre::VertexData *vertexData = submesh->useSharedVertices ? ogreMesh->sharedVertexData : submesh->vertexData;
assert(vertexData);
const Ogre::VertexElement *posElem = vertexData->vertexDeclaration->findElementBySemantic(Ogre::VES_POSITION);
if (!posElem)
{
subMeshTriangleCounts.push_back(0);
continue; // No position element. Ignore this submesh.
}
Ogre::HardwareVertexBufferSharedPtr vbufPos = vertexData->vertexBufferBinding->getBuffer(posElem->getSource());
unsigned char *pos = (unsigned char*)vbufPos->lock(Ogre::HardwareBuffer::HBL_READ_ONLY);
assert(pos);
size_t posOffset = posElem->getOffset();
size_t posSize = vbufPos->getVertexSize();
// Texcoord element is not mandatory
unsigned char *texCoord = 0;
size_t texOffset = 0;
size_t texSize = 0;
Ogre::HardwareVertexBufferSharedPtr vbufTex;
const Ogre::VertexElement *texElem = vertexData->vertexDeclaration->findElementBySemantic(Ogre::VES_TEXTURE_COORDINATES);
if (texElem)
{
vbufTex = vertexData->vertexBufferBinding->getBuffer(texElem->getSource());
// Check if the texcoord buffer is different than the position buffer, in that case lock it separately
if (vbufTex != vbufPos)
texCoord = static_cast<unsigned char*>(vbufTex->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
else
texCoord = pos;
texOffset = texElem->getOffset();
texSize = vbufTex->getVertexSize();
}
Ogre::IndexData *indexData = submesh->indexData;
Ogre::HardwareIndexBufferSharedPtr ibuf = indexData->indexBuffer;
u32 *pLong = (u32*)ibuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY);
u16 *pShort = (u16*)pLong;
const bool use32BitIndices = (ibuf->getType() == Ogre::HardwareIndexBuffer::IT_32BIT);
for(unsigned j = 0; j+2 < indexData->indexCount; j += 3)
{
unsigned i0, i1, i2;
if (use32BitIndices)
{
i0 = pLong[j];
i1 = pLong[j+1];
i2 = pLong[j+2];
}
else
{
i0 = pShort[j];
i1 = pShort[j+1];
i2 = pShort[j+2];
}
float3 v0 = *(float3*)(pos + posOffset + i0 * posSize);
float3 v1 = *(float3*)(pos + posOffset + i1 * posSize);
float3 v2 = *(float3*)(pos + posOffset + i2 * posSize);
Triangle t(v0, v1, v2);
meshData.AddObjects(&t, 1);
if (texElem)
{
uvs.push_back(*((float2*)(texCoord + texOffset + i0 * texSize)));
uvs.push_back(*((float2*)(texCoord + texOffset + i1 * texSize)));
uvs.push_back(*((float2*)(texCoord + texOffset + i2 * texSize)));
}
float3 edge1 = v1 - v0;
float3 edge2 = v2 - v0;
float3 normal = edge1.Cross(edge2);
normal.Normalize();
normals.push_back(normal);
}
subMeshTriangleCounts.push_back((int)(indexData->indexCount / 3));
vbufPos->unlock();
if (!vbufTex.isNull() && vbufTex != vbufPos)
vbufTex->unlock();
ibuf->unlock();
}
{
PROFILE(OgreMeshAsset_KdTree_Build);
meshData.Build();
}
}
void TutorialApplication::createSphere(const std::string& strName, const float r, const int nRings, const int nSegments) {
Ogre::MeshPtr pSphere = Ogre::MeshManager::getSingleton().createManual(Ogre::String(strName), Ogre::ResourceGroupManager::DEFAULT_RESOURCE_GROUP_NAME);
Ogre::SubMesh *pSphereVertex = pSphere->createSubMesh();
pSphere->sharedVertexData = new Ogre::VertexData();
Ogre::VertexData* vertexData = pSphere->sharedVertexData;
// define the vertex format
Ogre::VertexDeclaration* vertexDecl = vertexData->vertexDeclaration;
size_t currOffset = 0;
// positions
vertexDecl->addElement(0, currOffset, Ogre::VET_FLOAT3, Ogre::VES_POSITION);
currOffset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
// normals
vertexDecl->addElement(0, currOffset, Ogre::VET_FLOAT3, Ogre::VES_NORMAL);
currOffset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
// two dimensional texture coordinates
vertexDecl->addElement(0, currOffset, Ogre::VET_FLOAT2, Ogre::VES_TEXTURE_COORDINATES, 0);
currOffset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT2);
// allocate the vertex buffer
vertexData->vertexCount = (nRings + 1) * (nSegments+1);
Ogre::HardwareVertexBufferSharedPtr vBuf = Ogre::HardwareBufferManager::getSingleton().createVertexBuffer(vertexDecl->getVertexSize(0), vertexData->vertexCount, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY, false);
Ogre::VertexBufferBinding* binding = vertexData->vertexBufferBinding;
binding->setBinding(0, vBuf);
float* pVertex = static_cast<float*>(vBuf->lock(Ogre::HardwareBuffer::HBL_DISCARD));
// allocate index buffer
pSphereVertex->indexData->indexCount = 6 * nRings * (nSegments + 1);
pSphereVertex->indexData->indexBuffer = Ogre::HardwareBufferManager::getSingleton().createIndexBuffer(Ogre::HardwareIndexBuffer::IT_16BIT, pSphereVertex->indexData->indexCount, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY, false);
Ogre::HardwareIndexBufferSharedPtr iBuf = pSphereVertex->indexData->indexBuffer;
unsigned short* pIndices = static_cast<unsigned short*>(iBuf->lock(Ogre::HardwareBuffer::HBL_DISCARD));
float fDeltaRingAngle = (Ogre::Math::PI / nRings);
float fDeltaSegAngle = (2 * Ogre::Math::PI / nSegments);
unsigned short wVerticeIndex = 0 ;
// Generate the group of rings for the sphere
for( int ring = 0; ring <= nRings; ring++ ) {
float r0 = r * sinf (ring * fDeltaRingAngle);
float y0 = r * cosf (ring * fDeltaRingAngle);
// Generate the group of segments for the current ring
for(int seg = 0; seg <= nSegments; seg++) {
float x0 = r0 * sinf(seg * fDeltaSegAngle);
float z0 = r0 * cosf(seg * fDeltaSegAngle);
// Add one vertex to the strip which makes up the sphere
*pVertex++ = x0;
*pVertex++ = y0;
*pVertex++ = z0;
Ogre::Vector3 vNormal = Ogre::Vector3(x0, y0, z0).normalisedCopy();
*pVertex++ = vNormal.x;
*pVertex++ = vNormal.y;
*pVertex++ = vNormal.z;
*pVertex++ = (float) seg / (float) nSegments;
*pVertex++ = (float) ring / (float) nRings;
if (ring != nRings) {
// each vertex (except the last) has six indices pointing to it
*pIndices++ = wVerticeIndex + nSegments + 1;
*pIndices++ = wVerticeIndex;
*pIndices++ = wVerticeIndex + nSegments;
*pIndices++ = wVerticeIndex + nSegments + 1;
*pIndices++ = wVerticeIndex + 1;
*pIndices++ = wVerticeIndex;
wVerticeIndex ++;
}
}; // end for seg
} // end for ring
// Unlock
vBuf->unlock();
iBuf->unlock();
// Generate face list
pSphereVertex->useSharedVertices = true;
// the original code was missing this line:
pSphere->_setBounds( Ogre::AxisAlignedBox( Ogre::Vector3(-r, -r, -r), Ogre::Vector3(r, r, r) ), false );
pSphere->_setBoundingSphereRadius(r);
// this line makes clear the mesh is loaded (avoids memory leaks)
pSphere->load();
}
void OgreMeshRay::GetMeshInformation(const Ogre::ManualObject* manual,
size_t& vertex_count, Ogre::Vector3*& vertices, size_t& index_count,
unsigned long*& indices, const Ogre::Vector3& position,
const Ogre::Quaternion& orient, const Ogre::Vector3& scale) {
std::vector<Ogre::Vector3> returnVertices;
std::vector<unsigned long> returnIndices;
unsigned long thisSectionStart = 0;
for (unsigned int i = 0, size = manual->getNumSections(); i < size; ++i) {
Ogre::ManualObject::ManualObjectSection* section = manual->getSection(
i);
Ogre::RenderOperation* renderOp = section->getRenderOperation();
std::vector<Ogre::Vector3> pushVertices;
//Collect the vertices
{
const Ogre::VertexElement* vertexElement =
renderOp->vertexData->vertexDeclaration->findElementBySemantic(
Ogre::VES_POSITION);
Ogre::HardwareVertexBufferSharedPtr vertexBuffer =
renderOp->vertexData->vertexBufferBinding->getBuffer(
vertexElement->getSource());
char* verticesBuffer = static_cast<char*>(vertexBuffer->lock(
Ogre::HardwareBuffer::HBL_READ_ONLY));
float* positionArrayHolder;
thisSectionStart = returnVertices.size() + pushVertices.size();
pushVertices.reserve(renderOp->vertexData->vertexCount);
for (unsigned int j = 0; j < renderOp->vertexData->vertexCount;
++j) {
vertexElement->baseVertexPointerToElement(
verticesBuffer + j * vertexBuffer->getVertexSize(),
&positionArrayHolder);
Ogre::Vector3 vertexPos = Ogre::Vector3(positionArrayHolder[0],
positionArrayHolder[1], positionArrayHolder[2]);
vertexPos = (orient * (vertexPos * scale)) + position;
pushVertices.push_back(vertexPos);
}
vertexBuffer->unlock();
}
//Collect the indices
{
if (renderOp->useIndexes) {
Ogre::HardwareIndexBufferSharedPtr indexBuffer =
renderOp->indexData->indexBuffer;
if (indexBuffer.isNull()
|| renderOp->operationType
!= Ogre::RenderOperation::OT_TRIANGLE_LIST) {
//No triangles here, so we just drop the collected vertices and move along to the next section.
continue;
} else {
returnVertices.reserve(
returnVertices.size() + pushVertices.size());
returnVertices.insert(returnVertices.end(),
pushVertices.begin(), pushVertices.end());
}
unsigned int* pLong =
static_cast<unsigned int*>(indexBuffer->lock(
Ogre::HardwareBuffer::HBL_READ_ONLY));
unsigned short* pShort =
reinterpret_cast<unsigned short*>(pLong);
returnIndices.reserve(
returnIndices.size() + renderOp->indexData->indexCount);
for (size_t j = 0; j < renderOp->indexData->indexCount; ++j) {
unsigned long index;
//We also have got to remember that for a multi section object, each section has
//different vertices, so the indices will not be correct. To correct this, we
//have to add the position of the first vertex in this section to the index
//(At least I think so...)
if (indexBuffer->getType()
== Ogre::HardwareIndexBuffer::IT_32BIT)
index = static_cast<unsigned long>(pLong[j])
+ thisSectionStart;
else
index = static_cast<unsigned long>(pShort[j])
+ thisSectionStart;
returnIndices.push_back(index);
}
indexBuffer->unlock();
}
}
}
//Now we simply return the data.
index_count = returnIndices.size();
vertex_count = returnVertices.size();
vertices = new Ogre::Vector3[vertex_count];
for (unsigned long i = 0; i < vertex_count; ++i)
vertices[i] = returnVertices[i];
indices = new unsigned long[index_count];
for (unsigned long i = 0; i < index_count; ++i)
indices[i] = returnIndices[i];
//All done.
return;
}
void MeshUtils::meshBuffersToArrays(const Ogre::MeshPtr& mesh, Ogre::Vector3* vertices, unsigned long* indices)
{
bool added_shared = false;
size_t current_offset = 0;
size_t shared_offset = 0;
size_t next_offset = 0;
size_t index_offset = 0;
//const Ogre::Vector3 &position = ent->getParentNode()->_getDerivedPosition();
//const Ogre::Quaternion &orient = ent->getParentNode()->_getDerivedOrientation();
//const Ogre::Vector3 &scale = ent->getParentNode()->_getDerivedScale();
const Ogre::Vector3 &position = Ogre::Vector3::ZERO;
const Ogre::Quaternion &orient = Ogre::Quaternion::IDENTITY;
const Ogre::Vector3 &scale = Ogre::Vector3::UNIT_SCALE;
Ogre::Mesh::SubMeshIterator itr = mesh->getSubMeshIterator();
while (itr.hasMoreElements()) {
Ogre::SubMesh* submesh = itr.getNext();
Ogre::VertexData* vertex_data = submesh->useSharedVertices ? mesh->sharedVertexData : submesh->vertexData;
if ((!submesh->useSharedVertices) || (submesh->useSharedVertices && !added_shared)) {
if (submesh->useSharedVertices) {
added_shared = true;
shared_offset = current_offset;
}
const Ogre::VertexElement* posElem =
vertex_data->vertexDeclaration->findElementBySemantic(Ogre::VES_POSITION);
Ogre::HardwareVertexBufferSharedPtr vbuf =
vertex_data->vertexBufferBinding->getBuffer(posElem->getSource());
unsigned char* vertex =
static_cast<unsigned char*> (vbuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
// There is _no_ baseVertexPointerToElement() which takes an Ogre::Real or a double
// as second argument. So make it float, to avoid trouble when Ogre::Real will
// be comiled/typedefed as double:
// Ogre::Real* pReal;
float* pReal;
for (size_t k = 0; k < vertex_data->vertexCount; ++k, vertex += vbuf->getVertexSize()) {
posElem->baseVertexPointerToElement(vertex, &pReal);
Ogre::Vector3 pt(pReal[0], pReal[1], pReal[2]);
vertices[current_offset + k] = (orient * (pt * scale)) + position;
//vertices[current_offset + k] = pt;
}
vbuf->unlock();
next_offset += vertex_data->vertexCount;
}
Ogre::IndexData* index_data = submesh->indexData;
size_t numTris = index_data->indexCount / 3;
Ogre::HardwareIndexBufferSharedPtr ibuf = index_data->indexBuffer;
bool use32bitindexes = (ibuf->getType() == Ogre::HardwareIndexBuffer::IT_32BIT);
unsigned long* pLong = static_cast<unsigned long*> (ibuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
unsigned short* pShort = reinterpret_cast<unsigned short*> (pLong);
size_t offset = (submesh->useSharedVertices) ? shared_offset : current_offset;
if (use32bitindexes) {
for (size_t k = 0; k < numTris * 3; ++k) {
indices[index_offset++] = pLong[k] + static_cast<unsigned long> (offset);
}
} else {
for (size_t k = 0; k < numTris * 3; ++k) {
indices[index_offset++] = static_cast<unsigned long> (pShort[k]) +
static_cast<unsigned long> (offset);
}
}
ibuf->unlock();
current_offset = next_offset;
}
}
Ogre::SceneNode *TutorialApplication::loadBSP(std::shared_ptr<l2p::UModel> m, bool ignoreNonVisible) {
l2p::Name name = m->package->name;
std::vector<float> vertex_data;
std::vector<uint32_t> index_buf;
l2p::Box bounds;
// Build vertex and index buffer.
for (auto ni = m->nodes.begin(), ne = m->nodes.end(); ni != ne; ++ni) {
l2p::BSPNode &n = *ni;
l2p::BSPSurface &s = m->surfaces[n.surface];
if (ignoreNonVisible && ignoreNode(m.get(), n, s))
continue;
uint32_t vert_start = vertex_data.size() / 8;
const Ogre::Vector3 uvec = ogre_cast(m->vectors[s.U]);
const Ogre::Vector3 vvec = ogre_cast(m->vectors[s.V]);
const Ogre::Vector3 base = ogre_cast(m->points[s.base]);
int usize = 0;
int vsize = 0;
std::shared_ptr<l2p::UTexture> mat = s.material;
if (mat) {
usize = mat->USize;
vsize = mat->VSize;
}
if (usize == 0 || vsize == 0)
usize = vsize = 64;
// Vertex buffer.
if (n.num_verticies > 0) {
l2p::Vector Normal = m->vectors[s.normal];
for (uint32_t vert_index = 0; vert_index < n.num_verticies; ++vert_index) {
const l2p::Vector &pos = m->points[m->vertexes[n.vert_pool + vert_index].vertex];
const Ogre::Vector3 dist(ogre_cast(pos) - base);
const Ogre::Vector2 tcoord((dist | uvec) / float(usize), (dist | vvec) / float(vsize));
bounds += pos;
vertex_data.push_back(pos.X);
vertex_data.push_back(pos.Y);
vertex_data.push_back(pos.Z);
vertex_data.push_back(Normal.X);
vertex_data.push_back(Normal.Y);
vertex_data.push_back(Normal.Z);
vertex_data.push_back(tcoord.x);
vertex_data.push_back(tcoord.y);
}
if (s.flags & l2p::PF_TwoSided) {
for (uint32_t vert_index = 0; vert_index < n.num_verticies; ++vert_index) {
const l2p::Vector &pos = m->points[m->vertexes[n.vert_pool + vert_index].vertex];
const Ogre::Vector3 dist(ogre_cast(pos) - base);
const Ogre::Vector2 tcoord((dist | uvec) / float(usize), (dist | vvec) / float(vsize));
vertex_data.push_back(pos.X);
vertex_data.push_back(pos.Y);
vertex_data.push_back(pos.Z);
vertex_data.push_back(Normal.X);
vertex_data.push_back(Normal.Y);
vertex_data.push_back(-Normal.Z);
vertex_data.push_back(tcoord.x);
vertex_data.push_back(tcoord.y);
}
}
}
// Index buffer.
for (int verti = 2; verti < n.num_verticies; ++verti) {
index_buf.push_back(vert_start);
index_buf.push_back(vert_start + verti - 1);
index_buf.push_back(vert_start + verti);
}
if (s.flags & l2p::PF_TwoSided) {
for (int verti = 2; verti < n.num_verticies; ++verti) {
index_buf.push_back(vert_start);
index_buf.push_back(vert_start + verti);
index_buf.push_back(vert_start + verti - 1);
}
}
}
if (vertex_data.size() == 0 || index_buf.size() == 0)
return nullptr;
Ogre::MeshPtr mesh = Ogre::MeshManager::getSingleton().createManual(Ogre::String(name) + Ogre::String(m->name), "General");
Ogre::VertexData *data = new Ogre::VertexData();
mesh->sharedVertexData = data;
data->vertexCount = vertex_data.size() / 8;
Ogre::VertexDeclaration *decl = data->vertexDeclaration;
uint32_t offset = 0;
decl->addElement(0, offset, Ogre::VET_FLOAT3, Ogre::VES_POSITION);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
decl->addElement(0, offset, Ogre::VET_FLOAT3, Ogre::VES_NORMAL);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
decl->addElement(0, offset, Ogre::VET_FLOAT2, Ogre::VES_TEXTURE_COORDINATES);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT2);
Ogre::HardwareVertexBufferSharedPtr vbuf =
Ogre::HardwareBufferManager::getSingleton().createVertexBuffer(
offset,
data->vertexCount,
Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
vbuf->writeData(0, vbuf->getSizeInBytes(), &vertex_data.front(), true);
data->vertexBufferBinding->setBinding(0, vbuf);
// Setup index buffer.
Ogre::HardwareIndexBufferSharedPtr ibuf =
Ogre::HardwareBufferManager::getSingleton().createIndexBuffer(
Ogre::HardwareIndexBuffer::IT_32BIT,
index_buf.size(),
Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
ibuf->writeData(0, ibuf->getSizeInBytes(), &index_buf.front(), true);
Ogre::SubMesh *subMesh = mesh->createSubMesh();
subMesh->useSharedVertices = true;
subMesh->indexData->indexBuffer = ibuf;
subMesh->indexData->indexCount = index_buf.size();
subMesh->indexData->indexStart = 0;
mesh->_setBounds(Ogre::AxisAlignedBox(bounds.min.X, bounds.min.Y, bounds.min.Z, bounds.max.X, bounds.max.Y, bounds.max.Z));
mesh->_setBoundingSphereRadius((std::max(bounds.max.X - bounds.min.X, std::max(bounds.max.Y - bounds.min.Y, bounds.max.Z - bounds.min.Z))) / 2.0);
mesh->load();
Ogre::Entity *ent = mSceneMgr->createEntity(Ogre::String(name) + Ogre::String(m->name) + "E", Ogre::String(name) + Ogre::String(m->name));
ent->setUserAny(Ogre::Any(static_cast<l2p::UObject*>(m.get())));
ent->setMaterialName("StaticMesh/Default");
Ogre::SceneNode *node = mUnrealCordNode->createChildSceneNode();
node->attachObject(ent);
return node;
}
/*求对象rend和射线ray的全部交点到射线原点的距离
*/
vector<Ogre::Real> BaseManager::Intersect(const Ogre::Ray& ray,Ogre::Renderable *rend){
Ogre::RenderOperation op;
Ogre::VertexElementType vtype;
size_t offset,pkgsize,source,indexNums,vertexNums;
vector<Ogre::Real> result;
rend->getRenderOperation( op );
if( !op.indexData ||
op.operationType==Ogre::RenderOperation::OT_LINE_LIST ||
op.operationType==Ogre::RenderOperation::OT_LINE_STRIP ||
op.operationType==Ogre::RenderOperation::OT_POINT_LIST )
return result;
Ogre::VertexDeclaration* pvd = op.vertexData->vertexDeclaration;
source = -1;
for( size_t i = 0;i < pvd->getElementCount();++i ){
if( pvd->getElement(i)->getSemantic()==Ogre::VES_POSITION ){
source = pvd->getElement(i)->getSource();
offset = pvd->getElement(i)->getOffset();
vtype = pvd->getElement(i)->getType();
break;
}
}
if( source == - 1 || vtype != Ogre::VET_FLOAT3 ) //别的格式目前没有考虑
return result;
/*source对应与一个缓存区
getVertexSize(source)求缓存区中一个紧密数据包的大小
例如：一个数据包里面包括POSITION,COLOR,NORMAL,TEXCROOD然后在这个缓冲
区中循环。而getVertexSize求出这个包的字节大小
例如POSITION(FLOAT3) TEXCROOD(FLOAT2) 这样前面的是12字节后面的是8字节
getVertexSize返回20
*/
pkgsize = pvd->getVertexSize(source);
Ogre::HardwareVertexBufferSharedPtr hvb = op.vertexData->vertexBufferBinding->getBuffer(source);
Ogre::HardwareIndexBufferSharedPtr ivb = op.indexData->indexBuffer;
Ogre::HardwareIndexBuffer::IndexType indexType = op.indexData->indexBuffer->getType();
/*先将顶点数据复制一份，然后变换到世界坐标系
*/
vertexNums = hvb->getNumVertices();
indexNums = ivb->getNumIndexes();
boost::scoped_array<float> vp( new float[3*vertexNums] );
boost::scoped_array<unsigned int> ip( new unsigned int[indexNums] );
{
Ogre::Vector3 p3;
Ogre::Matrix4 mat;
rend->getWorldTransforms( &mat );
float* preal = (float*)hvb->lock( Ogre::HardwareBuffer::HBL_READ_ONLY );
float* ptarget = vp.get();
//这里考虑到对齐，我假设offset和pkgsize都可以被sizeof(float)整除
preal += offset/sizeof(float);
size_t strip = pkgsize/sizeof(float);
for( size_t i = 0; i < vertexNums;++i ){
p3.x = *preal;
p3.y = *(preal+1);
p3.z = *(preal+2);
p3 = mat * p3;
*ptarget++ = p3.x;
*ptarget++ = p3.y;
*ptarget++ = p3.z;
preal += strip;
}
hvb->unlock();
}
//拷贝出顶点数据
{
unsigned int* pindex32 = ip.get();
if( indexType==Ogre::HardwareIndexBuffer::IT_16BIT ){
unsigned short* pi16 = (unsigned short*)ivb->lock( Ogre::HardwareBuffer::HBL_READ_ONLY );
copy( pi16,pi16+indexNums,pindex32 );
}else
memcpy( pindex32,ivb->lock( Ogre::HardwareBuffer::HBL_READ_ONLY ),ivb->getSizeInBytes() );
ivb->unlock();
}
/*数据都准备好了，vp保存了变换好的顶点，ip保存了顶点索引
下面根据情况求交点
*/
switch( op.operationType ){
case Ogre::RenderOperation::OT_TRIANGLE_LIST:
{ /* 0,1,2 组成一个三角 3,4,5 下一个...
*/
Ogre::Vector3 a[3],n;
int index,k = 0;
float* preal = vp.get();
unsigned int* pindex = ip.get();
for( size_t i = 0;i<indexNums;++i ){
if( pindex[i] < vertexNums ){
index = pindex[i]*3; //对应与格式VET_FLOAT3
a[k].x = preal[index];
a[k].y = preal[index+1];
a[k].z = preal[index+2];
if( k == 2 ){//三个点都填满了
//这里使用的是Math3d的求交函数，而不是Ogre::Math的
//原因就在于Ogre::Math的求交点函数不能得到射线背面那个负的交点
std::pair<bool,Ogre::Real> res = Math3d::intersects(ray,a[0],a[1],a[2],true,true);
if( res.first )
result.push_back( res.second );
k = 0;
}else
k++;
}else{
WARNING_LOG("Game::Intersect"<<" Invalid index rang out" << " pindex["<<i<<"]="<<pindex[i] << "("<<vertexNums<<")");
return result;
}
}
}
break;
case Ogre::RenderOperation::OT_TRIANGLE_FAN:
{/* 0,1,2组成一个三角 0,2,3 组成下一个 0,3,4...
*/
assert( false||"Game::Intersect can't support OT_TRIANGLE_FAN " );
}
break;
case Ogre::RenderOperation::OT_TRIANGLE_STRIP:
{//0,1,2组成第一个三角 1,2,3 组成下一个 2,3,4...
assert( false||"Game::Intersect can't support OT_TRIANGLE_STRIP " );
}
break;
default:;
}
return result;
}
void MapView::createTerrain()
{
unsigned int sizeX = mMap->getTerrainSize().x;
unsigned int sizeZ = mMap->getTerrainSize().z;
mTileX = 33;
mTileZ = 33;
unsigned int tileCount = ((sizeX - 1) / (mTileX - 1)) * ((sizeZ - 1) / (mTileZ - 1));
unsigned int vertexPerTile = mTileX * mTileZ;
unsigned int trianglesPerTile = (mTileX - 1) * (mTileZ - 1) * 2;
mMeshes.resize(tileCount);
mEntities.resize(tileCount);
mSceneNodes.resize(tileCount);
// vertexPerTile * 3 vertices * 2 texture coordinates * 3 colours * 3 normals
VertexVector vertices(vertexPerTile * 11);
// trianglesPerTile * 3 indices per each triangle
IndexVector indices[3] =
{
IndexVector(trianglesPerTile * 3 ),
IndexVector(trianglesPerTile * 3 / 4),
IndexVector(trianglesPerTile * 3 / 8)
};
unsigned int vertexIndex, indexIndex = 0, tileIndex = 0;
for (unsigned int zIndex = 0; zIndex < mTileZ - 1; ++zIndex)
{
for (unsigned int xIndex = 0; xIndex < mTileX - 1; ++xIndex)
{
indices[0][indexIndex++] = zIndex * mTileX + xIndex;
indices[0][indexIndex++] = (zIndex + 1) * mTileX + xIndex;
indices[0][indexIndex++] = zIndex * mTileX + xIndex + 1;
indices[0][indexIndex++] = (zIndex + 1) * mTileX + xIndex;
indices[0][indexIndex++] = (zIndex + 1) * mTileX + xIndex + 1;
indices[0][indexIndex++] = zIndex * mTileX + xIndex + 1;
}
}
indexIndex = 0;
for (unsigned int zIndex = 0; zIndex < mTileZ - 1; zIndex += 2)
{
for (unsigned int xIndex = 0; xIndex < mTileX - 1; xIndex += 2)
{
indices[1][indexIndex++] = zIndex * mTileX + xIndex;
indices[1][indexIndex++] = (zIndex + 2) * mTileX + xIndex;
indices[1][indexIndex++] = zIndex * mTileX + xIndex + 2;
indices[1][indexIndex++] = (zIndex + 2) * mTileX + xIndex;
indices[1][indexIndex++] = (zIndex + 2) * mTileX + xIndex + 2;
indices[1][indexIndex++] = zIndex * mTileX + xIndex + 2;
}
}
indexIndex = 0;
for (unsigned int zIndex = 0; zIndex < mTileZ - 1; zIndex += 4)
{
for (unsigned int xIndex = 0; xIndex < mTileX - 1; xIndex += 4)
{
indices[2][indexIndex++] = zIndex * mTileX + xIndex;
indices[2][indexIndex++] = (zIndex + 4) * mTileX + xIndex;
indices[2][indexIndex++] = zIndex * mTileX + xIndex + 4;
indices[2][indexIndex++] = (zIndex + 4) * mTileX + xIndex;
indices[2][indexIndex++] = (zIndex + 4) * mTileX + xIndex + 4;
indices[2][indexIndex++] = zIndex * mTileX + xIndex + 4;
}
}
float scaleX = mMap->getSize().x / (float)(sizeX - 1);
float scaleZ = mMap->getSize().z / (float)(sizeZ - 1);
for (unsigned int zTile = 0; zTile < (sizeZ - 1); zTile += (mTileZ - 1))
{
for (unsigned int xTile = 0; xTile < (sizeX - 1); xTile += (mTileX - 1))
{
vertexIndex = 0;
for (unsigned int zVertex = zTile; zVertex < zTile + mTileZ; ++zVertex)
{
for (unsigned int xVertex = xTile; xVertex < xTile + mTileX; ++xVertex)
{
float yVertex = mMap->getTerrainData()[zVertex * sizeX + xVertex];
vertices[vertexIndex++] = (float)xVertex * scaleX;
vertices[vertexIndex++] = (float)yVertex;
vertices[vertexIndex++] = (float)zVertex * scaleZ;
vertices[vertexIndex++] = (float)xVertex / (float)(sizeX - 1);
vertices[vertexIndex++] = (float)zVertex / (float)(sizeZ - 1);
vertices[vertexIndex++] = 1.0f;
vertices[vertexIndex++] = 1.0f;
vertices[vertexIndex++] = 1.0f;
vertices[vertexIndex++] = 0.0f;
vertices[vertexIndex++] = 1.0f;
vertices[vertexIndex++] = 0.0f;
}
}
std::string name =
"MapView_" + Convert::ToString(mID) +
"_Tile_" + Convert::ToString(tileIndex);
// Create mesh.
mMeshes[tileIndex] = Ogre::MeshManager::getSingleton().createManual(
name, "General").get();
// Create one submesh.
Ogre::SubMesh* subMesh = mMeshes[tileIndex]->createSubMesh();
// Create vertex data structure for vertices shared between submeshes.
mMeshes[tileIndex]->sharedVertexData = new Ogre::VertexData();
mMeshes[tileIndex]->sharedVertexData->vertexCount = vertexPerTile;
// Create declaration (memory format) of vertex data.
Ogre::VertexDeclaration* decl =
mMeshes[tileIndex]->sharedVertexData->vertexDeclaration;
size_t offset = 0;
// 1st buffer
decl->addElement(0, offset, Ogre::VET_FLOAT3, Ogre::VES_POSITION);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
decl->addElement(0, offset, Ogre::VET_FLOAT2, Ogre::VES_TEXTURE_COORDINATES);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT2);
decl->addElement(0, offset, Ogre::VET_FLOAT3, Ogre::VES_DIFFUSE);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
decl->addElement(0, offset, Ogre::VET_FLOAT3, Ogre::VES_NORMAL);
offset += Ogre::VertexElement::getTypeSize(Ogre::VET_FLOAT3);
// Allocate vertex buffer of the requested number of vertices (vertexPerTile)
// and bytes per vertex (offset).
Ogre::HardwareVertexBufferSharedPtr vbuf =
Ogre::HardwareBufferManager::getSingleton().createVertexBuffer(
offset, vertexPerTile, Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
// Upload the vertex data to the card
vbuf->writeData(0, vbuf->getSizeInBytes(), &(vertices.front()), true);
// Set vertex buffer binding so buffer 0 is bound to our vertex buffer.
Ogre::VertexBufferBinding* bind =
mMeshes[tileIndex]->sharedVertexData->vertexBufferBinding;
bind->setBinding(0, vbuf);
// Allocate index buffer of the requested number of vertices .
Ogre::HardwareIndexBufferSharedPtr ibuf = Ogre::HardwareBufferManager::getSingleton().
createIndexBuffer(
Ogre::HardwareIndexBuffer::IT_16BIT,
trianglesPerTile * 3,
Ogre::HardwareBuffer::HBU_STATIC_WRITE_ONLY);
// Upload the index data to the card.
ibuf->writeData(0, ibuf->getSizeInBytes(), &(indices[0].front()), true);
/// Set parameters of the submesh
subMesh->useSharedVertices = true;
subMesh->indexData->indexBuffer = ibuf;
subMesh->indexData->indexCount = indices[0].size();
subMesh->indexData->indexStart = 0;
subMesh->setMaterialName("terrain");
float xMin = vertices[0];
float yMin = vertices[1];
float zMin = vertices[2];
float xMax = vertices[0];
float yMax = vertices[1];
float zMax = vertices[2];
for (unsigned int i = 0; i < vertexPerTile * 11; i += 11)
{
if (vertices[i ] < xMin) xMin = vertices[i ]; else
if (vertices[i ] > xMax) xMax = vertices[i ];
if (vertices[i + 1] < yMin) yMin = vertices[i + 1]; else
if (vertices[i + 1] > yMax) yMax = vertices[i + 1];
if (vertices[i + 2] < zMin) zMin = vertices[i + 2]; else
if (vertices[i + 2] > zMax) zMax = vertices[i + 2];
}
// Set bounding information (for culling).
mMeshes[tileIndex]->_setBounds(Ogre::AxisAlignedBox(xMin, yMin, zMin, xMax, yMax, zMax));
mMeshes[tileIndex]->_setBoundingSphereRadius(1.0f);
// Notify Mesh object that it has been loaded.
mMeshes[tileIndex]->load();
// Create entity.
mEntities[tileIndex] = createEntity(name, name);
mEntities[tileIndex]->setCastShadows(false);
mEntities[tileIndex]->setUserAny(Ogre::Any(this));
// Create scene node.
mSceneNodes[tileIndex] = createSceneNode();
mSceneNodes[tileIndex]->attachObject(mEntities[tileIndex]);
// Advance to next tile.
tileIndex++;
}
}
}
/* -----------------------------------------------------------------------
| the function describe retrieve vertexbuffer from Ogre entity :
| (Ref:http://www.ogre3d.org/tikiwiki/tiki-index.php?page=RetrieveVertexData)
|
| @prama in : Ogre entity
| @pamra out : vertex buffer, size of vertexbuffer, vertex indices, sizeof vertex indices
----------------------------------------------------------------------- */
void
getVertexBuffer(Ogre::Entity* ent, void* &vertices, size_t& vertexCount, void* &indices, size_t& indexCount)
{
bool added_shared = false;
size_t current_offset = 0;
size_t shared_offset = 0;
size_t next_offset = 0;
size_t index_offset = 0;
vertexCount = indexCount = 0;
const Ogre::MeshPtr& mesh = ent->getMesh();
// Calculate vertexCount, indexCount
for ( Ogre::ushort i = 0; i < mesh->getNumSubMeshes(); ++i)
{
Ogre::SubMesh* subMesh = mesh->getSubMesh(i);
if (subMesh->useSharedVertices)
{
if( !added_shared )
{
vertexCount += mesh->sharedVertexData->vertexCount;
added_shared = true;
}
vertexCount += mesh->sharedVertexData->vertexCount;
}
else
vertexCount += subMesh->vertexData->vertexCount;
indexCount += subMesh->indexData->indexCount;
}
// Alloc vertices, indices
vertices = new Ogre::Vector3[ vertexCount ];
indices = new Ogre::ulong[ indexCount ];
added_shared = false;
// Assign vertices data, indices data
for (Ogre::ushort i = 0; i < mesh->getNumSubMeshes(); ++i)
{
Ogre::SubMesh* subMesh = mesh->getSubMesh(i);
Ogre::VertexData* vertexData = subMesh->useSharedVertices ? mesh->sharedVertexData : subMesh->vertexData;
if ((!subMesh->useSharedVertices) || (subMesh->useSharedVertices && !added_shared))
{
if(subMesh->useSharedVertices)
{
added_shared = true;
shared_offset = current_offset;
}
// Retrieve vertices
const Ogre::VertexElement* posElem = vertexData->vertexDeclaration->findElementBySemantic(Ogre::VES_POSITION);
Ogre::HardwareVertexBufferSharedPtr vbuf = vertexData->vertexBufferBinding->getBuffer(posElem->getSource());
Ogre::uchar* vertex = static_cast<Ogre::uchar*>(vbuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
Ogre::Real* data;
for (size_t j = 0 ; j < vertexData->vertexCount ; ++j, vertex += vbuf->getVertexSize())
{
posElem->baseVertexPointerToElement(vertex, &data);
Ogre::Vector3 origin(data[0], data[1], data[2]);
// ((Ogre::Vector3*)vertices)[ current_offset + j ] = (orient * (origin * scale)) + position;
((Ogre::Vector3*)vertices)[ current_offset + j ] = origin;
} // End for
vbuf->unlock();
next_offset += vertexData->vertexCount;
} // End if
// Retrieve indices
Ogre::IndexData* indexData = subMesh->indexData;
size_t trisCount = indexData->indexCount / 3;
Ogre::HardwareIndexBufferSharedPtr ibuf = indexData->indexBuffer;
bool use32bitindexes = (ibuf->getType() == Ogre::HardwareIndexBuffer::IT_32BIT);
void* index = (ibuf->lock(Ogre::HardwareBuffer::HBL_READ_ONLY));
Ogre::ulong offset = (subMesh->useSharedVertices) ? shared_offset : current_offset;
for (Ogre::ulong k = 0; k < trisCount * 3; ++k)
{
if ( use32bitindexes )
((Ogre::ulong*)indices)[ index_offset++ ] = ((Ogre::ulong*)index)[ k + offset ];
else
((Ogre::ulong*)indices)[ index_offset++ ] = ((Ogre::ushort*)index)[ k + offset ];
}
ibuf->unlock();
current_offset = next_offset;
} // End for
}