bool CSTLMeshWriter::writeMeshASCII(io::IWriteFile* file, scene::IMesh* mesh, s32 flags)
{
// write STL MESH header
file->write("solid ",6);
const core::stringc name(SceneManager->getMeshCache()->getMeshFilename(mesh));
file->write(name.c_str(),name.size());
file->write("\n\n",2);
// write mesh buffers
for (u32 i=0; i<mesh->getMeshBufferCount(); ++i)
{
IMeshBuffer* buffer = mesh->getMeshBuffer(i);
if (buffer)
{
const u16 indexCount = buffer->getIndexCount();
switch(buffer->getVertexType())
{
case video::EVT_STANDARD:
{
video::S3DVertex* vtx = (video::S3DVertex*)buffer->getVertices();
for (u32 j=0; j<indexCount; j+=3)
writeFace(file,
vtx[buffer->getIndices()[j]].Pos,
vtx[buffer->getIndices()[j+1]].Pos,
vtx[buffer->getIndices()[j+2]].Pos);
}
break;
case video::EVT_2TCOORDS:
{
video::S3DVertex2TCoords* vtx = (video::S3DVertex2TCoords*)buffer->getVertices();
for (u32 j=0; j<indexCount; j+=3)
writeFace(file,
vtx[buffer->getIndices()[j]].Pos,
vtx[buffer->getIndices()[j+1]].Pos,
vtx[buffer->getIndices()[j+2]].Pos);
}
break;
case video::EVT_TANGENTS:
{
video::S3DVertexTangents* vtx = (video::S3DVertexTangents*)buffer->getVertices();
for (u32 j=0; j<indexCount; j+=3)
writeFace(file,
vtx[buffer->getIndices()[j]].Pos,
vtx[buffer->getIndices()[j+1]].Pos,
vtx[buffer->getIndices()[j+2]].Pos);
}
break;
}
file->write("\n",1);
}
}
file->write("endsolid ",9);
file->write(name.c_str(),name.size());
return true;
}
void CGWIC_Cell::RandomizeTerrain(float subdelta)
{
IMesh* pMesh = terrain->getMesh();
s32 Q = static_cast<s32> (subdelta);
for (u32 n=0; n<pMesh->getMeshBufferCount(); n++) {
IMeshBuffer* pMeshBuffer = pMesh->getMeshBuffer(n);
if (pMeshBuffer->getVertexType() != EVT_2TCOORDS) continue;
S3DVertex2TCoords* pVertices = (S3DVertex2TCoords*)pMeshBuffer->getVertices();
//1. find the current max & min, since we don't want to escalate landscape
float max = 0;
float min = 256;
u32 i;
for (i=0; i<(256*256); i++) {
if (pVertices[i].Pos.Y < min) min = pVertices[i].Pos.Y;
if (pVertices[i].Pos.Y > max) max = pVertices[i].Pos.Y;
}
std::cout << "RandTerr: min=" << min << "; max=" << max << std::endl;
//2. create temp array & randomize it
std::vector<float> tmparr;
float cy;
for (i=0; i<(256*256); i++) {
if (Q) {
cy = Random_FLOAT(max-min);
cy += min;
} else cy = 0;
tmparr.push_back(cy);
}
std::cout << std::endl;
//3. interpolate vertices inside big quads
s32 A = 0;
if (Q) A = 256 / Q + 1;
for (int qx=0; qx<A; qx++)
for (int qy=0; qy<A; qy++) {
//TODO: remove unnecessary vars
int x0 = qx * Q;
int y0 = qy * Q;
int xe = x0 + Q;
if (xe > 255) xe = 255;
int ye = y0 + Q;
if (ye > 255) ye = 255;
float hx0 = tmparr[x0*256+y0];
float hy0 = (qx%2)? tmparr[xe*256+ye]:hx0;
float hxe = tmparr[xe*256+y0];
float hye = tmparr[x0*256+ye];
float lhy = hye - hy0;
float lhx = hxe - hx0;
for (int cx=x0; cx<xe; cx++)
for (int cy=y0; cy<ye; cy++) {
float ch = (((qx%2)?(x0-cx):(cx-x0))/lhx)*lhx+hx0;
ch += (((qy%2)?(y0-cy):(cy-y0))/lhy)*lhy+hy0;
tmparr[cx*256+cy] = ch / 2;
}
}
//4. get result back
for (i=0; i<(256*256); i++)
pVertices[i].Pos.Y = tmparr[i];
break;
}
TerrainChanged();
}
float CGWIC_Cell::GetTerrainHeightUnderPointMetric(irr::core::vector3df pnt)
{
u32 x = floor(pnt.X);
u32 z = floor(pnt.Z);
if (x > 255) x = 255;
if (z > 255) z = 255;
u32 index = x * 256 + z;
IMesh* pMesh = terrain->getMesh();
float res = 0.f;
// float max = 0;
const float scy = terrain->getScale().Y;
//FIXME: get the true position in meters
for (u32 n=0; n<pMesh->getMeshBufferCount(); n++) {
IMeshBuffer* pMeshBuffer = pMesh->getMeshBuffer(n);
if (pMeshBuffer->getVertexType() != EVT_2TCOORDS) continue;
S3DVertex2TCoords* pVertices = (S3DVertex2TCoords*)pMeshBuffer->getVertices();
res = pVertices[index].Pos.Y / scy;
// res = (pVertices[index].Pos.Y + terrain->getPosition().Y) / scy;
// res += terrain->getPosition().Y / GWIC_IRRUNITS_PER_METER;
// std::cerr << "POSIT " << res << std::endl;
// for (u32 k=0; k<(256*256); k++) if (pVertices[k].Pos.Y > max) max = pVertices[k].Pos.Y;
// std::cerr << "MAXX " << max << std::endl;
break;
}
return res;
}
void CTriangleSelector::updateFromMesh(const IMesh* mesh) const
{
if (!mesh)
return;
u32 meshBuffers = mesh->getMeshBufferCount();
u32 triangleCount = 0;
for (u32 i = 0; i < meshBuffers; ++i)
{
IMeshBuffer* buf = mesh->getMeshBuffer(i);
u32 idxCnt = buf->getIndexCount();
const u16* indices = buf->getIndices();
switch (buf->getVertexType())
{
case video::EVT_STANDARD:
{
video::S3DVertex* vtx = (video::S3DVertex*)buf->getVertices();
for (u32 index = 0; index < idxCnt; index += 3)
{
core::triangle3df & tri = Triangles[triangleCount++];
tri.pointA = vtx[indices[index + 0]].Pos;
tri.pointB = vtx[indices[index + 1]].Pos;
tri.pointC = vtx[indices[index + 2]].Pos;
}
}
break;
case video::EVT_2TCOORDS:
{
video::S3DVertex2TCoords* vtx = (video::S3DVertex2TCoords*)buf->getVertices();
for (u32 index = 0; index < idxCnt; index += 3)
{
core::triangle3df & tri = Triangles[triangleCount++];
tri.pointA = vtx[indices[index + 0]].Pos;
tri.pointB = vtx[indices[index + 1]].Pos;
tri.pointC = vtx[indices[index + 2]].Pos;
}
}
break;
case video::EVT_TANGENTS:
{
video::S3DVertexTangents* vtx = (video::S3DVertexTangents*)buf->getVertices();
for (u32 index = 0; index < idxCnt; index += 3)
{
core::triangle3df & tri = Triangles[triangleCount++];
tri.pointA = vtx[indices[index + 0]].Pos;
tri.pointB = vtx[indices[index + 1]].Pos;
tri.pointC = vtx[indices[index + 2]].Pos;
}
}
break;
}
}
}
//-----------------------------------------------------------------------
// e x t r a c t T r i a n g l e s
//-----------------------------------------------------------------------
btTriangleMesh* TMeshShape::extractTriangles(IMesh* mesh,
bool removeDupVertices)
{
vector3df p1, p2, p3;
// 32 bit indices, 3 component vertices - allows for use in decomposition.
btTriangleMesh* triMesh = new btTriangleMesh(true, false);
u32 bufCount = mesh->getMeshBufferCount();
for(u32 i=0;i<bufCount;i++)
{
IMeshBuffer* mbuf = mesh->getMeshBuffer(i);
void* vp = mbuf->getVertices();
E_VERTEX_TYPE vtype = mbuf->getVertexType();
S3DVertex *vstd = (S3DVertex*) vp;
S3DVertex2TCoords *v2t = (S3DVertex2TCoords*) vp;
S3DVertexTangents *vtan = (S3DVertexTangents*)vp;
const u16* ip = mbuf->getIndices();
u32 ic = mbuf->getIndexCount();
u32 fi = 0;
while(fi < ic)
{
S3DVertex *v1,*v2,*v3;
switch(vtype)
{
case EVT_2TCOORDS:
v1 = &v2t[ip[fi++]];
v2 = &v2t[ip[fi++]];
v3 = &v2t[ip[fi++]];
break;
case EVT_TANGENTS:
v1 = &vtan[ip[fi++]];
v2 = &vtan[ip[fi++]];
v3 = &vtan[ip[fi++]];
break;
default:
v1 = &vstd[ip[fi++]];
v2 = &vstd[ip[fi++]];
v3 = &vstd[ip[fi++]];
break;
}
p1 = v1->Pos;
p2 = v2->Pos;
p3 = v3->Pos;
btVector3 b1(p1.X, p1.Y, p1.Z);
btVector3 b2(p2.X, p2.Y, p2.Z);
btVector3 b3(p3.X, p3.Y, p3.Z);
triMesh->addTriangle(b1,b2,b3,removeDupVertices);
}
}
return triMesh;
}
bool CGWIC_Cell::SetTerrainHeightUnderPointMetric(irr::core::vector3df pnt, float height, bool update)
{
u32 x = floor(pnt.X);
u32 z = floor(pnt.Z);
if (x > 255) x = 255;
if (z > 255) z = 255;
u32 index = x * 256 + z;
IMesh* pMesh = terrain->getMesh();
const float scy = terrain->getScale().Y;
for (u32 n=0; n<pMesh->getMeshBufferCount(); n++) {
IMeshBuffer* pMeshBuffer = pMesh->getMeshBuffer(n);
if (pMeshBuffer->getVertexType() != EVT_2TCOORDS) continue;
S3DVertex2TCoords* pVertices = (S3DVertex2TCoords*)pMeshBuffer->getVertices();
pVertices[index].Pos.Y = height * scy;
break;
}
if (update) TerrainChanged();
return true;
}
bool CSTLMeshWriter::writeMeshBinary(io::IWriteFile* file, scene::IMesh* mesh, s32 flags)
{
// write STL MESH header
file->write("binary ",7);
const core::stringc name(SceneManager->getMeshCache()->getMeshFilename(mesh));
const s32 sizeleft = 73-name.size(); // 80 byte header
if (sizeleft<0)
file->write(name.c_str(),73);
else
{
char* buf = new char[80];
memset(buf, 0, 80);
file->write(name.c_str(),name.size());
file->write(buf,sizeleft);
delete [] buf;
}
u32 facenum = 0;
for (u32 j=0; j<mesh->getMeshBufferCount(); ++j)
facenum += mesh->getMeshBuffer(j)->getIndexCount()/3;
file->write(&facenum,4);
// write mesh buffers
for (u32 i=0; i<mesh->getMeshBufferCount(); ++i)
{
IMeshBuffer* buffer = mesh->getMeshBuffer(i);
if (buffer)
{
const u16 indexCount = buffer->getIndexCount();
switch(buffer->getVertexType())
{
case video::EVT_STANDARD:
{
video::S3DVertex* vtx = (video::S3DVertex*)buffer->getVertices();
const u16 attributes = 0;
for (u32 j=0; j<indexCount; j+=3)
{
file->write(&core::plane3df(vtx[buffer->getIndices()[j]].Pos,vtx[buffer->getIndices()[j+1]].Pos,vtx[buffer->getIndices()[j+2]].Pos).Normal, 12);
file->write(&vtx[buffer->getIndices()[j]].Pos, 12);
file->write(&vtx[buffer->getIndices()[j+1]].Pos, 12);
file->write(&vtx[buffer->getIndices()[j+2]].Pos, 12);
file->write(&attributes, 2);
}
}
break;
case video::EVT_2TCOORDS:
{
video::S3DVertex2TCoords* vtx = (video::S3DVertex2TCoords*)buffer->getVertices();
const u16 attributes = 0;
for (u32 j=0; j<indexCount; j+=3)
{
file->write(&core::plane3df(vtx[buffer->getIndices()[j]].Pos,vtx[buffer->getIndices()[j+1]].Pos,vtx[buffer->getIndices()[j+2]].Pos).Normal, 12);
file->write(&vtx[buffer->getIndices()[j]].Pos, 12);
file->write(&vtx[buffer->getIndices()[j+1]].Pos, 12);
file->write(&vtx[buffer->getIndices()[j+2]].Pos, 12);
file->write(&attributes, 2);
}
}
break;
case video::EVT_TANGENTS:
{
video::S3DVertexTangents* vtx = (video::S3DVertexTangents*)buffer->getVertices();
const u16 attributes = 0;
for (u32 j=0; j<indexCount; j+=3)
{
file->write(&core::plane3df(vtx[buffer->getIndices()[j]].Pos,vtx[buffer->getIndices()[j+1]].Pos,vtx[buffer->getIndices()[j+2]].Pos).Normal, 12);
file->write(&vtx[buffer->getIndices()[j]].Pos, 12);
file->write(&vtx[buffer->getIndices()[j+1]].Pos, 12);
file->write(&vtx[buffer->getIndices()[j+2]].Pos, 12);
file->write(&attributes, 2);
}
}
break;
}
}
}
return true;
}
//! draws the element and its children
void CGUIMeshViewer::draw()
{
if (!IsVisible)
return;
IGUISkin* skin = Environment->getSkin();
IVideoDriver* driver = Environment->getVideoDriver();
rect<SINT32> viewPort = AbsoluteRect;
viewPort.LowerRightCorner.x -= 1;
viewPort.LowerRightCorner.y -= 1;
viewPort.UpperLeftCorner.x += 1;
viewPort.UpperLeftCorner.y += 1;
viewPort.clipAgainst(AbsoluteClippingRect);
// draw the frame
rect<SINT32> frameRect(AbsoluteRect);
frameRect.LowerRightCorner.y = frameRect.UpperLeftCorner.y + 1;
skin->draw2DRectangle(this, skin->getColor(EGDC_3D_SHADOW), frameRect, &AbsoluteClippingRect);
frameRect.LowerRightCorner.y = AbsoluteRect.LowerRightCorner.y;
frameRect.LowerRightCorner.x = frameRect.UpperLeftCorner.x + 1;
skin->draw2DRectangle(this, skin->getColor(EGDC_3D_SHADOW), frameRect, &AbsoluteClippingRect);
frameRect = AbsoluteRect;
frameRect.UpperLeftCorner.x = frameRect.LowerRightCorner.x - 1;
skin->draw2DRectangle(this, skin->getColor(EGDC_3D_HIGH_LIGHT), frameRect, &AbsoluteClippingRect);
frameRect = AbsoluteRect;
frameRect.UpperLeftCorner.y = AbsoluteRect.LowerRightCorner.y - 1;
skin->draw2DRectangle(this, skin->getColor(EGDC_3D_HIGH_LIGHT), frameRect, &AbsoluteClippingRect);
// draw the mesh
if (Mesh)
{
//TODO: if outside of screen, dont draw.
// - why is the absolute clipping rect not already the screen?
rect<SINT32> oldViewPort = driver->getViewPort();
driver->setViewPort(viewPort);
Matrix4 mat;
//CameraControl->calculateProjectionMatrix(mat);
//driver->setTransform(TS_PROJECTION, mat);
mat = Matrix4::IDENTITY;
mat.setTrans(Vector3(0, 0, 0));
//mat.setTranslation(Vector3(0, 0, 0));
driver->setTransform(ETS_WORLD, mat);
//CameraControl->calculateViewMatrix(mat);
//driver->setTransform(TS_VIEW, mat);
driver->setMaterial(Material);
UINT32 frame = 0;
if (Mesh->getFrameCount())
frame = (Timer::getTime() / 20) % Mesh->getFrameCount();
const IMesh* const m = Mesh->getMesh(frame);
for (UINT32 i = 0; i<m->getMeshBufferCount(); ++i)
{
IMeshBuffer* mb = m->getMeshBuffer(i);
driver->drawVertexPrimitiveList(mb->getVertices(),
mb->getVertexCount(), mb->getIndices(),
mb->getIndexCount() / 3, mb->getVertexType(),
EPT_TRIANGLES, mb->getIndexType());
}
driver->setViewPort(oldViewPort);
}
IGUIElement::draw();
}
//! sets the mesh from which the shadow volume should be generated.
void CShadowVolumeSceneNode::setMeshToRenderFrom(IMesh* mesh)
{
ShadowVolumesUsed = 0;
s32 oldIndexCount = IndexCount;
s32 oldVertexCount = VertexCount;
VertexCount = 0;
IndexCount = 0;
if (!mesh)
return;
// calculate total amount of vertices and indices
u32 i;
s32 totalVertices = 0;
s32 totalIndices = 0;
u32 bufcnt = mesh->getMeshBufferCount();
IMeshBuffer* b;
for (i=0; i<bufcnt; ++i)
{
b = mesh->getMeshBuffer(i);
totalIndices += b->getIndexCount();
totalVertices += b->getVertexCount();
}
// allocate memory if nececcary
if (totalVertices > VertexCountAllocated)
{
delete [] Vertices;
Vertices = new core::vector3df[totalVertices];
VertexCountAllocated = totalVertices;
}
if (totalIndices > IndexCountAllocated)
{
delete [] Indices;
Indices = new u16[totalIndices];
IndexCountAllocated = totalIndices;
if (UseZFailMethod)
{
delete [] FaceData;
FaceData = new bool[totalIndices / 3];
}
}
// copy mesh
for (i=0; i<bufcnt; ++i)
{
b = mesh->getMeshBuffer(i);
s32 idxcnt = b->getIndexCount();
s32 vtxnow = VertexCount;
const u16* idxp = b->getIndices();
const u16* idxpend = idxp + idxcnt;
for (; idxp!=idxpend; ++idxp)
Indices[IndexCount++] = *idxp + vtxnow;
s32 vtxcnt = b->getVertexCount();
switch(b->getVertexType())
{
case video::EVT_STANDARD:
{
const video::S3DVertex* vp = (video::S3DVertex*)b->getVertices();
const video::S3DVertex* vpend = vp + vtxcnt;
for (; vp!=vpend; ++vp)
Vertices[VertexCount++] = (*vp).Pos;
}
break;
case video::EVT_2TCOORDS:
{
const video::S3DVertex2TCoords* vp = (video::S3DVertex2TCoords*)b->getVertices();
const video::S3DVertex2TCoords* vpend = vp + vtxcnt;
for (; vp!=vpend; ++vp)
Vertices[VertexCount++] = (*vp).Pos;
}
break;
case video::EVT_TANGENTS:
{
const video::S3DVertexTangents* vp = (video::S3DVertexTangents*)b->getVertices();
const video::S3DVertexTangents* vpend = vp + vtxcnt;
for (; vp!=vpend; ++vp)
Vertices[VertexCount++] = (*vp).Pos;
}
break;
}
}
// recalculate adjacency if neccessarry
if (oldVertexCount != VertexCount &&
oldIndexCount != IndexCount && UseZFailMethod)
calculateAdjacency();
// create as much shadow volumes as there are lights but
// do not ignore the max light settings.
u32 lights = SceneManager->getVideoDriver()->getDynamicLightCount();
core::matrix4 mat = Parent->getAbsoluteTransformation();
core::vector3df parentpos = Parent->getAbsolutePosition();
core::vector3df lpos;
mat.makeInverse();
for (i=0; i<lights; ++i)
{
const video::SLight& dl = SceneManager->getVideoDriver()->getDynamicLight(i);
lpos = dl.Position;
if (dl.CastShadows &&
fabs((lpos - parentpos).getLengthSQ()) <= (dl.Radius*dl.Radius*4.0f))
{
mat.transformVect(lpos);
createShadowVolume(lpos);
}
}
}
