void DecalSet::OnWorldBoundingBoxUpdate()
{
if (!skinned_)
{
if (boundingBoxDirty_)
CalculateBoundingBox();
worldBoundingBox_ = boundingBox_.Transformed(node_->GetWorldTransform());
}
else
{
// When using skinning, update world bounding box based on the bones
BoundingBox worldBox;
for (Vector<Bone>::ConstIterator i = bones_.Begin(); i != bones_.End(); ++i)
{
Node* boneNode = i->node_;
if (!boneNode)
continue;
// Use hitbox if available. If not, use only half of the sphere radius
/// \todo The sphere radius should be multiplied with bone scale
if (i->collisionMask_ & BONECOLLISION_BOX)
worldBox.Merge(i->boundingBox_.Transformed(boneNode->GetWorldTransform()));
else if (i->collisionMask_ & BONECOLLISION_SPHERE)
worldBox.Merge(Sphere(boneNode->GetWorldPosition(), i->radius_ * 0.5f));
}
worldBoundingBox_ = worldBox;
}
}
void BillboardSet::OnWorldBoundingBoxUpdate()
{
unsigned enabledBillboards = 0;
const Matrix3x4& worldTransform = node_->GetWorldTransform();
Matrix3x4 billboardTransform = relative_ ? worldTransform : Matrix3x4::IDENTITY;
Vector3 billboardScale = scaled_ ? worldTransform.Scale() : Vector3::ONE;
BoundingBox worldBox;
for (unsigned i = 0; i < billboards_.Size(); ++i)
{
if (!billboards_[i]->enabled_)
continue;
float size = INV_SQRT_TWO * (billboards_[i]->size_.x_ * billboardScale.x_ + billboards_[i]->size_.y_ * billboardScale.y_);
Vector3 center = billboardTransform * billboards_[i]->position_;
Vector3 edge = Vector3::ONE * size;
worldBox.Merge(BoundingBox(center - edge, center + edge));
++enabledBillboards;
}
// Always merge the node's own position to ensure particle emitter updates continue when the relative mode is switched
worldBox.Merge(node_->GetWorldPosition());
worldBoundingBox_ = worldBox;
}
void BillboardSet::OnWorldBoundingBoxUpdate()
{
unsigned enabledBillboards = 0;
const Matrix3x4& worldTransform = node_->GetWorldTransform();
Matrix3x4 billboardTransform = relative_ ? worldTransform : Matrix3x4::IDENTITY;
Vector3 billboardScale = scaled_ ? worldTransform.Scale() : Vector3::ONE;
BoundingBox worldBox;
for (unsigned i = 0; i < billboards_.Size(); ++i)
{
if (!billboards_[i].enabled_)
continue;
float size = INV_SQRT_TWO * (billboards_[i].size_.x_ * billboardScale.x_ + billboards_[i].size_.y_ * billboardScale.y_);
Vector3 center = billboardTransform * billboards_[i].position_;
Vector3 edge = Vector3::ONE * size;
worldBox.Merge(BoundingBox(center - edge, center + edge));
++enabledBillboards;
}
// If no billboards enabled, the bounding box is just the node's world position
if (!enabledBillboards)
worldBox.Merge(node_->GetWorldPosition());
worldBoundingBox_ = worldBox;
}
//显示选中物体的包围盒
void ObjectPositionEditor::HandlePostRenderUpdate(StringHash eventType, VariantMap& eventData)
{
EditorRoot* pEditorRoot = EditorRoot::Instance();
DebugRenderer* debug = pEditorRoot->scene_->GetComponent<DebugRenderer>();
if(debug == NULL)
return;
vector<Node*> nodes = pEditorRoot->GetUnionSelections();
for(int i = 0;i < nodes.size();i ++)
{
Node* node = nodes[i];
if(node->GetComponent<Skybox>() != NULL)
continue;
debug->AddNode(node,1.0f,false);
const Vector<SharedPtr<Component> >& components = node->GetComponents();
for(int j = 0;j < node->GetNumComponents();j ++)
{
Drawable* drawable = dynamic_cast<Drawable*>(components[j].Get());
if(drawable != NULL)
{
debug->AddBoundingBox(drawable->GetWorldBoundingBox(),Color::WHITE,true);
}
}
}
//计算总的
if(nodes.size() > 1)
{
BoundingBox allBox;
for(int i = 0;i < nodes.size();i ++)
{
Node* node = nodes[i];
if(node->GetComponent<Skybox>() != NULL)
continue;
const Vector<SharedPtr<Component> >& components = node->GetComponents();
for(int j = 0;j < node->GetNumComponents();j ++)
{
Drawable* drawable = dynamic_cast<Drawable*>(components[j].Get());
if(drawable != NULL)
{
allBox.Merge(drawable->GetWorldBoundingBox());
}
}
}
debug->AddBoundingBox(allBox,Color::BLUE,true);
}
if(CurrentHoverObject != NULL)
{
CurrentHoverObject->DrawDebugGeometry(debug,false);
}
}
BoundingBox Camera::GetViewBox(const Frustum* frustum, const Scene* scene, bool receivers, bool casters)
{
BoundingBox result;
std::vector<SceneNode*> visibles;
scene->GetVisibleNodes(frustum, visibles);
for (auto& visible : visibles)
{
auto material = visible->GetMaterial().get();
if (!material) continue;
if ((receivers && material->ReceiveShadows()) || (casters && material->CastShadow()))
{
BoundingBox bb(visible->GetWorldBoundingBox());
result.Merge(bb);
}
}
return result;
}
void StaticModelGroup::OnWorldBoundingBoxUpdate()
{
// Update transforms and bounding box at the same time to have to go through the objects only once
unsigned index = 0;
BoundingBox worldBox;
for (unsigned i = 0; i < instanceNodes_.Size(); ++i)
{
Node* node = instanceNodes_[i];
if (!node || !node->IsEnabled())
continue;
const Matrix3x4& worldTransform = node->GetWorldTransform();
worldTransforms_[index++] = worldTransform;
worldBox.Merge(boundingBox_.Transformed(worldTransform));
}
worldBoundingBox_ = worldBox;
// Store the amount of valid instances we found instead of resizing worldTransforms_. This is because this function may be
// called from multiple worker threads simultaneously
numWorldTransforms_ = index;
}
void Terrain::CreatePatchGeometry(TerrainPatch* patch)
{
URHO3D_PROFILE(CreatePatchGeometry);
unsigned row = (unsigned)(patchSize_ + 1);
VertexBuffer* vertexBuffer = patch->GetVertexBuffer();
Geometry* geometry = patch->GetGeometry();
Geometry* maxLodGeometry = patch->GetMaxLodGeometry();
Geometry* occlusionGeometry = patch->GetOcclusionGeometry();
if (vertexBuffer->GetVertexCount() != row * row)
vertexBuffer->SetSize(row * row, MASK_POSITION | MASK_NORMAL | MASK_TEXCOORD1 | MASK_TANGENT);
SharedArrayPtr<unsigned char> cpuVertexData(new unsigned char[row * row * sizeof(Vector3)]);
SharedArrayPtr<unsigned char> occlusionCpuVertexData(new unsigned char[row * row * sizeof(Vector3)]);
float* vertexData = (float*)vertexBuffer->Lock(0, vertexBuffer->GetVertexCount());
float* positionData = (float*)cpuVertexData.Get();
float* occlusionData = (float*)occlusionCpuVertexData.Get();
BoundingBox box;
unsigned occlusionLevel = occlusionLodLevel_;
if (occlusionLevel > numLodLevels_ - 1)
occlusionLevel = numLodLevels_ - 1;
if (vertexData)
{
const IntVector2& coords = patch->GetCoordinates();
int lodExpand = (1 << (occlusionLevel)) - 1;
int halfLodExpand = (1 << (occlusionLevel)) / 2;
for (int z = 0; z <= patchSize_; ++z)
{
for (int x = 0; x <= patchSize_; ++x)
{
int xPos = coords.x_ * patchSize_ + x;
int zPos = coords.y_ * patchSize_ + z;
// Position
Vector3 position((float)x * spacing_.x_, GetRawHeight(xPos, zPos), (float)z * spacing_.z_);
*vertexData++ = position.x_;
*vertexData++ = position.y_;
*vertexData++ = position.z_;
*positionData++ = position.x_;
*positionData++ = position.y_;
*positionData++ = position.z_;
box.Merge(position);
// For vertices that are part of the occlusion LOD, calculate the minimum height in the neighborhood
// to prevent false positive occlusion due to inaccuracy between occlusion LOD & visible LOD
float minHeight = position.y_;
if (halfLodExpand > 0 && (x & lodExpand) == 0 && (z & lodExpand) == 0)
{
int minX = Max(xPos - halfLodExpand, 0);
int maxX = Min(xPos + halfLodExpand, numVertices_.x_ - 1);
int minZ = Max(zPos - halfLodExpand, 0);
int maxZ = Min(zPos + halfLodExpand, numVertices_.y_ - 1);
for (int nZ = minZ; nZ <= maxZ; ++nZ)
{
for (int nX = minX; nX <= maxX; ++nX)
minHeight = Min(minHeight, GetRawHeight(nX, nZ));
}
}
*occlusionData++ = position.x_;
*occlusionData++ = minHeight;
*occlusionData++ = position.z_;
// Normal
Vector3 normal = GetRawNormal(xPos, zPos);
*vertexData++ = normal.x_;
*vertexData++ = normal.y_;
*vertexData++ = normal.z_;
// Texture coordinate
Vector2 texCoord((float)xPos / (float)numVertices_.x_, 1.0f - (float)zPos / (float)numVertices_.y_);
*vertexData++ = texCoord.x_;
*vertexData++ = texCoord.y_;
// Tangent
Vector3 xyz = (Vector3::RIGHT - normal * normal.DotProduct(Vector3::RIGHT)).Normalized();
*vertexData++ = xyz.x_;
*vertexData++ = xyz.y_;
*vertexData++ = xyz.z_;
*vertexData++ = 1.0f;
}
}
vertexBuffer->Unlock();
vertexBuffer->ClearDataLost();
}
patch->SetBoundingBox(box);
if (drawRanges_.Size())
{
unsigned occlusionDrawRange = occlusionLevel << 4;
geometry->SetIndexBuffer(indexBuffer_);
geometry->SetDrawRange(TRIANGLE_LIST, drawRanges_[0].first_, drawRanges_[0].second_, false);
geometry->SetRawVertexData(cpuVertexData, MASK_POSITION);
maxLodGeometry->SetIndexBuffer(indexBuffer_);
maxLodGeometry->SetDrawRange(TRIANGLE_LIST, drawRanges_[0].first_, drawRanges_[0].second_, false);
maxLodGeometry->SetRawVertexData(cpuVertexData, MASK_POSITION);
occlusionGeometry->SetIndexBuffer(indexBuffer_);
occlusionGeometry->SetDrawRange(TRIANGLE_LIST, drawRanges_[occlusionDrawRange].first_, drawRanges_[occlusionDrawRange].second_, false);
occlusionGeometry->SetRawVertexData(occlusionCpuVertexData, MASK_POSITION);
}
patch->ResetLod();
}
void LoadMesh(const String& inputFileName, bool generateTangents, bool splitSubMeshes, bool exportMorphs)
{
File meshFileSource(context_);
meshFileSource.Open(inputFileName);
if (!meshFile_->Load(meshFileSource))
ErrorExit("Could not load input file " + inputFileName);
XMLElement root = meshFile_->GetRoot("mesh");
XMLElement subMeshes = root.GetChild("submeshes");
XMLElement skeletonLink = root.GetChild("skeletonlink");
if (root.IsNull())
ErrorExit("Could not load input file " + inputFileName);
String skeletonName = skeletonLink.GetAttribute("name");
if (!skeletonName.Empty())
LoadSkeleton(GetPath(inputFileName) + GetFileName(skeletonName) + ".skeleton.xml");
// Check whether there's benefit of avoiding 32bit indices by splitting each submesh into own buffer
XMLElement subMesh = subMeshes.GetChild("submesh");
unsigned totalVertices = 0;
unsigned maxSubMeshVertices = 0;
while (subMesh)
{
materialNames_.Push(subMesh.GetAttribute("material"));
XMLElement geometry = subMesh.GetChild("geometry");
if (geometry)
{
unsigned vertices = geometry.GetInt("vertexcount");
totalVertices += vertices;
if (maxSubMeshVertices < vertices)
maxSubMeshVertices = vertices;
}
++numSubMeshes_;
subMesh = subMesh.GetNext("submesh");
}
XMLElement sharedGeometry = root.GetChild("sharedgeometry");
if (sharedGeometry)
{
unsigned vertices = sharedGeometry.GetInt("vertexcount");
totalVertices += vertices;
if (maxSubMeshVertices < vertices)
maxSubMeshVertices = vertices;
}
if (!sharedGeometry && (splitSubMeshes || (totalVertices > 65535 && maxSubMeshVertices <= 65535)))
{
useOneBuffer_ = false;
vertexBuffers_.Resize(numSubMeshes_);
indexBuffers_.Resize(numSubMeshes_);
}
else
{
vertexBuffers_.Resize(1);
indexBuffers_.Resize(1);
}
subMesh = subMeshes.GetChild("submesh");
unsigned indexStart = 0;
unsigned vertexStart = 0;
unsigned subMeshIndex = 0;
PODVector<unsigned> vertexStarts;
vertexStarts.Resize(numSubMeshes_);
while (subMesh)
{
XMLElement geometry = subMesh.GetChild("geometry");
XMLElement faces = subMesh.GetChild("faces");
// If no submesh vertexbuffer, process the shared geometry, but do it only once
unsigned vertices = 0;
if (!geometry)
{
vertexStart = 0;
if (!subMeshIndex)
geometry = root.GetChild("sharedgeometry");
}
if (geometry)
vertices = geometry.GetInt("vertexcount");
ModelSubGeometryLodLevel subGeometryLodLevel;
ModelVertexBuffer* vBuf;
ModelIndexBuffer* iBuf;
if (useOneBuffer_)
{
vBuf = &vertexBuffers_[0];
if (vertices)
vBuf->vertices_.Resize(vertexStart + vertices);
iBuf = &indexBuffers_[0];
subGeometryLodLevel.vertexBuffer_ = 0;
subGeometryLodLevel.indexBuffer_ = 0;
}
else
{
vertexStart = 0;
indexStart = 0;
vBuf = &vertexBuffers_[subMeshIndex];
vBuf->vertices_.Resize(vertices);
iBuf = &indexBuffers_[subMeshIndex];
subGeometryLodLevel.vertexBuffer_ = subMeshIndex;
subGeometryLodLevel.indexBuffer_ = subMeshIndex;
}
// Store the start vertex for later use
vertexStarts[subMeshIndex] = vertexStart;
// Ogre may have multiple buffers in one submesh. These will be merged into one
XMLElement bufferDef;
if (geometry)
bufferDef = geometry.GetChild("vertexbuffer");
while (bufferDef)
{
if (bufferDef.HasAttribute("positions"))
vBuf->elementMask_ |= MASK_POSITION;
if (bufferDef.HasAttribute("normals"))
vBuf->elementMask_ |= MASK_NORMAL;
if (bufferDef.HasAttribute("texture_coords"))
{
vBuf->elementMask_ |= MASK_TEXCOORD1;
if (bufferDef.GetInt("texture_coords") > 1)
vBuf->elementMask_ |= MASK_TEXCOORD2;
}
unsigned vertexNum = vertexStart;
if (vertices)
{
XMLElement vertex = bufferDef.GetChild("vertex");
while (vertex)
{
XMLElement position = vertex.GetChild("position");
if (position)
{
// Convert from right- to left-handed
float x = position.GetFloat("x");
float y = position.GetFloat("y");
float z = position.GetFloat("z");
Vector3 vec(x, y, -z);
vBuf->vertices_[vertexNum].position_ = vec;
boundingBox_.Merge(vec);
}
XMLElement normal = vertex.GetChild("normal");
if (normal)
{
// Convert from right- to left-handed
float x = normal.GetFloat("x");
float y = normal.GetFloat("y");
float z = normal.GetFloat("z");
Vector3 vec(x, y, -z);
vBuf->vertices_[vertexNum].normal_ = vec;
}
XMLElement uv = vertex.GetChild("texcoord");
if (uv)
{
float x = uv.GetFloat("u");
float y = uv.GetFloat("v");
Vector2 vec(x, y);
vBuf->vertices_[vertexNum].texCoord1_ = vec;
if (vBuf->elementMask_ & MASK_TEXCOORD2)
{
uv = uv.GetNext("texcoord");
if (uv)
{
float x = uv.GetFloat("u");
float y = uv.GetFloat("v");
Vector2 vec(x, y);
vBuf->vertices_[vertexNum].texCoord2_ = vec;
}
}
}
vertexNum++;
vertex = vertex.GetNext("vertex");
}
}
bufferDef = bufferDef.GetNext("vertexbuffer");
}
unsigned triangles = faces.GetInt("count");
unsigned indices = triangles * 3;
XMLElement triangle = faces.GetChild("face");
while (triangle)
{
unsigned v1 = triangle.GetInt("v1");
unsigned v2 = triangle.GetInt("v2");
unsigned v3 = triangle.GetInt("v3");
iBuf->indices_.Push(v3 + vertexStart);
iBuf->indices_.Push(v2 + vertexStart);
iBuf->indices_.Push(v1 + vertexStart);
triangle = triangle.GetNext("face");
}
subGeometryLodLevel.indexStart_ = indexStart;
subGeometryLodLevel.indexCount_ = indices;
if (vertexStart + vertices > 65535)
iBuf->indexSize_ = sizeof(unsigned);
XMLElement boneAssignments = subMesh.GetChild("boneassignments");
if (bones_.Size())
{
if (boneAssignments)
{
XMLElement boneAssignment = boneAssignments.GetChild("vertexboneassignment");
while (boneAssignment)
{
unsigned vertex = boneAssignment.GetInt("vertexindex") + vertexStart;
unsigned bone = boneAssignment.GetInt("boneindex");
float weight = boneAssignment.GetFloat("weight");
BoneWeightAssignment assign;
assign.boneIndex_ = bone;
assign.weight_ = weight;
// Source data might have 0 weights. Disregard these
if (assign.weight_ > 0.0f)
{
subGeometryLodLevel.boneWeights_[vertex].Push(assign);
// Require skinning weight to be sufficiently large before vertex contributes to bone hitbox
if (assign.weight_ > 0.33f)
{
// Check distance of vertex from bone to get bone max. radius information
Vector3 bonePos = bones_[bone].derivedPosition_;
Vector3 vertexPos = vBuf->vertices_[vertex].position_;
float distance = (bonePos - vertexPos).Length();
if (distance > bones_[bone].radius_)
{
bones_[bone].collisionMask_ |= 1;
bones_[bone].radius_ = distance;
}
// Build the hitbox for the bone
bones_[bone].boundingBox_.Merge(bones_[bone].inverseWorldTransform_ * (vertexPos));
bones_[bone].collisionMask_ |= 2;
}
}
boneAssignment = boneAssignment.GetNext("vertexboneassignment");
}
}
if ((subGeometryLodLevel.boneWeights_.Size()) && bones_.Size())
{
vBuf->elementMask_ |= MASK_BLENDWEIGHTS | MASK_BLENDINDICES;
bool sorted = false;
// If amount of bones is larger than supported by HW skinning, must remap per submesh
if (bones_.Size() > maxBones_)
{
HashMap<unsigned, unsigned> usedBoneMap;
unsigned remapIndex = 0;
for (HashMap<unsigned, PODVector<BoneWeightAssignment> >::Iterator i =
subGeometryLodLevel.boneWeights_.Begin(); i != subGeometryLodLevel.boneWeights_.End(); ++i)
{
// Sort the bone assigns by weight
Sort(i->second_.Begin(), i->second_.End(), CompareWeights);
// Use only the first 4 weights
for (unsigned j = 0; j < i->second_.Size() && j < 4; ++j)
{
unsigned originalIndex = i->second_[j].boneIndex_;
if (!usedBoneMap.Contains(originalIndex))
{
usedBoneMap[originalIndex] = remapIndex;
remapIndex++;
}
i->second_[j].boneIndex_ = usedBoneMap[originalIndex];
}
}
// If still too many bones in one subgeometry, error
if (usedBoneMap.Size() > maxBones_)
ErrorExit("Too many bones (limit " + String(maxBones_) + ") in submesh " + String(subMeshIndex + 1));
// Write mapping of vertex buffer bone indices to original bone indices
subGeometryLodLevel.boneMapping_.Resize(usedBoneMap.Size());
for (HashMap<unsigned, unsigned>::Iterator j = usedBoneMap.Begin(); j != usedBoneMap.End(); ++j)
subGeometryLodLevel.boneMapping_[j->second_] = j->first_;
sorted = true;
}
for (HashMap<unsigned, PODVector<BoneWeightAssignment> >::Iterator i = subGeometryLodLevel.boneWeights_.Begin();
i != subGeometryLodLevel.boneWeights_.End(); ++i)
{
// Sort the bone assigns by weight, if not sorted yet in bone remapping pass
if (!sorted)
Sort(i->second_.Begin(), i->second_.End(), CompareWeights);
float totalWeight = 0.0f;
float normalizationFactor = 0.0f;
// Calculate normalization factor in case there are more than 4 blend weights, or they do not add up to 1
for (unsigned j = 0; j < i->second_.Size() && j < 4; ++j)
totalWeight += i->second_[j].weight_;
if (totalWeight > 0.0f)
normalizationFactor = 1.0f / totalWeight;
for (unsigned j = 0; j < i->second_.Size() && j < 4; ++j)
{
vBuf->vertices_[i->first_].blendIndices_[j] = i->second_[j].boneIndex_;
vBuf->vertices_[i->first_].blendWeights_[j] = i->second_[j].weight_ * normalizationFactor;
}
// If there are less than 4 blend weights, fill rest with zero
for (unsigned j = i->second_.Size(); j < 4; ++j)
{
vBuf->vertices_[i->first_].blendIndices_[j] = 0;
vBuf->vertices_[i->first_].blendWeights_[j] = 0.0f;
}
vBuf->vertices_[i->first_].hasBlendWeights_ = true;
}
}
}
else if (boneAssignments)
PrintLine("No skeleton loaded, skipping skinning information");
// Calculate center for the subgeometry
Vector3 center = Vector3::ZERO;
for (unsigned i = 0; i < iBuf->indices_.Size(); i += 3)
{
center += vBuf->vertices_[iBuf->indices_[i]].position_;
center += vBuf->vertices_[iBuf->indices_[i + 1]].position_;
center += vBuf->vertices_[iBuf->indices_[i + 2]].position_;
}
if (iBuf->indices_.Size())
center /= (float)iBuf->indices_.Size();
subGeometryCenters_.Push(center);
indexStart += indices;
vertexStart += vertices;
OptimizeIndices(&subGeometryLodLevel, vBuf, iBuf);
PrintLine("Processed submesh " + String(subMeshIndex + 1) + ": " + String(vertices) + " vertices " +
String(triangles) + " triangles");
Vector<ModelSubGeometryLodLevel> thisSubGeometry;
thisSubGeometry.Push(subGeometryLodLevel);
subGeometries_.Push(thisSubGeometry);
subMesh = subMesh.GetNext("submesh");
subMeshIndex++;
}
// Process LOD levels, if any
XMLElement lods = root.GetChild("levelofdetail");
if (lods)
{
try
{
// For now, support only generated LODs, where the vertices are the same
XMLElement lod = lods.GetChild("lodgenerated");
while (lod)
{
float distance = M_EPSILON;
if (lod.HasAttribute("fromdepthsquared"))
distance = sqrtf(lod.GetFloat("fromdepthsquared"));
if (lod.HasAttribute("value"))
distance = lod.GetFloat("value");
XMLElement lodSubMesh = lod.GetChild("lodfacelist");
while (lodSubMesh)
{
unsigned subMeshIndex = lodSubMesh.GetInt("submeshindex");
unsigned triangles = lodSubMesh.GetInt("numfaces");
ModelSubGeometryLodLevel newLodLevel;
ModelSubGeometryLodLevel& originalLodLevel = subGeometries_[subMeshIndex][0];
// Copy all initial values
newLodLevel = originalLodLevel;
ModelVertexBuffer* vBuf;
ModelIndexBuffer* iBuf;
if (useOneBuffer_)
{
vBuf = &vertexBuffers_[0];
iBuf = &indexBuffers_[0];
}
else
{
vBuf = &vertexBuffers_[subMeshIndex];
iBuf = &indexBuffers_[subMeshIndex];
}
unsigned indexStart = iBuf->indices_.Size();
unsigned indexCount = triangles * 3;
unsigned vertexStart = vertexStarts[subMeshIndex];
newLodLevel.distance_ = distance;
newLodLevel.indexStart_ = indexStart;
newLodLevel.indexCount_ = indexCount;
// Append indices to the original index buffer
XMLElement triangle = lodSubMesh.GetChild("face");
while (triangle)
{
unsigned v1 = triangle.GetInt("v1");
unsigned v2 = triangle.GetInt("v2");
unsigned v3 = triangle.GetInt("v3");
iBuf->indices_.Push(v3 + vertexStart);
iBuf->indices_.Push(v2 + vertexStart);
iBuf->indices_.Push(v1 + vertexStart);
triangle = triangle.GetNext("face");
}
OptimizeIndices(&newLodLevel, vBuf, iBuf);
subGeometries_[subMeshIndex].Push(newLodLevel);
PrintLine("Processed LOD level for submesh " + String(subMeshIndex + 1) + ": distance " + String(distance));
lodSubMesh = lodSubMesh.GetNext("lodfacelist");
}
lod = lod.GetNext("lodgenerated");
}
}
catch (...) {}
}
// Process poses/morphs
// First find out all pose definitions
if (exportMorphs)
{
try
{
Vector<XMLElement> poses;
XMLElement posesRoot = root.GetChild("poses");
if (posesRoot)
{
XMLElement pose = posesRoot.GetChild("pose");
while (pose)
{
poses.Push(pose);
pose = pose.GetNext("pose");
}
}
// Then process animations using the poses
XMLElement animsRoot = root.GetChild("animations");
if (animsRoot)
{
XMLElement anim = animsRoot.GetChild("animation");
while (anim)
{
String name = anim.GetAttribute("name");
float length = anim.GetFloat("length");
HashSet<unsigned> usedPoses;
XMLElement tracks = anim.GetChild("tracks");
if (tracks)
{
XMLElement track = tracks.GetChild("track");
while (track)
{
XMLElement keyframes = track.GetChild("keyframes");
if (keyframes)
{
XMLElement keyframe = keyframes.GetChild("keyframe");
while (keyframe)
{
float time = keyframe.GetFloat("time");
XMLElement poseref = keyframe.GetChild("poseref");
// Get only the end pose
if (poseref && time == length)
usedPoses.Insert(poseref.GetInt("poseindex"));
keyframe = keyframe.GetNext("keyframe");
}
}
track = track.GetNext("track");
}
}
if (usedPoses.Size())
{
ModelMorph newMorph;
newMorph.name_ = name;
if (useOneBuffer_)
newMorph.buffers_.Resize(1);
else
newMorph.buffers_.Resize(usedPoses.Size());
unsigned bufIndex = 0;
for (HashSet<unsigned>::Iterator i = usedPoses.Begin(); i != usedPoses.End(); ++i)
{
XMLElement pose = poses[*i];
unsigned targetSubMesh = pose.GetInt("index");
XMLElement poseOffset = pose.GetChild("poseoffset");
if (useOneBuffer_)
newMorph.buffers_[bufIndex].vertexBuffer_ = 0;
else
newMorph.buffers_[bufIndex].vertexBuffer_ = targetSubMesh;
newMorph.buffers_[bufIndex].elementMask_ = MASK_POSITION;
ModelVertexBuffer* vBuf = &vertexBuffers_[newMorph.buffers_[bufIndex].vertexBuffer_];
while (poseOffset)
{
// Convert from right- to left-handed
unsigned vertexIndex = poseOffset.GetInt("index") + vertexStarts[targetSubMesh];
float x = poseOffset.GetFloat("x");
float y = poseOffset.GetFloat("y");
float z = poseOffset.GetFloat("z");
Vector3 vec(x, y, -z);
if (vBuf->morphCount_ == 0)
{
vBuf->morphStart_ = vertexIndex;
vBuf->morphCount_ = 1;
}
else
{
unsigned first = vBuf->morphStart_;
unsigned last = first + vBuf->morphCount_ - 1;
if (vertexIndex < first)
first = vertexIndex;
if (vertexIndex > last)
last = vertexIndex;
vBuf->morphStart_ = first;
vBuf->morphCount_ = last - first + 1;
}
ModelVertex newVertex;
newVertex.position_ = vec;
newMorph.buffers_[bufIndex].vertices_.Push(MakePair(vertexIndex, newVertex));
poseOffset = poseOffset.GetNext("poseoffset");
}
if (!useOneBuffer_)
++bufIndex;
}
morphs_.Push(newMorph);
PrintLine("Processed morph " + name + " with " + String(usedPoses.Size()) + " sub-poses");
}
anim = anim.GetNext("animation");
}
}
}
catch (...) {}
}
// Check any of the buffers for vertices with missing blend weight assignments
for (unsigned i = 0; i < vertexBuffers_.Size(); ++i)
{
if (vertexBuffers_[i].elementMask_ & MASK_BLENDWEIGHTS)
{
for (unsigned j = 0; j < vertexBuffers_[i].vertices_.Size(); ++j)
if (!vertexBuffers_[i].vertices_[j].hasBlendWeights_)
ErrorExit("Found a vertex with missing skinning information");
}
}
// Tangent generation
if (generateTangents)
{
for (unsigned i = 0; i < subGeometries_.Size(); ++i)
{
for (unsigned j = 0; j < subGeometries_[i].Size(); ++j)
{
ModelVertexBuffer& vBuf = vertexBuffers_[subGeometries_[i][j].vertexBuffer_];
ModelIndexBuffer& iBuf = indexBuffers_[subGeometries_[i][j].indexBuffer_];
unsigned indexStart = subGeometries_[i][j].indexStart_;
unsigned indexCount = subGeometries_[i][j].indexCount_;
// If already has tangents, do not regenerate
if (vBuf.elementMask_ & MASK_TANGENT || vBuf.vertices_.Empty() || iBuf.indices_.Empty())
continue;
vBuf.elementMask_ |= MASK_TANGENT;
if ((vBuf.elementMask_ & (MASK_POSITION | MASK_NORMAL | MASK_TEXCOORD1)) != (MASK_POSITION | MASK_NORMAL |
MASK_TEXCOORD1))
ErrorExit("To generate tangents, positions normals and texcoords are required");
GenerateTangents(&vBuf.vertices_[0], sizeof(ModelVertex), &iBuf.indices_[0], sizeof(unsigned), indexStart,
indexCount, offsetof(ModelVertex, normal_), offsetof(ModelVertex, texCoord1_), offsetof(ModelVertex,
tangent_));
PrintLine("Generated tangents");
}
}
}
}
void Terrain::CreatePatchGeometry(TerrainPatch* patch)
{
PROFILE(CreatePatchGeometry);
unsigned row = patchSize_ + 1;
VertexBuffer* vertexBuffer = patch->GetVertexBuffer();
Geometry* geometry = patch->GetGeometry();
Geometry* maxLodGeometry = patch->GetMaxLodGeometry();
Geometry* minLodGeometry = patch->GetMinLodGeometry();
if (vertexBuffer->GetVertexCount() != row * row)
vertexBuffer->SetSize(row * row, MASK_POSITION | MASK_NORMAL | MASK_TEXCOORD1 | MASK_TANGENT);
SharedArrayPtr<unsigned char> cpuVertexData(new unsigned char[row * row * sizeof(Vector3)]);
float* vertexData = (float*)vertexBuffer->Lock(0, vertexBuffer->GetVertexCount());
float* positionData = (float*)cpuVertexData.Get();
BoundingBox box;
if (vertexData)
{
const IntVector2& coords = patch->GetCoordinates();
for (int z1 = 0; z1 <= patchSize_; ++z1)
{
for (int x1 = 0; x1 <= patchSize_; ++x1)
{
int xPos = coords.x_ * patchSize_ + x1;
int zPos = coords.y_ * patchSize_ + z1;
// Position
Vector3 position((float)x1 * spacing_.x_, GetRawHeight(xPos, zPos), (float)z1 * spacing_.z_);
*vertexData++ = position.x_;
*vertexData++ = position.y_;
*vertexData++ = position.z_;
*positionData++ = position.x_;
*positionData++ = position.y_;
*positionData++ = position.z_;
box.Merge(position);
// Normal
Vector3 normal = GetRawNormal(xPos, zPos);
*vertexData++ = normal.x_;
*vertexData++ = normal.y_;
*vertexData++ = normal.z_;
// Texture coordinate
Vector2 texCoord((float)xPos / (float)numVertices_.x_, 1.0f - (float)zPos / (float)numVertices_.y_);
*vertexData++ = texCoord.x_;
*vertexData++ = texCoord.y_;
// Tangent
Vector3 xyz = (Vector3::RIGHT - normal * normal.DotProduct(Vector3::RIGHT)).Normalized();
*vertexData++ = xyz.x_;
*vertexData++ = xyz.y_;
*vertexData++ = xyz.z_;
*vertexData++ = 1.0f;
}
}
vertexBuffer->Unlock();
vertexBuffer->ClearDataLost();
}
patch->SetBoundingBox(box);
if (drawRanges_.Size())
{
unsigned lastDrawRange = drawRanges_.Size() - 1;
geometry->SetIndexBuffer(indexBuffer_);
geometry->SetDrawRange(TRIANGLE_LIST, drawRanges_[0].first_, drawRanges_[0].second_, false);
geometry->SetRawVertexData(cpuVertexData, sizeof(Vector3), MASK_POSITION);
maxLodGeometry->SetIndexBuffer(indexBuffer_);
maxLodGeometry->SetDrawRange(TRIANGLE_LIST, drawRanges_[0].first_, drawRanges_[0].second_, false);
maxLodGeometry->SetRawVertexData(cpuVertexData, sizeof(Vector3), MASK_POSITION);
minLodGeometry->SetIndexBuffer(indexBuffer_);
minLodGeometry->SetDrawRange(TRIANGLE_LIST, drawRanges_[lastDrawRange].first_, drawRanges_[lastDrawRange].second_, false);
minLodGeometry->SetRawVertexData(cpuVertexData, sizeof(Vector3), MASK_POSITION);
}
// Offset the occlusion geometry by vertex spacing to reduce possibility of over-aggressive occlusion
patch->SetOcclusionOffset(-0.5f * (spacing_.x_ + spacing_.z_));
patch->ResetLod();
}
void WriteVertex(float*& dest, aiMesh* mesh, unsigned index, unsigned elementMask, BoundingBox& box,
const Matrix3x4& vertexTransform, const Matrix3& normalTransform, Vector<PODVector<unsigned char> >& blendIndices,
Vector<PODVector<float> >& blendWeights)
{
Vector3 vertex = vertexTransform * ToVector3(mesh->mVertices[index]);
box.Merge(vertex);
*dest++ = vertex.x_;
*dest++ = vertex.y_;
*dest++ = vertex.z_;
if (elementMask & MASK_NORMAL)
{
Vector3 normal = normalTransform * ToVector3(mesh->mNormals[index]);
*dest++ = normal.x_;
*dest++ = normal.y_;
*dest++ = normal.z_;
}
if (elementMask & MASK_COLOR)
{
*((unsigned*)dest) = Color(mesh->mColors[0][index].r, mesh->mColors[0][index].g, mesh->mColors[0][index].b,
mesh->mColors[0][index].a).ToUInt();
++dest;
}
if (elementMask & MASK_TEXCOORD1)
{
Vector3 texCoord = ToVector3(mesh->mTextureCoords[0][index]);
*dest++ = texCoord.x_;
*dest++ = texCoord.y_;
}
if (elementMask & MASK_TEXCOORD2)
{
Vector3 texCoord = ToVector3(mesh->mTextureCoords[1][index]);
*dest++ = texCoord.x_;
*dest++ = texCoord.y_;
}
if (elementMask & MASK_TANGENT)
{
Vector3 tangent = normalTransform * ToVector3(mesh->mTangents[index]);
Vector3 normal = normalTransform * ToVector3(mesh->mNormals[index]);
Vector3 bitangent = normalTransform * ToVector3(mesh->mBitangents[index]);
// Check handedness
float w = 1.0f;
if ((tangent.CrossProduct(normal)).DotProduct(bitangent) < 0.5f)
w = -1.0f;
*dest++ = tangent.x_;
*dest++ = tangent.y_;
*dest++ = tangent.z_;
*dest++ = w;
}
if (elementMask & MASK_BLENDWEIGHTS)
{
for (unsigned i = 0; i < 4; ++i)
{
if (i < blendWeights[index].Size())
*dest++ = blendWeights[index][i];
else
*dest++ = 0.0f;
}
}
if (elementMask & MASK_BLENDINDICES)
{
unsigned char* destBytes = (unsigned char*)dest;
++dest;
for (unsigned i = 0; i < 4; ++i)
{
if (i < blendIndices[index].Size())
*destBytes++ = blendIndices[index][i];
else
*destBytes++ = 0;
}
}
}
