void CullSystem::Cull( Frustum& frus, TreeNode<VisCell>& node, std::vector<std::list<Ptr<Renderable>>>& outRenderables) { InterSectResult result = frus.InterSect(node.GetContent().GetAABB()); if ( !result==INTERSECTOUT ) { std::list<Ptr<Renderable>>::iterator iter = node.GetContent().GetRenderables().begin(); if (result== INTERSECTIN) { for (;iter!=node.GetContent().GetRenderables().end();iter++) { RenderType rType = (*iter)->GetRenderType(); outRenderables[rType].push_back((*iter)); } } else { for (;iter!=node.GetContent().GetRenderables().end();iter++) { if ( frus.InterSect((*iter)->GetSubMesh()->GetVertexBuffer()->GetBBox())!= INTERSECTOUT) { RenderType rType = (*iter)->GetRenderType(); outRenderables[rType].push_back((*iter)); } } } for (int i = 0 ;i<(int)node.GetChildren().size();i++) { Cull( frus,*node.GetChildren()[i],outRenderables ); } } }
void CullSystem::Cull( matrix44& vp, TreeNode<VisCell>& node, std::vector<std::list<Ptr<Renderable>>>& outRenderables ) { InterSectResult result = node.GetContent().GetAABB().InterSect(vp); if ( !result==INTERSECTOUT ) { std::list<Ptr<Renderable>>::iterator iter = node.GetContent().GetRenderables().begin(); if (result== INTERSECTIN) { for (;iter!=node.GetContent().GetRenderables().end();iter++) { RenderType rType = (*iter)->GetRenderType(); outRenderables[rType].push_back((*iter)); } } else { for (;iter!=node.GetContent().GetRenderables().end();iter++) { if ( (*iter)->GetWorldBBox().InterSect(vp)!= INTERSECTOUT) { RenderType rType = (*iter)->GetRenderType(); outRenderables[rType].push_back((*iter)); } } } for (int i = 0 ;i<(int)node.GetChildren().size();i++) { Cull( vp,*node.GetChildren()[i],outRenderables ); } } }
void CullSystem::BuildOctTree( TreeNode<VisCell>& node ) { if (node.GetDepth() == m_Depth ) { return; } node.GetChildren().resize(8); for( int i = 0 ;i<8; i++ ) { node.GetChildren()[i] = o_new( TreeNode<VisCell> ); node.GetChildren()[i]->SetParent( &node ); node.GetChildren()[i]->SetDepth( node.GetDepth()+1 ); node.GetChildren()[i]->SetIndex(i); VisCell& parentCell = node.GetContent(); aabbox& box = parentCell.GetAABB(); aabbox baseBox; point middle = (box.GetMax()+box.GetMin())*0.5f; float xHalf = box.GetMax().X() - middle.X(); float yHalf = box.GetMax().Y() - middle.Y(); float zHalf = box.GetMax().Z() - middle.Z(); baseBox.SetMax( box.GetMax() ); baseBox.SetMin( middle ); point& pMax = baseBox.GetMax(); point& pMin = baseBox.GetMin(); if ( i%2==1 ) { pMax.X()-=xHalf; pMin.X()-=xHalf; } if ( i>=4 ) { pMax.Y()-=yHalf; pMin.Y()-=yHalf; if (i>=6) { pMax.Z()-=zHalf; pMin.Z()-=zHalf; } } else if( i>=2 ) { pMax.Z()-=zHalf; pMin.Z()-=zHalf; } VisCell& childCell = node.GetChildren()[i]->GetContent(); childCell.SetAABB(baseBox); BuildOctTree( *node.GetChildren()[i]); } }
void CullSystem::AttachRenderable(const Ptr<Renderable>& renderable ) { TreeNode<VisCell>* pContentNode = NULL; pContentNode = OctTreeBoundCheck( m_RootNode ,renderable->GetWorldBBox() ) ; if (pContentNode) { pContentNode->GetContent().GetRenderables().push_back(renderable); } }