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Just tidying up the MeshDecimator stuff a bit...

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This commit is contained in:
David Williams
2011-01-05 21:32:31 +00:00
parent f8c036bcf6
commit d0e4b06051
2 changed files with 49 additions and 34 deletions
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47
library/PolyVoxCore/include/MeshDecimator.h
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@ -28,24 +28,39 @@ freely, subject to the following restrictions:
namespace PolyVox
{
struct InitialVertexMetadata
{
Vector3DFloat normal;
bool isOnMaterialEdge;
std::bitset<VF_NO_OF_FLAGS> vertexFlags;
};
struct Triangle
{
uint32_t v0;
uint32_t v1;
uint32_t v2;
Vector3DFloat normal;
};
template <typename VertexType>
class MeshDecimator
{
//Used to keep track of when a vertex is
//on one or more faces of the region
enum POLYVOXCORE_API RegionFaceFlags
{
RFF_ON_REGION_FACE_NEG_X,
RFF_ON_REGION_FACE_POS_X ,
RFF_ON_REGION_FACE_NEG_Y ,
RFF_ON_REGION_FACE_POS_Y ,
RFF_ON_REGION_FACE_NEG_Z ,
RFF_ON_REGION_FACE_POS_Z,
RFF_NO_OF_REGION_FACE_FLAGS
};
//Data about the initial mesh - this
//will be fill in once at the start
struct InitialVertexMetadata
{
Vector3DFloat normal;
bool isOnMaterialEdge;
std::bitset<RFF_NO_OF_REGION_FACE_FLAGS> isOnRegionFace;
};
//Representing a triangle for decimation purposes.
struct Triangle
{
uint32_t v0;
uint32_t v1;
uint32_t v2;
Vector3DFloat normal;
};
public:
MeshDecimator(SurfaceMesh<VertexType>* pInputMesh/*, SurfaceMesh<PositionMaterial>* pMeshOutput*/);
@ -63,7 +78,7 @@ namespace PolyVox
//SurfaceMesh<PositionMaterial>* pMeshOutput;
uint32_t performDecimationPass(float fMinDotProductForCollapse);
bool isSubset(std::bitset<VF_NO_OF_FLAGS> a, std::bitset<VF_NO_OF_FLAGS> b);
bool isSubset(std::bitset<RFF_NO_OF_REGION_FACE_FLAGS> a, std::bitset<RFF_NO_OF_REGION_FACE_FLAGS> b);
bool canCollapseEdge(uint32_t uSrc, uint32_t uDest);
bool canCollapseNormalEdge(uint32_t uSrc, uint32_t uDst);