mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-11-30 23:30:07 +00:00
377 lines
14 KiB
C++
377 lines
14 KiB
C++
//
|
|
// Copyright (C) Pixar. All rights reserved.
|
|
//
|
|
// This license governs use of the accompanying software. If you
|
|
// use the software, you accept this license. If you do not accept
|
|
// the license, do not use the software.
|
|
//
|
|
// 1. Definitions
|
|
// The terms "reproduce," "reproduction," "derivative works," and
|
|
// "distribution" have the same meaning here as under U.S.
|
|
// copyright law. A "contribution" is the original software, or
|
|
// any additions or changes to the software.
|
|
// A "contributor" is any person or entity that distributes its
|
|
// contribution under this license.
|
|
// "Licensed patents" are a contributor's patent claims that read
|
|
// directly on its contribution.
|
|
//
|
|
// 2. Grant of Rights
|
|
// (A) Copyright Grant- Subject to the terms of this license,
|
|
// including the license conditions and limitations in section 3,
|
|
// each contributor grants you a non-exclusive, worldwide,
|
|
// royalty-free copyright license to reproduce its contribution,
|
|
// prepare derivative works of its contribution, and distribute
|
|
// its contribution or any derivative works that you create.
|
|
// (B) Patent Grant- Subject to the terms of this license,
|
|
// including the license conditions and limitations in section 3,
|
|
// each contributor grants you a non-exclusive, worldwide,
|
|
// royalty-free license under its licensed patents to make, have
|
|
// made, use, sell, offer for sale, import, and/or otherwise
|
|
// dispose of its contribution in the software or derivative works
|
|
// of the contribution in the software.
|
|
//
|
|
// 3. Conditions and Limitations
|
|
// (A) No Trademark License- This license does not grant you
|
|
// rights to use any contributor's name, logo, or trademarks.
|
|
// (B) If you bring a patent claim against any contributor over
|
|
// patents that you claim are infringed by the software, your
|
|
// patent license from such contributor to the software ends
|
|
// automatically.
|
|
// (C) If you distribute any portion of the software, you must
|
|
// retain all copyright, patent, trademark, and attribution
|
|
// notices that are present in the software.
|
|
// (D) If you distribute any portion of the software in source
|
|
// code form, you may do so only under this license by including a
|
|
// complete copy of this license with your distribution. If you
|
|
// distribute any portion of the software in compiled or object
|
|
// code form, you may only do so under a license that complies
|
|
// with this license.
|
|
// (E) The software is licensed "as-is." You bear the risk of
|
|
// using it. The contributors give no express warranties,
|
|
// guarantees or conditions. You may have additional consumer
|
|
// rights under your local laws which this license cannot change.
|
|
// To the extent permitted under your local laws, the contributors
|
|
// exclude the implied warranties of merchantability, fitness for
|
|
// a particular purpose and non-infringement.
|
|
//
|
|
|
|
#ifndef FAR_SUBDIVISION_TABLES_FACTORY_H
|
|
#define FAR_SUBDIVISION_TABLES_FACTORY_H
|
|
|
|
#include "../version.h"
|
|
|
|
#include "../far/meshFactory.h"
|
|
#include "../far/subdivisionTables.h"
|
|
|
|
#include <cassert>
|
|
#include <utility>
|
|
#include <vector>
|
|
|
|
namespace OpenSubdiv {
|
|
namespace OPENSUBDIV_VERSION {
|
|
|
|
template <class T, class U> class FarBilinearSubdivisionTablesFactory;
|
|
template <class T, class U> class FarCatmarkSubdivisionTablesFactory;
|
|
template <class T, class U> class FarLoopSubdivisionTablesFactory;
|
|
|
|
/// \brief A specialized factory for FarSubdivisionTables
|
|
///
|
|
/// This factory is private to Far and should not be used by client code.
|
|
///
|
|
template <class T, class U> class FarSubdivisionTablesFactory {
|
|
|
|
protected:
|
|
friend class FarBilinearSubdivisionTablesFactory<T,U>;
|
|
friend class FarCatmarkSubdivisionTablesFactory<T,U>;
|
|
friend class FarLoopSubdivisionTablesFactory<T,U>;
|
|
|
|
template <class X, class Y> friend class FarMeshFactory;
|
|
|
|
// This factory accumulates vertex topology data that will be shared among the
|
|
// specialized subdivision scheme factories (Bilinear / Catmark / Loop).
|
|
// It also populates the FarMeshFactory vertex remapping vector that ties the
|
|
// Hbr vertex indices to the FarVertexEdit tables.
|
|
FarSubdivisionTablesFactory( HbrMesh<T> const * mesh, int maxlevel, std::vector<int> & remapTable );
|
|
|
|
/// Returns the number of coarse vertices found in the mesh
|
|
int GetNumCoarseVertices() const {
|
|
return (int)(_vertVertsList[0].size());
|
|
}
|
|
|
|
/// Total number of face vertices up to 'level'
|
|
int GetNumFaceVerticesTotal(int level) const {
|
|
return sumList<HbrVertex<T> *>(_faceVertsList, level);
|
|
}
|
|
|
|
/// Total number of edge vertices up to 'level'
|
|
int GetNumEdgeVerticesTotal(int level) const {
|
|
return sumList<HbrVertex<T> *>(_edgeVertsList, level);
|
|
}
|
|
|
|
/// Total number of vertex vertices up to 'level'
|
|
int GetNumVertexVerticesTotal(int level) const {
|
|
return sumList<HbrVertex<T> *>(_vertVertsList, level);
|
|
}
|
|
|
|
/// Valence summation up to 'level'
|
|
int GetFaceVertsValenceSum() const { return _faceVertsValenceSum; }
|
|
|
|
/// Valence summation for face vertices
|
|
int GetVertVertsValenceSum() const { return _vertVertsValenceSum; }
|
|
|
|
// Returns an integer based on the order in which the kernels are applied
|
|
static int GetMaskRanking( unsigned char mask0, unsigned char mask1 );
|
|
|
|
// Per-level counters and offsets for each type of vertex (face,edge,vert)
|
|
std::vector<int> _faceVertIdx,
|
|
_edgeVertIdx,
|
|
_vertVertIdx;
|
|
|
|
// Mumber of indices required for the face-vert and vertex-vert
|
|
// iteration tables at each level
|
|
int _faceVertsValenceSum,
|
|
_vertVertsValenceSum;
|
|
|
|
// lists of vertices sorted by type and level
|
|
std::vector<std::vector< HbrVertex<T> *> > _faceVertsList,
|
|
_edgeVertsList,
|
|
_vertVertsList;
|
|
private:
|
|
|
|
// Returns the subdivision level of a vertex
|
|
static int getVertexDepth(HbrVertex<T> * v);
|
|
|
|
template <class Type> static int sumList( std::vector<std::vector<Type> > const & list, int level );
|
|
|
|
// Sums the number of adjacent vertices required to interpolate a Vert-Vertex
|
|
static int sumVertVertexValence(HbrVertex<T> * vertex);
|
|
|
|
// Compares vertices based on their topological configuration
|
|
// (see subdivisionTables::GetMaskRanking for more details)
|
|
static bool compareVertices( HbrVertex<T> const *x, HbrVertex<T> const *y );
|
|
};
|
|
|
|
template <class T, class U>
|
|
FarSubdivisionTablesFactory<T,U>::FarSubdivisionTablesFactory( HbrMesh<T> const * mesh, int maxlevel, std::vector<int> & remapTable ) :
|
|
_faceVertIdx(maxlevel+1,0),
|
|
_edgeVertIdx(maxlevel+1,0),
|
|
_vertVertIdx(maxlevel+1,0),
|
|
_faceVertsValenceSum(0),
|
|
_vertVertsValenceSum(0),
|
|
_faceVertsList(maxlevel+1),
|
|
_edgeVertsList(maxlevel+1),
|
|
_vertVertsList(maxlevel+1)
|
|
{
|
|
assert( mesh );
|
|
|
|
int numVertices = mesh->GetNumVertices();
|
|
|
|
std::vector<int> faceCounts(maxlevel+1,0),
|
|
edgeCounts(maxlevel+1,0),
|
|
vertCounts(maxlevel+1,0);
|
|
|
|
// First pass (vertices) : count the vertices of each type for each depth
|
|
// up to maxlevel (values are dependent on topology).
|
|
int maxvertid=-1;
|
|
for (int i=0; i<numVertices; ++i) {
|
|
|
|
HbrVertex<T> * v = mesh->GetVertex(i);
|
|
assert(v);
|
|
|
|
int depth = getVertexDepth( v );
|
|
|
|
if (depth>maxlevel)
|
|
continue;
|
|
|
|
if (depth==0 )
|
|
vertCounts[depth]++;
|
|
|
|
if (v->GetID()>maxvertid)
|
|
maxvertid = v->GetID();
|
|
|
|
if (v->GetParentFace()) {
|
|
faceCounts[depth]++;
|
|
_faceVertsValenceSum += v->GetParentFace()->GetNumVertices();
|
|
} else if (v->GetParentEdge())
|
|
edgeCounts[depth]++;
|
|
else if (v->GetParentVertex()) {
|
|
vertCounts[depth]++;
|
|
_vertVertsValenceSum+=sumVertVertexValence(v);
|
|
}
|
|
}
|
|
|
|
// Per-level offset to the first vertex of each type in the global vertex map
|
|
_vertVertsList[0].reserve( vertCounts[0] );
|
|
for (int l=1; l<(maxlevel+1); ++l) {
|
|
_faceVertIdx[l]= _vertVertIdx[l-1]+vertCounts[l-1];
|
|
_edgeVertIdx[l]= _faceVertIdx[l]+faceCounts[l];
|
|
_vertVertIdx[l]= _edgeVertIdx[l]+edgeCounts[l];
|
|
|
|
_faceVertsList[l].reserve( faceCounts[l] );
|
|
_edgeVertsList[l].reserve( edgeCounts[l] );
|
|
_vertVertsList[l].reserve( vertCounts[l] );
|
|
}
|
|
|
|
// reset counters
|
|
faceCounts.assign(maxlevel+1,0);
|
|
edgeCounts.assign(maxlevel+1,0);
|
|
|
|
remapTable.resize( maxvertid+1, -1);
|
|
|
|
// Second pass (vertices) : calculate the starting indices of the sub-tables
|
|
// (face, edge, verts...) and populate the remapping table.
|
|
for (int i=0; i<numVertices; ++i) {
|
|
|
|
HbrVertex<T> * v = mesh->GetVertex(i);
|
|
assert(v);
|
|
|
|
int depth = getVertexDepth( v );
|
|
|
|
if (depth>maxlevel)
|
|
continue;
|
|
|
|
assert( remapTable[ v->GetID() ] == -1 );
|
|
|
|
if (depth==0) {
|
|
_vertVertsList[ depth ].push_back( v );
|
|
remapTable[ v->GetID() ] = v->GetID();
|
|
} else if (v->GetParentFace()) {
|
|
remapTable[ v->GetID() ]=_faceVertIdx[depth]+faceCounts[depth]++;
|
|
_faceVertsList[ depth ].push_back( v );
|
|
} else if (v->GetParentEdge()) {
|
|
remapTable[ v->GetID() ]=_edgeVertIdx[depth]+edgeCounts[depth]++;
|
|
_edgeVertsList[ depth ].push_back( v );
|
|
} else if (v->GetParentVertex()) {
|
|
// vertices need to be sorted separately based on compute kernel :
|
|
// the remapping step is done just after this
|
|
_vertVertsList[ depth ].push_back( v );
|
|
}
|
|
}
|
|
|
|
// Sort the the vertices that are the child of a vertex based on their weight
|
|
// mask. The masks combinations are ordered so as to minimize the compute
|
|
// kernel switching.(see subdivisionTables::GetMaskRanking for more details)
|
|
for (size_t i=1; i<_vertVertsList.size(); ++i)
|
|
std::sort( _vertVertsList[i].begin(), _vertVertsList[i].end(), compareVertices );
|
|
|
|
|
|
// These vertices still need a remapped index
|
|
for (int l=1; l<(maxlevel+1); ++l)
|
|
for (size_t i=0; i<_vertVertsList[l].size(); ++i)
|
|
remapTable[ _vertVertsList[l][i]->GetID() ]=_vertVertIdx[l]+(int)i;
|
|
|
|
|
|
}
|
|
|
|
|
|
template <class T, class U> int
|
|
FarSubdivisionTablesFactory<T,U>::getVertexDepth(HbrVertex<T> * v) {
|
|
|
|
if (v->IsConnected()) {
|
|
return v->GetFace()->GetDepth();
|
|
} else {
|
|
// Un-connected vertices do not have a face pointer, so we have to seek
|
|
// the parent. Note : subdivision tables can only work with face-vertices,
|
|
// so we assert out of the other types.
|
|
HbrFace<T> * parent = v->GetParentFace();
|
|
assert(parent);
|
|
return parent->GetDepth()+1;
|
|
}
|
|
}
|
|
|
|
template <class T, class U>
|
|
template <class Type> int
|
|
FarSubdivisionTablesFactory<T,U>::sumList( std::vector<std::vector<Type> > const & list, int level) {
|
|
|
|
level = std::min(level, (int)list.size()-1);
|
|
int total = 0;
|
|
for (int i=0; i<=level; ++i)
|
|
total += (int)list[i].size();
|
|
return total;
|
|
}
|
|
|
|
// The ranking matrix defines the order of execution for the various combinations
|
|
// of Corner, Crease, Dart and Smooth topological configurations. This matrix is
|
|
// somewhat arbitrary as it is possible to perform some permutations in the
|
|
// ordering without adverse effects, but it does try to minimize kernel switching
|
|
// during the exececution of Apply(). This table is identical for both the Loop
|
|
// and Catmull-Clark schemes.
|
|
//
|
|
// The matrix is derived from this table :
|
|
// Rules +----+----+----+----+----+----+----+----+----+----+
|
|
// Pass 0 | Dt | Sm | Sm | Dt | Sm | Dt | Sm | Cr | Co | Cr |
|
|
// Pass 1 | | | | Co | Co | Cr | Cr | Co | | |
|
|
// Kernel +----+----+----+----+----+----+----+----+----+----+
|
|
// Pass 0 | B | B | B | B | B | B | B | A | A | A |
|
|
// Pass 1 | | | | A | A | A | A | A | | |
|
|
// +----+----+----+----+----+----+----+----+----+----+
|
|
// Rank | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|
|
// +----+----+----+----+----+----+----+----+----+----+
|
|
// with :
|
|
// - A : compute kernel applying k_Crease / k_Corner rules
|
|
// - B : compute kernel applying k_Smooth / k_Dart rules
|
|
template <class T, class U> int
|
|
FarSubdivisionTablesFactory<T,U>::GetMaskRanking( unsigned char mask0, unsigned char mask1 ) {
|
|
static short masks[4][4] = { { 0, 1, 6, 4 },
|
|
{ 0xFF, 2, 5, 3 },
|
|
{ 0xFF, 0xFF, 9, 7 },
|
|
{ 0xFF, 0xFF, 0xFF, 8 } };
|
|
return masks[mask0][mask1];
|
|
}
|
|
|
|
// Sums the number of adjacent vertices required to interpolate a Vert-Vertex
|
|
template <class T, class U> int
|
|
FarSubdivisionTablesFactory<T,U>::sumVertVertexValence(HbrVertex<T> * vertex) {
|
|
int masks[2], npasses=1, result=0;
|
|
|
|
HbrVertex<T> * pv = vertex->GetParentVertex();
|
|
assert(pv);
|
|
|
|
masks[0] = pv->GetMask(false);
|
|
masks[1] = pv->GetMask(true);
|
|
|
|
if (masks[0] != masks[1]and (
|
|
not (masks[0]==HbrVertex<T>::k_Smooth and
|
|
masks[1]==HbrVertex<T>::k_Dart)))
|
|
npasses = 2;
|
|
|
|
int valence = pv->GetValence();
|
|
for (int i=0; i<npasses; ++i)
|
|
switch (masks[i]) {
|
|
case HbrVertex<T>::k_Smooth:
|
|
case HbrVertex<T>::k_Dart: result+=valence; break;
|
|
default: break;
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
// Compare the weight masks of 2 vertices using the following ordering table.
|
|
//
|
|
// Assuming 2 computer kernels :
|
|
// - A handles the k_Crease and K_Corner rules
|
|
// - B handles the K_Smooth and K_Dart rules
|
|
// The vertices should be sorted so as to minimize the number execution calls of
|
|
// these kernels to match the 2 pass interpolation scheme used in Hbr.
|
|
template <class T, class U> bool
|
|
FarSubdivisionTablesFactory<T,U>::compareVertices( HbrVertex<T> const * x, HbrVertex<T> const * y ) {
|
|
|
|
// Masks of the parent vertex decide for the current vertex.
|
|
HbrVertex<T> * px=x->GetParentVertex(),
|
|
* py=y->GetParentVertex();
|
|
|
|
assert( (GetMaskRanking(px->GetMask(false), px->GetMask(true) )!=0xFF) and
|
|
(GetMaskRanking(py->GetMask(false), py->GetMask(true) )!=0xFF) );
|
|
|
|
return GetMaskRanking(px->GetMask(false), px->GetMask(true) ) <
|
|
GetMaskRanking(py->GetMask(false), py->GetMask(true) );
|
|
}
|
|
|
|
|
|
} // end namespace OPENSUBDIV_VERSION
|
|
using namespace OPENSUBDIV_VERSION;
|
|
|
|
} // end namespace OpenSubdiv
|
|
|
|
#endif /* FAR_SUBDIVISION_TABLES_H */
|