mirror of
https://github.com/PixarAnimationStudios/OpenSubdiv
synced 2024-12-04 08:50:06 +00:00
3ae50d1c50
New text:
Copyright 2013 Pixar
Licensed under the Apache License, Version 2.0 (the "Apache License")
with the following modification; you may not use this file except in
compliance with the Apache License and the following modification to it:
Section 6. Trademarks. is deleted and replaced with:
6. Trademarks. This License does not grant permission to use the trade
names, trademarks, service marks, or product names of the Licensor
and its affiliates, except as required to comply with Section 4(c) of
the License and to reproduce the content of the NOTICE file.
You may obtain a copy of the Apache License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the Apache License with the above modification is
distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
KIND, either express or implied. See the Apache License for the specific
language governing permissions and limitations under the Apache License.
261 lines
10 KiB
C++
261 lines
10 KiB
C++
//
|
|
// Copyright 2013 Pixar
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "Apache License")
|
|
// with the following modification; you may not use this file except in
|
|
// compliance with the Apache License and the following modification to it:
|
|
// Section 6. Trademarks. is deleted and replaced with:
|
|
//
|
|
// 6. Trademarks. This License does not grant permission to use the trade
|
|
// names, trademarks, service marks, or product names of the Licensor
|
|
// and its affiliates, except as required to comply with Section 4(c) of
|
|
// the License and to reproduce the content of the NOTICE file.
|
|
//
|
|
// You may obtain a copy of the Apache License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the Apache License with the above modification is
|
|
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
|
|
// KIND, either express or implied. See the Apache License for the specific
|
|
// language governing permissions and limitations under the Apache License.
|
|
//
|
|
|
|
#include "hbrUtil.h"
|
|
|
|
#include <hbr/mesh.h>
|
|
#include <hbr/bilinear.h>
|
|
#include <hbr/loop.h>
|
|
#include <hbr/catmark.h>
|
|
|
|
#include <vector>
|
|
|
|
#define OSD_ERROR printf // XXXX
|
|
|
|
OsdHbrMesh *
|
|
ConvertToHBR( int nVertices,
|
|
std::vector<int> const & faceVertCounts,
|
|
std::vector<int> const & faceIndices,
|
|
std::vector<int> const & vtxCreaseIndices,
|
|
std::vector<double> const & vtxCreases,
|
|
std::vector<int> const & edgeCrease1Indices, // face index, local edge index
|
|
std::vector<float> const & edgeCreases1,
|
|
std::vector<int> const & edgeCrease2Indices, // 2 vertex indices (Maya friendly)
|
|
std::vector<double> const & edgeCreases2,
|
|
OsdHbrMesh::InterpolateBoundaryMethod interpBoundary,
|
|
HbrMeshUtil::SchemeType scheme,
|
|
bool usingPtex,
|
|
FVarDataDesc const * fvarDesc,
|
|
std::vector<float> const * fvarData
|
|
)
|
|
{
|
|
|
|
static OpenSubdiv::HbrBilinearSubdivision<OpenSubdiv::OsdVertex> _bilinear;
|
|
static OpenSubdiv::HbrLoopSubdivision<OpenSubdiv::OsdVertex> _loop;
|
|
static OpenSubdiv::HbrCatmarkSubdivision<OpenSubdiv::OsdVertex> _catmark;
|
|
|
|
// Build HBR mesh with/without face varying data, according to input data.
|
|
// If a face-varying descriptor is passed in its memory needs to stay
|
|
// alive as long as this hbrMesh is alive (for indices and widths arrays).
|
|
OsdHbrMesh *hbrMesh;
|
|
if ( fvarDesc )
|
|
{
|
|
if (scheme == HbrMeshUtil::kCatmark)
|
|
hbrMesh = new OsdHbrMesh(&_catmark, fvarDesc->getCount(),
|
|
fvarDesc->getIndices(),
|
|
fvarDesc->getWidths(),
|
|
fvarDesc->getTotalWidth());
|
|
else if (scheme == HbrMeshUtil::kLoop)
|
|
hbrMesh = new OsdHbrMesh(&_loop, fvarDesc->getCount(),
|
|
fvarDesc->getIndices(),
|
|
fvarDesc->getWidths(),
|
|
fvarDesc->getTotalWidth());
|
|
else
|
|
hbrMesh = new OsdHbrMesh(&_bilinear, fvarDesc->getCount(),
|
|
fvarDesc->getIndices(),
|
|
fvarDesc->getWidths(),
|
|
fvarDesc->getTotalWidth());
|
|
}
|
|
else
|
|
{
|
|
if (scheme == HbrMeshUtil::kCatmark)
|
|
hbrMesh = new OsdHbrMesh(&_catmark);
|
|
else if (scheme == HbrMeshUtil::kLoop)
|
|
hbrMesh = new OsdHbrMesh(&_loop);
|
|
else
|
|
hbrMesh = new OsdHbrMesh(&_bilinear);
|
|
}
|
|
|
|
|
|
// create empty verts: actual vertices initialized in UpdatePoints();
|
|
OpenSubdiv::OsdVertex v;
|
|
for (int i = 0; i < nVertices; ++i) {
|
|
hbrMesh->NewVertex(i, v);
|
|
}
|
|
|
|
std::vector<int> vIndex;
|
|
int nFaces = (int)faceVertCounts.size();
|
|
int fvcOffset = 0; // face-vertex count offset
|
|
int ptxIdx = 0;
|
|
|
|
for (int fi = 0; fi < nFaces; ++fi)
|
|
{
|
|
int nFaceVerts = faceVertCounts[fi];
|
|
vIndex.resize(nFaceVerts);
|
|
|
|
bool valid = true;
|
|
for (int fvi = 0; fvi < nFaceVerts; ++fvi)
|
|
{
|
|
vIndex[fvi] = faceIndices[fvi + fvcOffset];
|
|
int vNextIndex = faceIndices[(fvi+1) % nFaceVerts + fvcOffset];
|
|
|
|
// check for non-manifold face
|
|
OsdHbrVertex * origin = hbrMesh->GetVertex(vIndex[fvi]);
|
|
OsdHbrVertex * destination = hbrMesh->GetVertex(vNextIndex);
|
|
if (!origin || !destination) {
|
|
OSD_ERROR("ERROR : An edge was specified that connected a nonexistent vertex");
|
|
valid = false;
|
|
}
|
|
|
|
if (origin == destination) {
|
|
OSD_ERROR("ERROR : An edge was specified that connected a vertex to itself");
|
|
valid = false;
|
|
}
|
|
|
|
OsdHbrHalfedge * opposite = destination->GetEdge(origin);
|
|
if (opposite && opposite->GetOpposite()) {
|
|
OSD_ERROR("ERROR : A non-manifold edge incident to more than 2 faces was found");
|
|
valid = false;
|
|
}
|
|
|
|
if (origin->GetEdge(destination)) {
|
|
OSD_ERROR("ERROR : An edge connecting two vertices was specified more than once. "
|
|
"It's likely that an incident face was flipped");
|
|
valid = false;
|
|
}
|
|
}
|
|
|
|
if ( valid )
|
|
{
|
|
if (scheme == HbrMeshUtil::kLoop) {
|
|
// For Loop subdivision, triangulate from vertex indices
|
|
int triangle[3];
|
|
triangle[0] = vIndex[0];
|
|
for (int fvi = 2; fvi < nFaceVerts; ++fvi) {
|
|
triangle[1] = vIndex[fvi-1];
|
|
triangle[2] = vIndex[fvi];
|
|
hbrMesh->NewFace(3, triangle, 0);
|
|
}
|
|
/* ptex not fully implemented for loop, yet */
|
|
/* fvar not fully implemented for loop, yet */
|
|
|
|
} else {
|
|
|
|
// For Catmull-Clark subdivision, create a quad face from vertices
|
|
/* bilinear subdivision not fully implemented */
|
|
OsdHbrFace *face = hbrMesh->NewFace(nFaceVerts, &(vIndex[0]), 0);
|
|
|
|
if (usingPtex) {
|
|
// ptex textures will be used, set up ptex coordinates
|
|
face->SetPtexIndex(ptxIdx);
|
|
ptxIdx += (nFaceVerts == 4) ? 1 : nFaceVerts;
|
|
}
|
|
|
|
if (fvarData) {
|
|
// Face-varying data has been passed in, get pointer to data
|
|
int fvarWidth = hbrMesh->GetTotalFVarWidth();
|
|
const float *faceData = &(*fvarData)[ fvcOffset*fvarWidth ];
|
|
|
|
// For each face vertex copy fvar data into hbr mesh
|
|
for(int fvi=0; fvi<nFaceVerts; ++fvi)
|
|
{
|
|
OsdHbrVertex *v = hbrMesh->GetVertex( vIndex[fvi] );
|
|
OsdHbrFVarData& fvarData = v->GetFVarData(face);
|
|
if ( ! fvarData.IsInitialized() )
|
|
{
|
|
fvarData.SetAllData( fvarWidth, faceData );
|
|
}
|
|
else if (!fvarData.CompareAll(fvarWidth, faceData))
|
|
{
|
|
// If data exists for this face vertex, but is different
|
|
// (e.g. we're on a UV seam) create another fvar datum
|
|
OsdHbrFVarData& fvarData = v->NewFVarData(face);
|
|
fvarData.SetAllData( fvarWidth, faceData );
|
|
}
|
|
|
|
// Advance pointer to next set of face-varying data
|
|
faceData += fvarWidth;
|
|
}
|
|
}
|
|
}
|
|
} else {
|
|
OSD_ERROR("Face %d will be ignored\n", fi);
|
|
}
|
|
|
|
fvcOffset += nFaceVerts;
|
|
}
|
|
|
|
// Assign boundary interpolation methods
|
|
hbrMesh->SetInterpolateBoundaryMethod(interpBoundary);
|
|
if ( fvarDesc )
|
|
hbrMesh->SetFVarInterpolateBoundaryMethod(fvarDesc->getInterpBoundary());
|
|
|
|
// Set edge crease in two different indexing way
|
|
size_t nEdgeCreases = edgeCreases1.size();
|
|
for (size_t i = 0; i < nEdgeCreases; ++i) {
|
|
if (edgeCreases1[i] <= 0.0)
|
|
continue;
|
|
|
|
OsdHbrHalfedge * e = hbrMesh->
|
|
GetFace(edgeCrease1Indices[i*2])->
|
|
GetEdge(edgeCrease1Indices[i*2+1]);
|
|
|
|
if (!e) {
|
|
OSD_ERROR("Can't find edge (face %d edge %d)\n",
|
|
edgeCrease1Indices[i*2], edgeCrease1Indices[i*2+1]);
|
|
continue;
|
|
}
|
|
e->SetSharpness(static_cast<float>(edgeCreases1[i]));
|
|
}
|
|
nEdgeCreases = edgeCreases2.size();
|
|
for (size_t i = 0; i < nEdgeCreases; ++i) {
|
|
if (edgeCreases2[i] <= 0.0)
|
|
continue;
|
|
|
|
OsdHbrVertex * v0 = hbrMesh->GetVertex(edgeCrease2Indices[i*2]);
|
|
OsdHbrVertex * v1 = hbrMesh->GetVertex(edgeCrease2Indices[i*2+1]);
|
|
OsdHbrHalfedge * e = NULL;
|
|
|
|
if (v0 && v1)
|
|
if (!(e = v0->GetEdge(v1)))
|
|
e = v1->GetEdge(v0);
|
|
if (!e) {
|
|
OSD_ERROR("ERROR can't find edge");
|
|
continue;
|
|
}
|
|
e->SetSharpness(static_cast<float>(edgeCreases2[i]));
|
|
}
|
|
|
|
// Set corner
|
|
{
|
|
size_t nVertexCreases = vtxCreases.size();
|
|
for (size_t i = 0; i < nVertexCreases; ++i) {
|
|
if (vtxCreases[i] <= 0.0)
|
|
continue;
|
|
OsdHbrVertex * v = hbrMesh->GetVertex(vtxCreaseIndices[i]);
|
|
if (!v) {
|
|
OSD_ERROR("Can't find vertex %d\n", vtxCreaseIndices[i]);
|
|
continue;
|
|
}
|
|
v->SetSharpness(static_cast<float>(vtxCreases[i]));
|
|
}
|
|
}
|
|
|
|
// Call finish to complete build of HBR mesh
|
|
hbrMesh->Finish();
|
|
|
|
return hbrMesh;
|
|
}
|
|
|