//------------------------------------------------------------------------------
// generate display vert IDs for the selected Far patch
static void
createPatchNumbers(OpenSubdiv::Far::PatchTable const & patchTable,
std::vector<Vertex> const & vertexBuffer) {
if (not g_currentPatch)
return;
int patchID = g_currentPatch-1,
patchArray = -1;
// Find PatchArray containing our patch
for (int array=0; array<(int)patchTable.GetNumPatchArrays(); ++array) {
int npatches = patchTable.GetNumPatches(array);
if (patchID >= npatches) {
patchID -= npatches;
} else {
patchArray = array;
break;
}
}
if (patchArray==-1) {
return;
}
g_currentPatchDesc = patchTable.GetPatchArrayDescriptor(patchArray);
OpenSubdiv::Far::ConstIndexArray const cvs =
patchTable.GetPatchVertices(patchArray, patchID);
static char buf[16];
for (int i=0; i<cvs.size(); ++i) {
snprintf(buf, 16, "%d", i);
g_font->Print3D(vertexBuffer[cvs[i]].GetPos(), buf, 1);
}
}
//------------------------------------------------------------------------------
// generate display IDs for Far edges
static void
createEdgeNumbers(OpenSubdiv::Far::TopologyRefiner const & refiner,
std::vector<Vertex> const & vertexBuffer, bool ids=false, bool sharpness=false) {
if (ids or sharpness) {
int maxlevel = refiner.GetMaxLevel(),
firstvert = 0;
for (int i=0; i<maxlevel; ++i) {
firstvert += refiner.GetLevel(i).GetNumVertices();
}
OpenSubdiv::Far::TopologyLevel const & refLastLevel = refiner.GetLevel(maxlevel);
static char buf[16];
for (int i=0; i<refLastLevel.GetNumEdges(); ++i) {
Vertex center(0.0f, 0.0f, 0.0f);
OpenSubdiv::Far::ConstIndexArray const verts = refLastLevel.GetEdgeVertices(i);
assert(verts.size()==2);
center.AddWithWeight(vertexBuffer[firstvert+verts[0]], 0.5f);
center.AddWithWeight(vertexBuffer[firstvert+verts[1]], 0.5f);
if (ids) {
snprintf(buf, 16, "%d", i);
g_font->Print3D(center.GetPos(), buf, 3);
}
if (sharpness) {
float sharpness = refLastLevel.GetEdgeSharpness(i);
if (sharpness>0.0f) {
snprintf(buf, 16, "%g", sharpness);
g_font->Print3D(center.GetPos(), buf, std::min(8,(int)sharpness+4));
}
}
}
}
}
//------------------------------------------------------------------------------
// generate display IDs for Far faces
static void
createFaceNumbers(OpenSubdiv::Far::TopologyRefiner const & refiner,
std::vector<Vertex> const & vertexBuffer) {
static char buf[16];
if (refiner.IsUniform()) {
int maxlevel = refiner.GetMaxLevel(),
firstvert = 0;
for (int i=0; i<maxlevel; ++i) {
firstvert += refiner.GetLevel(i).GetNumVertices();
}
OpenSubdiv::Far::TopologyLevel const & refLastLevel = refiner.GetLevel(maxlevel);
for (int face=0; face<refLastLevel.GetNumFaces(); ++face) {
Vertex center(0.0f, 0.0f, 0.0f);
OpenSubdiv::Far::ConstIndexArray const verts = refLastLevel.GetFaceVertices(face);
float weight = 1.0f / (float)verts.size();
for (int vert=0; vert<verts.size(); ++vert) {
center.AddWithWeight(vertexBuffer[firstvert+verts[vert]], weight);
}
snprintf(buf, 16, "%d", face);
g_font->Print3D(center.GetPos(), buf, 2);
}
} else {
int maxlevel = refiner.GetMaxLevel(),
// patch = refiner.GetLevel(0).GetNumFaces(),
firstvert = refiner.GetLevel(0).GetNumVertices();
for (int level=1; level<=maxlevel; ++level) {
OpenSubdiv::Far::TopologyLevel const & refLevel = refiner.GetLevel(level);
int nfaces = refLevel.GetNumFaces();
for (int face=0; face<nfaces; ++face /*, ++patch */) {
Vertex center(0.0f, 0.0f, 0.0f);
OpenSubdiv::Far::ConstIndexArray const verts = refLevel.GetFaceVertices(face);
float weight = 1.0f / (float)verts.size();
for (int vert=0; vert<verts.size(); ++vert) {
center.AddWithWeight(vertexBuffer[firstvert+verts[vert]], weight);
}
snprintf(buf, 16, "%d", face);
g_font->Print3D(center.GetPos(), buf, 2);
}
firstvert+=refLevel.GetNumVertices();
}
}
}
//------------------------------------------------------------------------------
// generate display vert IDs for the selected Far FVar patch
static void
createFVarPatchNumbers(OpenSubdiv::Far::PatchTable const & patchTable,
std::vector<Vertex> const & fvarBuffer) {
static int channel = 0;
int patch = g_currentPatch-1;
static char buf[16];
if (patch>=0 and patch<patchTable.GetNumPatchesTotal()) {
OpenSubdiv::Far::PatchTable::PatchHandle handle;
handle.patchIndex = patch;
OpenSubdiv::Far::ConstIndexArray const cvs =
patchTable.GetPatchFVarValues(handle, channel);
for (int i=0; i<cvs.size(); ++i) {
snprintf(buf, 16, "%d", i);
g_font->Print3D(fvarBuffer[cvs[i]].GetPos(), buf, 2);
}
}
}
bool
PxOsdUniformEvaluator::Initialize(
PxOsdTopologyRefinerSharedPtr refiner,
const PxOsdMeshTopology &topology,
int level,
string *errorMessage)
{
TRACE_FUNCTION();
_topology = topology;
refiner->RefineUniform(level);
Far::StencilTableFactory::Options options;
options.generateOffsets = true;
options.generateIntermediateLevels = false;
_vertexStencils =
Far::StencilTableFactory::Create(*refiner, options);
Far::PatchTable const *patchTable =
Far::PatchTableFactory::Create(*refiner);
if (not (TF_VERIFY(_vertexStencils) and TF_VERIFY(patchTable))) {
return false;
}
// populate refined quad indices, note that four indices are packed
// for each quad.
int numRefinedQuadIndices = refiner->GetLevel(level).GetNumFaceVertices();
_refinedQuadIndices.resize(numRefinedQuadIndices);
for (int i=0; i<numRefinedQuadIndices/4; ++i) {
OpenSubdiv::Far::ConstIndexArray faceVertices =
refiner->GetLevel(level).GetFaceVertices(i);
int baseIndex = i*4;
if (faceVertices.size() != 4) {
TF_WARN("Non-quad found after subdivision, bailing");
delete patchTable;
return false;
}
for (int j=0; j<4; ++j) {
_refinedQuadIndices[baseIndex+j] = faceVertices[j];
}
}
int numRefinedQuads = _refinedQuadIndices.size()/4;
_subfaceUvs.resize(_refinedQuadIndices.size());
vector<float>::iterator uvIt = _subfaceUvs.begin();
_ptexIndices.resize(numRefinedQuads);
vector<int>::iterator idIt = _ptexIndices.begin();
const Far::PatchParamTable &patchParamTable =
patchTable->GetPatchParamTable();
for (int refinedIndex = 0; refinedIndex < numRefinedQuads; ++refinedIndex) {
const Far::PatchParam& param =
patchParamTable[refinedIndex];
float u0 = 0;
float v0 = 0;
_InverseNormalize(param, u0, v0);
float u1 = 1;
float v1 = 1;
_InverseNormalize(param, u1, v1);
*idIt++ = param.GetFaceId();
*uvIt++ = u0;
*uvIt++ = v0;
*uvIt++ = u1;
*uvIt++ = v1;
}
delete patchTable;
return true;
}