void
InterpolateFVarData(OpenSubdiv::Far::TopologyRefiner & refiner,
Shape const & shape, std::vector<float> & fvarData) {
int channel = 0, // shapes only have 1 UV channel
fvarWidth = 2;
int maxlevel = refiner.GetMaxLevel(),
numValuesM = refiner.GetLevel(maxlevel).GetNumFVarValues(channel),
numValuesTotal = refiner.GetNumFVarValuesTotal(channel);
if (shape.uvs.empty() || numValuesTotal<=0) {
return;
}
OpenSubdiv::Far::PrimvarRefiner primvarRefiner(refiner);
if (refiner.IsUniform()) {
// For uniform we only keep the highest level of refinement:
fvarData.resize(numValuesM * fvarWidth);
std::vector<FVarVertex> buffer(numValuesTotal - numValuesM);
FVarVertex * src = &buffer[0];
memcpy(src, &shape.uvs[0], shape.uvs.size()*sizeof(float));
// Defer the last level to treat separately with its alternate destination:
for (int level = 1; level < maxlevel; ++level) {
FVarVertex * dst = src + refiner.GetLevel(level-1).GetNumFVarValues(channel);
primvarRefiner.InterpolateFaceVarying(level, src, dst, channel);
src = dst;
}
FVarVertex * dst = reinterpret_cast<FVarVertex *>(&fvarData[0]);
primvarRefiner.InterpolateFaceVarying(maxlevel, src, dst, channel);
} else {
// For adaptive we keep all levels:
fvarData.resize(numValuesTotal * fvarWidth);
FVarVertex * src = reinterpret_cast<FVarVertex *>(&fvarData[0]);
memcpy(src, &shape.uvs[0], shape.uvs.size()*sizeof(float));
for (int level = 1; level <= maxlevel; ++level) {
FVarVertex * dst = src + refiner.GetLevel(level-1).GetNumFVarValues(channel);
primvarRefiner.InterpolateFaceVarying(level, src, dst, channel);
src = dst;
}
}
}
MStatus
MayaPolySmooth::compute( const MPlug& plug, MDataBlock& data ) {
MStatus status;
// Check which output attribute we have been asked to compute. If this
// node doesn't know how to compute it, we must return
// MS::kUnknownParameter.
//
if( plug == a_output ) {
bool createdSubdMesh = false;
int subdivisionLevel = data.inputValue(a_subdivisionLevels).asInt();
short stateH = data.inputValue(state).asShort();
if ((subdivisionLevel > 0) and (stateH !=1)) {
// == Retrieve input mesh ====================================
// Get attr values
MObject inMeshObj = data.inputValue(a_inputPolymesh).asMesh();
short vertBoundaryMethod = data.inputValue(a_vertBoundaryMethod).asShort();
short fvarBoundaryMethod = data.inputValue(a_fvarBoundaryMethod).asShort();
bool fvarPropCorners = data.inputValue(a_fvarPropagateCorners).asBool();
bool smoothTriangles = data.inputValue(a_smoothTriangles).asBool();
short creaseMethodVal = data.inputValue(a_creaseMethod).asShort();
// == Get Mesh Functions and Iterators ==========================
MFnMeshData inMeshDat(inMeshObj);
MFnMesh inMeshFn(inMeshObj, &status);
MCHECKERR(status, "ERROR getting inMeshFn\n");
MItMeshPolygon inMeshItPolygon(inMeshObj, &status);
MCHECKERR(status, "ERROR getting inMeshItPolygon\n");
// Convert attr values to OSD enums
OpenSubdiv::Sdc::SchemeType type = OpenSubdiv::Sdc::SCHEME_CATMARK;
// == Create Far topology ==========================
OpenSubdiv::Sdc::Options options;
options.SetVtxBoundaryInterpolation(ConvertMayaVtxBoundary(vertBoundaryMethod));
options.SetFVarLinearInterpolation(ConvertMayaFVarBoundary(fvarBoundaryMethod, fvarPropCorners));
options.SetCreasingMethod(creaseMethodVal ?
OpenSubdiv::Sdc::Options::CREASE_CHAIKIN : OpenSubdiv::Sdc::Options::CREASE_UNIFORM);
options.SetTriangleSubdivision(smoothTriangles ?
OpenSubdiv::Sdc::Options::TRI_SUB_SMOOTH : OpenSubdiv::Sdc::Options::TRI_SUB_CATMARK);
// Storage for face-varying values (UV sets, vertex colors...)
std::vector<MFloatArray> uvSet_uCoords;
std::vector<MFloatArray> uvSet_vCoords;
std::vector<MColorArray> colorSet_colors;
bool hasUVs = false, hasColors = false;
float maxCreaseSharpness=0.0f;
OpenSubdiv::Far::TopologyRefiner * refiner = gatherTopology(
inMeshFn, inMeshItPolygon, type, options, &hasUVs, &hasColors,
uvSet_uCoords, uvSet_vCoords, colorSet_colors, &maxCreaseSharpness);
assert(refiner);
// == Refine & Interpolate ==========================
refiner->RefineUniform(OpenSubdiv::Far::TopologyRefiner::UniformOptions(subdivisionLevel));
// Prepare vertex information
Vertex const * initialVerts =
reinterpret_cast<Vertex const *>(inMeshFn.getRawPoints(&status));
std::vector<Vertex> refinedVerts(
refiner->GetNumVerticesTotal() - refiner->GetLevel(0).GetNumVertices());
Vertex const * srcVerts = &initialVerts[0];
Vertex * dstVerts = &refinedVerts[0];
// Verify the refiner has the correct number of values
// needed to interpolate the different channels
int numInitialUVs = refiner->GetLevel(0).GetNumFVarValues(CHANNELUV);
int numInitialColors = refiner->GetLevel(0).GetNumFVarValues(CHANNELCOLOR);
if (hasUVs && numInitialUVs <= 0) {
hasUVs = false;
MGlobal::displayError("Model with incorrect data, the UV channel will not be interpolated.");
}
if (hasColors && numInitialColors <= 0) {
hasColors = false;
MGlobal::displayError("Model with incorrect data, the color channel will not be interpolated.");
}
// Prepare UV information if needed
std::vector<FVarVertexUV> initialUVs, refinedUVs;
FVarVertexUV const * srcUV = NULL;
FVarVertexUV * dstUV = NULL;
if(hasUVs) {
initialUVs.resize(numInitialUVs);
refinedUVs.resize(refiner->GetNumFVarValuesTotal(CHANNELUV));
for (int i=0; i<numInitialUVs; ++i) {
initialUVs[i].u = uvSet_uCoords[0][i];
initialUVs[i].v = uvSet_vCoords[0][i];
}
srcUV = &initialUVs[0];
dstUV = &refinedUVs[0];
}
// Prepare color information if needed
std::vector<FVarVertexColor> initialColors, refinedColors;
FVarVertexColor const * srcColor = NULL;
FVarVertexColor * dstColor = NULL;
if(hasColors) {
initialColors.resize(numInitialColors);
refinedColors.resize(refiner->GetNumFVarValuesTotal(CHANNELCOLOR));
for (int i=0; i<numInitialColors; ++i) {
initialColors[i].r = colorSet_colors[0][i].r;
initialColors[i].g = colorSet_colors[0][i].g;
initialColors[i].b = colorSet_colors[0][i].b;
initialColors[i].a = colorSet_colors[0][i].a;
}
srcColor = &initialColors[0];
dstColor = &refinedColors[0];
}
// Interpolate the vertices and the different channels
OpenSubdiv::Far::PrimvarRefiner primvarRefiner(*refiner);
for (int level = 1; level <= subdivisionLevel; ++level) {
// Interpolate vertices
primvarRefiner.Interpolate(level, srcVerts, dstVerts);
srcVerts = dstVerts;
dstVerts += refiner->GetLevel(level).GetNumVertices();
// Interpolate the uv set
if(hasUVs) {
primvarRefiner.InterpolateFaceVarying(level, srcUV, dstUV, CHANNELUV);
srcUV = dstUV;
dstUV += refiner->GetLevel(level).GetNumFVarValues(CHANNELUV);
}
// Interpolate any color set
if(hasColors) {
primvarRefiner.InterpolateFaceVarying(level, srcColor, dstColor, CHANNELCOLOR);
srcColor = dstColor;
dstColor += refiner->GetLevel(level).GetNumFVarValues(CHANNELCOLOR);
}
}
// == Convert subdivided OpenSubdiv mesh to MFnMesh Data outputMesh =============
// Create New Mesh Data Object
MFnMeshData newMeshData;
MObject newMeshDataObj = newMeshData.create(&status);
MCHECKERR(status, "ERROR creating outputData");
// Create out mesh
status = convertToMayaMeshData(*refiner, refinedVerts, hasUVs,
refinedUVs, hasColors, refinedColors, inMeshFn, newMeshDataObj);
MCHECKERR(status, "ERROR convertOsdFarToMayaMesh");
// Propagate objectGroups from inMesh to outMesh (for per-facet shading, etc)
status = createSmoothMesh_objectGroups(inMeshFn, inMeshDat,
newMeshData, subdivisionLevel, refiner->GetLevel(subdivisionLevel).GetNumFaces());
// Write to output plug
MDataHandle outMeshH = data.outputValue(a_output, &status);
MCHECKERR(status, "ERROR getting polygon data handle\n");
outMeshH.set(newMeshDataObj);
int isolation = std::min(10,(int)ceil(maxCreaseSharpness)+1);
data.outputValue(a_recommendedIsolation).set(isolation);
// == Cleanup OSD ============================================
// REVISIT: Re-add these deletes
delete refiner;
// note that the subd mesh was created (see the section below if !createdSubdMesh)
createdSubdMesh = true;
}
// Pass-through inMesh to outMesh if not created the subd mesh
if (!createdSubdMesh) {
MDataHandle outMeshH = data.outputValue(a_output, &status);
status = outMeshH.copy(data.outputValue(a_inputPolymesh, &status));
MCHECKERR(status, "ERROR getting polygon data handle\n");
}
// Clean up Maya Plugs
data.setClean(plug);
} else {
// Unhandled parameter in this compute function, so return MS::kUnknownParameter
// so it is handled in a parent compute() function.
return MS::kUnknownParameter;
}
return MS::kSuccess;
}
//
// StencilTable factory
//
StencilTable const *
StencilTableFactory::Create(TopologyRefiner const & refiner,
Options options) {
int maxlevel = std::min(int(options.maxLevel), refiner.GetMaxLevel());
if (maxlevel==0 && (! options.generateControlVerts)) {
StencilTable * result = new StencilTable;
result->_numControlVertices = refiner.GetLevel(0).GetNumVertices();
return result;
}
bool interpolateVarying = options.interpolationMode==INTERPOLATE_VARYING;
internal::StencilBuilder builder(refiner.GetLevel(0).GetNumVertices(),
/*genControlVerts*/ true,
/*compactWeights*/ true);
//
// Interpolate stencils for each refinement level using
// PrimvarRefiner::InterpolateLevel<>() for vertex or varying
//
PrimvarRefiner primvarRefiner(refiner);
internal::StencilBuilder::Index srcIndex(&builder, 0);
internal::StencilBuilder::Index dstIndex(&builder,
refiner.GetLevel(0).GetNumVertices());
for (int level=1; level<=maxlevel; ++level) {
if (! interpolateVarying) {
primvarRefiner.Interpolate(level, srcIndex, dstIndex);
} else {
primvarRefiner.InterpolateVarying(level, srcIndex, dstIndex);
}
if (options.factorizeIntermediateLevels) {
srcIndex = dstIndex;
}
dstIndex = dstIndex[refiner.GetLevel(level).GetNumVertices()];
if (! options.factorizeIntermediateLevels) {
// All previous verts are considered as coarse verts, as a
// result, we don't update the srcIndex and update the coarse
// vertex count.
builder.SetCoarseVertCount(dstIndex.GetOffset());
}
}
size_t firstOffset = refiner.GetLevel(0).GetNumVertices();
if (! options.generateIntermediateLevels)
firstOffset = srcIndex.GetOffset();
// Copy stencils from the StencilBuilder into the StencilTable.
// Always initialize numControlVertices (useful for torus case)
StencilTable * result =
new StencilTable(refiner.GetLevel(0).GetNumVertices(),
builder.GetStencilOffsets(),
builder.GetStencilSizes(),
builder.GetStencilSources(),
builder.GetStencilWeights(),
options.generateControlVerts,
firstOffset);
return result;
}
