MStatus initializePlugin( MObject obj ) {
MStatus status = MS::kSuccess;
MFnPlugin plugin( obj, "MayaPolySmooth", "1.0", "Any");
status = plugin.registerNode(
MayaPolySmooth::typeNameStr,
MayaPolySmooth::id,
MayaPolySmooth::creator,
MayaPolySmooth::initialize);
MCHECKERR(status, "registerNode");
// Source UI scripts
MString path = plugin.loadPath()+"/mayaPolySmooth.mel";
if (not MGlobal::sourceFile(path)) {
path = "mayaPolySmooth.mel";
if (not MGlobal::sourceFile(path)) {
MGlobal::displayWarning("Failed to source mayaPolySmooth.mel.");
}
}
// RegisterUI
status = plugin.registerUI("mayaPolySmooth_addUI()", "mayaPolySmooth_removeUI()");
MCHECKERR(status, "registerUI");
return status;
}
MStatus uninitializePlugin( MObject obj) {
MStatus returnStatus = MS::kSuccess;
MFnPlugin plugin( obj );
returnStatus = plugin.deregisterNode( MayaPolySmooth::id );
MCHECKERR(returnStatus, "deregisterNode");
return returnStatus;
}
// Propagate objectGroups from inMesh to subdivided outMesh
// Note: Currently only supporting facet groups (for per-facet shading)
MStatus
createSmoothMesh_objectGroups(const MFnMeshData &inMeshDat,
int subdivisionLevel, MFnMeshData &newMeshDat) {
MStatus returnStatus;
int facesPerBaseFace = (int)(pow(4.0f, subdivisionLevel));
MIntArray newCompElems;
for(unsigned int gi=0; gi < inMeshDat.objectGroupCount(); gi++) {
unsigned int compId = inMeshDat.objectGroup(gi, &returnStatus);
MCHECKERR(returnStatus, "cannot get objectGroup() comp ID.");
MFn::Type compType = inMeshDat.objectGroupType(compId, &returnStatus);
MCHECKERR(returnStatus, "cannot get objectGroupType().");
// get elements from inMesh objectGroupComponent
MIntArray compElems;
MFnSingleIndexedComponent compFn(inMeshDat.objectGroupComponent(compId), &returnStatus );
MCHECKERR(returnStatus, "cannot get MFnSingleIndexedComponent for inMeshDat.objectGroupComponent().");
compFn.getElements(compElems);
// Only supporting kMeshPolygonComponent ObjectGroups at this time
// Skip the other types
if (compType == MFn::kMeshPolygonComponent) {
// convert/populate newCompElems from compElems of inMesh
// (with new face indices) to outMesh
newCompElems.setLength( compElems.length() * facesPerBaseFace );
for (unsigned int i=0; i < compElems.length(); i++) {
int startElemIndex = i * facesPerBaseFace;
int startElemValue = compElems[i] * facesPerBaseFace;
for (int j=0; j < facesPerBaseFace; j++) {
newCompElems[startElemIndex+j] = startElemValue+j;
}
}
// create comp
createComp(newMeshDat, compType, compId, newCompElems);
}
}
return MS::kSuccess;
}
// Collect UVs and ColorSet info to represent them as face-varying in OpenSubdiv
static MStatus
getMayaFvarFieldParams(
MFnMesh const & inMeshFn,
MStringArray & uvSetNames,
MStringArray & colorSetNames,
std::vector<int> & colorSetChannels,
std::vector<MFnMesh::MColorRepresentation> &colorSetReps,
int & totalColorSetChannels) {
MStatus returnStatus;
returnStatus = inMeshFn.getUVSetNames(uvSetNames);
MCHECKERR(returnStatus, "Cannot get uvSet names");
returnStatus = inMeshFn.getColorSetNames(colorSetNames);
MCHECKERR(returnStatus, "Cannot get colorSet names");
colorSetChannels.resize(colorSetNames.length());
colorSetReps.resize(colorSetNames.length());
totalColorSetChannels = 0;
for (unsigned int i=0; i < colorSetNames.length(); i++) {
colorSetReps[i] = inMeshFn.getColorRepresentation(colorSetNames[i], &returnStatus);
MCHECKERR(returnStatus, "Cannot get colorSet representation");
if (colorSetReps[i] == MFnMesh::kAlpha) {
colorSetChannels[i] = 1;
} else if (colorSetReps[i] == MFnMesh::kRGB) {
colorSetChannels[i] = 3;
} else {
colorSetChannels[i] = 4; // kRGBA
}
totalColorSetChannels += colorSetChannels[i];
}
return MS::kSuccess;
}
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;
}
static MStatus
convertToMayaMeshData(OpenSubdiv::Far::TopologyRefiner const & refiner,
std::vector<Vertex> const & refinedVerts,
bool hasUVs, std::vector<FVarVertexUV> const & refinedUVs,
bool hasColors, std::vector<FVarVertexColor> const & refinedColors,
MFnMesh & inMeshFn, MObject newMeshDataObj) {
MStatus status;
typedef OpenSubdiv::Far::ConstIndexArray IndexArray;
int maxlevel = refiner.GetMaxLevel();
OpenSubdiv::Far::TopologyLevel const & refLastLevel
= refiner.GetLevel(maxlevel);
int nfaces = refLastLevel.GetNumFaces();
// Init Maya Data
// Face Counts
MIntArray faceCounts(nfaces);
for (int face=0; face < nfaces; ++face) {
faceCounts[face] = 4;
}
// Face Connects
MIntArray faceConnects(nfaces*4);
for (int face=0, idx=0; face < nfaces; ++face) {
IndexArray fverts = refLastLevel.GetFaceVertices(face);
for (int vert=0; vert < fverts.size(); ++vert) {
faceConnects[idx++] = fverts[vert];
}
}
// Points
int nverts = refLastLevel.GetNumVertices();
int firstOfLastVert = refiner.GetNumVerticesTotal()
- nverts
- refiner.GetLevel(0).GetNumVertices();
MFloatPointArray points(nverts);
for (int vIt = 0; vIt < nverts; ++vIt) {
Vertex const & v = refinedVerts[firstOfLastVert + vIt];
points.set(vIt, v.position[0], v.position[1], v.position[2]);
}
// Create New Mesh from MFnMesh
MFnMesh newMeshFn;
MObject newMeshObj = newMeshFn.create(points.length(), faceCounts.length(),
points, faceCounts, faceConnects, newMeshDataObj, &status);
MCHECKERR(status, "Cannot create new mesh");
// Get face-varying set names and other info from the inMesh
MStringArray uvSetNames;
MStringArray colorSetNames;
std::vector<int> colorSetChannels;
std::vector<MFnMesh::MColorRepresentation> colorSetReps;
int totalColorSetChannels = 0;
status = getMayaFvarFieldParams(inMeshFn, uvSetNames, colorSetNames,
colorSetChannels, colorSetReps, totalColorSetChannels);
// Add new UVs back to the mesh if needed
if (hasUVs) {
MIntArray fvarConnects(faceConnects.length());
int count = 0;
for (int f = 0; f < refLastLevel.GetNumFaces(); ++f) {
IndexArray faceIndices = refLastLevel.GetFaceFVarValues(f, CHANNELUV);
for (int index = 0 ; index < faceIndices.size() ; ++index) {
fvarConnects[count++] = faceIndices[index];
}
}
int nuvs = refLastLevel.GetNumFVarValues(CHANNELUV);
int firstOfLastUvs = refiner.GetNumFVarValuesTotal(CHANNELUV)
- nuvs
- refiner.GetLevel(0).GetNumFVarValues(CHANNELUV);
MFloatArray uCoord(nuvs), vCoord(nuvs);
for (int uvIt = 0; uvIt < nuvs; ++uvIt) {
FVarVertexUV const & uv = refinedUVs[firstOfLastUvs + uvIt];
uCoord[uvIt] = uv.u;
vCoord[uvIt] = uv.v;
}
// Currently, the plugin only supports one UV set
int uvSetIndex = 0;
if (uvSetIndex > 0) {
status = newMeshFn.createUVSetDataMesh( uvSetNames[uvSetIndex] );
MCHECKERR(status, "Cannot create UVSet");
}
static MString defaultUVName("map1");
MString const * uvname = uvSetIndex==0 ?
&defaultUVName : &uvSetNames[uvSetIndex];
status = newMeshFn.setUVs(uCoord, vCoord, uvname);
MCHECKERR(status, "Cannot set UVs for set : "+*uvname);
status = newMeshFn.assignUVs(faceCounts, fvarConnects, uvname);
MCHECKERR(status, "Cannot assign UVs");
}
// Add new colors back to the mesh if needed
if (hasColors) {
int count = 0;
MIntArray fvarConnects2(faceConnects.length());
for (int f = 0 ; f < refLastLevel.GetNumFaces(); ++f) {
IndexArray faceIndices = refLastLevel.GetFaceFVarValues(f, CHANNELCOLOR);
for (int index = 0 ; index < faceIndices.size() ; ++index) {
fvarConnects2[count++] = faceIndices[index];
}
}
int ncols = refLastLevel.GetNumFVarValues(CHANNELCOLOR);
int firstOfLastCols = refiner.GetNumFVarValuesTotal(CHANNELCOLOR)
- ncols
- refiner.GetLevel(0).GetNumFVarValues(CHANNELCOLOR);
MColorArray colorArray(ncols);
for (int colIt = 0; colIt < ncols; ++colIt) {
FVarVertexColor const & c = refinedColors[firstOfLastCols + colIt];
colorArray.set(colIt, c.r, c.g, c.b, c.a);
}
// Currently, the plugin only supports one color sets
int colorSetIndex = 0;
// Assign color buffer and map the ids for each face-vertex
// API Limitation: Cannot set MColorRepresentation here
status = newMeshFn.createColorSetDataMesh(
colorSetNames[colorSetIndex]);
MCHECKERR(status, "Cannot create ColorSet");
bool isColorClamped = inMeshFn.isColorClamped(
colorSetNames[colorSetIndex], &status);
MCHECKERR(status, "Can not get Color Clamped ");
status = newMeshFn.setIsColorClamped(
colorSetNames[colorSetIndex], isColorClamped);
MCHECKERR(status, "Can not set Color Clamped : " + isColorClamped);
status = newMeshFn.setColors(
colorArray, &colorSetNames[colorSetIndex],
colorSetReps[colorSetIndex]);
MCHECKERR(status, "Can not set Colors");
status = newMeshFn.assignColors(
fvarConnects2, &colorSetNames[colorSetIndex]);
MCHECKERR(status, "Can not assign Colors");
}
return MS::kSuccess;
}
// Propagate objectGroups from inMesh to subdivided outMesh
// Note: Currently only supporting facet groups (for per-facet shading)
MStatus
createSmoothMesh_objectGroups( MFnMesh const & inMeshFn,
MFnMeshData const & inMeshDat, MFnMeshData &newMeshDat, int level, int numSubfaces ) {
MStatus status;
MIntArray newCompElems;
std::vector<unsigned int> offsets; // mapping of offsets for subdivided faces
for(unsigned int gi=0; gi<inMeshDat.objectGroupCount(); gi++) {
unsigned int compId = inMeshDat.objectGroup(gi, &status);
MCHECKERR(status, "cannot get objectGroup() comp ID.");
MFn::Type compType = inMeshDat.objectGroupType(compId, &status);
MCHECKERR(status, "cannot get objectGroupType().");
// Only supporting kMeshPolygonComponent ObjectGroups at this time
// Skip the other types
if (compType == MFn::kMeshPolygonComponent) {
// get elements from inMesh objectGroupComponent
MIntArray compElems;
MFnSingleIndexedComponent compFn(
inMeshDat.objectGroupComponent(compId), &status );
MCHECKERR(status, "cannot get MFnSingleIndexedComponent for inMeshDat.objectGroupComponent().");
compFn.getElements(compElems);
if (compElems.length()==0) {
continue;
}
// over-allocation to maximum possible length
newCompElems.setLength( numSubfaces );
if (offsets.empty()) {
// lazy population of the subface offsets table
int nfaces = inMeshFn.numPolygons();
offsets.resize(nfaces);
for (int i=0, count=0; i<nfaces; ++i) {
int nverts = inMeshFn.polygonVertexCount(i),
nsubfaces = computeNumSubfaces(nverts, level);
offsets[i] = count;
count+=nsubfaces;
}
}
unsigned int idx = 0;
// convert/populate newCompElems from compElems of inMesh
// (with new face indices) to outMesh
for (unsigned int i=0; i < compElems.length(); i++) {
int nverts = inMeshFn.polygonVertexCount(compElems[i]),
nsubfaces = computeNumSubfaces(nverts, level);
unsigned int subFaceOffset = offsets[compElems[i]];
for (int j=0; j<nsubfaces; ++j) {
newCompElems[idx++] = subFaceOffset++;
}
}
// resize to actual length
newCompElems.setLength( idx );
// create comp
createComp(newMeshDat, compType, compId, newCompElems);
}
}
return MS::kSuccess;
}
// Create and Add Attributes
//
// Description:
// This method is called to create and initialize all of the attributes
// and attribute dependencies for this node type. This is only called
// once when the node type is registered with Maya.
//
// Return Values:
// MS::kSuccess
// MS::kFailure
//
MStatus
MayaPolySmooth::initialize() {
MStatus stat;
MFnCompoundAttribute cAttr;
MFnEnumAttribute eAttr;
MFnGenericAttribute gAttr;
MFnLightDataAttribute lAttr;
MFnMatrixAttribute mAttr;
MFnMessageAttribute msgAttr;
MFnNumericAttribute nAttr;
MFnTypedAttribute tAttr;
MFnUnitAttribute uAttr;
// MAYA_NODE_BUILDER:BEG [ATTRIBUTE CREATION] ==========
// a_inputPolymesh : This is a description for this attribute
a_inputPolymesh = tAttr.create("inputPolymesh", "ip", MFnData::kMesh, MObject::kNullObj, &stat);
MCHECKERR( stat, "cannot create MayaPolySmooth::inputPolymesh" );
stat = tAttr.setReadable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::inputPolymesh.setReadable()" );
stat = tAttr.setWritable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::inputPolymesh.setWritable()" );
stat = tAttr.setHidden(true);
MCHECKERR( stat, "cannot MayaPolySmooth::inputPolymesh.setHidden()" );
stat = addAttribute( a_inputPolymesh );
MCHECKERR( stat, "cannot MayaPolySmooth::addAttribute(a_inputPolymesh)" );
// a_output : This is a description for this attribute
a_output = tAttr.create("output", "out", MFnData::kMesh, MObject::kNullObj, &stat);
MCHECKERR( stat, "cannot create MayaPolySmooth::output" );
stat = tAttr.setReadable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::output.setReadable()" );
stat = tAttr.setWritable(false);
MCHECKERR( stat, "cannot MayaPolySmooth::output.setWritable()" );
stat = tAttr.setHidden(true);
MCHECKERR( stat, "cannot MayaPolySmooth::output.setHidden()" );
stat = addAttribute( a_output );
MCHECKERR( stat, "cannot MayaPolySmooth::addAttribute(a_output)" );
// a_subdivisionLevels : The number of recursive quad subdivisions to perform on each face.
a_subdivisionLevels = nAttr.create("subdivisionLevels", "sl", MFnNumericData::kInt, 0.0, &stat);
MCHECKERR( stat, "cannot create MayaPolySmooth::subdivisionLevels" );
stat = nAttr.setDefault(2);
MCHECKERR( stat, "cannot MayaPolySmooth::subdivisionLevels.setDefault(2)" );
stat = nAttr.setMin(0);
MCHECKERR( stat, "cannot MayaPolySmooth::subdivisionLevels.setMin(0)" );
stat = nAttr.setMax(10);
MCHECKERR( stat, "cannot MayaPolySmooth::subdivisionLevels.setMax(10)" );
stat = nAttr.setSoftMax(4);
MCHECKERR( stat, "cannot MayaPolySmooth::subdivisionLevels.setSoftMax(4)" );
stat = nAttr.setReadable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::subdivisionLevels.setReadable()" );
stat = nAttr.setWritable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::subdivisionLevels.setWritable()" );
stat = addAttribute( a_subdivisionLevels );
MCHECKERR( stat, "cannot MayaPolySmooth::addAttribute(a_subdivisionLevels)" );
// a_recommendedIsolation : The number of recursive quad subdivisions to perform on each face.
a_recommendedIsolation = nAttr.create("recommendedIsolation", "ri", MFnNumericData::kInt, 0.0, &stat);
MCHECKERR( stat, "cannot create MayaPolySmooth::recommendedIsolation" );
stat = nAttr.setDefault(2);
MCHECKERR( stat, "cannot MayaPolySmooth::recommendedIsolation.setDefault(0)" );
stat = nAttr.setMin(0);
MCHECKERR( stat, "cannot MayaPolySmooth::recommendedIsolation.setMin(0)" );
stat = nAttr.setMax(10);
MCHECKERR( stat, "cannot MayaPolySmooth::recommendedIsolation.setSoftMax(10)" );
stat = nAttr.setReadable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::recommendedIsolation.setReadable()" );
stat = nAttr.setWritable(false);
MCHECKERR( stat, "cannot MayaPolySmooth::recommendedIsolation.setWritable()" );
stat = nAttr.setHidden(false);
MCHECKERR( stat, "cannot MayaPolySmooth::recommendedIsolation.setHidden()" );
stat = addAttribute( a_recommendedIsolation );
MCHECKERR( stat, "cannot MayaPolySmooth::addAttribute(a_recommendedIsolation)" );
// a_vertBoundaryMethod : Controls how boundary edges and vertices are interpolated. <ul> <li>Smooth, Edges: Renderman: InterpolateBoundaryEdgeOnly</li> <li>Smooth, Edges and Corners: Renderman: InterpolateBoundaryEdgeAndCorner</li> </ul>
a_vertBoundaryMethod = eAttr.create("vertBoundaryMethod", "vbm", 0, &stat);
MCHECKERR( stat, "cannot create MayaPolySmooth::vertBoundaryMethod" );
stat = eAttr.addField("Interpolate Edges", k_BoundaryMethod_InterpolateBoundaryEdgeOnly);
MCHECKERR( stat, "cannot MayaPolySmooth::vertBoundaryMethod.addField(Interpolate Edges, k_BoundaryMethod_InterpolateBoundaryEdgeOnly)" );
stat = eAttr.addField("Interpolate Edges And Corners", k_BoundaryMethod_InterpolateBoundaryEdgeAndCorner);
MCHECKERR( stat, "cannot MayaPolySmooth::vertBoundaryMethod.addField(Interpolate Edges And Corners, k_BoundaryMethod_InterpolateBoundaryEdgeAndCorner)" );
stat = eAttr.setDefault(k_BoundaryMethod_InterpolateBoundaryEdgeOnly);
MCHECKERR( stat, "cannot MayaPolySmooth::vertBoundaryMethod.setDefault(k_BoundaryMethod_InterpolateBoundaryEdgeOnly)" );
stat = eAttr.setReadable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::vertBoundaryMethod.setReadable()" );
stat = eAttr.setWritable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::vertBoundaryMethod.setWritable()" );
stat = addAttribute( a_vertBoundaryMethod );
MCHECKERR( stat, "cannot MayaPolySmooth::addAttribute(a_vertBoundaryMethod)" );
// a_fvarBoundaryMethod : Controls how boundaries are treated for face-varying data (UVs and Vertex Colors). <ul> <li>Bi-linear (None): Renderman: InterpolateBoundaryNone</li> <li>Smooth, (Edge Only): Renderman: InterpolateBoundaryEdgeOnly</li> <li>Smooth, (Edges and Corners: Renderman: InterpolateBoundaryEdgeAndCorner</li> <li>Smooth, (ZBrush and Maya "Smooth Internal Only"): Renderman: InterpolateBoundaryAlwaysSharp</li> </ul>
a_fvarBoundaryMethod = eAttr.create("fvarBoundaryMethod", "fvbm", 0, &stat);
MCHECKERR( stat, "cannot create MayaPolySmooth::fvarBoundaryMethod" );
stat = eAttr.addField("Bi-linear (None)", k_BoundaryMethod_InterpolateBoundaryNone);
MCHECKERR( stat, "cannot MayaPolySmooth::fvarBoundaryMethod.addField(Bi-linear (None), k_BoundaryMethod_InterpolateBoundaryNone)" );
stat = eAttr.addField("Smooth (Edge Only)", k_BoundaryMethod_InterpolateBoundaryEdgeOnly);
MCHECKERR( stat, "cannot MayaPolySmooth::fvarBoundaryMethod.addField(Smooth (Edge Only), k_BoundaryMethod_InterpolateBoundaryEdgeOnly)" );
stat = eAttr.addField("Smooth (Edge and Corner)", k_BoundaryMethod_InterpolateBoundaryEdgeAndCorner);
MCHECKERR( stat, "cannot MayaPolySmooth::fvarBoundaryMethod.addField(Smooth (Edge and Corner), k_BoundaryMethod_InterpolateBoundaryEdgeAndCorner)" );
stat = eAttr.addField("Smooth (Always Sharp)", k_BoundaryMethod_InterpolateBoundaryAlwaysSharp);
MCHECKERR( stat, "cannot MayaPolySmooth::fvarBoundaryMethod.addField(Smooth (Always Sharp), k_BoundaryMethod_InterpolateBoundaryAlwaysSharp)" );
stat = eAttr.setDefault(k_BoundaryMethod_InterpolateBoundaryNone);
MCHECKERR( stat, "cannot MayaPolySmooth::fvarBoundaryMethod.setDefault(k_BoundaryMethod_InterpolateBoundaryNone)" );
stat = eAttr.setReadable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::fvarBoundaryMethod.setReadable()" );
stat = eAttr.setWritable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::fvarBoundaryMethod.setWritable()" );
stat = addAttribute( a_fvarBoundaryMethod );
MCHECKERR( stat, "cannot MayaPolySmooth::addAttribute(a_fvarBoundaryMethod)" );
// a_fvarPropagateCorners :
a_fvarPropagateCorners = nAttr.create("fvarPropagateCorners", "fvpc", MFnNumericData::kBoolean, 0.0, &stat);
MCHECKERR( stat, "cannot create MayaPolySmooth::fvarPropagateCorners" );
stat = nAttr.setDefault(false);
MCHECKERR( stat, "cannot MayaPolySmooth::fvarPropagateCorners.setDefault(false)" );
stat = nAttr.setReadable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::fvarPropagateCorners.setReadable()" );
stat = nAttr.setWritable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::fvarPropagateCorners.setWritable()" );
stat = addAttribute( a_fvarPropagateCorners );
MCHECKERR( stat, "cannot MayaPolySmooth::addAttribute(a_fvarPropagateCorners)" );
// a_smoothTriangles : Apply a special subdivision rule be applied to all triangular faces that was empirically determined to make triangles subdivide more smoothly.
a_smoothTriangles = nAttr.create("smoothTriangles", "stri", MFnNumericData::kBoolean, 0.0, &stat);
MCHECKERR( stat, "cannot create MayaPolySmooth::smoothTriangles" );
stat = nAttr.setDefault(true);
MCHECKERR( stat, "cannot MayaPolySmooth::smoothTriangles.setDefault(true)" );
stat = nAttr.setReadable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::smoothTriangles.setReadable()" );
stat = nAttr.setWritable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::smoothTriangles.setWritable()" );
stat = addAttribute( a_smoothTriangles );
MCHECKERR( stat, "cannot MayaPolySmooth::addAttribute(a_smoothTriangles)" );
// a_creaseMethod : Controls how boundary edges and vertices are interpolated. <ul> <li>Normal</li> <li>Chaikin: Improves the appearance of multiedge creases with varying weight</li> </ul>
a_creaseMethod = eAttr.create("creaseMethod", "crm", 0, &stat);
MCHECKERR( stat, "cannot create MayaPolySmooth::creaseMethod" );
stat = eAttr.addField("Normal", k_creaseMethod_normal);
MCHECKERR( stat, "cannot MayaPolySmooth::creaseMethod.addField(Normal, k_creaseMethod_normal)" );
stat = eAttr.addField("Chaikin", k_creaseMethod_chaikin);
MCHECKERR( stat, "cannot MayaPolySmooth::creaseMethod.addField(Chaikin, k_creaseMethod_chaikin)" );
stat = eAttr.setDefault(0);
MCHECKERR( stat, "cannot MayaPolySmooth::creaseMethod.setDefault(0)" );
stat = eAttr.setReadable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::creaseMethod.setReadable()" );
stat = eAttr.setWritable(true);
MCHECKERR( stat, "cannot MayaPolySmooth::creaseMethod.setWritable()" );
stat = addAttribute( a_creaseMethod );
MCHECKERR( stat, "cannot MayaPolySmooth::addAttribute(a_creaseMethod)" );
// MAYA_NODE_BUILDER:END [ATTRIBUTE CREATION] ==========
// Set up a dependency between the input and the output. This will cause
// the output to be marked dirty when the input changes. The output will
// then be recomputed the next time the value of the output is requested.
//
// MAYA_NODE_BUILDER:BEG [ATTRIBUTE DEPENDS] ==========
stat = attributeAffects( a_creaseMethod, a_output );
MCHECKERR( stat, "cannot have attribute creaseMethod affect output" );
stat = attributeAffects( a_inputPolymesh, a_output );
MCHECKERR( stat, "cannot have attribute inputPolymesh affect output" );
stat = attributeAffects( a_subdivisionLevels, a_output );
MCHECKERR( stat, "cannot have attribute subdivisionLevels affect output" );
stat = attributeAffects( a_smoothTriangles, a_output );
MCHECKERR( stat, "cannot have attribute smoothTriangles affect output" );
stat = attributeAffects( a_fvarPropagateCorners, a_output );
MCHECKERR( stat, "cannot have attribute fvarPropagateCorners affect output" );
stat = attributeAffects( a_vertBoundaryMethod, a_output );
MCHECKERR( stat, "cannot have attribute vertBoundaryMethod affect output" );
stat = attributeAffects( a_fvarBoundaryMethod, a_output );
MCHECKERR( stat, "cannot have attribute fvarBoundaryMethod affect output" );
stat = attributeAffects( a_creaseMethod, a_recommendedIsolation );
MCHECKERR( stat, "cannot have attribute creaseMethod affect .si output" );
stat = attributeAffects( a_inputPolymesh, a_recommendedIsolation );
MCHECKERR( stat, "cannot have attribute inputPolymesh affect .si output" );
stat = attributeAffects( a_subdivisionLevels, a_recommendedIsolation );
MCHECKERR( stat, "cannot have attribute subdivisionLevels affect .si output" );
stat = attributeAffects( a_smoothTriangles, a_recommendedIsolation );
MCHECKERR( stat, "cannot have attribute smoothTriangles affect .si output" );
stat = attributeAffects( a_fvarPropagateCorners, a_recommendedIsolation );
MCHECKERR( stat, "cannot have attribute fvarPropagateCorners affect .si output" );
stat = attributeAffects( a_vertBoundaryMethod, a_recommendedIsolation );
MCHECKERR( stat, "cannot have attribute vertBoundaryMethod affect .si output" );
stat = attributeAffects( a_fvarBoundaryMethod, a_recommendedIsolation );
MCHECKERR( stat, "cannot have attribute fvarBoundaryMethod affect .si output" );
// MAYA_NODE_BUILDER:END [ATTRIBUTE DEPENDS] ==========
return MS::kSuccess;
}
// ====================================
// Compute
// ====================================
//
// Description:
// This method computes the value of the given output plug based
// on the values of the input attributes.
//
// Arguments:
// plug - the plug to compute
// data - object that provides access to the attributes for this node
//
MStatus OsdPolySmooth::compute( const MPlug& plug, MDataBlock& data ) {
MStatus returnStatus;
// 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();
// Convert attr values to OSD enums
HMesh::InterpolateBoundaryMethod vertInterpBoundaryMethod =
ConvertMayaBoundaryMethodShortToOsdInterpolateBoundaryMethod(vertBoundaryMethod);
HMesh::InterpolateBoundaryMethod fvarInterpBoundaryMethod =
ConvertMayaBoundaryMethodShortToOsdInterpolateBoundaryMethod(fvarBoundaryMethod);
HCatmark::CreaseSubdivision creaseMethod =
(creaseMethodVal == k_creaseMethod_chaikin) ?
HCatmark::k_CreaseChaikin : HCatmark::k_CreaseNormal;
HCatmark::TriangleSubdivision triangleSubdivision =
smoothTriangles ? HCatmark::k_New : HCatmark::k_Normal;
// == Get Mesh Functions and Iterators ==========================
MFnMeshData inMeshDat(inMeshObj);
MFnMesh inMeshFn(inMeshObj, &returnStatus);
MCHECKERR(returnStatus, "ERROR getting inMeshFn\n");
MItMeshPolygon inMeshItPolygon(inMeshObj, &returnStatus);
MCHECKERR(returnStatus, "ERROR getting inMeshItPolygon\n");
// == Convert MFnMesh to OpenSubdiv =============================
// Create the hbrMesh
// Note: These fvar values only need to be kept alive through the life of the farMesh
std::vector<int> fvarIndices;
std::vector<int> fvarWidths;
HMesh *hbrMesh = createOsdHbrFromPoly(
inMeshFn, inMeshItPolygon, fvarIndices, fvarWidths);
assert(hbrMesh);
// Create the farMesh if successfully created the hbrMesh
if (hbrMesh) {
// Set Boundary methods and other hbr paramters
hbrMesh->SetInterpolateBoundaryMethod( vertInterpBoundaryMethod );
hbrMesh->SetFVarInterpolateBoundaryMethod( fvarInterpBoundaryMethod );
hbrMesh->SetFVarPropagateCorners(fvarPropCorners);
hbrMesh->GetSubdivision()->SetCreaseSubdivisionMethod(creaseMethod);
// Set HBR Catmark Subdivision parameters
HCatmark *catmarkSubdivision = dynamic_cast<HCatmark *>(hbrMesh->GetSubdivision());
if (catmarkSubdivision) {
catmarkSubdivision->SetTriangleSubdivisionMethod(triangleSubdivision);
}
// Finalize subd calculations -- apply boundary interpolation rules and resolves singular verts, etc.
// NOTE: This HAS to be called after all HBR parameters are set
hbrMesh->Finish();
int ncoarseverts = hbrMesh->GetNumVertices();
// Create a FarMesh from the HBR mesh and pass into
// It will be owned by the OsdMesh and deleted in the ~OsdMesh()
FMeshFactory meshFactory(hbrMesh, subdivisionLevel, false);
FMesh *farMesh = meshFactory.Create((hbrMesh->GetTotalFVarWidth() > 0));
// == Setup OSD Data Structures =========================
int numVertexElements = 3; // only track vertex positions
int numVaryingElements = 0; // XXX Future: Revise to include varying ColorSets
int numVertices = inMeshFn.numVertices();
int numFarVerts = farMesh->GetNumVertices();
static OpenSubdiv::OsdCpuComputeController computeController = OpenSubdiv::OsdCpuComputeController();
OpenSubdiv::OsdCpuComputeController::ComputeContext *computeContext =
OpenSubdiv::OsdCpuComputeController::ComputeContext::Create(farMesh);
OpenSubdiv::OsdCpuVertexBuffer *vertexBuffer =
OpenSubdiv::OsdCpuVertexBuffer::Create(numVertexElements, numFarVerts );
OpenSubdiv::OsdCpuVertexBuffer *varyingBuffer =
(numVaryingElements) ? OpenSubdiv::OsdCpuVertexBuffer::Create(numVaryingElements, numFarVerts) : NULL;
// == UPDATE VERTICES (can be done after farMesh generated from topology) ==
float const * vertex3fArray = inMeshFn.getRawPoints(&returnStatus);
vertexBuffer->UpdateData(vertex3fArray, 0, numVertices );
// Hbr dupes singular vertices during Mesh::Finish() - we need
// to duplicate their positions in the vertex buffer.
if (ncoarseverts > numVertices) {
MIntArray polyverts;
for (int i=numVertices; i<ncoarseverts; ++i) {
HVertex const * v = hbrMesh->GetVertex(i);
HFace const * f = v->GetIncidentEdge()->GetFace();
int vidx = -1;
for (int j=0; j<f->GetNumVertices(); ++j) {
if (f->GetVertex(j)==v) {
vidx = j;
break;
}
}
assert(vidx>-1);
inMeshFn.getPolygonVertices(f->GetID(), polyverts);
int vert = polyverts[vidx];
vertexBuffer->UpdateData(&vertex3fArray[0]+vert*numVertexElements, i, 1);
}
}
// == Delete HBR
// Can now delete the hbrMesh as we will only be referencing the farMesh from this point on
delete hbrMesh;
hbrMesh = NULL;
// == Subdivide OpenSubdiv mesh ==========================
computeController.Refine(computeContext, farMesh->GetKernelBatches(), vertexBuffer, varyingBuffer);
computeController.Synchronize();
// == Convert subdivided OpenSubdiv mesh to MFnMesh Data outputMesh =============
// Create New Mesh Data Object
MFnMeshData newMeshData;
MObject newMeshDataObj = newMeshData.create(&returnStatus);
MCHECKERR(returnStatus, "ERROR creating outputData");
// Create out mesh
returnStatus = convertOsdFarToMayaMeshData(farMesh, vertexBuffer, subdivisionLevel, inMeshFn, newMeshDataObj);
MCHECKERR(returnStatus, "ERROR convertOsdFarToMayaMesh");
// Propagate objectGroups from inMesh to outMesh (for per-facet shading, etc)
returnStatus = createSmoothMesh_objectGroups(inMeshDat, subdivisionLevel, newMeshData );
// Write to output plug
MDataHandle outMeshH = data.outputValue(a_output, &returnStatus);
MCHECKERR(returnStatus, "ERROR getting polygon data handle\n");
outMeshH.set(newMeshDataObj);
// == Cleanup OSD ============================================
// REVISIT: Re-add these deletes
delete(vertexBuffer);
delete(varyingBuffer);
delete(computeContext);
delete(farMesh);
// 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, &returnStatus);
returnStatus = outMeshH.copy(data.outputValue(a_inputPolymesh, &returnStatus));
MCHECKERR(returnStatus, "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;
}
MStatus convertOsdFarToMayaMeshData(
FMesh const * farMesh,
OpenSubdiv::OsdCpuVertexBuffer * vertexBuffer,
int subdivisionLevel,
MFnMesh const & inMeshFn,
MObject newMeshDataObj ) {
MStatus returnStatus;
// Get sizing data from OSD
const OpenSubdiv::FarPatchTables *farPatchTables = farMesh->GetPatchTables();
int numPolygons = farPatchTables->GetNumFaces(); // use the highest level stored in the patch tables
const unsigned int *polygonConnects_orig = farPatchTables->GetFaceVertices(); // use the highest level stored in the patch tables
const OpenSubdiv::FarSubdivisionTables<OpenSubdiv::OsdVertex> *farSubdivTables = farMesh->GetSubdivisionTables();
unsigned int numVertices = farSubdivTables->GetNumVertices(subdivisionLevel);
unsigned int vertexOffset = farSubdivTables->GetFirstVertexOffset(subdivisionLevel);
// Init Maya Data
MFloatPointArray points(numVertices);
MIntArray faceCounts(numPolygons); // number of edges for each polygon. Assume quads (4-edges per face)
MIntArray faceConnects(numPolygons*4); // array of vertex ids for all edges. assuming quads
// -- Face Counts
for (int i=0; i < numPolygons; ++i) {
faceCounts[i] = 4;
}
// -- Face Connects
for (unsigned int i=0; i < faceConnects.length(); i++) {
faceConnects[i] = polygonConnects_orig[i] - vertexOffset; // adjust vertex indices so that v0 is at index 0
}
// -- Points
// Number of floats in each vertex. (positions, normals, etc)
int numFloatsPerVertex = vertexBuffer->GetNumElements();
assert(numFloatsPerVertex == 3); // assuming only xyz stored for each vertex
const float *vertexData = vertexBuffer->BindCpuBuffer();
float *ptrVertexData;
for (unsigned int i=0; i < numVertices; i++) {
// make sure to offset to the first osd vertex for that subd level
unsigned int osdRawVertexIndex = i + vertexOffset;
// Lookup the data in the vertexData
ptrVertexData = (float *) vertexData + ((osdRawVertexIndex) * numFloatsPerVertex);
points.set(i, ptrVertexData[0], ptrVertexData[1], ptrVertexData[2]);
}
// Create New Mesh from MFnMesh
MFnMesh newMeshFn;
MObject newMeshObj = newMeshFn.create(points.length(), faceCounts.length(),
points, faceCounts, faceConnects, newMeshDataObj, &returnStatus);
MCHECKERR(returnStatus, "Cannot create new mesh");
// Attach UVs (if present)
// ASSUMPTION: Only tracking UVs as FVar data. Will need to change this
// ASSUMPTION: OSD has a unique UV for each face-vertex
int fvarTotalWidth = farMesh->GetTotalFVarWidth();
if (fvarTotalWidth > 0) {
// Get face-varying set names and other info from the inMesh
MStringArray uvSetNames;
MStringArray colorSetNames;
std::vector<int> colorSetChannels;
std::vector<MFnMesh::MColorRepresentation> colorSetReps;
int totalColorSetChannels = 0;
returnStatus = getMayaFvarFieldParams(inMeshFn, uvSetNames, colorSetNames, colorSetChannels, colorSetReps, totalColorSetChannels);
int numUVSets = uvSetNames.length();
int expectedFvarTotalWidth = numUVSets*2 + totalColorSetChannels;
assert(fvarTotalWidth == expectedFvarTotalWidth);
const OpenSubdiv::FarPatchTables::FVarDataTable &fvarDataTable = farPatchTables->GetFVarDataTable();
assert(fvarDataTable.size() == expectedFvarTotalWidth*faceConnects.length());
// Create an array of indices to map each face-vert to the UV and ColorSet Data
MIntArray fvarConnects(faceConnects.length());
for (unsigned int i=0; i < faceConnects.length(); i++) {
fvarConnects[i] = i;
}
MFloatArray uCoord(faceConnects.length());
MFloatArray vCoord(faceConnects.length());
for (int uvSetIndex=0; uvSetIndex < numUVSets; uvSetIndex++) {
for(unsigned int vertid=0; vertid < faceConnects.length(); vertid++) {
int fvarItem = vertid*fvarTotalWidth + uvSetIndex*2; // stride per vertex is the fvarTotalWidth
uCoord[vertid] = fvarDataTable[fvarItem];
vCoord[vertid] = fvarDataTable[fvarItem+1];
}
// Assign UV buffer and map the uvids for each face-vertex
if (uvSetIndex != 0) { // assume uvset index 0 is the default UVset, so do not create
returnStatus = newMeshFn.createUVSetDataMesh( uvSetNames[uvSetIndex] );
}
MCHECKERR(returnStatus, "Cannot create UVSet");
newMeshFn.setUVs(uCoord,vCoord, &uvSetNames[uvSetIndex]);
newMeshFn.assignUVs(faceCounts, fvarConnects, &uvSetNames[uvSetIndex]);
}
MColorArray colorArray(faceConnects.length());
int colorSetRelativeStartIndex = numUVSets*2;
for (unsigned int colorSetIndex=0; colorSetIndex < colorSetNames.length(); colorSetIndex++) {
for(unsigned int vertid=0; vertid < faceConnects.length(); vertid++) {
int fvarItem = vertid*fvarTotalWidth + colorSetRelativeStartIndex;
if (colorSetChannels[colorSetIndex] == 1) {
colorArray[vertid].r = fvarDataTable[fvarItem];
colorArray[vertid].g = fvarDataTable[fvarItem];
colorArray[vertid].b = fvarDataTable[fvarItem];
colorArray[vertid].a = 1.0f;
} else if (colorSetChannels[colorSetIndex] == 3) {
colorArray[vertid].r = fvarDataTable[fvarItem];
colorArray[vertid].g = fvarDataTable[fvarItem+1];
colorArray[vertid].b = fvarDataTable[fvarItem+2];
colorArray[vertid].a = 1.0f;
} else {
colorArray[vertid].r = fvarDataTable[fvarItem];
colorArray[vertid].g = fvarDataTable[fvarItem+1];
colorArray[vertid].b = fvarDataTable[fvarItem+2];
colorArray[vertid].a = fvarDataTable[fvarItem+3];
}
}
// Assign UV buffer and map the uvids for each face-vertex
// API Limitation: Cannot set MColorRepresentation here
returnStatus = newMeshFn.createColorSetDataMesh(colorSetNames[colorSetIndex]);
MCHECKERR(returnStatus, "Cannot create ColorSet");
bool isColorClamped = inMeshFn.isColorClamped(colorSetNames[colorSetIndex], &returnStatus);
newMeshFn.setIsColorClamped(colorSetNames[colorSetIndex], isColorClamped);
newMeshFn.setColors(colorArray, &colorSetNames[colorSetIndex], colorSetReps[colorSetIndex]);
newMeshFn.assignColors(fvarConnects, &colorSetNames[colorSetIndex]);
// Increment colorSet start location in fvar buffer
colorSetRelativeStartIndex += colorSetChannels[colorSetIndex];
}
}
return MS::kSuccess;
}
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);
float maxCreaseSharpness=0.0f;
OpenSubdiv::Far::TopologyRefiner * refiner =
gatherTopology(inMeshFn, inMeshItPolygon, type, options, &maxCreaseSharpness);
assert(refiner);
// Refine & Interpolate
refiner->RefineUniform(OpenSubdiv::Far::TopologyRefiner::UniformOptions(subdivisionLevel));
Vertex const * controlVerts =
reinterpret_cast<Vertex const *>(inMeshFn.getRawPoints(&status));
std::vector<Vertex> refinedVerts(
refiner->GetNumVerticesTotal() - refiner->GetLevel(0).GetNumVertices());
Vertex const * srcVerts = controlVerts;
Vertex * dstVerts = &refinedVerts[0];
for (int level = 1; level <= subdivisionLevel; ++level) {
OpenSubdiv::Far::PrimvarRefiner(*refiner).Interpolate(level, srcVerts, dstVerts);
srcVerts = dstVerts;
dstVerts += refiner->GetLevel(level).GetNumVertices();
}
// == 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, 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;
}
static MStatus
convertToMayaMeshData(OpenSubdiv::Far::TopologyRefiner const & refiner,
std::vector<Vertex> const & vertexBuffer, MFnMesh const & inMeshFn,
MObject newMeshDataObj) {
MStatus status;
typedef OpenSubdiv::Far::ConstIndexArray IndexArray;
int maxlevel = refiner.GetMaxLevel();
OpenSubdiv::Far::TopologyLevel const & refLastLevel
= refiner.GetLevel(maxlevel);
int nfaces = refLastLevel.GetNumFaces();
// Init Maya Data
// -- Face Counts
MIntArray faceCounts(nfaces);
for (int face=0; face < nfaces; ++face) {
faceCounts[face] = 4;
}
// -- Face Connects
MIntArray faceConnects(nfaces*4);
for (int face=0, idx=0; face < nfaces; ++face) {
IndexArray fverts = refLastLevel.GetFaceVertices(face);
for (int vert=0; vert < fverts.size(); ++vert) {
faceConnects[idx++] = fverts[vert];
}
}
// -- Points
MFloatPointArray points(refLastLevel.GetNumVertices());
Vertex const * v = &vertexBuffer.at(0);
for (int level=1; level<=maxlevel; ++level) {
int nverts = refiner.GetLevel(level).GetNumVertices();
if (level==maxlevel) {
for (int vert=0; vert < nverts; ++vert, ++v) {
points.set(vert, v->position[0], v->position[1], v->position[2]);
}
} else {
v += nverts;
}
}
// Create New Mesh from MFnMesh
MFnMesh newMeshFn;
MObject newMeshObj = newMeshFn.create(points.length(), faceCounts.length(),
points, faceCounts, faceConnects, newMeshDataObj, &status);
MCHECKERR(status, "Cannot create new mesh");
int fvarTotalWidth = 0;
if (fvarTotalWidth > 0) {
// Get face-varying set names and other info from the inMesh
MStringArray uvSetNames;
MStringArray colorSetNames;
std::vector<int> colorSetChannels;
std::vector<MFnMesh::MColorRepresentation> colorSetReps;
int totalColorSetChannels = 0;
status = getMayaFvarFieldParams(inMeshFn, uvSetNames, colorSetNames,
colorSetChannels, colorSetReps, totalColorSetChannels);
#if defined(DEBUG) or defined(_DEBUG)
int numUVSets = uvSetNames.length();
int expectedFvarTotalWidth = numUVSets*2 + totalColorSetChannels;
assert(fvarTotalWidth == expectedFvarTotalWidth);
#endif
// XXXX fvar stuff here
}
return MS::kSuccess;
}