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;
}
/* static */
bool
UsdMayaTranslatorMesh::_AssignColorSetPrimvarToMesh(
const UsdGeomMesh& primSchema,
const UsdGeomPrimvar& primvar,
MFnMesh& meshFn)
{
const TfToken& primvarName = primvar.GetPrimvarName();
const SdfValueTypeName& typeName = primvar.GetTypeName();
MString colorSetName(primvarName.GetText());
// If the primvar is displayOpacity and it is a FloatArray, check if
// displayColor is authored. If not, we'll import this 'displayOpacity'
// primvar as a 'displayColor' color set. This supports cases where the
// user created a single channel value for displayColor.
// Note that if BOTH displayColor and displayOpacity are authored, they will
// be imported as separate color sets. We do not attempt to combine them
// into a single color set.
if (primvarName == UsdMayaMeshColorSetTokens->DisplayOpacityColorSetName &&
typeName == SdfValueTypeNames->FloatArray) {
if (!UsdMayaRoundTripUtil::IsAttributeUserAuthored(primSchema.GetDisplayColorPrimvar())) {
colorSetName = UsdMayaMeshColorSetTokens->DisplayColorColorSetName.GetText();
}
}
// We'll need to convert colors from linear to display if this color set is
// for display colors.
const bool isDisplayColor =
(colorSetName == UsdMayaMeshColorSetTokens->DisplayColorColorSetName.GetText());
// Get the raw data before applying any indexing. We'll only populate one
// of these arrays based on the primvar's typeName, and we'll also set the
// color representation so we know which array to use later.
VtFloatArray alphaArray;
VtVec3fArray rgbArray;
VtVec4fArray rgbaArray;
MFnMesh::MColorRepresentation colorRep;
size_t numValues = 0;
MStatus status = MS::kSuccess;
if (typeName == SdfValueTypeNames->FloatArray) {
colorRep = MFnMesh::kAlpha;
if (!primvar.Get(&alphaArray) || alphaArray.empty()) {
status = MS::kFailure;
} else {
numValues = alphaArray.size();
}
} else if (typeName == SdfValueTypeNames->Float3Array ||
typeName == SdfValueTypeNames->Color3fArray) {
colorRep = MFnMesh::kRGB;
if (!primvar.Get(&rgbArray) || rgbArray.empty()) {
status = MS::kFailure;
} else {
numValues = rgbArray.size();
}
} else if (typeName == SdfValueTypeNames->Float4Array ||
typeName == SdfValueTypeNames->Color4fArray) {
colorRep = MFnMesh::kRGBA;
if (!primvar.Get(&rgbaArray) || rgbaArray.empty()) {
status = MS::kFailure;
} else {
numValues = rgbaArray.size();
}
} else {
TF_WARN("Unsupported color set primvar type '%s' for primvar '%s' on "
"mesh: %s",
typeName.GetAsToken().GetText(),
primvarName.GetText(),
primvar.GetAttr().GetPrimPath().GetText());
return false;
}
if (status != MS::kSuccess || numValues == 0) {
TF_WARN("Could not read color set values from primvar '%s' on mesh: %s",
primvarName.GetText(),
primvar.GetAttr().GetPrimPath().GetText());
return false;
}
VtIntArray assignmentIndices;
int unauthoredValuesIndex = -1;
if (primvar.GetIndices(&assignmentIndices)) {
// The primvar IS indexed, so the indices array is what determines the
// number of color values.
numValues = assignmentIndices.size();
unauthoredValuesIndex = primvar.GetUnauthoredValuesIndex();
}
// Go through the color data and translate the values into MColors in the
// colorArray, taking into consideration that indexed data may have been
// authored sparsely. If the assignmentIndices array is empty then the data
// is NOT indexed.
// Note that with indexed data, the data is added to the arrays in ascending
// component ID order according to the primvar's interpolation (ascending
// face ID for uniform interpolation, ascending vertex ID for vertex
// interpolation, etc.). This ordering may be different from the way the
// values are ordered in the primvar. Because of this, we recycle the
// assignmentIndices array as we go to store the new mapping from component
// index to color index.
MColorArray colorArray;
for (size_t i = 0; i < numValues; ++i) {
int valueIndex = i;
if (i < assignmentIndices.size()) {
// The data is indexed, so consult the indices array for the
// correct index into the data.
valueIndex = assignmentIndices[i];
if (valueIndex == unauthoredValuesIndex) {
// This component is unauthored, so just update the
// mapping in assignmentIndices and then skip the value.
// We don't actually use the value at the unassigned index.
assignmentIndices[i] = -1;
continue;
}
// We'll be appending a new value, so the current length of the
// array gives us the new value's index.
assignmentIndices[i] = colorArray.length();
}
GfVec4f colorValue(1.0);
switch(colorRep) {
case MFnMesh::kAlpha:
colorValue[3] = alphaArray[valueIndex];
break;
case MFnMesh::kRGB:
colorValue[0] = rgbArray[valueIndex][0];
colorValue[1] = rgbArray[valueIndex][1];
colorValue[2] = rgbArray[valueIndex][2];
break;
case MFnMesh::kRGBA:
colorValue[0] = rgbaArray[valueIndex][0];
colorValue[1] = rgbaArray[valueIndex][1];
colorValue[2] = rgbaArray[valueIndex][2];
colorValue[3] = rgbaArray[valueIndex][3];
break;
default:
break;
}
if (isDisplayColor) {
colorValue = UsdMayaColorSpace::ConvertLinearToMaya(colorValue);
}
MColor mColor(colorValue[0], colorValue[1], colorValue[2], colorValue[3]);
colorArray.append(mColor);
}
// colorArray now stores all of the values and any unassigned components
// have had their indices set to -1, so update the unauthored values index.
unauthoredValuesIndex = -1;
const bool clamped = UsdMayaRoundTripUtil::IsPrimvarClamped(primvar);
status = meshFn.createColorSet(colorSetName, nullptr, clamped, colorRep);
if (status != MS::kSuccess) {
TF_WARN("Unable to create color set '%s' for mesh: %s",
colorSetName.asChar(),
meshFn.fullPathName().asChar());
return false;
}
// Create colors on the mesh from the values we collected out of the
// primvar. We'll assign mesh components to these values below.
status = meshFn.setColors(colorArray, &colorSetName, colorRep);
if (status != MS::kSuccess) {
TF_WARN("Unable to set color data on color set '%s' for mesh: %s",
colorSetName.asChar(),
meshFn.fullPathName().asChar());
return false;
}
const TfToken& interpolation = primvar.GetInterpolation();
// Build an array of value assignments for each face vertex in the mesh.
// Any assignments left as -1 will not be assigned a value.
MIntArray colorIds = _GetMayaFaceVertexAssignmentIds(meshFn,
interpolation,
assignmentIndices,
unauthoredValuesIndex);
status = meshFn.assignColors(colorIds, &colorSetName);
if (status != MS::kSuccess) {
TF_WARN("Could not assign color values to color set '%s' on mesh: %s",
colorSetName.asChar(),
meshFn.fullPathName().asChar());
return false;
}
return true;
}
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;
}
