void MayaObject::getMeshData(MPointArray& points, MFloatVectorArray& normals)
{
MStatus stat;
MObject meshObject = this->mobject;
MMeshSmoothOptions options;
MFnMesh tmpMesh(this->mobject);
MFnMeshData meshData;
MObject dataObject;
MObject smoothedObj;
// create smooth mesh if needed
if (tmpMesh.findPlug("displaySmoothMesh").asBool())
{
stat = tmpMesh.getSmoothMeshDisplayOptions(options);
if (stat)
{
if (!tmpMesh.findPlug("useSmoothPreviewForRender", false, &stat).asBool())
{
//Logging::debug(MString("useSmoothPreviewForRender turned off"));
int smoothLevel = tmpMesh.findPlug("renderSmoothLevel", false, &stat).asInt();
options.setDivisions(smoothLevel);
}
if (options.divisions() > 0)
{
dataObject = meshData.create();
smoothedObj = tmpMesh.generateSmoothMesh(dataObject, &options, &stat);
if (stat)
{
meshObject = smoothedObj;
}
}
}
}
MFnMesh meshFn(meshObject, &stat);
if (!stat)
{
MString error = stat.errorString();
Logging::error(error);
}
meshFn.getPoints(points);
meshFn.getNormals(normals, MSpace::kObject);
}
void MayaObject::getMeshData(MPointArray& points, MFloatVectorArray& normals, MFloatArray& uArray, MFloatArray& vArray, MIntArray& triPointIndices, MIntArray& triNormalIndices, MIntArray& triUvIndices, MIntArray& triMatIndices)
{
MStatus stat;
MObject meshObject = this->mobject;
MMeshSmoothOptions options;
MFnMesh tmpMesh(this->mobject, &stat);
MFnMeshData meshData;
MObject dataObject;
MObject smoothedObj;
// create smooth mesh if needed
if (tmpMesh.findPlug("displaySmoothMesh").asBool())
{
stat = tmpMesh.getSmoothMeshDisplayOptions(options);
if (stat)
{
if (!tmpMesh.findPlug("useSmoothPreviewForRender", false, &stat).asBool())
{
//Logging::debug(MString("useSmoothPreviewForRender turned off"));
int smoothLevel = tmpMesh.findPlug("renderSmoothLevel", false, &stat).asInt();
options.setDivisions(smoothLevel);
}
if (options.divisions() > 0)
{
dataObject = meshData.create();
smoothedObj = tmpMesh.generateSmoothMesh(dataObject, &options, &stat);
if (stat)
{
meshObject = smoothedObj;
}
}
}
}
MFnMesh meshFn(meshObject, &stat);
CHECK_MSTATUS(stat);
MItMeshPolygon faceIt(meshObject, &stat);
CHECK_MSTATUS(stat);
meshFn.getPoints(points);
meshFn.getNormals(normals, MSpace::kObject);
meshFn.getUVs(uArray, vArray);
uint numVertices = points.length();
uint numNormals = normals.length();
uint numUvs = uArray.length();
//Logging::debug(MString("numVertices ") + numVertices);
//Logging::debug(MString("numNormals ") + numNormals);
//Logging::debug(MString("numUvs ") + numUvs);
// some meshes may have no uv's
// to avoid problems I add a default uv coordinate
if (numUvs == 0)
{
Logging::warning(MString("Object has no uv's: ") + this->shortName);
uArray.append(0.0);
vArray.append(0.0);
}
for (uint nid = 0; nid < numNormals; nid++)
{
if (normals[nid].length() < 0.1f)
Logging::warning(MString("Malformed normal in ") + this->shortName);
}
MPointArray triPoints;
MIntArray triVtxIds;
MIntArray faceVtxIds;
MIntArray faceNormalIds;
for (faceIt.reset(); !faceIt.isDone(); faceIt.next())
{
int faceId = faceIt.index();
int numTris;
faceIt.numTriangles(numTris);
faceIt.getVertices(faceVtxIds);
int perFaceShadingGroup = 0;
if (this->perFaceAssignments.length() > 0)
perFaceShadingGroup = this->perFaceAssignments[faceId];
MIntArray faceUVIndices;
faceNormalIds.clear();
for (uint vtxId = 0; vtxId < faceVtxIds.length(); vtxId++)
{
faceNormalIds.append(faceIt.normalIndex(vtxId));
int uvIndex;
if (numUvs == 0)
{
faceUVIndices.append(0);
}
else{
faceIt.getUVIndex(vtxId, uvIndex);
//if (uvIndex > uArray.length())
// Logging::info(MString("-----------------> UV Problem!!! uvIndex ") + uvIndex + " > uvArray in object " + this->shortName);
faceUVIndices.append(uvIndex);
}
}
for (int triId = 0; triId < numTris; triId++)
{
int faceRelIds[3];
faceIt.getTriangle(triId, triPoints, triVtxIds);
for (uint triVtxId = 0; triVtxId < 3; triVtxId++)
{
for (uint faceVtxId = 0; faceVtxId < faceVtxIds.length(); faceVtxId++)
{
if (faceVtxIds[faceVtxId] == triVtxIds[triVtxId])
{
faceRelIds[triVtxId] = faceVtxId;
}
}
}
uint vtxId0 = faceVtxIds[faceRelIds[0]];
uint vtxId1 = faceVtxIds[faceRelIds[1]];
uint vtxId2 = faceVtxIds[faceRelIds[2]];
uint normalId0 = faceNormalIds[faceRelIds[0]];
uint normalId1 = faceNormalIds[faceRelIds[1]];
uint normalId2 = faceNormalIds[faceRelIds[2]];
uint uvId0 = faceUVIndices[faceRelIds[0]];
uint uvId1 = faceUVIndices[faceRelIds[1]];
uint uvId2 = faceUVIndices[faceRelIds[2]];
triPointIndices.append(vtxId0);
triPointIndices.append(vtxId1);
triPointIndices.append(vtxId2);
triNormalIndices.append(normalId0);
triNormalIndices.append(normalId1);
triNormalIndices.append(normalId2);
triUvIndices.append(uvId0);
triUvIndices.append(uvId1);
triUvIndices.append(uvId2);
triMatIndices.append(perFaceShadingGroup);
//Logging::debug(MString("vtxIds ") + vtxId0 + " " + vtxId1 + " " + vtxId2);
//Logging::debug(MString("nIds ") + normalId0 + " " + normalId1 + " " + normalId2);
//Logging::debug(MString("uvIds ") + uvId0 + " " + uvId1 + " " + uvId2);
}
}
}
bool getObjectShadingGroups(const MDagPath& shapeObjectDP, MIntArray& perFaceAssignments, MObjectArray& shadingGroups, bool needsPerFaceInfo=true)
{
// if obj is a light, simply return the mobject
if (shapeObjectDP.node().hasFn(MFn::kLight))
{
perFaceAssignments.clear();
shadingGroups.clear();
shadingGroups.append(shapeObjectDP.node());
return true;
}
if (shapeObjectDP.node().hasFn(MFn::kMesh))
{
// Find the Shading Engines Connected to the SourceNode
MFnMesh meshFn(shapeObjectDP.node());
perFaceAssignments.clear();
shadingGroups.clear();
MObjectArray comps;
// this one seems to be extremly much faster if we need no per face informations.
// e.g. for a sphere with 90000 faces, the non per face method needs 0.05 sec. whereas the
// method with per face info needs about 20 sec.
if (!needsPerFaceInfo)
{
meshFn.getConnectedSetsAndMembers(shapeObjectDP.instanceNumber(), shadingGroups, comps, true);
return true;
}
meshFn.getConnectedShaders(shapeObjectDP.instanceNumber(), shadingGroups, perFaceAssignments);
if (!meshFn.findPlug("displaySmoothMesh").asBool())
return true;
MIntArray indices;
indices = perFaceAssignments;
int subdivs = 0;
int multiplier = 0;
if (meshFn.findPlug("displaySmoothMesh").asBool())
{
MMeshSmoothOptions options;
MStatus status = meshFn.getSmoothMeshDisplayOptions(options);
if (status)
{
if (!meshFn.findPlug("useSmoothPreviewForRender", false, &status).asBool())
{
int smoothLevel = meshFn.findPlug("renderSmoothLevel", false, &status).asInt();
options.setDivisions(smoothLevel);
}
subdivs = options.divisions();
if (subdivs > 0)
multiplier = static_cast<int> (pow(4.0f, (subdivs - 1)));
}
}
if (multiplier > 0)
perFaceAssignments.clear();
for (unsigned int i = 0; i < indices.length(); i++)
{
int subdivisions = multiplier * meshFn.polygonVertexCount(i);
int index = 0 > indices[i] ? 0 : indices[i]; // non assigned has -1, but we want 0
perFaceAssignments.append(index);
// simply replicate the index for all subdiv faces
for (int k = 0; k < subdivisions - 1; k++)
perFaceAssignments.append(index);
}
return true;
}
if (shapeObjectDP.node().hasFn(MFn::kNurbsSurface)||shapeObjectDP.hasFn(MFn::kParticle)||shapeObjectDP.hasFn(MFn::kNParticle))
{
MObject instObjGroupsAttr;
if (shapeObjectDP.hasFn(MFn::kNurbsSurface))
{
MFnNurbsSurface fnNurbs(shapeObjectDP.node());
instObjGroupsAttr = fnNurbs.attribute("instObjGroups");
}
if (shapeObjectDP.hasFn(MFn::kParticle)||shapeObjectDP.hasFn(MFn::kNParticle))
{
MFnParticleSystem fnPart(shapeObjectDP.node());
instObjGroupsAttr = fnPart.attribute("instObjGroups");
}
MPlug instPlug(shapeObjectDP.node(), instObjGroupsAttr);
// Get the instance that our node is referring to;
// In other words get the Plug for instObjGroups[intanceNumber];
MPlug instPlugElem = instPlug.elementByLogicalIndex(shapeObjectDP.instanceNumber());
// Find the ShadingGroup plugs that we are connected to as Source
MPlugArray SGPlugArray;
instPlugElem.connectedTo(SGPlugArray, false, true);
perFaceAssignments.clear();
shadingGroups.clear();
// Loop through each ShadingGroup Plug
for (unsigned int i=0; i < SGPlugArray.length(); ++i)
{
shadingGroups.append(SGPlugArray[i].node());
return true;
}
}
return false;
}
