void ToMayaMeshConverter::addUVSet( MFnMesh &fnMesh, const MIntArray &polygonCounts, IECore::ConstMeshPrimitivePtr mesh, const std::string &sPrimVarName, const std::string &tPrimVarName, const std::string &stIdPrimVarName, MString *uvSetName ) const
{
IECore::PrimitiveVariableMap::const_iterator sIt = mesh->variables.find( sPrimVarName );
bool haveS = sIt != mesh->variables.end();
IECore::PrimitiveVariableMap::const_iterator tIt = mesh->variables.find( tPrimVarName );
bool haveT = tIt != mesh->variables.end();
IECore::PrimitiveVariableMap::const_iterator stIdIt = mesh->variables.find( stIdPrimVarName );
bool haveSTId = stIdIt != mesh->variables.end();
if ( haveS && haveT )
{
if ( sIt->second.interpolation != IECore::PrimitiveVariable::FaceVarying )
{
IECore::msg( IECore::Msg::Warning,"ToMayaMeshConverter::doConversion", boost::format( "PrimitiveVariable \"%s\" has unsupported interpolation (expected FaceVarying).") % sPrimVarName );
return;
}
if ( tIt->second.interpolation != IECore::PrimitiveVariable::FaceVarying )
{
IECore::msg( IECore::Msg::Warning, "ToMayaMeshConverter::doConversion", boost::format( "PrimitiveVariable \"%s\" has unsupported interpolation (expected FaceVarying).") % tPrimVarName);
return;
}
if ( !sIt->second.data )
{
IECore::msg( IECore::Msg::Warning, "ToMayaMeshConverter::doConversion", boost::format( "PrimitiveVariable \"%s\" has no data." ) % sPrimVarName );
}
if ( !tIt->second.data )
{
IECore::msg( IECore::Msg::Warning, "ToMayaMeshConverter::doConversion", boost::format( "PrimitiveVariable \"%s\" has no data." ) % tPrimVarName );
}
/// \todo Employ some M*Array converters to simplify this
int numUVs = mesh->variableSize( IECore::PrimitiveVariable::FaceVarying );
IECore::ConstFloatVectorDataPtr u = IECore::runTimeCast<const IECore::FloatVectorData>(sIt->second.data);
if ( !u )
{
IECore::msg( IECore::Msg::Warning, "ToMayaMeshConverter::doConversion", boost::format( "PrimitiveVariable \"%s\" has unsupported type \"%s\"." ) % sPrimVarName % sIt->second.data->typeName() );
return;
}
assert( (int)u->readable().size() == numUVs );
IECore::ConstFloatVectorDataPtr v = IECore::runTimeCast<const IECore::FloatVectorData>(tIt->second.data);
if ( !v )
{
IECore::msg( IECore::Msg::Warning, "ToMayaMeshConverter::doConversion", boost::format( "PrimitiveVariable \"%s\" has unsupported type \"%s\"." ) % tPrimVarName % tIt->second.data->typeName() );
return;
}
assert( (int)v->readable().size() == numUVs );
const std::vector<float> &uAll = u->readable();
const std::vector<float> &vAll = v->readable();
if ( uvSetName )
{
bool setExists = false;
MStringArray existingSets;
fnMesh.getUVSetNames( existingSets );
for ( unsigned i=0; i < existingSets.length(); ++i )
{
if ( *uvSetName == existingSets[i] )
{
fnMesh.clearUVs( uvSetName );
setExists = true;
break;
}
}
if ( !setExists )
{
MDagPath dag;
MStatus s = fnMesh.getPath( dag );
if ( s )
{
fnMesh.createUVSetWithName( *uvSetName );
}
else
{
fnMesh.createUVSetDataMeshWithName( *uvSetName );
}
}
}
MIntArray uvIds;
uvIds.setLength( numUVs );
MFloatArray uArray;
MFloatArray vArray;
if( haveSTId )
{
// Get compressed uv values by matching them with their uvId.
IECore::ConstIntVectorDataPtr uvId = IECore::runTimeCast<const IECore::IntVectorData>(stIdIt->second.data);
if ( !uvId )
{
IECore::msg( IECore::Msg::Warning, "ToMayaMeshConverter::doConversion", boost::format( "PrimitiveVariable \"%s\" has unsupported type \"%s\"." ) % stIdPrimVarName % stIdIt->second.data->typeName() );
return;
}
const std::vector<int> &uvIdData = uvId->readable();
assert( (int)uvIdData.size() == numUVs );
int highestId = 0;
for ( int i = 0; i < numUVs; i++)
{
uvIds[i] = uvIdData[i];
if( uvIdData[i] > highestId )
{
highestId = uvIdData[i];
}
}
// u and v arrays need only be as long as the number of unique uvIds
uArray.setLength( highestId + 1 );
vArray.setLength( highestId + 1 );
for ( int i = 0; i < numUVs; i++ )
{
uArray[ uvIds[i] ] = uAll[i];
// FromMayaMeshConverter does the opposite of this
vArray[ uvIds[i] ] = 1 - vAll[i];
}
}
else
{
// If for some reason we cannot find the uv indices, set the UVs using the old way
// the performances in maya won't be good (for weigth painting in particular)
uArray.setLength( numUVs );
vArray.setLength( numUVs );
for ( int i = 0; i < numUVs; i++)
{
uArray[i] = u->readable()[i];
// FromMayaMeshConverter does the opposite of this
vArray[i] = 1 - v->readable()[i];
}
for ( int i = 0; i < numUVs; i++)
{
uvIds[i] = i;
}
}
MStatus s = fnMesh.setUVs( uArray, vArray, uvSetName );
if ( !s )
{
IECore::msg( IECore::Msg::Warning, "ToMayaMeshConverter::doConversion", "Failed to set UVs." );
return;
}
s = fnMesh.assignUVs( polygonCounts, uvIds, uvSetName );
if ( !s )
{
IECore::msg( IECore::Msg::Warning, "ToMayaMeshConverter::doConversion", "Failed to assign UVs." );
return;
}
}
else if ( haveS )
{
IECore::msg( IECore::Msg::Warning, "ToMayaMeshConverter::doConversion", boost::format( "Primitive variable \"%s\" found, but not \"%s\"." ) % sPrimVarName % tPrimVarName );
}
else if ( haveT )
{
IECore::msg( IECore::Msg::Warning, "ToMayaMeshConverter::doConversion", boost::format( "Primitive variable \"%s\" found, but not \"%s\"." ) % tPrimVarName % sPrimVarName );
}
else
{
assert( !uvSetName );
}
}
IECore::RunTimeTypedPtr ToGLMeshConverter::doConversion( IECore::ConstObjectPtr src, IECore::ConstCompoundObjectPtr operands ) const
{
IECore::MeshPrimitivePtr mesh = IECore::staticPointerCast<IECore::MeshPrimitive>( src->copy() ); // safe because the parameter validated it for us
if( !mesh->variableData<IECore::V3fVectorData>( "P", IECore::PrimitiveVariable::Vertex ) )
{
throw IECore::Exception( "Must specify primitive variable \"P\", of type V3fVectorData and interpolation type Vertex." );
}
if( mesh->variables.find( "N" )==mesh->variables.end() )
{
// the mesh has no normals - we need to explicitly add some. if it's a polygon
// mesh (interpolation==linear) then we add per-face normals for a faceted look
// and if it's a subdivision mesh we add smooth per-vertex normals.
IECore::MeshNormalsOpPtr normalOp = new IECore::MeshNormalsOp();
normalOp->inputParameter()->setValue( mesh );
normalOp->copyParameter()->setTypedValue( false );
normalOp->interpolationParameter()->setNumericValue(
mesh->interpolation() == "linear" ? IECore::PrimitiveVariable::Uniform : IECore::PrimitiveVariable::Vertex
);
normalOp->operate();
}
IECore::TriangulateOpPtr op = new IECore::TriangulateOp();
op->inputParameter()->setValue( mesh );
op->throwExceptionsParameter()->setTypedValue( false ); // it's better to see something than nothing
op->copyParameter()->setTypedValue( false );
op->operate();
IECore::FaceVaryingPromotionOpPtr faceVaryingOp = new IECore::FaceVaryingPromotionOp;
faceVaryingOp->inputParameter()->setValue( mesh );
faceVaryingOp->copyParameter()->setTypedValue( false );
faceVaryingOp->operate();
MeshPrimitivePtr glMesh = new MeshPrimitive( mesh->vertexIds() );
for ( IECore::PrimitiveVariableMap::iterator pIt = mesh->variables.begin(); pIt != mesh->variables.end(); ++pIt )
{
if ( pIt->second.data )
{
glMesh->addPrimitiveVariable( pIt->first, pIt->second );
}
else
{
IECore::msg( IECore::Msg::Warning, "ToGLMeshConverter", boost::format( "No data given for primvar \"%s\"" ) % pIt->first );
}
}
IECore::PrimitiveVariableMap::const_iterator sIt = mesh->variables.find( "s" );
IECore::PrimitiveVariableMap::const_iterator tIt = mesh->variables.find( "t" );
if ( sIt != mesh->variables.end() && tIt != mesh->variables.end() )
{
if ( sIt->second.interpolation != IECore::PrimitiveVariable::Constant
&& tIt->second.interpolation != IECore::PrimitiveVariable::Constant
&& sIt->second.interpolation == tIt->second.interpolation )
{
IECore::ConstFloatVectorDataPtr s = IECore::runTimeCast< const IECore::FloatVectorData >( sIt->second.data );
IECore::ConstFloatVectorDataPtr t = IECore::runTimeCast< const IECore::FloatVectorData >( tIt->second.data );
if ( s && t )
{
/// Should hold true if primvarsAreValid
assert( s->readable().size() == t->readable().size() );
IECore::V2fVectorDataPtr stData = new IECore::V2fVectorData();
stData->writable().resize( s->readable().size() );
for ( unsigned i = 0; i < s->readable().size(); i++ )
{
stData->writable()[i] = Imath::V2f( s->readable()[i], t->readable()[i] );
}
glMesh->addPrimitiveVariable( "st", IECore::PrimitiveVariable( sIt->second.interpolation, stData ) );
}
else
{
IECore::msg( IECore::Msg::Warning, "ToGLMeshConverter", "If specified, primitive variables \"s\" and \"t\" must be of type FloatVectorData and interpolation type FaceVarying." );
}
}
else
{
IECore::msg( IECore::Msg::Warning, "ToGLMeshConverter", "If specified, primitive variables \"s\" and \"t\" must be of type FloatVectorData and non-Constant interpolation type." );
}
}
else if ( sIt != mesh->variables.end() || tIt != mesh->variables.end() )
{
IECore::msg( IECore::Msg::Warning, "ToGLMeshConverter", "Primitive variable \"s\" or \"t\" found, but not both." );
}
return glMesh;
}