internal static Mesh MTDMeshFromMayaMesh(MFnMesh mayaMesh, MSpace.Space space)
{
PointList vertices = new PointList(mayaMesh.numVertices);
;
List <IndexGroup> faceIndexList = new List <IndexGroup>(mayaMesh.numPolygons);
MPointArray mayaVerts = new MPointArray();
mayaMesh.getPoints(mayaVerts, space);
if (MGlobal.isYAxisUp)
{
vertices.AddRange(mayaVerts.Select(v => Point.ByCoordinates(v.x, -v.z, v.y)));
}
else
{
vertices.AddRange(mayaVerts.Select(v => Point.ByCoordinates(v.x, v.y, v.z)));
}
MIntArray faceIndex = new MIntArray();
for (int i = 0; i < mayaMesh.numPolygons; i++)
{
mayaMesh.getPolygonVertices(i, faceIndex);
if (faceIndex.length > 4)
{
WarningException wa = new WarningException("The DynMesh will not show in Dynamo if it has any faces with 4 verts or more. The DynMesh can be represented as closed curves .");
return(null);
}
if (faceIndex.length == 3)
{
faceIndexList.Add(IndexGroup.ByIndices((uint)faceIndex[0], (uint)faceIndex[1], (uint)faceIndex[2]));
}
else
{
faceIndexList.Add(IndexGroup.ByIndices((uint)faceIndex[0], (uint)faceIndex[1], (uint)faceIndex[2],
(uint)faceIndex[3]));
}
}
mayaMesh.Dispose();
mayaVerts.Dispose();
faceIndex.Dispose();
using (vertices)
{
return(Mesh.ByPointsFaceIndices(vertices, faceIndexList));
}
}
internal static Curve CurveFromMfnNurbsCurveFromDag(MDagPath dagPath, MSpace.Space space)
{
Point3DCollection controlVertices;
List <double> weights, knots;
int degree;
bool closed, rational;
decomposeMayaCurve(dagPath, space, out controlVertices, out weights, out knots, out degree, out closed,
out rational);
// var controlPoints = new List<Point>(controlVertices.Count);
var curvePoints = new PointList(controlVertices.Count);
if (MGlobal.isYAxisUp)
{
curvePoints.AddRange(controlVertices.Select(cv => Point.ByCoordinates(cv.X, -cv.Z, cv.Y)));
}
else
{
curvePoints.AddRange(controlVertices.Select(cv => Point.ByCoordinates(cv.X, cv.Y, cv.Z)));
}
Curve theCurve;
if (closed)
{
theCurve = NurbsCurve.ByControlPoints(curvePoints, degree, true);
}
else
{
theCurve = NurbsCurve.ByControlPointsWeightsKnots(curvePoints, weights.ToArray(), knots.ToArray(),
degree);
}
curvePoints.Dispose();
return(theCurve);
}