private BabylonNode ExportMesh(MObject mObject, BabylonScene babylonScene)
{
MFnMesh mFnMesh = new MFnMesh(mObject);
MFnDagNode mFnDagNode = new MFnDagNode(mObject);
var mObjectParent = mFnMesh.parent(0);
MFnDagNode mFnDagNodeParent = new MFnDagNode(mObjectParent);
// --- prints ---
#region prints
RaiseVerbose("BabylonExporter.Mesh | mFnMesh data", 2);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.name=" + mFnMesh.name, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.absoluteName=" + mFnMesh.absoluteName, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.fullPathName=" + mFnMesh.fullPathName, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.partialPathName=" + mFnMesh.partialPathName, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.numVertices=" + mFnMesh.numVertices, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.numEdges=" + mFnMesh.numEdges, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.numPolygons=" + mFnMesh.numPolygons, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.numFaceVertices=" + mFnMesh.numFaceVertices, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.numNormals=" + mFnMesh.numNormals, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.numUVSets=" + mFnMesh.numUVSets, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.numUVsProperty=" + mFnMesh.numUVsProperty, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.activeColor=" + mFnMesh.activeColor.toString(), 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.attributeCount=" + mFnMesh.attributeCount, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.childCount=" + mFnMesh.childCount, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.displayColors=" + mFnMesh.displayColors, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.dormantColor=" + mFnMesh.dormantColor, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.hasUniqueName=" + mFnMesh.hasUniqueName, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.inUnderWorld=" + mFnMesh.inUnderWorld, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.isDefaultNode=" + mFnMesh.isDefaultNode, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.isInstanceable=" + mFnMesh.isInstanceable, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.isInstanced(true)=" + mFnMesh.isInstanced(true), 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.isInstanced(false)=" + mFnMesh.isInstanced(false), 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.isInstanced()=" + mFnMesh.isInstanced(), 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.isIntermediateObject=" + mFnMesh.isIntermediateObject, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.isShared=" + mFnMesh.isShared, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.numColorSets=" + mFnMesh.numColorSets, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.numColorsProperty=" + mFnMesh.numColorsProperty, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.objectColor=" + mFnMesh.objectColor, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.parentCount=" + mFnMesh.parentCount, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.parentNamespace=" + mFnMesh.parentNamespace, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.uuid().asString()=" + mFnMesh.uuid().asString(), 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.dagRoot().apiType=" + mFnMesh.dagRoot().apiType, 3);
RaiseVerbose("BabylonExporter.Mesh | mFnMesh.model.equalEqual(mFnMesh.objectProperty)=" + mFnMesh.model.equalEqual(mFnMesh.objectProperty), 3);
RaiseVerbose("BabylonExporter.Mesh | ToString(mFnMesh.transformationMatrix)=" + mFnMesh.transformationMatrix.toString(), 3);
var transformationMatrix = new MTransformationMatrix(mFnMesh.transformationMatrix);
RaiseVerbose("BabylonExporter.Mesh | transformationMatrix.getTranslation().toString()=" + transformationMatrix.getTranslation().toString(), 3);
var transformationMatrixParent = new MTransformationMatrix(mFnDagNodeParent.transformationMatrix);
RaiseVerbose("BabylonExporter.Mesh | transformationMatrixParent.getTranslation().toString()=" + transformationMatrixParent.getTranslation().toString(), 3);
// Geometry
MIntArray triangleCounts = new MIntArray();
MIntArray trianglesVertices = new MIntArray();
mFnMesh.getTriangles(triangleCounts, trianglesVertices);
RaiseVerbose("BabylonExporter.Mesh | triangleCounts.ToArray()=" + triangleCounts.ToArray().toString(), 3);
RaiseVerbose("BabylonExporter.Mesh | trianglesVertices.ToArray()=" + trianglesVertices.ToArray().toString(), 3);
int[] polygonsVertexCount = new int[mFnMesh.numPolygons];
for (int polygonId = 0; polygonId < mFnMesh.numPolygons; polygonId++)
{
polygonsVertexCount[polygonId] = mFnMesh.polygonVertexCount(polygonId);
}
RaiseVerbose("BabylonExporter.Mesh | polygonsVertexCount=" + polygonsVertexCount.toString(), 3);
//MFloatPointArray points = new MFloatPointArray();
//mFnMesh.getPoints(points);
//RaiseVerbose("BabylonExporter.Mesh | points.ToArray()=" + points.ToArray().Select(mFloatPoint => mFloatPoint.toString()), 3);
//MFloatVectorArray normals = new MFloatVectorArray();
//mFnMesh.getNormals(normals);
//RaiseVerbose("BabylonExporter.Mesh | normals.ToArray()=" + normals.ToArray().Select(mFloatPoint => mFloatPoint.toString()), 3);
for (int polygonId = 0; polygonId < mFnMesh.numPolygons; polygonId++)
{
MIntArray verticesId = new MIntArray();
RaiseVerbose("BabylonExporter.Mesh | polygonId=" + polygonId, 3);
int nbTriangles = triangleCounts[polygonId];
RaiseVerbose("BabylonExporter.Mesh | nbTriangles=" + nbTriangles, 3);
for (int triangleIndex = 0; triangleIndex < triangleCounts[polygonId]; triangleIndex++)
{
RaiseVerbose("BabylonExporter.Mesh | triangleIndex=" + triangleIndex, 3);
int[] triangleVertices = new int[3];
mFnMesh.getPolygonTriangleVertices(polygonId, triangleIndex, triangleVertices);
RaiseVerbose("BabylonExporter.Mesh | triangleVertices=" + triangleVertices.toString(), 3);
foreach (int vertexId in triangleVertices)
{
RaiseVerbose("BabylonExporter.Mesh | vertexId=" + vertexId, 3);
MPoint point = new MPoint();
mFnMesh.getPoint(vertexId, point);
RaiseVerbose("BabylonExporter.Mesh | point=" + point.toString(), 3);
MVector normal = new MVector();
mFnMesh.getFaceVertexNormal(polygonId, vertexId, normal);
RaiseVerbose("BabylonExporter.Mesh | normal=" + normal.toString(), 3);
}
}
}
#endregion
if (IsMeshExportable(mFnMesh) == false)
{
return(null);
}
RaiseMessage(mFnMesh.name, 1);
var babylonMesh = new BabylonMesh {
name = mFnMesh.name, id = mFnMesh.uuid().asString()
};
// Position / rotation / scaling / hierarchy
ExportNode(babylonMesh, mFnDagNode, babylonScene);
// Misc.
// TODO - Retreive from Maya
// TODO - What is the difference between isVisible and visibility?
// TODO - Fix fatal error: Attempting to save in C:/Users/Fabrice/AppData/Local/Temp/Fabrice.20171205.1613.ma
//babylonMesh.isVisible = mDagPath.isVisible;
//babylonMesh.visibility = meshNode.MaxNode.GetVisibility(0, Tools.Forever);
//babylonMesh.receiveShadows = meshNode.MaxNode.RcvShadows == 1;
//babylonMesh.applyFog = meshNode.MaxNode.ApplyAtmospherics == 1;
if (mFnMesh.numPolygons < 1)
{
RaiseError($"Mesh {babylonMesh.name} has no face", 2);
}
if (mFnMesh.numVertices < 3)
{
RaiseError($"Mesh {babylonMesh.name} has not enough vertices", 2);
}
if (mFnMesh.numVertices >= 65536)
{
RaiseWarning($"Mesh {babylonMesh.name} has more than 65536 vertices which means that it will require specific WebGL extension to be rendered. This may impact portability of your scene on low end devices.", 2);
}
// TODO - Material
var vertices = new List <GlobalVertex>();
var indices = new List <int>();
// TODO - UV, color, alpha
//var mappingChannels = unskinnedMesh.ActiveMapChannelNum;
//bool hasUV = false;
//bool hasUV2 = false;
//for (int i = 0; i < mappingChannels.Count; ++i)
//{
// var indexer = i;
// var channelNum = mappingChannels[indexer];
// if (channelNum == 1)
// {
// hasUV = true;
// }
// else if (channelNum == 2)
// {
// hasUV2 = true;
// }
//}
//var hasColor = unskinnedMesh.NumberOfColorVerts > 0;
//var hasAlpha = unskinnedMesh.GetNumberOfMapVerts(-2) > 0;
// TODO - Add custom properties
var optimizeVertices = false; // meshNode.MaxNode.GetBoolProperty("babylonjs_optimizevertices");
// Compute normals
var subMeshes = new List <BabylonSubMesh>();
ExtractGeometry(mFnMesh, vertices, indices, subMeshes, optimizeVertices);
if (vertices.Count >= 65536)
{
RaiseWarning($"Mesh {babylonMesh.name} has {vertices.Count} vertices. This may prevent your scene to work on low end devices where 32 bits indice are not supported", 2);
if (!optimizeVertices)
{
RaiseError("You can try to optimize your object using [Try to optimize vertices] option", 2);
}
}
RaiseMessage($"{vertices.Count} vertices, {indices.Count / 3} faces", 2);
// Buffers
babylonMesh.positions = vertices.SelectMany(v => v.Position).ToArray();
babylonMesh.normals = vertices.SelectMany(v => v.Normal).ToArray();
babylonMesh.subMeshes = subMeshes.ToArray();
// Buffers - Indices
babylonMesh.indices = indices.ToArray();
babylonScene.MeshesList.Add(babylonMesh);
RaiseMessage("BabylonExporter.Mesh | done", 3);
return(babylonMesh);
}
