public void Load(string name, SKLFile skl = null)
{
MIntArray polygonIndexCounts = new MIntArray((uint)this.Indices.Count / 3);
MIntArray polygonIndices = new MIntArray((uint)this.Indices.Count);
MFloatPointArray vertices = new MFloatPointArray((uint)this.Vertices.Count);
MFloatArray arrayU = new MFloatArray((uint)this.Vertices.Count);
MFloatArray arrayV = new MFloatArray((uint)this.Vertices.Count);
MVectorArray normals = new MVectorArray((uint)this.Vertices.Count);
MIntArray normalIndices = new MIntArray((uint)this.Vertices.Count);
MFnMesh mesh = new MFnMesh();
MDagPath meshDagPath = new MDagPath();
MDGModifier modifier = new MDGModifier();
MFnSet set = new MFnSet();
for (int i = 0; i < this.Indices.Count / 3; i++)
{
polygonIndexCounts[i] = 3;
}
for (int i = 0; i < this.Indices.Count; i++)
{
polygonIndices[i] = this.Indices[i];
}
for (int i = 0; i < this.Vertices.Count; i++)
{
SKNVertex vertex = this.Vertices[i];
vertices[i] = new MFloatPoint(vertex.Position.X, vertex.Position.Y, vertex.Position.Z);
arrayU[i] = vertex.UV.X;
arrayV[i] = 1 - vertex.UV.Y;
normals[i] = new MVector(vertex.Normal.X, vertex.Normal.Y, vertex.Normal.Z);
normalIndices[i] = i;
}
//Assign mesh data
mesh.create(this.Vertices.Count, this.Indices.Count / 3, vertices, polygonIndexCounts, polygonIndices, arrayU, arrayV, MObject.kNullObj);
mesh.setVertexNormals(normals, normalIndices);
mesh.getPath(meshDagPath);
mesh.assignUVs(polygonIndexCounts, polygonIndices);
//Set names
mesh.setName(name);
MFnTransform transformNode = new MFnTransform(mesh.parent(0));
transformNode.setName("transform_" + name);
//Get render partition
MGlobal.displayInfo("SKNFile:Load - Searching for Render Partition");
MItDependencyNodes itDependencyNodes = new MItDependencyNodes(MFn.Type.kPartition);
MFnPartition renderPartition = new MFnPartition();
bool foundRenderPartition = false;
for (; !itDependencyNodes.isDone; itDependencyNodes.next())
{
renderPartition.setObject(itDependencyNodes.thisNode);
MGlobal.displayInfo("SKNFile:Load - Iterating through partition: " + renderPartition.name + " IsRenderPartition: " + renderPartition.isRenderPartition);
if (renderPartition.name == "renderPartition" && renderPartition.isRenderPartition)
{
MGlobal.displayInfo("SKNFile:Load - Found render partition");
foundRenderPartition = true;
break;
}
}
//Create Materials
for (int i = 0; i < this.Submeshes.Count; i++)
{
MFnDependencyNode dependencyNode = new MFnDependencyNode();
MFnLambertShader lambertShader = new MFnLambertShader();
SKNSubmesh submesh = this.Submeshes[i];
MObject shader = lambertShader.create(true);
lambertShader.setName(submesh.Name);
lambertShader.color = MaterialProvider.GetMayaColor(i);
MObject shadingEngine = dependencyNode.create("shadingEngine", submesh.Name + "_SG");
MObject materialInfo = dependencyNode.create("materialInfo", submesh.Name + "_MaterialInfo");
if (foundRenderPartition)
{
MPlug partitionPlug = new MFnDependencyNode(shadingEngine).findPlug("partition");
MPlug setsPlug = MayaHelper.FindFirstNotConnectedElement(renderPartition.findPlug("sets"));
modifier.connect(partitionPlug, setsPlug);
}
else
{
MGlobal.displayInfo("SKNFile:Load - Couldn't find Render Partition for mesh: " + name + "." + submesh.Name);
}
MPlug outColorPlug = lambertShader.findPlug("outColor");
MPlug surfaceShaderPlug = new MFnDependencyNode(shadingEngine).findPlug("surfaceShader");
modifier.connect(outColorPlug, surfaceShaderPlug);
MPlug messagePlug = new MFnDependencyNode(shadingEngine).findPlug("message");
MPlug shadingGroupPlug = new MFnDependencyNode(materialInfo).findPlug("shadingGroup");
modifier.connect(messagePlug, shadingGroupPlug);
modifier.doIt();
MFnSingleIndexedComponent component = new MFnSingleIndexedComponent();
MObject faceComponent = component.create(MFn.Type.kMeshPolygonComponent);
MIntArray groupPolygonIndices = new MIntArray();
uint endIndex = (submesh.StartIndex + submesh.IndexCount) / 3;
for (uint j = submesh.StartIndex / 3; j < endIndex; j++)
{
groupPolygonIndices.append((int)j);
}
component.addElements(groupPolygonIndices);
set.setObject(shadingEngine);
set.addMember(meshDagPath, faceComponent);
}
if (skl == null)
{
mesh.updateSurface();
}
else
{
MFnSkinCluster skinCluster = new MFnSkinCluster();
MSelectionList jointPathsSelectionList = new MSelectionList();
jointPathsSelectionList.add(meshDagPath);
for (int i = 0; i < skl.Influences.Count; i++)
{
short jointIndex = skl.Influences[i];
SKLJoint joint = skl.Joints[jointIndex];
jointPathsSelectionList.add(skl.JointDagPaths[jointIndex]);
MGlobal.displayInfo(string.Format("SKNFile:Load:Bind - Added joint [{0}] {1} to binding selection", joint.ID, joint.Name));
}
MGlobal.selectCommand(jointPathsSelectionList);
MGlobal.executeCommand("skinCluster -mi 4 -tsb -n skinCluster_" + name);
MPlug inMeshPlug = mesh.findPlug("inMesh");
MPlugArray inMeshConnections = new MPlugArray();
inMeshPlug.connectedTo(inMeshConnections, true, false);
if (inMeshConnections.length == 0)
{
MGlobal.displayError("SKNFile:Load:Bind - Failed to find the created Skin Cluster");
throw new Exception("SKNFile:Load:Bind - Failed to find the created Skin Cluster");
}
MPlug outputGeometryPlug = inMeshConnections[0];
MDagPathArray influencesDagPaths = new MDagPathArray();
skinCluster.setObject(outputGeometryPlug.node);
skinCluster.influenceObjects(influencesDagPaths);
MIntArray influenceIndices = new MIntArray((uint)skl.Influences.Count);
for (int i = 0; i < skl.Influences.Count; i++)
{
MDagPath influencePath = skl.JointDagPaths[skl.Influences[i]];
for (int j = 0; j < skl.Influences.Count; j++)
{
if (influencesDagPaths[j].partialPathName == influencePath.partialPathName)
{
influenceIndices[i] = j;
MGlobal.displayInfo("SKNReader:Load:Bind - Added Influence Joint: " + i + " -> " + j);
break;
}
}
}
MFnSingleIndexedComponent singleIndexedComponent = new MFnSingleIndexedComponent();
MObject vertexComponent = singleIndexedComponent.create(MFn.Type.kMeshVertComponent);
MIntArray groupVertexIndices = new MIntArray((uint)this.Vertices.Count);
for (int i = 0; i < this.Vertices.Count; i++)
{
groupVertexIndices[i] = i;
}
singleIndexedComponent.addElements(groupVertexIndices);
MGlobal.executeCommand(string.Format("setAttr {0}.normalizeWeights 0", skinCluster.name));
MDoubleArray weights = new MDoubleArray((uint)(this.Vertices.Count * skl.Influences.Count));
for (int i = 0; i < this.Vertices.Count; i++)
{
SKNVertex vertex = this.Vertices[i];
for (int j = 0; j < 4; j++)
{
double weight = vertex.Weights[j];
int influence = vertex.BoneIndices[j];
if (weight != 0)
{
weights[(i * skl.Influences.Count) + influence] = weight;
}
}
}
skinCluster.setWeights(meshDagPath, vertexComponent, influenceIndices, weights, false);
MGlobal.executeCommand(string.Format("setAttr {0}.normalizeWeights 1", skinCluster.name));
MGlobal.executeCommand(string.Format("skinPercent -normalize true {0} {1}", skinCluster.name, mesh.name));
mesh.updateSurface();
}
}
public void Create(SKLFile skl)
{
MSelectionList currentSelection = MGlobal.activeSelectionList;
MItSelectionList currentSelectionIterator = new MItSelectionList(currentSelection, MFn.Type.kMesh);
MDagPath meshDagPath = new MDagPath();
if (currentSelectionIterator.isDone)
{
MGlobal.displayError("SKNFile:Create - No mesh selected!");
throw new Exception("SKNFile:Create - No mesh selected!");
}
else
{
currentSelectionIterator.getDagPath(meshDagPath);
currentSelectionIterator.next();
if (!currentSelectionIterator.isDone)
{
MGlobal.displayError("SKNFile:Create - More than one mesh selected!");
throw new Exception("SKNFile:Create - More than one mesh selected!");
}
}
MFnMesh mesh = new MFnMesh(meshDagPath);
//Find Skin Cluster
MPlug inMeshPlug = mesh.findPlug("inMesh");
MPlugArray inMeshConnections = new MPlugArray();
inMeshPlug.connectedTo(inMeshConnections, true, false);
if (inMeshConnections.length == 0)
{
MGlobal.displayError("SKNFile:Create - Failed to find Skin Cluster!");
throw new Exception("SKNFile:Create - Failed to find Skin Cluster!");
}
MPlug outputGeometryPlug = inMeshConnections[0];
MFnSkinCluster skinCluster = new MFnSkinCluster(outputGeometryPlug.node);
MDagPathArray influenceDagPaths = new MDagPathArray();
uint influenceCount = skinCluster.influenceObjects(influenceDagPaths);
MGlobal.displayInfo("SKNFile:Create - Influence Count: " + influenceCount);
//Get SKL Influence Indices
MIntArray sklInfluenceIndices = new MIntArray(influenceCount);
for (int i = 0; i < influenceCount; i++)
{
MDagPath jointDagPath = influenceDagPaths[i];
MGlobal.displayInfo(jointDagPath.fullPathName);
//Loop through Joint DAG Paths, if we find a math for the influence, write the index
for (int j = 0; j < skl.JointDagPaths.Count; j++)
{
if (jointDagPath.equalEqual(skl.JointDagPaths[j]))
{
MGlobal.displayInfo("Found coresponding DAG path");
sklInfluenceIndices[i] = j;
break;
}
}
}
//Add Influence indices to SKL File
MIntArray maskInfluenceIndex = new MIntArray(influenceCount);
for (int i = 0; i < influenceCount; i++)
{
maskInfluenceIndex[i] = i;
skl.Influences.Add((short)sklInfluenceIndices[i]);
}
MObjectArray shaders = new MObjectArray();
MIntArray polygonShaderIndices = new MIntArray();
mesh.getConnectedShaders(meshDagPath.isInstanced ? meshDagPath.instanceNumber : 0, shaders, polygonShaderIndices);
uint shaderCount = shaders.length;
if (shaderCount > 32) //iirc 32 is the limit of how many submeshes there can be for an SKN file
{
MGlobal.displayError("SKNFile:Create - You've exceeded the maximum limit of 32 shaders");
throw new Exception("SKNFile:Create - You've exceeded the maximum limit of 32 shaders");
}
MIntArray vertexShaders = new MIntArray();
ValidateMeshTopology(mesh, meshDagPath, polygonShaderIndices, ref vertexShaders, shaderCount);
//Get Weights
MFnSingleIndexedComponent vertexIndexedComponent = new MFnSingleIndexedComponent();
MObject vertexComponent = vertexIndexedComponent.create(MFn.Type.kMeshVertComponent);
MIntArray groupVertexIndices = new MIntArray((uint)mesh.numVertices);
for (int i = 0; i < mesh.numVertices; i++)
{
groupVertexIndices[i] = i;
}
vertexIndexedComponent.addElements(groupVertexIndices);
MDoubleArray weights = new MDoubleArray();
uint weightsInfluenceCount = 0;
skinCluster.getWeights(meshDagPath, vertexComponent, weights, ref weightsInfluenceCount);
//Check if vertices don't have more than 4 influences and normalize weights
for (int i = 0; i < mesh.numVertices; i++)
{
int vertexInfluenceCount = 0;
double weightSum = 0;
for (int j = 0; j < weightsInfluenceCount; j++)
{
double weight = weights[(int)(i * weightsInfluenceCount) + j];
if (weight != 0)
{
vertexInfluenceCount++;
weightSum += weight;
}
}
if (vertexInfluenceCount > 4)
{
MGlobal.displayError("SKNFile:Create - Mesh contains a vertex with more than 4 influences");
throw new Exception("SKNFile:Create - Mesh contains a vertex with more than 4 influences");
}
//Normalize weights
for (int j = 0; j < weightsInfluenceCount; j++)
{
weights[(int)(i * influenceCount) + j] /= weightSum;
}
}
List <MIntArray> shaderVertexIndices = new List <MIntArray>();
List <List <SKNVertex> > shaderVertices = new List <List <SKNVertex> >();
List <MIntArray> shaderIndices = new List <MIntArray>();
for (int i = 0; i < shaderCount; i++)
{
shaderVertexIndices.Add(new MIntArray());
shaderVertices.Add(new List <SKNVertex>());
shaderIndices.Add(new MIntArray());
}
MItMeshVertex meshVertexIterator = new MItMeshVertex(meshDagPath);
for (meshVertexIterator.reset(); !meshVertexIterator.isDone; meshVertexIterator.next())
{
int index = meshVertexIterator.index();
int shader = vertexShaders[index];
if (shader == -1)
{
MGlobal.displayWarning("SKNFile:Create - Mesh contains a vertex with no shader");
continue;
}
MPoint pointPosition = meshVertexIterator.position(MSpace.Space.kWorld);
Vector3 position = new Vector3((float)pointPosition.x, (float)pointPosition.y, (float)pointPosition.z);
MVectorArray normals = new MVectorArray();
MIntArray uvIndices = new MIntArray();
Vector3 normal = new Vector3();
byte[] weightIndices = new byte[4];
float[] vertexWeights = new float[4];
meshVertexIterator.getNormals(normals);
//Normalize normals
for (int i = 0; i < normals.length; i++)
{
normal.X += (float)normals[i].x;
normal.Y += (float)normals[i].y;
normal.Z += (float)normals[i].z;
}
normal.X /= normals.length;
normal.Y /= normals.length;
normal.Z /= normals.length;
//Get Weight Influences and Weights
int weightsFound = 0;
for (int j = 0; j < weightsInfluenceCount && weightsFound < 4; j++)
{
double weight = weights[(int)(index * weightsInfluenceCount) + j];
if (weight != 0)
{
weightIndices[weightsFound] = (byte)maskInfluenceIndex[j];
vertexWeights[weightsFound] = (float)weight;
weightsFound++;
}
}
//Get unique UVs
meshVertexIterator.getUVIndices(uvIndices);
if (uvIndices.length != 0)
{
List <int> seen = new List <int>();
for (int j = 0; j < uvIndices.length; j++)
{
int uvIndex = uvIndices[j];
if (!seen.Contains(uvIndex))
{
seen.Add(uvIndex);
float u = 0;
float v = 0;
mesh.getUV(uvIndex, ref u, ref v);
SKNVertex vertex = new SKNVertex(position, weightIndices, vertexWeights, normal, new Vector2(u, 1 - v));
vertex.UVIndex = uvIndex;
shaderVertices[shader].Add(vertex);
shaderVertexIndices[shader].append(index);
}
}
}
else
{
MGlobal.displayError("SKNFile:Create - Mesh contains a vertex with no UVs");
throw new Exception("SKNFile:Create - Mesh contains a vertex with no UVs");
}
}
//Convert from Maya indices to data indices
int currentIndex = 0;
MIntArray dataIndices = new MIntArray((uint)mesh.numVertices, -1);
for (int i = 0; i < shaderCount; i++)
{
for (int j = 0; j < shaderVertexIndices[i].length; j++)
{
int index = shaderVertexIndices[i][j];
if (dataIndices[index] == -1)
{
dataIndices[index] = currentIndex;
shaderVertices[i][j].DataIndex = currentIndex;
}
else
{
shaderVertices[i][j].DataIndex = dataIndices[index];
}
currentIndex++;
}
this.Vertices.AddRange(shaderVertices[i]);
}
MItMeshPolygon polygonIterator = new MItMeshPolygon(meshDagPath);
for (polygonIterator.reset(); !polygonIterator.isDone; polygonIterator.next())
{
int polygonIndex = (int)polygonIterator.index();
int shaderIndex = polygonShaderIndices[polygonIndex];
MIntArray indices = new MIntArray();
MPointArray points = new MPointArray();
polygonIterator.getTriangles(points, indices);
if (polygonIterator.hasUVsProperty)
{
MIntArray vertices = new MIntArray();
MIntArray newIndices = new MIntArray(indices.length, -1);
polygonIterator.getVertices(vertices);
for (int i = 0; i < vertices.length; i++)
{
int dataIndex = dataIndices[vertices[i]];
int uvIndex;
polygonIterator.getUVIndex(i, out uvIndex);
if (dataIndex == -1 || dataIndex >= this.Vertices.Count)
{
MGlobal.displayError("SKNFIle:Create - Data Index outside of range");
throw new Exception("SKNFIle:Create - Data Index outside of range");
}
for (int j = dataIndex; j < this.Vertices.Count; j++)
{
if (this.Vertices[j].DataIndex != dataIndex)
{
MGlobal.displayError("SKNFIle:Create - Can't find corresponding face vertex in data");
throw new Exception("SKNFIle:Create - Can't find corresponding face vertex in data");
}
else if (this.Vertices[j].UVIndex == uvIndex)
{
for (int k = 0; k < indices.length; k++)
{
if (indices[k] == vertices[i])
{
newIndices[k] = j;
}
}
break;
}
}
}
for (int i = 0; i < newIndices.length; i++)
{
shaderIndices[shaderIndex].append(newIndices[i]);
}
}
else
{
for (int i = 0; i < indices.length; i++)
{
shaderIndices[shaderIndex].append(dataIndices[indices[i]]);
}
}
}
uint startIndex = 0;
uint startVertex = 0;
for (int i = 0; i < shaderCount; i++)
{
MPlug shaderPlug = new MFnDependencyNode(shaders[i]).findPlug("surfaceShader");
MPlugArray plugArray = new MPlugArray();
shaderPlug.connectedTo(plugArray, true, false);
string name = new MFnDependencyNode(plugArray[0].node).name;
uint indexCount = shaderIndices[i].length;
uint vertexCount = shaderVertexIndices[i].length;
//Copy indices to SKLFile
for (int j = 0; j < indexCount; j++)
{
this.Indices.Add((ushort)shaderIndices[i][j]);
}
this.Submeshes.Add(new SKNSubmesh(name, startVertex, vertexCount, startIndex, indexCount));
startIndex += indexCount;
startVertex += vertexCount;
}
MGlobal.displayInfo("SKNFile:Create - Created SKN File");
}