private void ExtractGeometry(BabylonAbstractMesh babylonAbstractMesh, List <GlobalVertex> vertices, List <int> indices, List <BabylonSubMesh> subMeshes, List <int> boneIds, IIGameSkin skin, IIGameMesh unskinnedMesh, IMatrix3 invertedWorldMatrix, bool hasUV, bool hasUV2, bool hasColor, bool hasAlpha, bool optimizeVertices, int multiMatsCount, IIGameNode meshNode, ref List <int> faceIndexes)
{
List <GlobalVertex>[] verticesAlreadyExported = null;
if (optimizeVertices)
{
verticesAlreadyExported = new List <GlobalVertex> [unskinnedMesh.NumberOfVerts];
}
var indexStart = 0;
// Whether or not to store order in which faces are exported
// Storage is used when exporting Morph Targets geometry
// To ensure face order is identical, especially with multimaterials involved
bool storeFaceIndexes = faceIndexes == null;
if (storeFaceIndexes)
{
faceIndexes = new List <int>();
}
int indexInFaceIndexesArray = 0;
for (int i = 0; i < multiMatsCount; ++i)
{
int materialId = meshNode.NodeMaterial?.GetMaterialID(i) ?? 0;
var indexCount = 0;
var minVertexIndex = int.MaxValue;
var maxVertexIndex = int.MinValue;
var subMesh = new BabylonSubMesh {
indexStart = indexStart, materialIndex = i
};
if (multiMatsCount == 1)
{
for (int j = 0; j < unskinnedMesh.NumberOfFaces; ++j)
{
IFaceEx face = null;
if (storeFaceIndexes)
{
face = unskinnedMesh.GetFace(j);
// Store face index (j = face.MeshFaceIndex)
faceIndexes.Add(j);
}
else
{
face = unskinnedMesh.GetFace(faceIndexes[indexInFaceIndexesArray++]);
}
ExtractFace(meshNode, skin, unskinnedMesh, babylonAbstractMesh, invertedWorldMatrix, vertices, indices, hasUV, hasUV2, hasColor, hasAlpha, verticesAlreadyExported, ref indexCount, ref minVertexIndex, ref maxVertexIndex, face, boneIds);
}
}
else
{
ITab <IFaceEx> materialFaces = unskinnedMesh.GetFacesFromMatID(materialId);
for (int j = 0; j < materialFaces.Count; ++j)
{
IFaceEx face = null;
if (storeFaceIndexes)
{
// Retreive face
#if MAX2017 || MAX2018
face = materialFaces[j];
#else
face = materialFaces[new IntPtr(j)];
#endif
// Store face index
faceIndexes.Add(face.MeshFaceIndex);
}
else
{
face = unskinnedMesh.GetFace(faceIndexes[indexInFaceIndexesArray++]);
}
ExtractFace(meshNode, skin, unskinnedMesh, babylonAbstractMesh, invertedWorldMatrix, vertices, indices, hasUV, hasUV2, hasColor, hasAlpha, verticesAlreadyExported, ref indexCount, ref minVertexIndex, ref maxVertexIndex, face, boneIds);
}
}
if (indexCount != 0)
{
subMesh.indexCount = indexCount;
subMesh.verticesStart = minVertexIndex;
subMesh.verticesCount = maxVertexIndex - minVertexIndex + 1;
indexStart += indexCount;
subMeshes.Add(subMesh);
}
}
}
private void ExtractGeometry(List <GlobalVertex> vertices, List <int> indices, List <BabylonSubMesh> subMeshes, List <int> boneIds, IIGameSkin skin, IIGameMesh unskinnedMesh, bool hasUV, bool hasUV2, bool hasColor, bool hasAlpha, bool optimizeVertices, int multiMatsCount, IIGameNode meshNode)
{
List <GlobalVertex>[] verticesAlreadyExported = null;
if (optimizeVertices)
{
verticesAlreadyExported = new List <GlobalVertex> [unskinnedMesh.NumberOfVerts];
}
var indexStart = 0;
for (int i = 0; i < multiMatsCount; ++i)
{
int materialId = meshNode.NodeMaterial?.GetMaterialID(i) ?? 0;
var indexCount = 0;
var minVertexIndex = int.MaxValue;
var maxVertexIndex = int.MinValue;
var subMesh = new BabylonSubMesh {
indexStart = indexStart, materialIndex = i
};
if (multiMatsCount == 1)
{
for (int j = 0; j < unskinnedMesh.NumberOfFaces; ++j)
{
var face = unskinnedMesh.GetFace(j);
ExtractFace(skin, unskinnedMesh, vertices, indices, hasUV, hasUV2, hasColor, hasAlpha, verticesAlreadyExported, ref indexCount, ref minVertexIndex, ref maxVertexIndex, face, boneIds);
}
}
else
{
ITab <IFaceEx> materialFaces = unskinnedMesh.GetFacesFromMatID(materialId);
for (int j = 0; j < materialFaces.Count; ++j)
{
#if MAX2017
var faceIndexer = j;
#else
var faceIndexer = new IntPtr(j);
#endif
var face = materialFaces[faceIndexer];
#if !MAX2017
Marshal.FreeHGlobal(faceIndexer);
#endif
ExtractFace(skin, unskinnedMesh, vertices, indices, hasUV, hasUV2, hasColor, hasAlpha, verticesAlreadyExported, ref indexCount, ref minVertexIndex, ref maxVertexIndex, face, boneIds);
}
}
if (indexCount != 0)
{
subMesh.indexCount = indexCount;
subMesh.verticesStart = minVertexIndex;
subMesh.verticesCount = maxVertexIndex - minVertexIndex + 1;
indexStart += indexCount;
subMeshes.Add(subMesh);
}
}
}
private void ExtractGeometry(BabylonAbstractMesh babylonAbstractMesh, List <GlobalVertex> vertices, List <int> indices, List <BabylonSubMesh> subMeshes, List <int> boneIds, IIGameSkin skin, IIGameMesh unskinnedMesh, IMatrix3 invertedWorldMatrix, IMatrix3 offsetTM, bool hasUV, bool hasUV2, bool hasColor, bool hasAlpha, bool optimizeVertices, int multiMatsCount, IIGameNode meshNode, ref List <int> faceIndexes)
{
Dictionary <GlobalVertex, List <GlobalVertex> > verticesAlreadyExported = null;
if (optimizeVertices)
{
verticesAlreadyExported = new Dictionary <GlobalVertex, List <GlobalVertex> >();
}
var indexStart = 0;
// Whether or not to store order in which faces are exported
// Storage is used when exporting Morph Targets geometry
// To ensure face order is identical, especially with multimaterials involved
bool storeFaceIndexes = faceIndexes == null;
if (storeFaceIndexes)
{
faceIndexes = new List <int>();
}
int indexInFaceIndexesArray = 0;
for (int i = 0; i < multiMatsCount; ++i)
{
int materialId = i;
var indexCount = 0;
var minVertexIndex = int.MaxValue;
var maxVertexIndex = int.MinValue;
var subMesh = new BabylonSubMesh {
indexStart = indexStart, materialIndex = i
};
if (multiMatsCount == 1)
{
for (int j = 0; j < unskinnedMesh.NumberOfFaces; ++j)
{
IFaceEx face = null;
if (storeFaceIndexes)
{
face = unskinnedMesh.GetFace(j);
// Store face index (j = face.MeshFaceIndex)
faceIndexes.Add(j);
}
else
{
face = unskinnedMesh.GetFace(faceIndexes[indexInFaceIndexesArray++]);
}
ExtractFace(skin, unskinnedMesh, babylonAbstractMesh, invertedWorldMatrix, offsetTM, vertices, indices, hasUV, hasUV2, hasColor, hasAlpha, verticesAlreadyExported, ref indexCount, ref minVertexIndex, ref maxVertexIndex, face, boneIds);
}
}
else
{
if (i == 0 || isMaterialDoubleSided == false)
{
ITab <IFaceEx> materialFaces = unskinnedMesh.GetFacesFromMatID(materialId);
for (int j = 0; j < materialFaces.Count; ++j)
{
IFaceEx face = null;
if (storeFaceIndexes)
{
// Retreive face
#if MAX2017 || MAX2018 || MAX2019 || MAX2020
face = materialFaces[j];
#else
face = materialFaces[new IntPtr(j)];
#endif
// Store face index
faceIndexes.Add(face.MeshFaceIndex);
}
else
{
face = unskinnedMesh.GetFace(faceIndexes[indexInFaceIndexesArray++]);
}
ExtractFace(skin, unskinnedMesh, babylonAbstractMesh, invertedWorldMatrix, offsetTM, vertices, indices, hasUV, hasUV2, hasColor, hasAlpha, verticesAlreadyExported, ref indexCount, ref minVertexIndex, ref maxVertexIndex, face, boneIds);
}
}
else
{
// It's a double sided material
// The back faces are created at runtime
// WARNING - Nested multimaterial and double sided material are not supported
minVertexIndex = vertices.Count;
maxVertexIndex = vertices.Count * 2 - 1;
// Vertices
int nbVertices = vertices.Count;
for (int index = 0; index < nbVertices; index++)
{
GlobalVertex vertexOrg = vertices[index];
// Duplicate vertex
GlobalVertex vertexNew = new GlobalVertex(vertexOrg);
// Inverse back vertices normal
vertexNew.Normal = vertexNew.Normal.MultiplyBy(-1);
vertexNew.Tangent = vertexNew.Tangent.MultiplyBy(-1);
vertices.Add(vertexNew);
}
// Faces
int nbIndices = indices.Count;
for (int index = 0; index < nbIndices; index += 3)
{
// Duplicate and flip faces
indices.Add(indices[index + 2] + nbIndices);
indices.Add(indices[index + 1] + nbIndices);
indices.Add(indices[index] + nbIndices);
indexCount += 3;
}
}
}
if (indexCount != 0)
{
subMesh.indexCount = indexCount;
subMesh.verticesStart = minVertexIndex;
subMesh.verticesCount = maxVertexIndex - minVertexIndex + 1;
indexStart += indexCount;
subMeshes.Add(subMesh);
}
}
}