private string GetMatName(MESkeletalMesh mesh, MESkeletalMesh.LODModelStruct lod, int s)
{
if (lod.Sections[s].MaterialIndex < mesh.Materials.Count)
{
if (mesh.Owner.isExport(mesh.Materials[lod.Sections[s].MaterialIndex] - 1))
{
return(mesh.Owner.Exports[mesh.Materials[lod.Sections[s].MaterialIndex] - 1].ObjectName);
}
else if (mesh.Owner.isImport(-mesh.Materials[lod.Sections[s].MaterialIndex] - 1))
{
return(mesh.Owner.Imports[-mesh.Materials[lod.Sections[s].MaterialIndex] - 1].ObjectName);
}
else
{
return("mat_" + s);
}
}
else
{
return("mat_" + s);
}
}
private FBXNode CreateFbxMesh(MESkeletalMesh mesh, string mname, FBXScene pScene, float exportScale = 1.0f)
{
MESkeletalMesh.LODModelStruct lod = mesh.LODModels[0];
FBXMesh fbxMesh = FBXMesh.Create(pScene, mname);
FBXNode lMeshNode = FBXNode.Create(pScene, mname);
lMeshNode.SetNodeAttribute(fbxMesh);
FBXGeometryElementTangent lGeometryElementTangent = fbxMesh.CreateElementTangent();
lGeometryElementTangent.SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
FBXGeometryElementMaterial lMaterialElement = fbxMesh.CreateElementMaterial();
lMaterialElement.SetMappingMode(FBXWrapper.MappingMode.eByPolygon);
lMaterialElement.SetReferenceMode(FBXWrapper.ReferenceMode.eIndexToDirect);
fbxMesh.InitControlPoints(lod.NumVertices);
// init UV maps
FBXGeometryElementUV[] UVs = new FBXGeometryElementUV[lod.Sections.Count];
for (int s = 0; s < lod.Sections.Count; s++)
{
string matName = GetMatName(mesh, lod, s);
UVs[s] = fbxMesh.CreateElementUV(matName);
UVs[s].SetMappingMode(FBXWrapper.MappingMode.eByControlPoint);
}
// vertices
for (int j = 0; j < lod.VertexBufferGPUSkin.Vertices.Count; j++)
{
var vertex = lod.VertexBufferGPUSkin.Vertices[j];
FBXVector4 position = new FBXVector4(vertex.Position.X * exportScale, -vertex.Position.Y * exportScale, vertex.Position.Z * exportScale, 0);
FBXVector4 normal = new FBXVector4(vertex.TangentX, 0, vertex.TangentZ, 0);
fbxMesh.SetControlPoint(j, position);
lGeometryElementTangent.Add(normal);
// uvs
for (int s = 0; s < lod.Sections.Count; s++)
{
var sectionVerts = GetSectionVertices(mesh, 0, s);
if (sectionVerts.Contains(j))
{
FBXVector4 texCoords = new FBXVector4(vertex.U, 1 - vertex.V, 0, 0);
UVs[s].Add(texCoords);
}
else
{
UVs[s].Add(new FBXVector4(0, 0, 0, 0));
}
}
}
// faces & mats
for (int s = 0; s < lod.Sections.Count; s++)
{
int chunkId = lod.Sections[s].ChunkIndex;
var chunk = lod.Chunks[chunkId];
// mat
string matName = GetMatName(mesh, lod, s);
lMeshNode.AddMaterial(pScene, matName);
// faces
for (int j = 0; j < lod.Sections[s].NumTriangles; j++)
{
int baseI = lod.Sections[s].BaseIndex;
fbxMesh.BeginPolygon(s);
fbxMesh.AddPolygon(lod.IndexBuffer.Indexes[baseI + j * 3]);
fbxMesh.AddPolygon(lod.IndexBuffer.Indexes[baseI + j * 3 + 1]);
fbxMesh.AddPolygon(lod.IndexBuffer.Indexes[baseI + j * 3 + 2]);
fbxMesh.EndPolygon();
}
}
return(lMeshNode);
}