private static void FbxIndexToFloatList(int faceIndex, Assimp.Mesh mesh, Face face, FbxMeshData fbxData)
{
int index = face.Indices[faceIndex];
Vector3D v = mesh.Vertices[index];
fbxData.vList.Add(v.X * fbxData.multiplier.X);
fbxData.vList.Add(v.Y * fbxData.multiplier.Y);
fbxData.vList.Add(v.Z * fbxData.multiplier.Z);
if (mesh.HasTextureCoords(0))
{
Vector3D uv = mesh.TextureCoordinateChannels[0][index];
fbxData.vtList.Add(uv.X);
fbxData.vtList.Add(1 - uv.Y);
}
if (mesh.HasNormals)
{
Vector3D n = mesh.Normals[index];
fbxData.vnList.Add(n.X);
fbxData.vnList.Add(n.Y);
fbxData.vnList.Add(n.Z);
}
if (mesh.HasBones)
{
float[] bonesMapping = { -1, -1, -1, -1 };
float[] bonesWeight = { -1, -1, -1, -1 };
if (fbxData.bonesInfluences.ContainsKey(index))
{
for (int i = 0; i < Math.Min(fbxData.bonesInfluences[index].Count, 4); i++)
{
int boneId = mesh.Bones.IndexOf(fbxData.bonesInfluences[index][i].bone);
bonesMapping[i] = boneId;
bonesWeight[i] = fbxData.bonesInfluences[index][i].weight;
}
}
fbxData.bonesMappingList.Add(bonesMapping[0]);
fbxData.bonesMappingList.Add(bonesMapping[1]);
fbxData.bonesMappingList.Add(bonesMapping[2]);
fbxData.bonesMappingList.Add(bonesMapping[3]);
fbxData.bonesWeightList.Add(bonesWeight[0]);
fbxData.bonesWeightList.Add(bonesWeight[1]);
fbxData.bonesWeightList.Add(bonesWeight[2]);
fbxData.bonesWeightList.Add(bonesWeight[3]);
}
}
private static Mesh3 FbxToMesh3(Scene scene, Assimp.Mesh mesh, Vector3 multiplier)
{
FbxMeshData fbxData = new FbxMeshData(multiplier);
if (mesh.HasBones)
{
foreach (Bone bone in mesh.Bones)
{
foreach (VertexWeight vertexWeight in bone.VertexWeights)
{
if (!fbxData.bonesInfluences.ContainsKey(vertexWeight.VertexID))
{
fbxData.bonesInfluences[vertexWeight.VertexID] = new List <FbxBoneInfluence>();
}
fbxData.bonesInfluences[vertexWeight.VertexID].Add(new FbxBoneInfluence()
{
bone = bone, weight = vertexWeight.Weight
});
}
}
}
foreach (Face face in mesh.Faces)
{
if (face.IndexCount == 3 || face.IndexCount == 4)
{
for (int i = 0; i < 3; i++)
{
FbxIndexToFloatList(i, mesh, face, fbxData);
}
// manage quads
if (face.IndexCount == 4)
{
FbxIndexToFloatList(3, mesh, face, fbxData);
FbxIndexToFloatList(0, mesh, face, fbxData);
FbxIndexToFloatList(2, mesh, face, fbxData);
}
}
else
{
throw new FbxLoader.InvalidPolygon();
}
}
Aiv.Fast3D.Mesh3 mesh3 = new Mesh3();
mesh3.v = fbxData.vList.ToArray();
mesh3.uv = fbxData.vtList.ToArray();
mesh3.vn = fbxData.vnList.ToArray();
if (fbxData.bonesMappingList.Count > 0)
{
mesh3.bonesMapping = fbxData.bonesMappingList.ToArray();
}
if (fbxData.bonesWeightList.Count > 0)
{
mesh3.bonesWeight = fbxData.bonesWeightList.ToArray();
}
mesh3.Update();
mesh3.UpdateNormals();
mesh3.UpdateBones();
if (mesh.HasBones)
{
for (int i = 0; i < mesh.BoneCount; i++)
{
Mesh3.Bone newBone = mesh3.AddBone(i, mesh.Bones[i].Name);
//Assimp.Matrix4x4 rootMatrix = scene.RootNode.Transform;
//rootMatrix.Inverse();
//Assimp.Matrix4x4 nodeMatrix = scene.RootNode.FindNode(mesh.Bones[i].Name).Transform;
//Assimp.Matrix4x4 m = rootMatrix * nodeMatrix * mesh.Bones[i].OffsetMatrix;
//Assimp.Matrix4x4 m = rootMatrix;
//m.Inverse();
//newBone.rootMatrix = new OpenTK.Matrix4(m.A1, m.A2, m.A3, m.A4, m.B1, m.B2, m.B3, m.B4, m.C1, m.C2, m.C3, m.C4, m.D1, m.D2, m.D3, m.D4);
//newBone.rootMatrix = new OpenTK.Matrix4(m.A1, m.B1, m.C1, m.D1, m.A2, m.B2, m.C2, m.D2, m.A3, m.B3, m.C3, m.D3, m.A4, m.B4, m.C4, m.D4);
//m = nodeMatrix;
//m = mesh.Bones[i].OffsetMatrix * nodeMatrix;
Assimp.Matrix4x4 m = mesh.Bones[i].OffsetMatrix;
//m.Inverse();
//newBone.BaseMatrix = new OpenTK.Matrix4(m.A1, m.A2, m.A3, m.A4, m.B1, m.B2, m.B3, m.B4, m.C1, m.C2, m.C3, m.C4, m.D1, m.D2, m.D3, m.D4);
newBone.BaseMatrix = new OpenTK.Matrix4(m.A1, m.B1, m.C1, m.D1, m.A2, m.B2, m.C2, m.D2, m.A3, m.B3, m.C3, m.D3, m.A4, m.B4, m.C4, m.D4);
}
Console.WriteLine("Bones count = " + mesh3.BonesCount);
// fixup bones
FixBoneParenting(scene.RootNode, mesh3, null);
}
return(mesh3);
}