private Submesh3D ImportSubmesh(FbxSubmesh meshAttribute, FbxNode node)
{
var sm = new Submesh3D {
Mesh = new Mesh <Mesh3D.Vertex> {
Vertices = meshAttribute.Vertices,
Indices = meshAttribute.Indices.Select(index => checked ((ushort)index)).ToArray(),
AttributeLocations = new[] {
ShaderPrograms.Attributes.Pos1,
ShaderPrograms.Attributes.Color1,
ShaderPrograms.Attributes.UV1,
ShaderPrograms.Attributes.BlendIndices,
ShaderPrograms.Attributes.BlendWeights,
ShaderPrograms.Attributes.Normal,
ShaderPrograms.Attributes.Tangent
}
},
Material = meshAttribute.MaterialIndex != -1 && node.Materials != null
? GetOrCreateLimeMaterial(node.Materials[meshAttribute.MaterialIndex])
: FbxMaterial.Default
};
MeshUtils.RemoveDuplicates(sm.Mesh);
if (meshAttribute.Bones.Length > 0)
{
foreach (var bone in meshAttribute.Bones)
{
sm.BoneNames.Add(bone.Name);
sm.BoneBindPoses.Add(bone.Offset);
}
}
return(sm);
}
private static List <FbxSubmesh> ImportSubmeshes(IntPtr ptr)
{
var list = new List <FbxSubmesh>();
var mesh = FbxNodeGetMeshAttribute(ptr, WindingOrder.CW, true);
var indices = mesh.Vertices.ToStruct <SizedArray>().GetData <int>();
var controlPoints = mesh.Points.ToStruct <SizedArray>().GetData <Vec3>();
var weights = mesh.Weigths.ToStruct <SizedArray>().GetData <WeightData>();
var boneData = mesh.Bones.ToStruct <SizedArray>().GetData <BoneData>();
var colorsContainer = mesh.Colors.ToStruct <Element>();
var normalsContainer = mesh.Normals.ToStruct <Element>();
var uvContainer = mesh.UV.ToStruct <Element>();
var colors = colorsContainer.GetData <Vec4>();
var normals = normalsContainer.GetData <Vec3>();
var uv = uvContainer.GetData <Vec2>();
var size = ushort.MaxValue;
var count = indices.Length / size;
var bones = new FbxBone[boneData.Length];
for (var i = 0; i < boneData.Length; i++)
{
bones[i] = new FbxBone {
Name = boneData[i].Name,
Offset = boneData[i].OffsetMatrix.ToStruct <Mat4x4>().ToLime()
};
}
for (var i = 0; i <= count; i++)
{
var newSize = i == count ? indices.Length - (size * count) : size;
var submesh = new FbxSubmesh {
MaterialIndex = mesh.MaterialIndex,
Indices = new int[newSize],
Vertices = new Mesh3D.Vertex[newSize],
Normals = new Vector3[newSize],
Bones = bones.ToArray(),
};
for (var j = 0; j < submesh.Vertices.Length; j++)
{
var index = i * size + j;
var controlPointIndex = indices[index];
var controlPoint = controlPoints[controlPointIndex];
submesh.Indices[j] = j;
submesh.Vertices[j].Pos = controlPoint.ToLime();
if (colorsContainer.Size != 0 && colorsContainer.Mode != ReferenceMode.None)
{
submesh.Vertices[j].Color = colorsContainer.Mode == ReferenceMode.ControlPoint ?
colors[controlPointIndex].ToLimeColor() : colors[index].ToLimeColor();
}
else
{
submesh.Vertices[j].Color = Color4.White;
}
if (normalsContainer.Size != 0 && normalsContainer.Mode != ReferenceMode.None)
{
submesh.Vertices[j].Normal = normalsContainer.Mode == ReferenceMode.ControlPoint ?
normals[controlPointIndex].ToLime() : normals[index].ToLime();
}
if (uvContainer.Size != 0 && uvContainer.Mode != ReferenceMode.None)
{
submesh.Vertices[j].UV1 = normalsContainer.Mode == ReferenceMode.ControlPoint ?
uv[controlPointIndex].ToLime() : uv[index].ToLime();
submesh.Vertices[j].UV1.Y = 1 - submesh.Vertices[j].UV1.Y;
}
if (weights.Length == 0)
{
continue;
}
byte idx;
float weight;
var weightData = weights[controlPointIndex];
for (var k = 0; k < ImportConfig.BoneLimit; k++)
{
if (weightData.Weights[k] == NoWeight)
{
continue;
}
idx = weightData.Indices[k];
weight = weightData.Weights[k];
switch (k)
{
case 0:
submesh.Vertices[j].BlendIndices.Index0 = idx;
submesh.Vertices[j].BlendWeights.Weight0 = weight;
break;
case 1:
submesh.Vertices[j].BlendIndices.Index1 = idx;
submesh.Vertices[j].BlendWeights.Weight1 = weight;
break;
case 2:
submesh.Vertices[j].BlendIndices.Index2 = idx;
submesh.Vertices[j].BlendWeights.Weight2 = weight;
break;
case 3:
submesh.Vertices[j].BlendIndices.Index3 = idx;
submesh.Vertices[j].BlendWeights.Weight3 = weight;
break;
}
}
}
list.Add(submesh);
}
return(list);
}