internal MeshTemplate(IGeometryModel model, IGeometryMesh mesh)
{
submeshCount = mesh.Submeshes.Count;
matIndex = new int[submeshCount];
submeshes = new Helix.MeshGeometry3D[submeshCount];
var texMatrix = SharpDX.Matrix.Identity;
var boundsMatrix = SharpDX.Matrix.Identity;
if (mesh.BoundsIndex >= 0)
{
var bounds = model.Bounds[mesh.BoundsIndex.Value];
boundsMatrix = bounds.ToMatrix3();
texMatrix = bounds.ToMatrix2();
}
for (int i = 0; i < submeshCount; i++)
{
var sub = mesh.Submeshes[i];
matIndex[i] = sub.MaterialIndex;
var subIndices = mesh.Indicies.Skip(sub.IndexStart).Take(sub.IndexLength).ToList();
if (mesh.IndexFormat == IndexFormat.TriangleStrip)
{
subIndices = subIndices.Unstrip().ToList();
}
var vertStart = subIndices.Min();
var vertLength = subIndices.Max() - vertStart + 1;
var subVerts = mesh.Vertices.Skip(vertStart).Take(vertLength);
IEnumerable <SharpDX.Vector3> subPositions;
if (boundsMatrix.IsIdentity)
{
subPositions = subVerts.Select(v => v.Position[0].ToVector3());
}
else
{
subPositions = subVerts.Select(v => SharpDX.Vector3.TransformCoordinate(v.Position[0].ToVector3(), boundsMatrix));
}
IEnumerable <SharpDX.Vector2> subTexcoords;
if (texMatrix.IsIdentity)
{
subTexcoords = subVerts.Select(v => v.TexCoords[0].ToVector2());
}
else
{
subTexcoords = subVerts.Select(v => SharpDX.Vector2.TransformCoordinate(v.TexCoords[0].ToVector2(), texMatrix));
}
submeshes[i] = new Helix.MeshGeometry3D
{
Indices = new Helix.IntCollection(subIndices.Select(j => j - vertStart)),
Positions = new Helix.Vector3Collection(subPositions),
TextureCoordinates = new Helix.Vector2Collection(subTexcoords)
};
if (mesh.Vertices[0].Normal.Count > 0)
{
var subNormals = subVerts.Select(v => new SharpDX.Vector3(v.Normal[0].X, v.Normal[0].Y, v.Normal[0].Z));
submeshes[i].Normals = new Helix.Vector3Collection(subNormals);
}
submeshes[i].UpdateOctree();
}
}
internal InstancedMeshTemplate(IGeometryModel model, IGeometryMesh mesh)
: base(model, mesh)
{
rootMeshes = new Helix.InstancingMeshGeometryModel3D[submeshCount];
}