public Submesh3DCollection Clone(Mesh3D owner)
{
var clone = new Submesh3DCollection(owner);
for (int i = 0; i < Count; i++)
{
clone.Add(this[i].Clone());
}
return(clone);
}
private static bool IsAnyBoneAffectOnMesh(Mesh3D mesh)
{
foreach (var submesh in mesh.Submeshes)
{
if (submesh.BoneNames.Any())
{
return(true);
}
}
return(false);
}
private int CalcHashForMesh(Mesh3D mesh)
{
int hashCode;
unchecked {
hashCode = mesh.Opaque.GetHashCode() +
17 * mesh.CullMode.GetHashCode() +
19 * mesh.HitTestTarget.GetHashCode() +
23 * mesh.SkinningMode.GetHashCode();
}
return(hashCode);
}
private void MergeMeshes(Dictionary <int, List <Mesh3D> > map, Node3D model)
{
const int meshLimit = ushort.MaxValue;
const int bonesLimit = 50;
if (map.Count == 0)
{
return;
}
foreach (var pair in map)
{
var materialsMap = new Dictionary <IMaterial, Dictionary <Mesh3D, List <Submesh3D> > >();
foreach (var mesh in pair.Value)
{
foreach (var submesh in mesh.Submeshes)
{
var material = submesh.Material;
if (!materialsMap.ContainsKey(material))
{
materialsMap[material] = new Dictionary <Mesh3D, List <Submesh3D> >();
}
if (!materialsMap[material].ContainsKey(mesh))
{
materialsMap[material][mesh] = new List <Submesh3D>();
}
materialsMap[material][mesh].Add(submesh);
}
}
foreach (var meshDescriptor in materialsMap.Values)
{
var first = meshDescriptor.First().Key;
var newMesh = new Mesh3D {
Opaque = first.Opaque,
CullMode = first.CullMode,
SkinningMode = first.SkinningMode,
HitTestTarget = first.HitTestTarget
};
Submesh3D curSubmesh = null;
foreach (var meshAndSubmeshes in meshDescriptor)
{
var meshIdx = 0;
while (meshIdx < meshAndSubmeshes.Value.Count)
{
var submeshToMerge = meshAndSubmeshes.Value[meshIdx];
var meshLocalTransform = meshAndSubmeshes.Key.LocalTransform;
MeshUtils.TransformVertices(submeshToMerge.Mesh, (ref Mesh3D.Vertex v) => {
v.Pos = meshLocalTransform.TransformVector(v.Pos);
});
if (curSubmesh == null)
{
curSubmesh = submeshToMerge;
meshAndSubmeshes.Value.RemoveAt(meshIdx);
meshIdx++;
continue;
}
if (curSubmesh.Mesh.Indices.Length + submeshToMerge.Mesh.Indices.Length < meshLimit &&
curSubmesh.BoneNames.Count + submeshToMerge.BoneNames.Count < bonesLimit
)
{
curSubmesh = Combine(curSubmesh, submeshToMerge);
meshAndSubmeshes.Value.RemoveAt(meshIdx);
}
else
{
newMesh.Submeshes.Add(curSubmesh);
curSubmesh = null;
}
}
newMesh.Id += (newMesh.Id == null ? "" : "|") + meshAndSubmeshes.Key.Id;
}
newMesh.Submeshes.Add(curSubmesh);
model.AddNode(newMesh);
}
foreach (var mesh in materialsMap.Values.SelectMany(kv => kv.Keys))
{
mesh.UnlinkAndDispose();
}
}
}
public Submesh3DCollection(Mesh3D owner)
{
this.owner = owner;
}