private static IEnumerable <Schema2.MeshPrimitive> GetValidPrimitives(Schema2.Mesh srcMesh)
{
foreach (var srcPrim in srcMesh.Primitives)
{
var ppp = srcPrim.GetVertexAccessor("POSITION");
if (ppp.Count < 3)
{
continue;
}
if (srcPrim.DrawPrimitiveType == Schema2.PrimitiveType.POINTS)
{
continue;
}
if (srcPrim.DrawPrimitiveType == Schema2.PrimitiveType.LINES)
{
continue;
}
if (srcPrim.DrawPrimitiveType == Schema2.PrimitiveType.LINE_LOOP)
{
continue;
}
if (srcPrim.DrawPrimitiveType == Schema2.PrimitiveType.LINE_STRIP)
{
continue;
}
yield return(srcPrim);
}
}
public ModelMesh CreateMesh(Schema2.Mesh srcMesh, int maxBones = 72)
{
if (_Device == null)
{
throw new InvalidOperationException();
}
var srcPrims = GetValidPrimitives(srcMesh).ToList();
var dstMesh = new ModelMesh(_Device, Enumerable.Range(0, srcPrims.Count).Select(item => new ModelMeshPart()).ToList());
dstMesh.Name = srcMesh.Name;
dstMesh.BoundingSphere = srcMesh.CreateBoundingSphere();
var srcNormals = new MeshNormalsFallback(srcMesh);
var idx = 0;
foreach (var srcPrim in srcPrims)
{
CreateMeshPart(dstMesh.MeshParts[idx++], srcPrim, srcNormals, maxBones);
}
return(dstMesh);
}
public MeshNormalsFallback(Schema2.Mesh mesh)
{
foreach (var srcPrim in mesh.Primitives)
{
var accessor = srcPrim.GetVertexAccessor("POSITION");
if (accessor == null)
{
continue;
}
var positions = accessor.AsVector3Array();
foreach (var srcTri in srcPrim.GetTriangleIndices())
{
var a = positions[srcTri.A];
var b = positions[srcTri.B];
var c = positions[srcTri.C];
var d = XYZ.Cross(b - a, c - a);
AddWeightedNormal(a, d);
AddWeightedNormal(b, d);
AddWeightedNormal(c, d);
}
}
}
internal MeshReport(Schema2.Mesh mesh)
{
Name = mesh.Name;
_Primitives = mesh.Primitives
.Select(prim => new PrimitiveReport(prim))
.ToArray();
this.SetFrom(_Primitives);
}
public static BoundingSphere CreateBoundingSphere(this Schema2.Mesh mesh)
{
var points = mesh
.Primitives
.Select(item => item.GetVertexAccessor("POSITION"))
.Where(item => item != null)
.SelectMany(item => item.AsVector3Array())
.Select(item => item.ToXna());
return(BoundingSphere.CreateFromPoints(points));
}
public _MeshDecoder(Schema2.Mesh srcMesh, RuntimeOptions options)
{
Guard.NotNull(srcMesh, nameof(srcMesh));
_Name = srcMesh.Name;
_Extras = RuntimeOptions.ConvertExtras(srcMesh, options);
_LogicalIndex = srcMesh.LogicalIndex;
_Primitives = srcMesh
.Primitives
.Select(item => new _MeshPrimitiveDecoder <TMaterial>(item))
.ToArray();
}
public _MeshDecoder(Schema2.Mesh srcMesh)
{
Guard.NotNull(srcMesh, nameof(srcMesh));
_Name = srcMesh.Name;
_LogicalIndex = srcMesh.LogicalIndex;
_Primitives = srcMesh
.Primitives
.Select(item => new _MeshPrimitiveDecoder <TMaterial>(item))
.ToArray();
_Extras = srcMesh.Extras;
}