public void GenerateNormalsAndTangents()
{
if (_Primitives.Length == 0)
{
return;
}
var geometries = _Primitives.Select(item => item._Geometry);
// we can only skip normals and tangents calculation if all the
// primitives have them. If we get a case in wich some primitives
// have normals and other not, we need to calculate the normals
// for all of them because there's vertex adyacencies shared
// between primitives.
var hasNormals = geometries.All(item => item.HasNormals);
var hasTangents = geometries.All(item => item.HasTangents);
if (!hasNormals)
{
VertexNormalsFactory.CalculateSmoothNormals(geometries);
}
if (!hasTangents)
{
VertexTangentsFactory.CalculateTangents(geometries);
}
var morphTargetsCount = _Primitives.Min(item => item.MorphTargetsCount);
for (int i = 0; i < morphTargetsCount; ++i)
{
var targets = _Primitives.Select(item => item._MorphTargets[i]);
hasNormals = targets.All(item => item.HasNormals);
hasTangents = targets.All(item => item.HasTangents);
if (!hasNormals)
{
VertexNormalsFactory.CalculateSmoothNormals(targets);
}
if (!hasTangents)
{
VertexTangentsFactory.CalculateTangents(targets);
}
}
}
internal void _WriteMesh(SRCMESH srcMesh)
{
if (_Device == null)
{
throw new InvalidOperationException();
}
var srcPrims = _GetValidPrimitives(srcMesh)
.ToDictionary(item => item, item => new MeshPrimitiveReader(item, item.Material?.DoubleSided ?? false));
VertexNormalsFactory.CalculateSmoothNormals(srcPrims.Values.ToList());
VertexTangentsFactory.CalculateTangents(srcPrims.Values.ToList());
foreach (var srcPrim in srcPrims)
{
_CurrentMeshIndex = srcMesh.LogicalIndex;
_WriteMeshPrimitive(srcPrim.Value, srcPrim.Key.Material);
}
}
public void GenerateNormalsAndTangents()
{
if (_Primitives.Length == 0)
{
return;
}
var geometries = _Primitives.Select(item => item._Geometry);
VertexNormalsFactory.CalculateSmoothNormals(geometries);
VertexTangentsFactory.CalculateTangents(geometries);
var morphTargetsCount = _Primitives.Min(item => item.MorphTargetsCount);
for (int i = 0; i < morphTargetsCount; ++i)
{
var targets = _Primitives.Select(item => item._MorphTargets[i]);
VertexNormalsFactory.CalculateSmoothNormals(targets);
VertexTangentsFactory.CalculateTangents(targets);
}
}
