// Compute per-face normals but store them per-vertex
static void CalculateNormalForFace(VertexInfo[] vertices, RangeI indexRange, bool normalize)
{
if (indexRange.Size < 3)
{
for (int i = indexRange.Minimum; i < indexRange.Maximum; i++)
{
vertices[i].Vertex.Normal = new Vector3F(Single.NaN, Single.NaN, Single.NaN);
}
FbxImportLog.LogWarning("To calculate the tangents a polygon must have > 2 vertices");
}
ref Vector3F p0 = ref vertices[indexRange.Minimum].Vertex.Position;
static void CalculateTangentForFace(VertexInfo[] vertices, RangeI indexRange, Vector3F[] tangents, Vector3F[] bitangents, GetTextureCoord getTextureCoord = null)
{
// triangle or polygon... we always use only the first three indices. A polygon
// is supposed to be planar anyways....
if (indexRange.Size < 3)
{
for (int i = indexRange.Minimum; i < indexRange.Maximum; i++)
{
tangents[i] = new Vector3F(float.NaN, float.NaN, float.NaN);
bitangents[i] = new Vector3F(float.NaN, float.NaN, float.NaN);
}
FbxImportLog.LogWarning("To calculate the tangents a polygon must have > 2 vertices");
return;
}
ref StandardVertex pt0 = ref vertices[indexRange.Minimum].Vertex;
static void ReadColor(MeshData data)
{
FbxLayerElementVertexColor pVertexColors = data.Mesh.GetElementVertexColor();
if (pVertexColors == null)
{
for (int i = 0; i < data.Vertices.Length; i++)
{
data.Vertices[i].Vertex.Color = new ColorValue(1, 1, 1);
}
return;
}
var mappingMode = pVertexColors.GetMappingMode();
if (!CheckPolygonVertexOrControlPoint(mappingMode))
{
FbxImportLog.LogWarning(data.Node, $"has unsupported VertexColors mapping mode: {pVertexColors.GetMappingMode()}");
return;
}
data.VertexComponents |= StandardVertex.Components.Color;
var indexArray = pVertexColors.GetReferenceMode() != FbxLayerElement.EReferenceMode.eDirect ? pVertexColors.GetIndexArray() : null;
var directArray = pVertexColors.GetDirectArray();
for (int i = 0; i < data.Vertices.Length; i++)
{
ref VertexInfo vertex = ref data.Vertices[i];
FbxColor color = null;
switch (pVertexColors.GetMappingMode())
{
case FbxLayerElement.EMappingMode.eByPolygonVertex:
color = directArray.GetAt(indexArray?.GetAt(vertex.PolygonVertexIndex) ?? vertex.PolygonVertexIndex);
break;
case FbxLayerElement.EMappingMode.eByControlPoint:
color = directArray.GetAt(indexArray?.GetAt(vertex.ControlPointIndex) ?? vertex.ControlPointIndex);
break;
}
data.Vertices[i].Vertex.Color = color?.ToColorValue() ?? new ColorValue(1, 1, 1);
}