public gltfMorphTarget ToGltf(ExportingGltfData data, bool useNormal, bool useSparse)
{
return(BlendShapeExporter.Export(data,
m_positions,
useNormal ? m_normals : null,
useSparse));
}
public gltfMorphTarget ToGltf(glTF gltf, int gltfBuffer, bool useNormal, bool useSparse)
{
return(BlendShapeExporter.Export(gltf, gltfBuffer,
m_positions,
useNormal ? m_normals : null,
useSparse));
}
static gltfMorphTarget ExportMorphTarget(ExportingGltfData data,
Mesh mesh, int blendShapeIndex,
bool useSparseAccessorForMorphTarget,
bool exportOnlyBlendShapePosition,
IAxisInverter axisInverter)
{
var blendShapeVertices = mesh.vertices;
var usePosition = blendShapeVertices != null && blendShapeVertices.Length > 0;
var blendShapeNormals = mesh.normals;
var useNormal = usePosition && blendShapeNormals != null && blendShapeNormals.Length == blendShapeVertices.Length;
// var useNormal = usePosition && blendShapeNormals != null && blendShapeNormals.Length == blendShapeVertices.Length && !exportOnlyBlendShapePosition;
// var blendShapeTangents = mesh.tangents.Select(y => (Vector3)y).ToArray();
// //var useTangent = usePosition && blendShapeTangents != null && blendShapeTangents.Length == blendShapeVertices.Length;
// var useTangent = false;
var frameCount = mesh.GetBlendShapeFrameCount(blendShapeIndex);
mesh.GetBlendShapeFrameVertices(blendShapeIndex, frameCount - 1, blendShapeVertices, blendShapeNormals, null);
//
// invert axis
//
for (int i = 0; i < blendShapeVertices.Length; ++i)
{
blendShapeVertices[i] = axisInverter.InvertVector3(blendShapeVertices[i]);
}
for (int i = 0; i < blendShapeNormals.Length; ++i)
{
blendShapeNormals[i] = axisInverter.InvertVector3(blendShapeNormals[i]);
}
var positions = mesh.vertices;
for (int i = 0; i < positions.Length; ++i)
{
positions[i] = axisInverter.InvertVector3(positions[i]);
}
var normals = mesh.normals;
for (int i = 0; i < normals.Length; ++i)
{
normals[i] = axisInverter.InvertVector3(normals[i]);
}
return(BlendShapeExporter.Export(data,
blendShapeVertices,
exportOnlyBlendShapePosition && useNormal ? null : blendShapeNormals,
useSparseAccessorForMorphTarget));
}