protected void TransformAttributes(ref Dictionary <string, AttributeAccessor> attributeAccessors)
{
// Flip vectors and triangles to the Unity coordinate system.
if (attributeAccessors.ContainsKey(SemanticProperties.POSITION))
{
AttributeAccessor attributeAccessor = attributeAccessors[SemanticProperties.POSITION];
SchemaExtensions.ConvertVector3CoordinateSpace(ref attributeAccessor, SchemaExtensions.CoordinateSpaceConversionScale);
}
if (attributeAccessors.ContainsKey(SemanticProperties.INDICES))
{
AttributeAccessor attributeAccessor = attributeAccessors[SemanticProperties.INDICES];
SchemaExtensions.FlipFaces(ref attributeAccessor);
}
if (attributeAccessors.ContainsKey(SemanticProperties.NORMAL))
{
AttributeAccessor attributeAccessor = attributeAccessors[SemanticProperties.NORMAL];
SchemaExtensions.ConvertVector3CoordinateSpace(ref attributeAccessor, SchemaExtensions.CoordinateSpaceConversionScale);
}
// TexCoord goes from 0 to 3 to match GLTFHelpers.BuildMeshAttributes
for (int i = 0; i < 4; i++)
{
if (attributeAccessors.ContainsKey(SemanticProperties.TexCoord(i)))
{
AttributeAccessor attributeAccessor = attributeAccessors[SemanticProperties.TexCoord(i)];
SchemaExtensions.FlipTexCoordArrayV(ref attributeAccessor);
}
}
if (attributeAccessors.ContainsKey(SemanticProperties.TANGENT))
{
AttributeAccessor attributeAccessor = attributeAccessors[SemanticProperties.TANGENT];
SchemaExtensions.ConvertVector4CoordinateSpace(ref attributeAccessor, SchemaExtensions.TangentSpaceConversionScale);
}
}