/// <summary>
/// Attempt to calculate the UV transform for a face. In cases where the face is auto unwrapped
/// (manualUV = false), this returns the offset, rotation, and scale from <see cref="Face.uv"/>. If the face is
/// manually unwrapped, a transform will be calculated by trying to match an unmodified planar projection to the
/// current UVs. The results
/// </summary>
/// <returns></returns>
internal static UVTransform GetUVTransform(ProBuilderMesh mesh, Face face)
{
Projection.PlanarProject(mesh.positionsInternal, face.indexesInternal, Math.Normal(mesh, face), s_UVTransformProjectionBuffer);
return(CalculateDelta(mesh.texturesInternal, face.indexesInternal, s_UVTransformProjectionBuffer, null));
}
internal static void Project(ProBuilderMesh mesh, Face face)
{
Projection.PlanarProject(mesh, face);
ApplyUVSettings(mesh.texturesInternal, face.distinctIndexesInternal, face.uv);
}
internal static void Unwrap(ProBuilderMesh mesh, Face face, Vector3 projection = default)
{
Projection.PlanarProject(mesh, face, projection != Vector3.zero? projection : Vector3.zero);
ApplyUVSettings(mesh.texturesInternal, face.distinctIndexesInternal, face.uv);
}