compute_uv_orientation.h

/*
 * Copyright 2026 Adobe. All rights reserved.
 * This file is licensed to you under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License. You may obtain a copy
 * of the License at http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software distributed under
 * the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS
 * OF ANY KIND, either express or implied. See the License for the specific language
 * governing permissions and limitations under the License.
 */
#pragma once
 
#include <lagrange/SurfaceMesh.h>
 
#include <cstddef>
#include <string_view>
 
namespace lagrange {

 
struct UVOrientationOptions
{
    std::string_view uv_attribute_name = "";

    std::string_view output_attribute_name = "@uv_orientation";
};

struct UVOrientationCount
{
    size_t positive = 0; 
    size_t degenerate = 0; 
    size_t negative = 0; 
};

template <typename Scalar, typename Index>
UVOrientationCount compute_uv_orientation(
    SurfaceMesh<Scalar, Index>& mesh,
    const UVOrientationOptions& options = {});

 
} // namespace lagrange