texture_filtering.h

/*
 * Copyright 2025 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 <lagrange/image/View3D.h>
 
#include <optional>
#include <string_view>
#include <utility>
 
namespace lagrange::texproc {


struct FilteringOptions
{
    double value_weight = 1e3;

    double gradient_weight = 1.;

    double gradient_scale = 1.;

    unsigned int quadrature_samples = 6;

    double jitter_epsilon = 1e-4;

    double stiffness_regularization_weight = 1e-9;

    std::optional<std::pair<double, double>> clamp_to_range = std::nullopt;
};

template <typename Scalar, typename Index, typename ValueType>
void texture_filtering(
    const SurfaceMesh<Scalar, Index>& mesh,
    image::experimental::View3D<ValueType> texture,
    const FilteringOptions& options = {});

 
} // namespace lagrange::texproc