text: /*
   * Copyright (c) 2014-2022 The Voxie Authors
   *
   * Permission is hereby granted, free of charge, to any person obtaining a copy
   * of this software and associated documentation files (the "Software"), to deal
   * in the Software without restriction, including without limitation the rights
   * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
   * copies of the Software, and to permit persons to whom the Software is
   * furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included in
   * all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
   * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
   * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
   * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
   * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
   * THE SOFTWARE.
   */
  
  #ifndef MEANNORMALFILTERING_H
  #define MEANNORMALFILTERING_H
  
  #include <VoxieClient/Array.hpp>
  #include <VoxieClient/ClaimedOperation.hpp>
  
  #include <QObject>
  
  class MeanNormalFiltering {
   public:
    MeanNormalFiltering();
    void compute(vx::Array2<float>& vertices,
                 vx::Array2<const uint32_t> triangles, int iterations,
                 vx::ClaimedOperation<
                     de::uni_stuttgart::Voxie::ExternalOperationRunFilter>& prog);
  
   private:
    QList<QVector3D> normals;
    QList<float> areas;
    QList<QVector3D> centroids;
    QList<QVector3D> m;
    QList<QVector3D> weightedNormalsPerVertex;
    QList<float> neighbouringAreasPerVertex;
    QList<QVector3D> v;
    QList<int> partOf;
  
    void calculateTriangleInfo(vx::Array2<float> vertices,
                               vx::Array2<const uint32_t> triangles);
    void executeStepOneTwo(vx::Array2<float> vertices,
                           vx::Array2<const uint32_t> triangles);
    void executeStepThree(vx::Array2<float>& vertices,
                          vx::Array2<const uint32_t> triangles);
  };
  
  #endif  // MEANNORMALFILTERING_H
  