surface_mesh_smoothing.h

/********************************************************************
 * Copyright (C) 2020-2021 by Liangliang Nan <liangliang.nan@gmail.com>
 * Copyright (C) 2011-2020 the Polygon Mesh Processing Library developers.
 *
 * The code in this file is adapted from the PMP (Polygon Mesh Processing
 * Library) with modifications.
 *      https://github.com/pmp-library/pmp-library
 * The original code was distributed under a MIT-style license, see
 *      https://github.com/pmp-library/pmp-library/blob/master/LICENSE.txt
 ********************************************************************/
 
#ifndef EASY3D_ALGO_SURFACE_MESH_SMOOTHING_H
#define EASY3D_ALGO_SURFACE_MESH_SMOOTHING_H
 
#include <easy3d/core/surface_mesh.h>
 
namespace easy3d {

    class SurfaceMeshSmoothing {
    public:
        explicit SurfaceMeshSmoothing(SurfaceMesh *mesh);

        ~SurfaceMeshSmoothing();

        void explicit_smoothing(unsigned int iters = 10,
                                bool use_uniform_laplace = false);

        void implicit_smoothing(float timestep = 0.001,
                                bool use_uniform_laplace = false,
                                bool rescale = true);

        void initialize(bool use_uniform_laplace = false) {
            compute_edge_weights(use_uniform_laplace);
            compute_vertex_weights(use_uniform_laplace);
        }
 
    private:
        void compute_edge_weights(bool use_uniform_laplace);

        void compute_vertex_weights(bool use_uniform_laplace);
 
    private:
        SurfaceMesh *mesh_;
 
        // remember for how many edges we computed weights
        // recompute if numbers change (i.e. mesh has changed)
        unsigned int how_many_edge_weights_;
    };
 
} // namespace easy3d
 
 
#endif  // EASY3D_ALGO_SURFACE_MESH_SMOOTHING_H