Mesh.h

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/*

             *
            ***
           *****
   *********************       Mercenaries Engineering SARL
     *****************              Copyright (C) 2018
       *************
         *********        http://www.mercenaries-engineering.com
        ***********
       ****     ****
      **           **

*/
#pragma once

#include "Points.h"
#include "SpanSpan.h"

  namespace maquina
  {

    class MAQUINA_EXPORT Mesh : public Points
    {
    public:
      Mesh();


      Mesh(
        const BufferConstV3f& points,      
        const BufferConstUInt32& indices,  
        const BufferConstUInt32& offsets   
        );


      Mesh(const Value &v);

      SpanSpan<const uint32_t, const uint32_t> position_topology() const;
      SpanSpan< const uint32_t, const uint32_t > vertex_to_faces() const;
      SpanSpan< const uint32_t, const uint32_t > vertex_to_edges() const;
      SpanSpan< const uint32_t, const uint32_t > edges_to_faces() const;
      SpanSpan< const uint32_t, const uint32_t > adjacent_vertices() const;


      Mesh triangulate() const;


      void compute_triangle_indices(BufferV3i &result) const;


      void compute_triangle_face_varying_indices(BufferV3i &result) const;


      int closest_face(const Imath::V3f &p, 
                       float &max_distance,              
                       Imath::V3f* closest_pos = nullptr 
      ) const;


      Imath::V3f normal(
        int face,   
        int corner  
      ) const;

      Imath::V3f smooth_normal(int vertex) const;

      Mesh(const std::shared_ptr<Impl>& impl) { _impl=impl; }
    };
  }