MeshNode2T.hh

#pragma once
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//=============================================================================
//
//  CLASS MeshNodeT
//
//=============================================================================

//== INCLUDES =================================================================



#include "BaseNode.hh"
#include <vector>
#include <ACG/GL/DrawMesh.hh>
#include <ACG/ShaderUtils/GLSLShader.hh>
#include <OpenMesh/Core/Mesh/DefaultTriMesh.hh>
#include <OpenMesh/Core/Mesh/DefaultPolyMesh.hh>

//== NAMESPACES ===============================================================


namespace ACG {
namespace SceneGraph {


//== CLASS DEFINITION =========================================================


class ACGDLLEXPORT MeshNodeBase : public BaseNode {
    protected:
        MeshNodeBase(BaseNode* _parent, std::string _name);

        void supplyDrawMesh(DrawMeshBase *drawMeshBase);

    public:
        void updatePolyEdgeBuf();

    protected:

      DrawMeshBase *drawMeshBase_;

      // poly edge buffer used for wireframe/hiddenline rendering with barycentric interpolation in geometry shader
      GLuint polyEdgeBuf_;

      // size in bytes of the poly edge buffer
      int polyEdgeBufSize_;

      // texture object for polyEdgeBuf
      GLuint polyEdgeBufTex_;
};



template <class Mesh>
class MeshNodeT : public MeshNodeBase
{
public:
  ACG_CLASSNAME(MeshNode);

  MeshNodeT(      Mesh&         _mesh,
                  BaseNode*     _parent=0,
            const std::string&  _name="<MeshNode>" );

  virtual ~MeshNodeT();
  
  
  void update_geometry();
  
  void update_topology();  

  void update_color();
  
  void update_textures();

private:

  typedef typename Mesh::Point         Point;
  typedef typename Point::value_type   PointScalar;
  typedef typename Mesh::Normal        Normal;
  typedef typename Normal::value_type  NormalScalar;
  typedef typename Mesh::Color         Color;
  typedef typename Color::value_type   ColorScalar;
  
//===========================================================================
//===========================================================================  
  
public:
  
  const Mesh& mesh() const { return mesh_; }
  
private:  
  Mesh& mesh_;  
  
//===========================================================================
//===========================================================================  
private:
  DrawMeshT<Mesh>* drawMesh_;

//===========================================================================
//===========================================================================  

public:  
  
  void boundingBox(Vec3d& _bbMin, Vec3d& _bbMax) override;
  
private:
  
  Vec3d bbMin_;
  
  Vec3d bbMax_;
  
//===========================================================================
//===========================================================================

public:
  bool normalsEnabled() { return enableNormals_; };
  
  void enableNormals(bool _enable) { enableNormals_ = _enable; };

private:
  
  bool enableNormals_;

//===========================================================================
//===========================================================================  
public:
  bool colorsEnabled() { return enableColors_; };
  
  void enableColors(bool _enable) { enableColors_ = _enable; };

private:
  
  bool enableColors_;

//===========================================================================
//===========================================================================

public:
  
  void enable_arrays(unsigned int _arrays);    

private:
  
  enum ArrayType
  {
    NONE                             = 0,
    PER_EDGE_VERTEX_ARRAY            = 1,
    PER_EDGE_COLOR_ARRAY             = 2,
    PER_HALFEDGE_VERTEX_ARRAY        = 4,
    PER_HALFEDGE_COLOR_ARRAY         = 8
  };
  
  unsigned int enabled_arrays_;
  

//===========================================================================
//===========================================================================
  
public:
  void draw(GLState& _state, const DrawModes::DrawMode& _drawMode) override;

  void getRenderObjects(IRenderer* _renderer, GLState& _state, const DrawModes::DrawMode& _drawMode, const Material* _mat) override;


  DrawMeshT<Mesh>* getDrawMesh();


  ACG::SceneGraph::DrawModes::DrawMode  availableDrawModes() const override;
  
private:
  
  inline void draw_vertices();

  inline void add_point_RenderObjects(IRenderer* _renderer, const RenderObject* _baseObj);

  inline void draw_lines();

  inline void draw_halfedges();

  
  void draw_faces();

  void add_face_RenderObjects(IRenderer* _renderer, const RenderObject* _baseObj, bool _nonindexed = false);
  
private:
  
  VertexDeclaration halfedgeDecl;
//===========================================================================
//===========================================================================
public:
  void pick(GLState& _state, PickTarget _target) override;

//===========================================================================
//===========================================================================  
  
private:

  void pick_vertices(GLState& _state, bool _front = false);
  
  bool updateVertexPicking_;

  size_t vertexPickingBaseIndex_;

//===========================================================================
//=========================================================================== 


private:
  void pick_edges(GLState& _state, bool _front = false);  
  
  bool updateEdgePicking_;
  
  size_t edgePickingBaseIndex_;


//===========================================================================
//=========================================================================== 


private:  
  void pick_faces(GLState& _state);
  
  bool updateFacePicking_;
  
  size_t facePickingBaseIndex_;


//===========================================================================
//=========================================================================== 
  
private:  
  
  void pick_any(GLState& _state);  
  
  bool updateAnyPicking_;
  
  size_t anyPickingBaseIndex_;
  
//===========================================================================
//=========================================================================== 
public:
  void setIndexPropertyName( std::string _indexPropertyName );
  
  const std::string& indexPropertyName() const;
  
  
  void setHalfedgeTextcoordPropertyName( std::string _halfedgeTextcoordPropertyName );
  
  public:
    
    void setTextureMap( std::map< int, GLuint>* _map){ textureMap_ = _map; };
  
private:
  
  bool perFaceTextureIndexAvailable_;
  
  std::map< int, GLuint>* textureMap_;

  
public:  
  void set_property_map( std::map< int, std::string>* _map){ };  
    

  unsigned int getMemoryUsage();
  
private:
  bool draw_with_offset_;

public:
  void set_offset(bool enable) { draw_with_offset_ = enable; }
};

// defined in MeshNode2T_impl.cc:
extern template class MeshNodeT<::OpenMesh::TriMesh>;
extern template class MeshNodeT<::OpenMesh::PolyMesh>;

//=============================================================================
} // namespace SceneGraph
} // namespace ACG
//=============================================================================