GlutPrimitiveNode.hh

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//=============================================================================
//
//  CLASS GlutPrimitiveNode
//
//=============================================================================


#ifndef ACG_GLUT_PRIMITIVE_NODE_HH
#define ACG_GLUT_PRIMITIVE_NODE_HH


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


#include "BaseNode.hh"
#include "DrawModes.hh"
#include <string>

#include <ACG/GL/GLPrimitives.hh>


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

namespace ACG {
namespace SceneGraph {


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


class ACGDLLEXPORT GlutPrimitiveNode : public BaseNode
{

public:

  enum GlutPrimitiveType
  {
    CONE=0, 
    CUBE, 
    DODECAHEDRON, 
    ICOSAHEDRON, 
    OCTAHEDRON, 
    SPHERE, 
    TETRAHEDRON, 
    TORUS
  }; 

  
  struct Primitive
  {
    Vec3d position; // position
    Vec3d axis;    // direction / axis vector

    GlutPrimitiveType type;    // glut primitive type
    
    ACG::Vec4f color; // color
    
    // glut primitive resolution
    double       size;
    double       innersize; // size of inner loop for torus, height for cone
    unsigned int slices, stacks;
    
    // Constructor
    explicit Primitive(GlutPrimitiveType _t) :

        // default axis is negative z
        axis(Vec3d(0,0,1)),

        // Set the type
        type(_t),

        // set default resolution
        size(1.0),
        innersize(1.0),
        slices(20),
        stacks(20)
    {
    }

    Primitive(GlutPrimitiveType _t, Vec3d _p, Vec3d _a, ACG::Vec4f _c) :
      position(_p),
      axis(_a),
      type(_t),
      color(_c),

      // set default resolution
      size(1.0),
      innersize(1.0),
      slices(20),
      stacks(20)
    {
      
    }

    // Copy Constructor
    Primitive( const Primitive& _p)
    {
      // use defined = operator
      *this = _p;
    }

    // = operator
    Primitive& operator=(const Primitive& _p)
    {
      type      = _p.type;
      position  = _p.position;
      axis      = _p.axis;
      color     = _p.color;
      size      = _p.size;  
      innersize = _p.innersize;
      slices    = _p.slices;
      stacks    = _p.stacks;

      return *this;
    }
  };
  
  
  GlutPrimitiveNode( BaseNode*                _parent=0,
                     const std::string &      _name="<GlutPrimitive>" );


  GlutPrimitiveNode( GlutPrimitiveType        _type,
                     BaseNode*                _parent=0,
                     const std::string &      _name="<GlutPrimitive>" );


  virtual ~GlutPrimitiveNode() {
    if(sphere_)
      delete sphere_;
    if(cone_)
      delete cone_;
  }

  size_t add_primitive(GlutPrimitiveType _type, Vec3d _pos, Vec3d _axis, ACG::Vec4f _color);

  void clear(){primitives_.clear();};
  
  void set_position(const Vec3d& _p, int _idx = 0);
  const Vec3d get_position(int _idx = 0) const;

  Primitive& get_primitive(int _idx){return primitives_[_idx];};
  
  void set_size(double _s, int _idx = 0);
  double get_size(int _idx = 0) const;
  
  ACG_CLASSNAME(GlutPrimitiveNode);

  DrawModes::DrawMode availableDrawModes() const override;

  void boundingBox(Vec3d& _bbMin, Vec3d& _bbMax) override;
  
  void draw(GLState& _state, const DrawModes::DrawMode& _drawMode) override;
  void draw_obj(GLState& _state, size_t _idx) const;
  
  void pick(GLState& _state, PickTarget _target) override;
  
  void setColorInternal(bool _set) { setColor_ = _set; };

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

private:
  
  std::vector<Primitive> primitives_;
  
  bool setColor_;
  
  // Sphere rendering
  ACG::GLSphere*   sphere_;
  ACG::GLCone*   cone_;

};


//=============================================================================
} // namespace SceneGraph
} // namespace ACG
//=============================================================================
#endif // ACG_GLUT_PRIMITIVE_NODE_HH
//=============================================================================