key_line.H

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/**********************************************************************
 * key_line.H:
 **********************************************************************/
#ifndef KEY_LINE_H_IS_INCLUDED
#define KEY_LINE_H_IS_INCLUDED

#include "basic_texture.H"
#include "toon_texture_1D.H" 

class SolidColorTexture;
class ToonTexture_1D; //modified to use v1.3 toon shader
class SilFrameTexture;
/**********************************************************************
 * KeyLineTexture:
 *
 *    Render Patch silhouettes with a solid background color
 *
 **********************************************************************/
class KeyLineTexture : public OGLTexture {
 public:

   //******** MANAGERS ********

   KeyLineTexture(Patch* patch = 0);
   virtual ~KeyLineTexture();

   //******** RUN-TIME TYPE ID ********

   DEFINE_RTTI_METHODS3("Key Line", KeyLineTexture*, OGLTexture, CDATA_ITEM *);

   //******** STATICS ********

   // Whether to show hidden lines or not:
   static void set_show_hidden(bool show) { _show_hidden = show; }

   static bool toggle_show_hidden_lines() {
      return (_show_hidden = !_show_hidden);
   }

   //******** ACCESSORS ********

   SolidColorTexture* solidcolor() { return _solid; }
   ToonTexture_1D*    toon()       { return _toon; }
   SilFrameTexture*   sil_frame()  { return _sil_frame;  }

   virtual int set_color(CCOLOR& c);
   int set_sil_color(CCOLOR& c);

   //******** GTexture VIRTUAL METHODS ********

   virtual GTexture_list gtextures() const {
      return GTexture_list((GTexture*)_solid,
                           (GTexture*)_toon,
                           (GTexture*)_sil_frame);
   }

   virtual void draw_filled_tris(double alpha);
   virtual void draw_non_filled_tris(double alpha);

   virtual int draw(CVIEWptr& v); 

   //******** DATA_ITEM METHODS ********

   virtual DATA_ITEM  *dup() const { return new KeyLineTexture; }

 protected:
   SolidColorTexture*   _solid;         // draws filled triangles, no shading
   ToonTexture_1D*      _toon;          // toon shader, goes on top of solid color
   SilFrameTexture*     _sil_frame;     // draws silhouettes and creases

   static bool          _show_hidden;   // if true, show hidden lines (dotted)

   // Internal method for drawing the hidden lines:
   int draw_hidden(CVIEWptr& v);
};

#endif // KEY_LINE_H_IS_INCLUDED

// end of file key_line.H

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