drawable.H

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/**********************************************************************
 * drawable.H
 **********************************************************************/
#ifndef BMESH_DRAWABLE_IS_INCLUDED
#define BMESH_DRAWABLE_IS_INCLUDED

#include "disp/ref_img_client.H"

class VIEWptr;
#define CVIEWptr  const VIEWptr

/*****************************************************************
 * BMESHdrawable
 *
 *      Provides an interface for a generic thing that can draw
 *      reference images and can also draw to the screen. Base
 *      class for Patch (a region of a BMESH that can be drawn in
 *      a separate style), GTexture (a procedural "texture" that
 *      can be assigned to a Patch), and other classes that want
 *      to get in on the drawing action of a BMESH.
 *
 *  XXX - Q: can we add RefImageClient::draw(CVIEWptr&)
 *           and get rid of this class?
 *****************************************************************/
class BMESHdrawable : public RefImageClient {
 public:
   //******** MANAGERS ********
   BMESHdrawable() {}

   //******** DRAWING ********
   virtual int draw(CVIEWptr&)          = 0;
};

/*****************************************************************
 * BMESHdrawable_array:
 *
 *   An ARRAY of BMESHdrawables with convenience methods for
 *   passing calls to all the items in the ARRAY.
 *
 *   The templated BMD_array class is so you can do this with
 *   types derived from BMESHdrawable, and not be forced to work
 *   with generic pointers to the base type.
 *
 *   See disp/ref_img_client.H for a more complete explanation.
 *****************************************************************/
template <class T>
class BMD_array : public RIC_array<T> {
 public:
   //******** MANAGERS ********
   BMD_array(int n=0)                  : RIC_array<T>(n)    {}
   BMD_array(const RIC_array<T>& list) : RIC_array<T>(list) {}

   //******** CONVENIENCE ********
   int draw(CVIEWptr& v) const {
      int ret = 0;
      for (int i=0; i<num(); i++)
         ret += (*this)[i]->draw(v);
      return ret;
   }

   using RIC_array<T>::num;
};

typedef BMD_array<BMESHdrawable> BMESHdrawable_array;

#endif // BMESH_DRAWABLE_IS_INCLUDED

/* end of file drawable.H */

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