lvert_strip.H

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/**********************************************************************
 * lvert_strip.H:
 **********************************************************************/
#ifndef LVERT_STRIP_H_IS_INCLUDED
#define LVERT_STRIP_H_IS_INCLUDED

#include "vert_strip.H"         // base class
#include "lface.H"              // subdivision faces, edges, verts

/**********************************************************************
 * LvertStrip:
 *
 *      Vertex strip class for LMESHs (subdivision meshes).
 *
 *      A vertex strip in the control mesh corresponds to a vertex
 *      strip with the same number of vertices in the next-level
 *      subdivision mesh.
 **********************************************************************/
#define CLvertStrip const LvertStrip
class LvertStrip : public VertStrip {
 public:
   //******** MANAGERS ********
   LvertStrip() : _substrip(0) {}
   virtual ~LvertStrip() { delete_substrip(); }

   void clear_subdivision(int level);

   Lvert* lv(int i) const { return (Lvert*)_verts[i]; }

   //******** BUILDING ********
   virtual void reset() { delete_substrip(); VertStrip::reset(); }

   //******** DRAWING ********
   virtual void draw(StripCB* cb) { draw(cur_level(), cb); }

 protected:
   //******** MEMBER DATA ********
   LvertStrip*  _substrip;  // corresponding finer-level vert strip

   //******** MANAGING SUBSTRIP ********
   void delete_substrip() { delete _substrip; _substrip = 0;}
   void generate_substrip();
   int  cur_level() const;

   //******** DRAWING (INTERNAL) ********
   void draw(int level, StripCB* cb);
};

#endif // LVERT_STRIP_H_IS_INCLUDED

/* end of file lvert_strip.H */

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