optimizations.h

   1 // Copyright 2002, 2003, 2004 David Hilvert <dhilvert@auricle.dyndns.org>,
   2 //                                          <dhilvert@ugcs.caltech.edu>
   3
   4 /*  This file is part of the Anti-Lamenessing Engine.
   5
   6     The Anti-Lamenessing Engine is free software; you can redistribute it and/or modify
   7     it under the terms of the GNU General Public License as published by
   8     the Free Software Foundation; either version 2 of the License, or
   9     (at your option) any later version.
  10
  11     The Anti-Lamenessing Engine is distributed in the hope that it will be useful,
  12     but WITHOUT ANY WARRANTY; without even the implied warranty of
  13     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14     GNU General Public License for more details.
  15
  16     You should have received a copy of the GNU General Public License
  17     along with the Anti-Lamenessing Engine; if not, write to the Free Software
  18     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19 */
  20
  21 #ifndef __optimizations_h__
  22 #define __optimizations_h__
  23
  24 /*
  25  * Class for implementing certain optimizations
  26  */
  27
  28 class optimizations {
  29 public:
  30
  31         /*
  32          * Get the initial Irani-Peleg approximation.
  33          */
  34         static d2::image *get_ip_working_image(const d2::image *im) {
  35                 d2::image *result = im->clone("IPC Approximation");
  36
  37 #if OPTIMIZATIONS == 1
  38                 /*
  39                  * Reduce the extents of the source.  (We might not be able to
  40                  * delete it, since deletion might be performed by
  41                  * begin_3d_work().)
  42                  */
  43                 d2::image *im_noconst = (d2::image *) im;
  44                 im_noconst->extend(0, 1 - im->height(), 0, 1 - im->width());
  45 #endif
  46
  47                 return result;
  48         }
  49
  50         /*
  51          * When starting work on the 3D scene, get rid of memory allocated
  52          * for 2D rendering chains.
  53          */
  54         static void begin_3d_work() {
  55 #if OPTIMIZATIONS == 1
  56                 d2::render::free_all_memory();
  57 #endif
  58         }
  59 };
  60
  61
  62 #endif