d2/spixel.h

   1 // Copyright 2002 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 3 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 __spixel_h__
  22 #define __spixel_h__
  23
  24 /*
  25  * Structure to describe a pixel to be used in storage.
  26  */
  27
  28 class spixel {
  29 private:
  30         ale_sreal x[3];
  31
  32 public:
  33         spixel() {
  34                 x[0] = 0;
  35                 x[1] = 0;
  36                 x[2] = 0;
  37         }
  38
  39         spixel(pixel p) {
  40                 x[0] = p[0];
  41                 x[1] = p[1];
  42                 x[2] = p[2];
  43         }
  44
  45         spixel(ale_sreal x0, ale_sreal x1, ale_sreal x2) {
  46                 x[0] = x0;
  47                 x[1] = x1;
  48                 x[2] = x2;
  49         }
  50
  51         operator pixel() const {
  52                 pixel result;
  53
  54                 result[0] = x[0];
  55                 result[1] = x[1];
  56                 result[2] = x[2];
  57
  58                 return result;
  59         }
  60
  61         const ale_sreal &operator[](unsigned int i) const {
  62 #if 0
  63                 /*
  64                  * This may be expensive.
  65                  */
  66                 assert (i < 3);
  67 #endif
  68
  69                 return x[i];
  70         }
  71
  72         ale_sreal &operator[](unsigned int i) {
  73 #if 0
  74                 /*
  75                  * This may be expensive.
  76                  */
  77                 assert (i < 3);
  78 #endif
  79
  80                 return x[i];
  81         }
  82
  83         ale_sreal min_norm() const {
  84                 ale_sreal m = x[0];
  85                 if (x[1] < m)
  86                         m = x[1];
  87                 if (x[2] < m)
  88                         m = x[2];
  89
  90                 return m;
  91         }
  92
  93         spixel operator+=(pixel p) {
  94                 return spixel(x[0] += p[0], x[1] += p[1], x[2] += p[2]);
  95         }
  96
  97         spixel operator*=(pixel p) {
  98                 return spixel(x[0] *= p[0], x[1] *= p[1], x[2] *= p[2]);
  99         }
 100
 101         spixel operator*=(ale_real d) {
 102                 return spixel(x[0] *= d, x[1] *= d, x[2] *= d);
 103         }
 104
 105         spixel operator/=(pixel p) {
 106                 return spixel(x[0] /= p[0], x[1] /= p[1], x[2] /= p[2]);
 107         }
 108
 109         spixel operator/=(ale_real d) {
 110                 return spixel(x[0] /= d, x[1] /= d, x[2] /= d);
 111         }
 112 };
 113
 114 #endif