src/wgl/rtotex/maths/color.cpp

   1 //////////////////////////////////////////////////////////////////////////////////////////
   2 //      COLOR.cpp
   3 //      function definitions for an RGBA color class
   4 //      Downloaded from: www.paulsprojects.net
   5 //      Created:        20th July 2002
   6 //      Modified:       7th November 2002       -       Some speed improvements
   7 //                                                                      -       Removed clamping after adds etc. Do it yourself!
   8 //                                                                              To enable use with floating point color buffers
   9 //                                                                      -       Corrected lerp (reversed f and 1-f)
  10 //
  11 //      Copyright (c) 2006, Paul Baker
  12 //      Distributed under the New BSD Licence. (See accompanying file License.txt or copy at
  13 //      http://www.paulsprojects.net/NewBSDLicense.txt)
  14 //////////////////////////////////////////////////////////////////////////////////////////
  15
  16 #include "maths.h"
  17
  18 void COLOR::ClampTo01()
  19 {
  20         if(r>1.0f)
  21                 r=1.0f;
  22         if(r<0.0f)
  23                 r=0.0f;
  24
  25         if(g>1.0f)
  26                 g=1.0f;
  27         if(g<0.0f)
  28                 g=0.0f;
  29
  30         if(b>1.0f)
  31                 b=1.0f;
  32         if(b<0.0f)
  33                 b=0.0f;
  34
  35         if(a>1.0f)
  36                 a=1.0f;
  37         if(a<0.0f)
  38                 a=0.0f;
  39 }
  40
  41 COLOR operator*(float scaleFactor, const COLOR & rhs)
  42 {
  43         return rhs*scaleFactor;
  44 }
  45
  46 bool COLOR::operator ==(const COLOR & rhs) const
  47 {
  48         if(r != rhs.r)
  49                 return false;
  50         if(g != rhs.g)
  51                 return false;
  52         if(b != rhs.b)
  53                 return false;
  54         if(a != rhs.a)
  55                 return false;
  56
  57         return true;
  58 }