renderstack::color Class Reference
simple rgb triplet
#include <color.hpp>
Detailed Description
Definition at line 36 of file color.hpp.
Constructor & Destructor Documentation
| renderstack::color::color |
( |
float |
r_, |
|
|
float |
g_, |
|
|
float |
b_ | |
|
) |
| | [inline] |
Definition at line 39 of file color.hpp.
00040 : r(r_)
00041 , g(g_)
00042 , b(b_)
00043 {
00044 }
| renderstack::color::color |
( |
vec3 const & |
v |
) |
[inline] |
Definition at line 46 of file color.hpp.
00047 : r(v.x)
00048 , g(v.y)
00049 , b(v.y)
00050 {
00051 }
Member Function Documentation
| float renderstack::color::max_component |
( |
|
) |
const |
Definition at line 84 of file color.cpp.
00085 {
00086 float max;
00087
00088 if(r > g)
00089 {
00090 max = r;
00091 }
00092 else
00093 {
00094 max = g;
00095 }
00096 if(b > max)
00097 {
00098 max = b;
00099 }
00100 return max;
00101 }
| float renderstack::color::min_component |
( |
|
) |
const |
Definition at line 103 of file color.cpp.
00104 {
00105 float min;
00106
00107 if(r < g)
00108 {
00109 min = r;
00110 }
00111 else
00112 {
00113 min = g;
00114 }
00115 if(b < min)
00116 {
00117 min = b;
00118 }
00119 return min;
00120 }
| vec3 renderstack::color::hsv |
( |
|
) |
const |
Definition at line 122 of file color.cpp.
00123 {
00124 float h = 0;
00125 float s = 1.0f;
00126 float v = 1.0f;
00127 float max_v;
00128 float min_v;
00129 float diff;
00130 float r_dist;
00131 float g_dist;
00132 float b_dist;
00133 float undefined = 0;
00134
00135 max_v = max_component();
00136 min_v = min_component();
00137 diff = max_v - min_v;
00138 v = max_v;
00139
00140 if(RS_NEAR_ZERO(max_v))
00141 {
00142 s = 0;
00143 }
00144 else
00145 {
00146 s = diff / max_v;
00147 }
00148 if(s == 0)
00149 {
00150 h = undefined;
00151 }
00152 else
00153 {
00154 r_dist = (max_v - r) / diff;
00155 g_dist = (max_v - g) / diff;
00156 b_dist = (max_v - b) / diff;
00157 if(r == max_v)
00158 {
00159 h = b_dist - g_dist;
00160 }
00161 else
00162 {
00163 if(g == max_v)
00164 {
00165 h = 2.0f + r_dist - b_dist;
00166 }
00167 else
00168 {
00169 if(b == max_v)
00170 {
00171 h = 4.0f + g_dist - r_dist;
00172 }
00173 }
00174 }
00175 h = h * 60.0f;
00176 if(h < 0)
00177 {
00178 h += 360.0f;
00179 }
00180 }
00181 return vec3(h, s, v);
00182 }
Field Documentation
The documentation for this class was generated from the following files:
