| 1 | /*****************************************************************************/ |
| 2 | // Copyright 2006 Adobe Systems Incorporated |
| 3 | // All Rights Reserved. |
| 4 | // |
| 5 | // NOTICE: Adobe permits you to use, modify, and distribute this file in |
| 6 | // accordance with the terms of the Adobe license agreement accompanying it. |
| 7 | /*****************************************************************************/ |
| 8 | |
| 9 | /* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_xy_coord.h#2 $ */ |
| 10 | /* $DateTime: 2012/07/31 22:04:34 $ */ |
| 11 | /* $Change: 840853 $ */ |
| 12 | /* $Author: tknoll $ */ |
| 13 | |
| 14 | /** \file |
| 15 | * Representation of colors in xy and XYZ coordinates. |
| 16 | */ |
| 17 | |
| 18 | /*****************************************************************************/ |
| 19 | |
| 20 | #ifndef __dng_xy_coord__ |
| 21 | #define __dng_xy_coord__ |
| 22 | |
| 23 | /*****************************************************************************/ |
| 24 | |
| 25 | #include "dng_classes.h" |
| 26 | #include "dng_types.h" |
| 27 | |
| 28 | /*****************************************************************************/ |
| 29 | |
| 30 | class dng_xy_coord |
| 31 | { |
| 32 | |
| 33 | public: |
| 34 | |
| 35 | real64 x; |
| 36 | real64 y; |
| 37 | |
| 38 | public: |
| 39 | |
| 40 | dng_xy_coord () |
| 41 | : x (0.0) |
| 42 | , y (0.0) |
| 43 | { |
| 44 | } |
| 45 | |
| 46 | dng_xy_coord (real64 xx, real64 yy) |
| 47 | : x (xx) |
| 48 | , y (yy) |
| 49 | { |
| 50 | } |
| 51 | |
| 52 | void Clear () |
| 53 | { |
| 54 | x = 0.0; |
| 55 | y = 0.0; |
| 56 | } |
| 57 | |
| 58 | bool IsValid () const |
| 59 | { |
| 60 | return x > 0.0 && |
| 61 | y > 0.0; |
| 62 | } |
| 63 | |
| 64 | bool NotValid () const |
| 65 | { |
| 66 | return !IsValid (); |
| 67 | } |
| 68 | |
| 69 | bool operator== (const dng_xy_coord &coord) const |
| 70 | { |
| 71 | return coord.x == x && |
| 72 | coord.y == y; |
| 73 | } |
| 74 | |
| 75 | bool operator!= (const dng_xy_coord &coord) const |
| 76 | { |
| 77 | return !(*this == coord); |
| 78 | } |
| 79 | |
| 80 | }; |
| 81 | |
| 82 | /*****************************************************************************/ |
| 83 | |
| 84 | inline dng_xy_coord operator+ (const dng_xy_coord &A, |
| 85 | const dng_xy_coord &B) |
| 86 | { |
| 87 | |
| 88 | dng_xy_coord C; |
| 89 | |
| 90 | C.x = A.x + B.x; |
| 91 | C.y = A.y + B.y; |
| 92 | |
| 93 | return C; |
| 94 | |
| 95 | } |
| 96 | |
| 97 | /*****************************************************************************/ |
| 98 | |
| 99 | inline dng_xy_coord operator- (const dng_xy_coord &A, |
| 100 | const dng_xy_coord &B) |
| 101 | { |
| 102 | |
| 103 | dng_xy_coord C; |
| 104 | |
| 105 | C.x = A.x - B.x; |
| 106 | C.y = A.y - B.y; |
| 107 | |
| 108 | return C; |
| 109 | |
| 110 | } |
| 111 | |
| 112 | /*****************************************************************************/ |
| 113 | |
| 114 | inline dng_xy_coord operator* (real64 scale, |
| 115 | const dng_xy_coord &A) |
| 116 | { |
| 117 | |
| 118 | dng_xy_coord B; |
| 119 | |
| 120 | B.x = A.x * scale; |
| 121 | B.y = A.y * scale; |
| 122 | |
| 123 | return B; |
| 124 | |
| 125 | } |
| 126 | |
| 127 | /******************************************************************************/ |
| 128 | |
| 129 | inline real64 operator* (const dng_xy_coord &A, |
| 130 | const dng_xy_coord &B) |
| 131 | { |
| 132 | |
| 133 | return A.x * B.x + |
| 134 | A.y * B.y; |
| 135 | |
| 136 | } |
| 137 | |
| 138 | /*****************************************************************************/ |
| 139 | |
| 140 | // Standard xy coordinate constants. |
| 141 | |
| 142 | inline dng_xy_coord StdA_xy_coord () |
| 143 | { |
| 144 | return dng_xy_coord (0.4476, 0.4074); |
| 145 | } |
| 146 | |
| 147 | inline dng_xy_coord D50_xy_coord () |
| 148 | { |
| 149 | return dng_xy_coord (0.3457, 0.3585); |
| 150 | } |
| 151 | |
| 152 | inline dng_xy_coord D55_xy_coord () |
| 153 | { |
| 154 | return dng_xy_coord (0.3324, 0.3474); |
| 155 | } |
| 156 | |
| 157 | inline dng_xy_coord D65_xy_coord () |
| 158 | { |
| 159 | return dng_xy_coord (0.3127, 0.3290); |
| 160 | } |
| 161 | |
| 162 | inline dng_xy_coord D75_xy_coord () |
| 163 | { |
| 164 | return dng_xy_coord (0.2990, 0.3149); |
| 165 | } |
| 166 | |
| 167 | /*****************************************************************************/ |
| 168 | |
| 169 | // Convert between xy coordinates and XYZ coordinates. |
| 170 | |
| 171 | dng_xy_coord XYZtoXY (const dng_vector_3 &coord); |
| 172 | |
| 173 | dng_vector_3 XYtoXYZ (const dng_xy_coord &coord); |
| 174 | |
| 175 | /*****************************************************************************/ |
| 176 | |
| 177 | // Returns the ICC XYZ profile connection space white point. |
| 178 | |
| 179 | dng_xy_coord PCStoXY (); |
| 180 | |
| 181 | dng_vector_3 PCStoXYZ (); |
| 182 | |
| 183 | /*****************************************************************************/ |
| 184 | |
| 185 | #endif |
| 186 | |
| 187 | /*****************************************************************************/ |
| 188 | |