cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 1 | /* |
cristy | fe676ee | 2013-11-18 13:03:38 +0000 | [diff] [blame] | 2 | Copyright 1999-2014 ImageMagick Studio LLC, a non-profit organization |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 3 | dedicated to making software imaging solutions freely available. |
| 4 | |
| 5 | You may not use this file except in compliance with the License. |
| 6 | obtain a copy of the License at |
| 7 | |
| 8 | http://www.imagemagick.org/script/license.php |
| 9 | |
| 10 | Unless required by applicable law or agreed to in writing, software |
| 11 | distributed under the License is distributed on an "AS IS" BASIS, |
| 12 | WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 13 | See the License for the specific language governing permissions and |
| 14 | limitations under the License. |
| 15 | |
| 16 | MagickCore image private methods. |
| 17 | */ |
| 18 | #ifndef _MAGICKCORE_IMAGE_PRIVATE_H |
| 19 | #define _MAGICKCORE_IMAGE_PRIVATE_H |
| 20 | |
| 21 | #if defined(__cplusplus) || defined(c_plusplus) |
| 22 | extern "C" { |
| 23 | #endif |
| 24 | |
cristy | 270b52b | 2012-08-29 21:03:28 +0000 | [diff] [blame] | 25 | #define Magick2PI 6.28318530717958647692528676655900576839433879875020 |
| 26 | #define MagickPHI 1.61803398874989484820458683436563811772030917980576 |
| 27 | #define MagickPI2 1.57079632679489661923132169163975144209858469968755 |
| 28 | #define MagickSQ1_2 0.70710678118654752440084436210484903928483593768847 |
| 29 | #define MagickSQ2 1.41421356237309504880168872420969807856967187537695 |
| 30 | #define MagickSQ2PI 2.50662827463100024161235523934010416269302368164062 |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 31 | #define UndefinedTicksPerSecond 100L |
| 32 | #define UndefinedCompressionQuality 0UL |
| 33 | |
cristy | d9ecd04 | 2012-06-17 18:26:12 +0000 | [diff] [blame] | 34 | extern MagickExport const char |
| 35 | BackgroundColor[], |
| 36 | BorderColor[], |
| 37 | DefaultTileFrame[], |
| 38 | DefaultTileGeometry[], |
| 39 | DefaultTileLabel[], |
| 40 | ForegroundColor[], |
| 41 | MatteColor[], |
| 42 | LoadImageTag[], |
| 43 | LoadImagesTag[], |
| 44 | PSDensityGeometry[], |
| 45 | PSPageGeometry[], |
| 46 | SaveImageTag[], |
| 47 | SaveImagesTag[]; |
| 48 | |
| 49 | extern MagickExport const double |
| 50 | DefaultResolution; |
| 51 | |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 52 | static inline double DegreesToRadians(const double degrees) |
| 53 | { |
cristy | 475bd8a | 2010-09-12 19:55:24 +0000 | [diff] [blame] | 54 | return((double) (MagickPI*degrees/180.0)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 55 | } |
| 56 | |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 57 | static inline double RadiansToDegrees(const double radians) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 58 | { |
cristy | a19f1d7 | 2012-08-07 18:24:38 +0000 | [diff] [blame] | 59 | return((double) (180.0*radians/MagickPI)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 60 | } |
| 61 | |
cristy | 5ed838e | 2010-05-31 00:05:35 +0000 | [diff] [blame] | 62 | static inline unsigned char ScaleColor5to8(const unsigned int color) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 63 | { |
| 64 | return((unsigned char) (((color) << 3) | ((color) >> 2))); |
| 65 | } |
| 66 | |
cristy | 5ed838e | 2010-05-31 00:05:35 +0000 | [diff] [blame] | 67 | static inline unsigned char ScaleColor6to8(const unsigned int color) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 68 | { |
| 69 | return((unsigned char) (((color) << 2) | ((color) >> 4))); |
| 70 | } |
| 71 | |
cristy | 5ed838e | 2010-05-31 00:05:35 +0000 | [diff] [blame] | 72 | static inline unsigned int ScaleColor8to5(const unsigned char color) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 73 | { |
cristy | 5ed838e | 2010-05-31 00:05:35 +0000 | [diff] [blame] | 74 | return((unsigned int) (((color) & ~0x07) >> 3)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 75 | } |
| 76 | |
cristy | 5ed838e | 2010-05-31 00:05:35 +0000 | [diff] [blame] | 77 | static inline unsigned int ScaleColor8to6(const unsigned char color) |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 78 | { |
cristy | 5ed838e | 2010-05-31 00:05:35 +0000 | [diff] [blame] | 79 | return((unsigned int) (((color) & ~0x03) >> 2)); |
cristy | 3ed852e | 2009-09-05 21:47:34 +0000 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | #if defined(__cplusplus) || defined(c_plusplus) |
| 83 | } |
| 84 | #endif |
| 85 | |
| 86 | #endif |