MagickCore  6.9.9
image-private.h
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1 /*
2  Copyright 1999-2017 ImageMagick Studio LLC, a non-profit organization
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  https://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 
25 #if defined(MAGICKCORE_HAVE_ISNAN)
26 # define IsNaN(a) isnan(a)
27 #elif defined(_MSC_VER) && (_MSC_VER >= 1310)
28 # include <float.h>
29 # define IsNaN(a) _isnan(a)
30 #else
31 # define IsNaN(a) (a != a)
32 #endif
33 #if !defined(INFINITY)
34 # define INFINITY (log(0))
35 #endif
36 #define MagickAbsoluteValue(x) ((x) < 0 ? -(x) : (x))
37 #define MagickMax(x,y) (((x) > (y)) ? (x) : (y))
38 #define MagickMin(x,y) (((x) < (y)) ? (x) : (y))
39 #define MagickPI 3.14159265358979323846264338327950288419716939937510
40 #define Magick2PI 6.28318530717958647692528676655900576839433879875020
41 #define MagickPHI 1.61803398874989484820458683436563811772030917980576
42 #define MagickPI2 1.57079632679489661923132169163975144209858469968755
43 #define MagickSQ1_2 0.70710678118654752440084436210484903928483593768847
44 #define MagickSQ2 1.41421356237309504880168872420969807856967187537695
45 #define MagickSQ2PI 2.50662827463100024161235523934010416269302368164062
46 #define UndefinedTicksPerSecond 100L
47 #define UndefinedCompressionQuality 0UL
48 
49 extern MagickExport const char
51  BorderColor[],
56  MatteColor[],
57  LoadImageTag[],
58  LoadImagesTag[],
61  SaveImageTag[],
62  SaveImagesTag[];
63 
64 extern MagickExport const double
66 
67 static inline double DegreesToRadians(const double degrees)
68 {
69  return((double) (MagickPI*degrees/180.0));
70 }
71 
72 static inline MagickRealType RadiansToDegrees(const MagickRealType radians)
73 {
74  return((MagickRealType) (180.0*radians/MagickPI));
75 }
76 
77 static inline unsigned char ScaleColor5to8(const unsigned int color)
78 {
79  return((unsigned char) (((color) << 3) | ((color) >> 2)));
80 }
81 
82 static inline unsigned char ScaleColor6to8(const unsigned int color)
83 {
84  return((unsigned char) (((color) << 2) | ((color) >> 4)));
85 }
86 
87 static inline unsigned int ScaleColor8to5(const unsigned char color)
88 {
89  return((unsigned int) (((color) & ~0x07) >> 3));
90 }
91 
92 static inline unsigned int ScaleColor8to6(const unsigned char color)
93 {
94  return((unsigned int) (((color) & ~0x03) >> 2));
95 }
96 
97 #if defined(__cplusplus) || defined(c_plusplus)
98 }
99 #endif
100 
101 #endif
MagickDoubleType MagickRealType
Definition: magick-type.h:123
MagickExport const char BackgroundColor[]
Definition: image.c:107
MagickExport const char PSDensityGeometry[]
Definition: image.c:116
static unsigned char ScaleColor6to8(const unsigned int color)
Definition: image-private.h:82
MagickExport const char DefaultTileFrame[]
Definition: image.c:109
static unsigned char ScaleColor5to8(const unsigned int color)
Definition: image-private.h:77
MagickExport const char DefaultTileGeometry[]
Definition: image.c:110
#define MagickPI
Definition: image-private.h:39
MagickExport const char LoadImageTag[]
Definition: image.c:113
MagickExport const char ForegroundColor[]
Definition: image.c:112
static unsigned int ScaleColor8to6(const unsigned char color)
Definition: image-private.h:92
static double DegreesToRadians(const double degrees)
Definition: image-private.h:67
static unsigned int ScaleColor8to5(const unsigned char color)
Definition: image-private.h:87
MagickExport const char DefaultTileLabel[]
Definition: image.c:111
MagickExport const char BorderColor[]
Definition: image.c:108
MagickExport const char SaveImageTag[]
Definition: image.c:118
MagickExport const char LoadImagesTag[]
Definition: image.c:114
MagickExport const char MatteColor[]
Definition: image.c:115
static MagickRealType RadiansToDegrees(const MagickRealType radians)
Definition: image-private.h:72
#define MagickExport
Definition: method-attribute.h:98
MagickExport const double DefaultResolution
Definition: image.c:123
MagickExport const char PSPageGeometry[]
Definition: image.c:117
MagickExport const char SaveImagesTag[]
Definition: image.c:119