MagickCore 6.9.12-20
Convert, Edit, Or Compose Bitmap Images
color-private.h
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1/*
2 Copyright 1999-2021 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. You may
6 obtain a copy of the License at
7
8 https://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 color methods.
17*/
18#ifndef MAGICKCORE_COLOR_PRIVATE_H
19#define MAGICKCORE_COLOR_PRIVATE_H
20
21#include "magick/image.h"
23#include "magick/color.h"
27
28#if defined(__cplusplus) || defined(c_plusplus)
29extern "C" {
30#endif
31
33 IsIntensitySimilar(const Image *,const PixelPacket *,const PixelPacket *);
34
35static inline double GetFuzzyColorDistance(const Image *p,const Image *q)
36{
37 double
38 fuzz;
39
40 fuzz=(double) MagickMax(MagickMax(p->fuzz,q->fuzz),(MagickRealType)
42 return(fuzz*fuzz);
43}
44
46 const PixelPacket *q)
47{
49 blue,
50 green,
51 red;
52
53 red=(MagickRealType) p->red;
54 green=(MagickRealType) p->green;
55 blue=(MagickRealType) p->blue;
56 if ((AbsolutePixelValue(red-q->red) < MagickEpsilon) &&
59 return(MagickTrue);
60 return(MagickFalse);
61}
62
64 const MagickPixelPacket *q)
65{
67 alpha,
68 beta;
69
70 alpha=p->matte == MagickFalse ? OpaqueOpacity : p->opacity;
71 beta=q->matte == MagickFalse ? OpaqueOpacity : q->opacity;
72 if (AbsolutePixelValue(alpha-beta) >= MagickEpsilon)
73 return(MagickFalse);
76 return(MagickTrue); /* no color component if pixel is transparent */
78 return(MagickFalse);
80 return(MagickFalse);
82 return(MagickFalse);
83 if (p->colorspace == CMYKColorspace)
84 {
86 return(MagickFalse);
87 }
88 return(MagickTrue);
89}
90
92{
94 return(MagickFalse);
95 if ((AbsolutePixelValue(pixel->red-pixel->green) < MagickEpsilon) &&
96 (AbsolutePixelValue(pixel->green-pixel->blue) < MagickEpsilon))
97 return(MagickTrue);
98 return(MagickFalse);
99}
100
102 const MagickPixelPacket *pixel)
103{
105 return(pixel->red);
106 return(0.212656*pixel->red+0.715158*pixel->green+0.072186*pixel->blue);
107}
108
110 const MagickPixelPacket *pixel)
111{
113 return(ClampToQuantum(pixel->red));
114 return(ClampToQuantum(0.212656*pixel->red+0.715158*pixel->green+
115 0.072186*pixel->blue));
116}
117
119{
121 blue,
122 green,
123 red;
124
126 return(pixel->red);
127 if (pixel->colorspace == sRGBColorspace)
128 return(0.212656*pixel->red+0.715158*pixel->green+0.072186*pixel->blue);
129 red=EncodePixelGamma(pixel->red);
130 green=EncodePixelGamma(pixel->green);
131 blue=EncodePixelGamma(pixel->blue);
132 return(0.212656*red+0.715158*green+0.072186*blue);
133}
134
136 const MagickPixelPacket *pixel)
137{
139 blue,
140 green,
141 red;
142
144 return(pixel->red);
145 if (pixel->colorspace != sRGBColorspace)
146 return(0.212656*pixel->red+0.715158*pixel->green+0.072186*pixel->blue);
147 red=DecodePixelGamma(pixel->red);
148 green=DecodePixelGamma(pixel->green);
149 blue=DecodePixelGamma(pixel->blue);
150 return(0.212656*red+0.715158*green+0.072186*blue);
151}
152
153#if defined(__cplusplus) || defined(c_plusplus)
154}
155#endif
156
157#endif
static double GetFuzzyColorDistance(const Image *p, const Image *q)
Definition: color-private.h:35
static MagickRealType MagickPixelIntensity(const MagickPixelPacket *pixel)
Definition: color-private.h:101
static MagickRealType MagickPixelLuma(const MagickPixelPacket *pixel)
Definition: color-private.h:118
MagickPrivate MagickBooleanType IsIntensitySimilar(const Image *, const PixelPacket *, const PixelPacket *)
Definition: color.c:1883
static MagickBooleanType IsMagickGray(const MagickPixelPacket *pixel)
Definition: color-private.h:91
static MagickRealType MagickPixelLuminance(const MagickPixelPacket *pixel)
Definition: color-private.h:135
static Quantum MagickPixelIntensityToQuantum(const MagickPixelPacket *pixel)
Definition: color-private.h:109
static MagickBooleanType IsColorEqual(const PixelPacket *p, const PixelPacket *q)
Definition: color-private.h:45
static MagickBooleanType IsMagickColorEqual(const MagickPixelPacket *p, const MagickPixelPacket *q)
Definition: color-private.h:63
static MagickBooleanType IsGrayColorspace(const ColorspaceType colorspace)
Definition: colorspace-private.h:96
static MagickBooleanType IssRGBCompatibleColorspace(const ColorspaceType colorspace)
Definition: colorspace-private.h:132
@ CMYKColorspace
Definition: colorspace.h:39
@ sRGBColorspace
Definition: colorspace.h:40
#define MagickSQ1_2
Definition: image-private.h:41
#define MagickMax(x, y)
Definition: image-private.h:36
#define OpaqueOpacity
Definition: image.h:27
#define TransparentOpacity
Definition: image.h:28
MagickDoubleType MagickRealType
Definition: magick-type.h:125
unsigned short Quantum
Definition: magick-type.h:85
#define MagickEpsilon
Definition: magick-type.h:115
MagickBooleanType
Definition: magick-type.h:199
@ MagickFalse
Definition: magick-type.h:200
@ MagickTrue
Definition: magick-type.h:201
#define MagickPrivate
Definition: method-attribute.h:81
static MagickRealType AbsolutePixelValue(const MagickRealType x)
Definition: pixel-accessor.h:106
MagickExport MagickRealType EncodePixelGamma(const MagickRealType pixel)
Definition: pixel.c:342
MagickExport MagickRealType DecodePixelGamma(const MagickRealType pixel)
Definition: pixel.c:246
static Quantum ClampToQuantum(const MagickRealType quantum)
Definition: quantum.h:88
Definition: image.h:153
double fuzz
Definition: image.h:220
Definition: pixel.h:105
MagickBooleanType matte
Definition: pixel.h:113
ColorspaceType colorspace
Definition: pixel.h:110
MagickRealType blue
Definition: pixel.h:124
MagickRealType index
Definition: pixel.h:126
MagickRealType opacity
Definition: pixel.h:125
MagickRealType green
Definition: pixel.h:123
MagickRealType red
Definition: pixel.h:122
Definition: pixel.h:132
Quantum green
Definition: pixel.h:144
Quantum blue
Definition: pixel.h:143
Quantum red
Definition: pixel.h:145