MagickCore
6.8.5
color-private.h
Go to the documentation of this file.
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/*
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Copyright 1999-2013 ImageMagick Studio LLC, a non-profit organization
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dedicated to making software imaging solutions freely available.
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You may not use this file except in compliance with the License.
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obtain a copy of the License at
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http://www.imagemagick.org/script/license.php
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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MagickCore image color methods.
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*/
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#ifndef _MAGICKCORE_COLOR_PRIVATE_H
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#define _MAGICKCORE_COLOR_PRIVATE_H
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#if defined(__cplusplus) || defined(c_plusplus)
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extern
"C"
{
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#endif
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#include "
magick/image.h
"
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#include "
magick/color.h
"
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#include "
magick/exception-private.h
"
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#include "
magick/pixel-accessor.h
"
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static
inline
MagickBooleanType
IsColorEqual
(
const
PixelPacket
*p,
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const
PixelPacket
*q)
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{
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MagickRealType
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blue,
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green,
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red;
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red=(
MagickRealType
) p->
red
;
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green=(
MagickRealType
) p->
green
;
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blue=(
MagickRealType
) p->
blue
;
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if ((fabs(red-q->
red
) <
MagickEpsilon
) &&
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(fabs(green-q->
green
) <
MagickEpsilon
) &&
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(fabs(blue-q->
blue
) <
MagickEpsilon
))
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return
(
MagickTrue
);
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return
(
MagickFalse
);
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}
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static
inline
MagickBooleanType
IsMagickColorEqual
(
const
MagickPixelPacket
*p,
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const
MagickPixelPacket
*q)
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{
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if
((p->
matte
!=
MagickFalse
) && (q->
matte
==
MagickFalse
) &&
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(fabs(p->
opacity
-
OpaqueOpacity
) >=
MagickEpsilon
))
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return
(
MagickFalse
);
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if
((q->
matte
!=
MagickFalse
) && (p->
matte
==
MagickFalse
) &&
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(fabs(q->
opacity
-
OpaqueOpacity
)) >=
MagickEpsilon
)
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return
(
MagickFalse
);
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if
((p->
matte
!=
MagickFalse
) && (q->
matte
!=
MagickFalse
))
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{
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if
(fabs(p->
opacity
-q->
opacity
) >=
MagickEpsilon
)
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return
(
MagickFalse
);
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if
(fabs(p->
opacity
-
TransparentOpacity
) <
MagickEpsilon
)
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return
(
MagickTrue
);
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}
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if
(fabs(p->
red
-q->
red
) >=
MagickEpsilon
)
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return
(
MagickFalse
);
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if
(fabs(p->
green
-q->
green
) >=
MagickEpsilon
)
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return
(
MagickFalse
);
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if
(fabs(p->
blue
-q->
blue
) >=
MagickEpsilon
)
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return
(
MagickFalse
);
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if
((p->
colorspace
==
CMYKColorspace
) &&
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(fabs(p->
index
-q->
index
) >=
MagickEpsilon
))
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return
(
MagickFalse
);
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return
(
MagickTrue
);
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}
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static
inline
MagickBooleanType
IsMagickGray
(
const
MagickPixelPacket
*pixel)
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{
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if
((pixel->
colorspace
!=
GRAYColorspace
) &&
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(pixel->
colorspace
!=
RGBColorspace
))
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return
(
MagickFalse
);
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if
((fabs(pixel->
red
-pixel->
green
) <
MagickEpsilon
) &&
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(fabs(pixel->
green
-pixel->
blue
) <
MagickEpsilon
))
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return
(
MagickTrue
);
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return
(
MagickFalse
);
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}
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static
inline
MagickRealType
MagickPixelIntensity
(
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const
MagickPixelPacket
*pixel)
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{
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MagickRealType
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blue,
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green,
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red;
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if
(pixel->
colorspace
==
GRAYColorspace
)
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return
(pixel->
red
);
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if
(pixel->
colorspace
!=
sRGBColorspace
)
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return
(0.298839*pixel->
red
+0.586811*pixel->
green
+0.114350*pixel->
blue
);
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red=
DecodePixelGamma
(pixel->
red
);
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green=
DecodePixelGamma
(pixel->
green
);
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blue=
DecodePixelGamma
(pixel->
blue
);
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return
(0.298839*red+0.586811*green+0.114350*blue);
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}
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static
inline
Quantum
MagickPixelIntensityToQuantum
(
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const
MagickPixelPacket
*pixel)
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{
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MagickRealType
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blue,
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green,
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red;
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if
(pixel->
colorspace
==
GRAYColorspace
)
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return
(
ClampToQuantum
(pixel->
red
));
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if
(pixel->
colorspace
!=
sRGBColorspace
)
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return
(
ClampToQuantum
(0.298839*pixel->
red
+0.586811*pixel->
green
+
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0.114350*pixel->
blue
));
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red=
DecodePixelGamma
(pixel->
red
);
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green=
DecodePixelGamma
(pixel->
green
);
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blue=
DecodePixelGamma
(pixel->
blue
);
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return
(
ClampToQuantum
(0.298839*red+0.586811*green+0.114350*blue));
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}
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static
inline
MagickRealType
MagickPixelLuminance
(
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const
MagickPixelPacket
*pixel)
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{
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MagickRealType
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blue,
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green,
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red;
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if
(pixel->
colorspace
==
GRAYColorspace
)
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return
(pixel->
red
);
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if
(pixel->
colorspace
!=
sRGBColorspace
)
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return
(0.21267f*pixel->
red
+0.71516f*pixel->
green
+0.07217f*pixel->
blue
);
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red=
DecodePixelGamma
(pixel->
red
);
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green=
DecodePixelGamma
(pixel->
green
);
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blue=
DecodePixelGamma
(pixel->
blue
);
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return
(0.21267f*red+0.71516f*green+0.07217f*blue);
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}
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#if defined(__cplusplus) || defined(c_plusplus)
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}
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#endif
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#endif
magick
color-private.h
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