87 lines
2.5 KiB
C
87 lines
2.5 KiB
C
/*
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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 private methods.
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*/
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#ifndef _MAGICKCORE_IMAGE_PRIVATE_H
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#define _MAGICKCORE_IMAGE_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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#define MagickPI 3.14159265358979323846264338327950288419716939937510
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#define Magick2PI 6.28318530717958647692528676655900576839433879875020
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#define MagickPHI 1.61803398874989484820458683436563811772030917980576
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#define MagickPI2 1.57079632679489661923132169163975144209858469968755
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#define MagickSQ1_2 0.70710678118654752440084436210484903928483593768847
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#define MagickSQ2 1.41421356237309504880168872420969807856967187537695
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#define MagickSQ2PI 2.50662827463100024161235523934010416269302368164062
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#define UndefinedTicksPerSecond 100L
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#define UndefinedCompressionQuality 0UL
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extern MagickExport const char
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BackgroundColor[],
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BorderColor[],
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DefaultTileFrame[],
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DefaultTileGeometry[],
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DefaultTileLabel[],
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ForegroundColor[],
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MatteColor[],
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LoadImageTag[],
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LoadImagesTag[],
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PSDensityGeometry[],
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PSPageGeometry[],
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SaveImageTag[],
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SaveImagesTag[];
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extern MagickExport const double
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DefaultResolution;
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static inline double DegreesToRadians(const double degrees)
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{
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return((double) (MagickPI*degrees/180.0));
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}
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static inline MagickRealType RadiansToDegrees(const MagickRealType radians)
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{
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return((MagickRealType) (180.0*radians/MagickPI));
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}
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static inline unsigned char ScaleColor5to8(const unsigned int color)
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{
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return((unsigned char) (((color) << 3) | ((color) >> 2)));
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}
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static inline unsigned char ScaleColor6to8(const unsigned int color)
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{
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return((unsigned char) (((color) << 2) | ((color) >> 4)));
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}
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static inline unsigned int ScaleColor8to5(const unsigned char color)
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{
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return((unsigned int) (((color) & ~0x07) >> 3));
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}
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static inline unsigned int ScaleColor8to6(const unsigned char color)
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{
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return((unsigned int) (((color) & ~0x03) >> 2));
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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
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