shear.c File Reference

#include "magick/studio.h"
#include "magick/artifact.h"
#include "magick/attribute.h"
#include "magick/blob-private.h"
#include "magick/cache-private.h"
#include "magick/channel.h"
#include "magick/color-private.h"
#include "magick/colorspace-private.h"
#include "magick/composite.h"
#include "magick/composite-private.h"
#include "magick/decorate.h"
#include "magick/distort.h"
#include "magick/draw.h"
#include "magick/exception.h"
#include "magick/exception-private.h"
#include "magick/gem.h"
#include "magick/geometry.h"
#include "magick/image.h"
#include "magick/image-private.h"
#include "magick/memory_.h"
#include "magick/list.h"
#include "magick/matrix.h"
#include "magick/monitor.h"
#include "magick/monitor-private.h"
#include "magick/nt-base-private.h"
#include "magick/pixel-private.h"
#include "magick/quantum.h"
#include "magick/resource_.h"
#include "magick/shear.h"
#include "magick/statistic.h"
#include "magick/string_.h"
#include "magick/string-private.h"
#include "magick/thread-private.h"
#include "magick/threshold.h"
#include "magick/token.h"
#include "magick/transform.h"

Include dependency graph for shear.c:

Go to the source code of this file.

Macros
#define	RotateImageTag   "Rotate/Image"
#define	XShearImageTag   "XShear/Image"
#define	YShearImageTag   "YShear/Image"

Functions
static MagickBooleanType	CropToFitImage (Image **image, const MagickRealType x_shear, const MagickRealType y_shear, const MagickRealType width, const MagickRealType height, const MagickBooleanType rotate, ExceptionInfo *exception)
static void	RadonProjection (const Image *image, MatrixInfo *source_matrix, MatrixInfo *destination_matrix, const ssize_t sign, size_t *projection)
static MagickBooleanType	RadonTransform (const Image *image, const double threshold, size_t *projection, ExceptionInfo *exception)
static void	GetImageBackgroundColor (Image *image, const ssize_t offset, ExceptionInfo *exception)
MagickExport Image *	DeskewImage (const Image *image, const double threshold, ExceptionInfo *exception)
MagickExport Image *	IntegralRotateImage (const Image *image, size_t rotations, ExceptionInfo *exception)
static MagickBooleanType	XShearImage (Image *image, const MagickRealType degrees, const size_t width, const size_t height, const ssize_t x_offset, const ssize_t y_offset, ExceptionInfo *exception)
static MagickBooleanType	YShearImage (Image *image, const MagickRealType degrees, const size_t width, const size_t height, const ssize_t x_offset, const ssize_t y_offset, ExceptionInfo *exception)
MagickExport Image *	ShearImage (const Image *image, const double x_shear, const double y_shear, ExceptionInfo *exception)
MagickExport Image *	ShearRotateImage (const Image *image, const double degrees, ExceptionInfo *exception)

Macro Definition Documentation

RotateImageTag

#define RotateImageTag   "Rotate/Image"

XShearImageTag

#define XShearImageTag   "XShear/Image"

YShearImageTag

#define YShearImageTag   "YShear/Image"

Function Documentation

CropToFitImage()

static MagickBooleanType CropToFitImage ( Image **  image, const MagickRealType  x_shear, const MagickRealType  y_shear, const MagickRealType  width, const MagickRealType  height, const MagickBooleanType  rotate, ExceptionInfo *  exception  )

static

Definition at line 114 of file shear.c.

References CastDoubleToLong(), CropImage(), DestroyImage(), _RectangleInfo::height, MagickFalse, MagickTrue, _Image::page, ParseAbsoluteGeometry(), _RectangleInfo::width, _PointInfo::x, _RectangleInfo::x, _PointInfo::y, and _RectangleInfo::y.

Referenced by ShearImage(), and ShearRotateImage().

DeskewImage()

MagickExport Image * DeskewImage	(	const Image *	image,
		const double	threshold,
		ExceptionInfo *	exception
	)

Definition at line 564 of file shear.c.

References AcquireQuantumMemory(), AffineTransformImage(), BackgroundVirtualPixelMethod, CloneImage(), _Image::columns, CropImage(), _Image::debug, DegreesToRadians(), DestroyImage(), FormatLocaleString(), GetImageArtifact(), GetImageBackgroundColor(), GetImageBoundingBox(), GetMagickModule, _RectangleInfo::height, IsMagickTrue(), LogMagickEvent(), MagickFalse, MagickTrue, MaxTextExtent, MedianStatistic, RadiansToDegrees(), RadonTransform(), RelinquishMagickMemory(), ResourceLimitError, _AffineMatrix::rx, _AffineMatrix::ry, SetImageArtifact(), SetImageVirtualPixelMethod(), StatisticImage(), StringToLong(), _AffineMatrix::sx, _AffineMatrix::sy, ThrowImageException, TransformEvent, _AffineMatrix::tx, _AffineMatrix::ty, _RectangleInfo::width, _RectangleInfo::x, and _RectangleInfo::y.

GetImageBackgroundColor()

static void GetImageBackgroundColor ( Image *  image, const ssize_t  offset, ExceptionInfo *  exception  )

static

Definition at line 505 of file shear.c.

References AcquireVirtualCacheView(), _Image::background_color, _MagickPixelPacket::blue, _PixelPacket::blue, ClampToQuantum(), _Image::columns, DestroyCacheView(), GetCacheViewVirtualPixels(), GetMagickPixelPacket(), GetPixelBlue, GetPixelGreen, GetPixelOpacity, GetPixelRed, _MagickPixelPacket::green, _PixelPacket::green, magick_restrict, _MagickPixelPacket::opacity, _PixelPacket::opacity, QuantumRange, QuantumScale, _MagickPixelPacket::red, _PixelPacket::red, and _Image::rows.

Referenced by DeskewImage().

IntegralRotateImage()

MagickExport Image * IntegralRotateImage	(	const Image *	image,
		size_t	rotations,
		ExceptionInfo *	exception
	)

Definition at line 708 of file shear.c.

References AcquireAuthenticCacheView(), AcquireVirtualCacheView(), CloneImage(), _Image::columns, DestroyCacheView(), DestroyImage(), GetCacheViewAuthenticIndexQueue(), GetCacheViewVirtualIndexQueue(), GetCacheViewVirtualPixels(), GetPixelCacheTileSize(), GetPixelIndex, _RectangleInfo::height, magick_restrict, MagickFalse, MagickTrue, _Image::page, _Image::progress_monitor, QueueCacheViewAuthenticPixels(), RotateImageTag, _Image::rows, SetImageProgress(), SetPixelIndex, Swap, SyncCacheViewAuthenticPixels(), _Image::type, _RectangleInfo::width, _RectangleInfo::x, and _RectangleInfo::y.

Referenced by RotateImage(), and ShearRotateImage().

RadonProjection()

static void RadonProjection ( const Image *  image, MatrixInfo *  source_matrix, MatrixInfo *  destination_matrix, const ssize_t  sign, size_t *  projection  )

static

Definition at line 219 of file shear.c.

References GetMatrixColumns(), GetMatrixElement(), GetMatrixRows(), MagickFalse, and SetMatrixElement().

Referenced by RadonTransform().

RadonTransform()

static MagickBooleanType RadonTransform ( const Image *  image, const double  threshold, size_t *  projection, ExceptionInfo *  exception  )

static

Definition at line 328 of file shear.c.

References AcquireMatrixInfo(), AcquireVirtualCacheView(), _Image::columns, DestroyCacheView(), DestroyMatrixInfo(), GetCacheViewVirtualPixels(), GetPixelBlue, GetPixelGreen, GetPixelRed, magick_restrict, MagickFalse, MagickTrue, NullMatrix(), RadonProjection(), _Image::rows, and SetMatrixElement().

Referenced by DeskewImage().

ShearImage()

MagickExport Image * ShearImage	(	const Image *	image,
		const double	x_shear,
		const double	y_shear,
		ExceptionInfo *	exception
	)

Definition at line 1592 of file shear.c.

References _Image::background_color, _Image::border_color, BorderImage(), CastDoubleToLong(), CloneImage(), _Image::columns, _Image::compose, CopyCompositeOp, CropToFitImage(), DegreesToRadians(), DestroyImage(), DirectClass, _Image::exception, _Image::filename, GetMagickModule, _RectangleInfo::height, ImageError, InheritException(), IsEventLogging(), LogMagickEvent(), MagickCoreSignature, MagickFalse, MagickTrue, _Image::matte, OpaqueAlphaChannel, _Image::page, ResourceLimitError, _Image::rows, SetImageAlphaChannel(), SetImageStorageClass(), _ExceptionInfo::signature, _Image::signature, ThrowImageException, TraceEvent, _RectangleInfo::width, _PointInfo::x, _RectangleInfo::x, XShearImage(), _PointInfo::y, _RectangleInfo::y, and YShearImage().

Referenced by PreviewImage().

ShearRotateImage()

MagickExport Image * ShearRotateImage	(	const Image *	image,
		const double	degrees,
		ExceptionInfo *	exception
	)

Definition at line 1726 of file shear.c.

References _Image::background_color, _Image::border_color, BorderImage(), CastDoubleToLong(), _Image::columns, _Image::compose, CopyCompositeOp, CropToFitImage(), DegreesToRadians(), DestroyImage(), DirectClass, _Image::exception, _Image::filename, GetMagickModule, _RectangleInfo::height, InheritException(), IntegralRotateImage(), IsEventLogging(), LogMagickEvent(), MagickCoreSignature, MagickFalse, MagickTrue, _Image::matte, OpaqueAlphaChannel, _Image::page, ResourceLimitError, _Image::rows, SetImageAlphaChannel(), SetImageStorageClass(), _ExceptionInfo::signature, _Image::signature, ThrowImageException, TraceEvent, _RectangleInfo::width, _PointInfo::x, _RectangleInfo::x, XShearImage(), _PointInfo::y, _RectangleInfo::y, and YShearImage().

XShearImage()

static MagickBooleanType XShearImage ( Image *  image, const MagickRealType  degrees, const size_t  width, const size_t  height, const ssize_t  x_offset, const ssize_t  y_offset, ExceptionInfo *  exception  )

static

Definition at line 1145 of file shear.c.

References AcquireAuthenticCacheView(), _Image::background_color, CastDoubleToLong(), CMYKColorspace, _Image::colorspace, _Image::columns, ConvertRGBToCMYK(), DestroyCacheView(), _Image::filename, GetCacheViewAuthenticIndexQueue(), GetCacheViewAuthenticPixels(), GetMagickModule, GetMagickPixelPacket(), GetPixelOpacity, IsEventLogging(), LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickPixelCompositeAreaBlend(), MagickTrue, _MagickPixelPacket::opacity, _Image::progress_monitor, SetImageProgress(), SetMagickPixelPacket(), SetPixelPacket(), _Image::signature, SyncCacheViewAuthenticPixels(), TraceEvent, and XShearImageTag.

Referenced by ShearImage(), and ShearRotateImage().

YShearImage()

static MagickBooleanType YShearImage ( Image *  image, const MagickRealType  degrees, const size_t  width, const size_t  height, const ssize_t  x_offset, const ssize_t  y_offset, ExceptionInfo *  exception  )

static

Definition at line 1367 of file shear.c.

References AcquireAuthenticCacheView(), _Image::background_color, CastDoubleToLong(), CMYKColorspace, _Image::colorspace, ConvertRGBToCMYK(), DestroyCacheView(), _Image::filename, GetCacheViewAuthenticIndexQueue(), GetCacheViewAuthenticPixels(), GetMagickModule, GetMagickPixelPacket(), GetPixelOpacity, IsEventLogging(), LogMagickEvent(), magick_restrict, MagickCoreSignature, MagickFalse, MagickPixelCompositeAreaBlend(), MagickTrue, _MagickPixelPacket::opacity, _Image::progress_monitor, _Image::rows, SetImageProgress(), SetMagickPixelPacket(), SetPixelPacket(), _Image::signature, SyncCacheViewAuthenticPixels(), TraceEvent, and YShearImageTag.

Referenced by ShearImage(), and ShearRotateImage().