image::rotate_modification Class Reference

Rotate (ROTATE) modification. More...

#include <image_modifications.hpp>

Inheritance diagram for image::rotate_modification:

Public Member Functions
	rotate_modification (int degrees=90, int zoom=16, int offset=8)
	Constructor. More...
virtual surface	operator() (const surface &src) const
	Applies the image-path modification on the specified surface. More...
bool	no_op () const
Public Member Functions inherited from image::modification
virtual	~modification ()
virtual int	priority () const
	Specifies the priority of the modification. More...

Private Attributes
int	degrees_
int	zoom_
int	offset_

Additional Inherited Members
Static Public Member Functions inherited from image::modification
static modification_queue	decode (const std::string &)
	Decodes modifications from a modification string. More...

Detailed Description

Rotate (ROTATE) modification.

Definition at line 185 of file image_modifications.hpp.

Constructor & Destructor Documentation

rotate_modification()

image::rotate_modification::rotate_modification ( int  degrees = 90, int  zoom = 16, int  offset = 8  )

inline

Constructor.

Precondition

zoom >= offset Otherwise the result will have empty pixels.

offset > 0 Otherwise the procedure will not return.

Parameters

degrees	Amount of rotation (in degrees). Positive values are clockwise; negative are counter-clockwise.
zoom	The zoom level to calculate the rotation from. Greater values result in better results and increased runtime. This parameter will be ignored if degrees is a multiple of 90.
offset	Determines the step size of the scanning of the zoomed source. Different offsets can produce better results, try them out. Greater values result in decreased runtime. This parameter will be ignored if degrees is a multiple of 90. If offset is greater than zoom the result will have empty pixels.

Definition at line 205 of file image_modifications.hpp.

Member Function Documentation

no_op()

bool image::rotate_modification::no_op ( ) const

inline

Definition at line 210 of file image_modifications.hpp.

References degrees_.

operator()()

surface image::rotate_modification::operator() ( const surface &  src ) const

virtual

Applies the image-path modification on the specified surface.

Implements image::modification.

Definition at line 174 of file image_modifications.cpp.

References rotate_180_surface(), rotate_90_surface(), and rotate_any_surface().

Member Data Documentation

degrees_

int image::rotate_modification::degrees_

private

Definition at line 213 of file image_modifications.hpp.

Referenced by no_op().

offset_

int image::rotate_modification::offset_

private

Definition at line 215 of file image_modifications.hpp.

zoom_

int image::rotate_modification::zoom_

private

Definition at line 214 of file image_modifications.hpp.

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The documentation for this class was generated from the following files:

• image_modifications.hpp
• image_modifications.cpp