DisplayTransformation

touchgfx/transforms/DisplayTransformation.hpp

Defines transformations from display space to framebuffer space. The display might be (considered) in portrait mode from 0,0 to 272,480, while the actual framebuffer is from 0,0 to 480,272. This class handles the transformations.

Public Functions

void	transformDisplayToFrameBuffer(float & x, float & y)
	Transform x,y from display to framebuffer coordinates.
void	transformDisplayToFrameBuffer(float & x, float & y, const Rect & in)
	Transform x,y from coordinates relative to the in rect to framebuffer coordinates.
void	transformDisplayToFrameBuffer(int16_t & x, int16_t & y)
	Transform x,y from display to framebuffer coordinates.
void	transformDisplayToFrameBuffer(int16_t & x, int16_t & y, const Rect & in)
	Transform x,y from coordinates relative to the in rect to framebuffer coordinates.
void	transformDisplayToFrameBuffer(Rect & r)
	Transform rectangle from display to framebuffer coordinates.
void	transformDisplayToFrameBuffer(Rect & r, const Rect & in)
	Transform rectangle r from coordinates relative to the in rect to framebuffer coordinates.
void	transformFrameBufferToDisplay(int16_t & x, int16_t & y)
	Transform x,y from framebuffer to display coordinates.
void	transformFrameBufferToDisplay(Rect & r)
	Transform rectangle from framebuffer to display coordinates.

Public Functions Documentation

transformDisplayToFrameBuffer

static void transformDisplayToFrameBuffer	(	float &	x ,
		float &	y
		)

Transform x,y from display to framebuffer coordinates.

Parameters:

x	the x part to translate.
y	the y part to translate.

transformDisplayToFrameBuffer

static void transformDisplayToFrameBuffer	(	float &	x ,
		float &	y ,
		const Rect &	in
		)

Transform x,y from coordinates relative to the in rect to framebuffer coordinates.

Transform x,y from coordinates relative to the in rect to framebuffer coordinates.

Parameters:

x	the x part to translate.
y	the y part to translate.
in	the rectangle defining the coordinate space.

transformDisplayToFrameBuffer

static void transformDisplayToFrameBuffer	(	int16_t &	x ,
		int16_t &	y
		)

Transform x,y from display to framebuffer coordinates.

Parameters:

x	the x part to translate.
y	the y part to translate.

transformDisplayToFrameBuffer

static void transformDisplayToFrameBuffer	(	int16_t &	x ,
		int16_t &	y ,
		const Rect &	in
		)

Transform x,y from coordinates relative to the in rect to framebuffer coordinates.

Transform x,y from coordinates relative to the in rect to framebuffer coordinates.

Parameters:

x	the x part to translate.
y	the y part to translate.
in	the rectangle defining the coordinate space.

transformDisplayToFrameBuffer

static void transformDisplayToFrameBuffer	(	Rect &	r	)

Transform rectangle from display to framebuffer coordinates.

Parameters:

r	the rectangle to translate.

transformDisplayToFrameBuffer

static void transformDisplayToFrameBuffer	(	Rect &	r ,
		const Rect &	in
		)

Transform rectangle r from coordinates relative to the in rect to framebuffer coordinates.

Transform rectangle r from coordinates relative to the in rect to framebuffer coordinates.

Parameters:

r	the rectangle to translate.
in	the rectangle defining the coordinate space.

transformFrameBufferToDisplay

static void transformFrameBufferToDisplay	(	int16_t &	x ,
		int16_t &	y
		)

Transform x,y from framebuffer to display coordinates.

Parameters:

x	the x part to translate.
y	the y part to translate.

transformFrameBufferToDisplay

static void transformFrameBufferToDisplay	(	Rect &	r	)

Transform rectangle from framebuffer to display coordinates.

Parameters:

r	the rectangle to translate.