wsg.c File Reference

Functions
void	rotatePixel (int16_t *x, int16_t *y, int16_t rotateDeg, int16_t width, int16_t height)
void	drawWsg (const wsg_t *wsg, int16_t xOff, int16_t yOff, bool flipLR, bool flipUD, int16_t rotateDeg)
	Draw a WSG to the display.
void	drawWsgSimple (const wsg_t *wsg, int16_t xOff, int16_t yOff)
	Draw a WSG to the display without flipping or rotation.
void	drawWsgSimpleScaled (const wsg_t *wsg, int16_t xOff, int16_t yOff, int16_t xScale, int16_t yScale)
	Draw a WSG to the display without flipping or rotation.
void	drawWsgSimpleHalf (const wsg_t *wsg, int16_t xOff, int16_t yOff)
	Draw a WSG to the display without flipping or rotation at half size.
void	drawWsgTile (const wsg_t *wsg, int32_t xOff, int32_t yOff)
	Quickly copy a WSG to the display without flipping or rotation or transparency.

Function Documentation

rotatePixel()

void rotatePixel	(	int16_t *	x,
		int16_t *	y,
		int16_t	rotateDeg,
		int16_t	width,
		int16_t	height )

Transform a pixel's coordinates by rotation around the sprite's center point, then reflection over Y axis, then reflection over X axis, then translation

Parameters

x	The x coordinate of the pixel location to transform
y	The y coordinate of the pixel location to transform
rotateDeg	The number of degrees to rotate clockwise, must be 0-359
width	The width of the image
height	The height of the image

drawWsg()

void drawWsg	(	const wsg_t *	wsg,
		int16_t	xOff,
		int16_t	yOff,
		bool	flipLR,
		bool	flipUD,
		int16_t	rotateDeg )

Draw a WSG to the display.

Parameters

wsg	The WSG to draw to the display
xOff	The x offset to draw the WSG at
yOff	The y offset to draw the WSG at
flipLR	true to flip the image across the Y axis
flipUD	true to flip the image across the X axis
rotateDeg	The number of degrees to rotate clockwise, must be 0-359

drawWsgSimple()

void drawWsgSimple	(	const wsg_t *	wsg,
		int16_t	xOff,
		int16_t	yOff )

Draw a WSG to the display without flipping or rotation.

Parameters

wsg	The WSG to draw to the display
xOff	The x offset to draw the WSG at
yOff	The y offset to draw the WSG at

drawWsgSimpleScaled()

void drawWsgSimpleScaled	(	const wsg_t *	wsg,
		int16_t	xOff,
		int16_t	yOff,
		int16_t	xScale,
		int16_t	yScale )

Draw a WSG to the display without flipping or rotation.

Parameters

wsg	The WSG to draw to the display
xOff	The x offset to draw the WSG at
yOff	The y offset to draw the WSG at
xScale	The amount to scale the image horizontally
yScale	The amount to scale the image vertically

drawWsgSimpleHalf()

void drawWsgSimpleHalf	(	const wsg_t *	wsg,
		int16_t	xOff,
		int16_t	yOff )

Draw a WSG to the display without flipping or rotation at half size.

Parameters

wsg	The WSG to draw to the display
xOff	The x offset to draw the WSG at
yOff	The y offset to draw the WSG at

drawWsgTile()

void drawWsgTile	(	const wsg_t *	wsg,
		int32_t	xOff,
		int32_t	yOff )

Quickly copy a WSG to the display without flipping or rotation or transparency.

If the source WSG does have transparency, an indeterminate color will be drawn to the TFT

Parameters

wsg	The WSG to draw to the display
xOff	The x offset to draw the WSG at
yOff	The y offset to draw the WSG at