wsg.c File Reference

Functions
void	rotatePixel (int32_t *x, int32_t *y, int32_t rotateDeg, int32_t width, int32_t height)
void	drawWsgSolid (const wsg_t *wsg, int32_t xOff, int32_t yOff, bool flipLR, bool flipUD, int32_t rotateDeg, paletteColor_t solidColor)
	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. xScale and yScale must share the same sign or else the image will be drawn normally at 1x scale.
void	drawWsgSimpleScaledUp (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	drawWsgSimpleScaledDown (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 at half size.
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	drawWsgSmoothScaled (const wsg_t *wsg, int16_t xOff, int16_t yOff, q24_8 xScale, q24_8 yScale)
	Draw a WSG to the display without flipping or rotation. Use drawWsgSimpleScaled and drawWsgSimpleHalf if halving or doubling sprites.
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	(	int32_t *	x,
		int32_t *	y,
		int32_t	rotateDeg,
		int32_t	width,
		int32_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

drawWsgSolid()

void drawWsgSolid	(	const wsg_t *	wsg,
		int32_t	xOff,
		int32_t	yOff,
		bool	flipLR,
		bool	flipUD,
		int32_t	rotateDeg,
		paletteColor_t	solidColor )

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
solidColor	A single color to use for each pixel, or cTransparent to ignore

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. xScale and yScale must share the same sign or else the image will be drawn normally at 1x scale.

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

drawWsgSimpleScaledUp()

void drawWsgSimpleScaledUp	(	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

drawWsgSimpleScaledDown()

void drawWsgSimpleScaledDown	(	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 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
xScale	1 draws at half scale, 2 at quarter scale, etc...
yScale	1 draws at half scale, 2 at quarter scale, etc...

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

drawWsgSmoothScaled()

void drawWsgSmoothScaled	(	const wsg_t *	wsg,
		int16_t	xOff,
		int16_t	yOff,
		q24_8	xScale,
		q24_8	yScale )

Draw a WSG to the display without flipping or rotation. Use drawWsgSimpleScaled and drawWsgSimpleHalf if halving or doubling sprites.

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

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