Detailed Description

Provides a canvas to paint with low memory requirements.

Author: Jeremy Stintzcum (jerem.nosp@m.y.st.nosp@m.intzc.nosp@m.um@g.nosp@m.mail..nosp@m.com)

Functions
void	canvasBlankInit (wsg_t *canvas, int width, int height, paletteColor_t startColor, bool spiRam)
	Initializes a blank canvas to the dimensions and color provided.

void	canvasDrawSimple (wsg_t *canvas, cnfsFileIdx_t image, int startX, int startY)
	Draws a image to the canvas at the specified coordinates relative to the canvas.

void	canvasDrawSimplePal (wsg_t canvas, cnfsFileIdx_t image, int startX, int startY, wsgPalette_t pal)
	Draws a image to the canvas at the specified coordinates relative to the canvas and applies a palette.

void	canvasDraw (wsg_t *canvas, cnfsFileIdx_t image, int startX, int startY, bool flipX, bool flipY, int32_t rotateDeg)
	Draws an image to the canvas at a specified angle.

void	canvasDrawPal (wsg_t canvas, cnfsFileIdx_t image, int startX, int startY, bool flipX, bool flipY, int32_t rotateDeg, wsgPalette_t pal)
	Draws an image to the canvas at a specified angle.

Function Documentation

Initializes a blank canvas to the dimensions and color provided.

Parameters

canvas	WSG to save the canvas too. Use a standard wsg_t and provide the pointer
width	Width in pixels of the desired canvas
height	Height in pixels of the desired canvas
startColor	The initial color. Can be any paletteColor_t including cTransparent
spiRam	Whether or not to load the pixel data into SPIRAM.

Draws a image to the canvas at the specified coordinates relative to the canvas.

Parameters

canvas	WSG to save changes to. Will work with any WSG, cannot be reverted
image	New cnfsFileIdx_t to apply to the canvas
startX	X position on canvas. Negative moves left, positive moves right. Pixels not on canvas are cropped.
startY	Y position on canvas. Negative moves left, positive moves right. Pixels not on canvas are cropped.

Draws a image to the canvas at the specified coordinates relative to the canvas and applies a palette.

Parameters

canvas	WSG to save changes to. Will work with any WSG, cannot be reverted
image	New cnfsFileIdx_t to apply to the canvas
startX	X position on canvas. Negative moves left, positive moves right. Pixels not on canvas are cropped.
startY	Y position on canvas. Negative moves left, positive moves right. Pixels not on canvas are cropped.
pal	Palette data to use to transform the image

Draws an image to the canvas at a specified angle.

Parameters

canvas	WSG to save changes to. Will work with any WSG, cannot be reverted
image	New cnfsFileIdx_t to apply to the canvas
startX	X position on canvas. Negative moves left, positive moves right. Pixels not on canvas are cropped.
startY	Y position on canvas. Negative moves left, positive moves right. Pixels not on canvas are cropped.
flipX	Flips applied image in the x direction
flipY	Flips applied image in the Y direction
rotateDeg	Angle to draw the image at

Draws an image to the canvas at a specified angle.

Parameters

canvas	WSG to save changes to. Will work with any WSG, cannot be reverted
image	New cnfsFileIdx_t to apply to the canvas
startX	X position on canvas. Negative moves left, positive moves right. Pixels not on canvas are cropped.
startY	Y position on canvas. Negative moves left, positive moves right. Pixels not on canvas are cropped.
flipX	Flips applied image in the x direction
flipY	Flips applied image in the Y direction
rotateDeg	Angle to draw the image at
pal	Palette data to use to transform the image