Struct CanvasContext 

pub struct CanvasContext { /* private fields */ }

Implementations

impl CanvasContext

pub fn width(&self) -> usize

Get the pixel width of the canvas.

pub fn height(&self) -> usize

Get the pixel height of the canvas.

pub fn dot(&mut self, x: usize, y: usize)

Set a single pixel at (x, y).

pub fn line(&mut self, x0: usize, y0: usize, x1: usize, y1: usize)

Draw a line from (x0, y0) to (x1, y1) using Bresenham’s algorithm.

pub fn rect(&mut self, x: usize, y: usize, w: usize, h: usize)

Draw a rectangle outline from (x, y) with w width and h height.

pub fn circle(&mut self, cx: usize, cy: usize, r: usize)

Draw a circle outline centered at (cx, cy) with radius r.

pub fn set_color(&mut self, color: Color)

Set the drawing color for subsequent shapes.

pub fn color(&self) -> Color

Get the current drawing color.

pub fn filled_rect(&mut self, x: usize, y: usize, w: usize, h: usize)

Draw a filled rectangle.

pub fn filled_circle(&mut self, cx: usize, cy: usize, r: usize)

Draw a filled circle.

pub fn triangle( &mut self, x0: usize, y0: usize, x1: usize, y1: usize, x2: usize, y2: usize, )

Draw a triangle outline.

pub fn filled_triangle( &mut self, x0: usize, y0: usize, x1: usize, y1: usize, x2: usize, y2: usize, )

Draw a filled triangle.

pub fn points(&mut self, pts: &[(usize, usize)])

Draw multiple points at once.

pub fn polyline(&mut self, pts: &[(usize, usize)])

Draw a polyline connecting the given points in order.

pub fn print(&mut self, x: usize, y: usize, text: &str)

Place a text label at pixel position (x, y). Text is rendered in regular characters overlaying the braille grid.

pub fn layer(&mut self)

Start a new drawing layer. Shapes on later layers overlay earlier ones.