Trait Canvas

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pub trait Canvas {
    // Required methods
    fn push_clip(&mut self, rect: Rect);
    fn pop_clip(&mut self);
    fn fill_rect(&mut self, rect: Rect, color: Color);
    fn stroke_rect(&mut self, rect: Rect, stroke: StrokeStyle);
    fn stroke_line(&mut self, a: Point, b: Point, stroke: StrokeStyle);
    fn stroke_polyline(&mut self, coords: &[f32], stroke: StrokeStyle);
    fn fill_triangle_strip(&mut self, coords: &[f32], colors: &[Color]);
    fn draw_text(&mut self, p: Point, text: &str, color: Color, size_px: f32);
}

Required Methods§

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fn push_clip(&mut self, rect: Rect)

Clip subsiguiente al rect dado. Stack-discipline: push_clip + draw + pop_clip.

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fn pop_clip(&mut self)

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fn fill_rect(&mut self, rect: Rect, color: Color)

Rectángulo relleno (sin stroke).

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fn stroke_rect(&mut self, rect: Rect, stroke: StrokeStyle)

Rectángulo sólo stroke (sin fill).

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fn stroke_line(&mut self, a: Point, b: Point, stroke: StrokeStyle)

Línea de a→b.

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fn stroke_polyline(&mut self, coords: &[f32], stroke: StrokeStyle)

Polilínea sobre coords interleaved [x0,y0,x1,y1,…]. El backend la rendea como un solo draw call cuando puede.

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fn fill_triangle_strip(&mut self, coords: &[f32], colors: &[Color])

Triangle strip rellenado, con un color por vértice (longitudes deben coincidir: coords.len()/2 == colors.len()). Es lo que usa el phosphor trail y los ribbons Sankey.

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