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Add line widths to the NanoVG demo

This commit is contained in:
Patrick Walton 2020-04-03 14:51:37 -07:00
parent ad61b78e39
commit b38f75a38d
1 changed files with 17 additions and 0 deletions
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17
examples/canvas_nanovg/src/main.rs
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@ -78,6 +78,7 @@ fn render_demo(context: &mut CanvasRenderingContext2D,
draw_lines(context, draw_lines(context,
RectF::new(vec2f(120.0, window_size.y() - 50.0), vec2f(600.0, 50.0)), RectF::new(vec2f(120.0, window_size.y() - 50.0), vec2f(600.0, 50.0)),
time); time);
draw_widths(context, vec2f(10.0, 50.0), 30.0);
draw_caps(context, RectF::new(vec2f(10.0, 300.0), vec2f(30.0, 40.0))); draw_caps(context, RectF::new(vec2f(10.0, 300.0), vec2f(30.0, 40.0)));
draw_clip(context, vec2f(50.0, window_size.y() - 80.0), time); draw_clip(context, vec2f(50.0, window_size.y() - 80.0), time);
@ -477,6 +478,22 @@ fn draw_lines(context: &mut CanvasRenderingContext2D, rect: RectF, time: f32) {
context.restore(); context.restore();
} }
fn draw_widths(context: &mut CanvasRenderingContext2D, mut origin: Vector2F, width: f32) {
context.save();
context.set_stroke_style(rgbau(0, 0, 0, 255));
for index in 0..20 {
context.set_line_width((index as f32 + 0.5) * 0.1);
let mut path = Path2D::new();
path.move_to(origin);
path.line_to(origin + vec2f(1.0, 0.3) * width);
context.stroke_path(path);
origin += vec2f(0.0, 10.0);
}
context.restore();
}
fn draw_caps(context: &mut CanvasRenderingContext2D, rect: RectF) { fn draw_caps(context: &mut CanvasRenderingContext2D, rect: RectF) {
const LINE_WIDTH: f32 = 8.0; const LINE_WIDTH: f32 = 8.0;