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Merge pull request #232 from s3bk/PR 

fix #219 (minimum stroke thickness)
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Patrick Walton 2019-10-04 20:30:23 -07:00 committed by GitHub
parent 8914cb4977 3d0e911c3e
commit 99654270c9
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 7 additions and 1 deletions
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8
canvas/src/lib.rs
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@ -168,7 +168,13 @@ impl CanvasRenderingContext2D {
let paint_id = self.scene.push_paint(&paint);
let mut stroke_style = self.current_state.resolve_stroke_style();
stroke_style.line_width = f32::max(stroke_style.line_width, HAIRLINE_STROKE_WIDTH);
// the smaller scale is relevant here, as we multiply by it and want to ensure it is always bigger than HAIRLINE_STROKE_WIDTH
let transform_scale = f32::min(self.current_state.transform.m11(), self.current_state.transform.m22());
// avoid the division in the normal case of sufficient thickness
if stroke_style.line_width * transform_scale < HAIRLINE_STROKE_WIDTH {
stroke_style.line_width = HAIRLINE_STROKE_WIDTH / transform_scale;
}
let mut outline = path.into_outline();
if !self.current_state.line_dash.is_empty() {