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Don't draw backwards miters.

This commit is contained in:
Patrick Walton 2020-03-31 19:38:43 -07:00
parent 764953a643
commit e6d8aab974
1 changed files with 6 additions and 2 deletions
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8
content/src/stroke.rs
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@ -383,11 +383,15 @@ impl Contour {
LineJoin::Bevel => {} LineJoin::Bevel => {}
LineJoin::Miter(miter_limit) => { LineJoin::Miter(miter_limit) => {
if let Some(prev_tangent_t) = prev_tangent.intersection_t(next_tangent) { if let Some(prev_tangent_t) = prev_tangent.intersection_t(next_tangent) {
if prev_tangent_t < -EPSILON {
return;
}
let miter_endpoint = prev_tangent.sample(prev_tangent_t); let miter_endpoint = prev_tangent.sample(prev_tangent_t);
let threshold = miter_limit * distance; let threshold = miter_limit * distance;
if (miter_endpoint - join_point).square_length() <= threshold * threshold { if (miter_endpoint - join_point).square_length() > threshold * threshold {
self.push_endpoint(miter_endpoint); return;
} }
self.push_endpoint(miter_endpoint);
} }
} }
LineJoin::Round => { LineJoin::Round => {