alex/nih-plug
1
0
Fork 0
Code Activity

Add tests for triangle intersection

Browse source
This commit is contained in:
Robbert van der Helm 2023-11-05 22:46:42 +01:00
parent fb71357ca3
commit 68962fa22b
1 changed files with 27 additions and 3 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

30
nih_plug_vizia/src/widgets/resize_handle.rs
View file

@ -202,7 +202,31 @@ fn intersects_triangle(bounds: BoundingBox, (x, y): (f32, f32)) -> bool {
// let (v2x, v2y) = (p3x - p2x, p3y - p2y);
// let (v3x, v3y) = (p1x - p3x, p1y - p3y);
((x - p1x) * v1y) - ((y - p1y) * v1x) <= 0.0
// && ((x - p2x) * v2y) - ((y - p2y) * v2x) <= 0.0
// && ((x - p3x) * v3y) - ((y - p3y) * v3x) <= 0.0
((x - p1x) * v1y) - ((y - p1y) * v1x) >= 0.0
// && ((x - p2x) * v2y) - ((y - p2y) * v2x) >= 0.0
// && ((x - p3x) * v3y) - ((y - p3y) * v3x) >= 0.0
}
#[cfg(test)]
mod tests {
use super::*;
#[test]
fn triangle_intersection() {
let bbox = BoundingBox {
x: 10.0,
y: 10.0,
w: 10.0,
h: 10.0,
};
assert!(!intersects_triangle(bbox, (10.0, 10.0)));
assert!(intersects_triangle(bbox, (20.0, 10.0)));
assert!(intersects_triangle(bbox, (10.0, 20.0)));
assert!(intersects_triangle(bbox, (20.0, 20.0)));
assert!(intersects_triangle(bbox, (15.0, 15.0)));
assert!(!intersects_triangle(bbox, (14.9, 15.0)));
assert!(!intersects_triangle(bbox, (15.0, 14.9)));
}
}