| use glam::DVec2; |
|
|
| #[derive(Clone, Copy, Debug, PartialEq)] |
| pub(crate) struct Aabb { |
| pub top: f64, |
| pub right: f64, |
| pub bottom: f64, |
| pub left: f64, |
| } |
|
|
| pub(crate) fn bounding_boxes_overlap(a: &Aabb, b: &Aabb) -> bool { |
| a.left <= b.right && b.left <= a.right && a.top <= b.bottom && b.top <= a.bottom |
| } |
|
|
| pub(crate) fn merge_bounding_boxes(a: Option<Aabb>, b: &Aabb) -> Aabb { |
| match a { |
| Some(a) => Aabb { |
| top: a.top.min(b.top), |
| right: a.right.max(b.right), |
| bottom: a.bottom.max(b.bottom), |
| left: a.left.min(b.left), |
| }, |
| None => *b, |
| } |
| } |
|
|
| pub(crate) fn extend_bounding_box(bounding_box: Option<Aabb>, point: DVec2) -> Aabb { |
| match bounding_box { |
| Some(bb) => Aabb { |
| top: bb.top.min(point.y), |
| right: bb.right.max(point.x), |
| bottom: bb.bottom.max(point.y), |
| left: bb.left.min(point.x), |
| }, |
| None => Aabb { |
| top: point.y, |
| right: point.x, |
| bottom: point.y, |
| left: point.x, |
| }, |
| } |
| } |
|
|
| pub(crate) fn bounding_box_max_extent(bounding_box: &Aabb) -> f64 { |
| (bounding_box.right - bounding_box.left).max(bounding_box.bottom - bounding_box.top) |
| } |
|
|
| pub(crate) fn bounding_box_around_point(point: DVec2, padding: f64) -> Aabb { |
| Aabb { |
| top: point.y - padding, |
| right: point.x + padding, |
| bottom: point.y + padding, |
| left: point.x - padding, |
| } |
| } |
|
|
| pub(crate) fn expand_bounding_box(bounding_box: &Aabb, padding: f64) -> Aabb { |
| Aabb { |
| top: bounding_box.top - padding, |
| right: bounding_box.right + padding, |
| bottom: bounding_box.bottom + padding, |
| left: bounding_box.left - padding, |
| } |
| } |
|
|
