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Add Plane::origin

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This commit is contained in:
Hanno Braun 2025-04-08 11:08:51 +02:00
parent 7779cf99c3
commit 9ff47b47f8
1 changed files with 7 additions and 3 deletions
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10
experiments/2025-03-18/src/geometry/plane.rs
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@ -16,6 +16,10 @@ impl Plane {
} }
} }
pub fn origin(&self) -> Point<3> {
self.origin
}
pub fn u(&self) -> Vector<3> { pub fn u(&self) -> Vector<3> {
self.u self.u
} }
@ -30,17 +34,17 @@ impl Plane {
pub fn point_from_local(&self, point: impl Into<Point<2>>) -> Point<3> { pub fn point_from_local(&self, point: impl Into<Point<2>>) -> Point<3> {
let [u, v] = point.into().coords.components; let [u, v] = point.into().coords.components;
self.origin + self.u() * u + self.v() * v self.origin() + self.u() * u + self.v() * v
} }
pub fn project_point(&self, point: impl Into<Point<3>>) -> Point<2> { pub fn project_point(&self, point: impl Into<Point<3>>) -> Point<2> {
let point = point.into(); let point = point.into();
let origin_to_point = point - self.origin; let origin_to_point = point - self.origin();
let min_distance_plane_to_point = origin_to_point.dot(&self.normal()); let min_distance_plane_to_point = origin_to_point.dot(&self.normal());
let point_in_plane = let point_in_plane =
point - self.normal() * min_distance_plane_to_point; point - self.normal() * min_distance_plane_to_point;
let origin_to_point_in_plane = point_in_plane - self.origin; let origin_to_point_in_plane = point_in_plane - self.origin();
let u = origin_to_point_in_plane.dot(&self.u()); let u = origin_to_point_in_plane.dot(&self.u());
let v = origin_to_point_in_plane.dot(&self.v()); let v = origin_to_point_in_plane.dot(&self.v());