From 958e27ca108a2462e30605ba60134bb1fb1393d3 Mon Sep 17 00:00:00 2001
From: Hanno Braun <hello@hannobraun.com>
Date: Wed, 9 Apr 2025 11:49:35 +0200
Subject: [PATCH] Add `CurveGeometry::project_point`

---
 experiments/2025-03-18/src/geometry/curve.rs       | 5 +++++
 experiments/2025-03-18/src/geometry/swept_curve.rs | 2 +-
 2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/experiments/2025-03-18/src/geometry/curve.rs b/experiments/2025-03-18/src/geometry/curve.rs
index 9f3898c1c..2beeacefa 100644
--- a/experiments/2025-03-18/src/geometry/curve.rs
+++ b/experiments/2025-03-18/src/geometry/curve.rs
@@ -2,6 +2,7 @@ use fj_math::{Line, Point, Transform, Vector};
 
 pub trait CurveGeometry {
     fn point_from_local(&self, point: Point<1>) -> Point<3>;
+    fn project_point(&self, point: Point<3>) -> Point<1>;
     fn translate(&self, offset: Vector<3>) -> Box<dyn CurveGeometry>;
 }
 
@@ -10,6 +11,10 @@ impl CurveGeometry for Line<3> {
         self.point_from_line_coords(point)
     }
 
+    fn project_point(&self, point: Point<3>) -> Point<1> {
+        self.point_to_line_coords(point)
+    }
+
     fn translate(&self, offset: Vector<3>) -> Box<dyn CurveGeometry> {
         let translated = self.transform(&Transform::translation(offset));
         Box::new(translated)
diff --git a/experiments/2025-03-18/src/geometry/swept_curve.rs b/experiments/2025-03-18/src/geometry/swept_curve.rs
index 685901ed8..30dddfc0f 100644
--- a/experiments/2025-03-18/src/geometry/swept_curve.rs
+++ b/experiments/2025-03-18/src/geometry/swept_curve.rs
@@ -25,7 +25,7 @@ impl SweptCurve {
     pub fn project_point(&self, point: impl Into<Point<3>>) -> Point<2> {
         let point = point.into();
 
-        let u = self.curve.point_to_line_coords(point);
+        let u = self.curve.project_point(point);
         let v = {
             let origin = self.curve.point_from_line_coords(u);
             let line = Line::from_origin_and_direction(origin, self.path);