From c0d4db9ae48eb9a8d83603ce448bfbd5bfa44d87 Mon Sep 17 00:00:00 2001
From: Hanno Braun <hello@hannobraun.com>
Date: Wed, 31 Jul 2024 19:55:35 +0200
Subject: [PATCH] Add `Triangle::point_from_barycentric_coords`

---
 crates/fj-math/src/triangle.rs | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/crates/fj-math/src/triangle.rs b/crates/fj-math/src/triangle.rs
index 92cbbb0fa..2780a410d 100644
--- a/crates/fj-math/src/triangle.rs
+++ b/crates/fj-math/src/triangle.rs
@@ -43,6 +43,16 @@ impl<const D: usize> Triangle<D> {
         area > Scalar::default_epsilon()
     }
 
+    /// Convert barycentric coordinates to a point
+    pub fn point_from_barycentric_coords(
+        &self,
+        [wa, wb, wc]: [Scalar; 3],
+    ) -> Point<D> {
+        let [a, b, c] = self.points;
+        let coords = a.coords * wa + b.coords * wb + c.coords * wc;
+        Point { coords }
+    }
+
     /// Normalize the triangle
     ///
     /// Returns a new `Triangle` instance with the same points, but the points