From 662915c805b7f152ae90f686bd1c7bb5b63a60cf Mon Sep 17 00:00:00 2001
From: Justin Lin <justin.sdk@gmail.com>
Date: Sun, 25 Apr 2021 17:54:05 +0800
Subject: [PATCH] add tri_circumcenter

---
 src/triangle/tri_circumcenter.scad | 15 +++++++++++++++
 src/triangle/tri_circumcircle.scad | 20 --------------------
 2 files changed, 15 insertions(+), 20 deletions(-)
 create mode 100644 src/triangle/tri_circumcenter.scad
 delete mode 100644 src/triangle/tri_circumcircle.scad

diff --git a/src/triangle/tri_circumcenter.scad b/src/triangle/tri_circumcenter.scad
new file mode 100644
index 00000000..93d24079
--- /dev/null
+++ b/src/triangle/tri_circumcenter.scad
@@ -0,0 +1,15 @@
+function tri_circumcenter(shape_pts) =
+   let(
+      p0 = shape_pts[0],
+      p1 = shape_pts[1],
+      p2 = shape_pts[2],
+      v0 = p1 - p0,
+      d0 = (p1 + p0) / 2 * v0,
+      v1 = p2 - p1,  
+      d1 = (p2 + p1) / 2 * v1,
+      det = -cross(v0 , v1)
+   )
+   det == 0 ? undef : [
+       (d1 * v0[1] - d0 * v1[1]) / det,
+       (d0 * v1[0] - d1 * v0[0]) / det
+   ];
\ No newline at end of file
diff --git a/src/triangle/tri_circumcircle.scad b/src/triangle/tri_circumcircle.scad
deleted file mode 100644
index d87e9e8b..00000000
--- a/src/triangle/tri_circumcircle.scad
+++ /dev/null
@@ -1,20 +0,0 @@
-function tri_circumcircle(shape_pts) =
-   let(
-      p0 = shape_pts[0],
-      p1 = shape_pts[1],
-      p2 = shape_pts[2],
-      v0 = p1 - p0,
-      d0 = (p1 + p0) / 2 * v0,
-      v1 = p2 - p1,  
-      d1 = (p2 + p1) / 2 * v1,
-      det = -cross(v0 , v1)
-   )
-   det == 0 ? undef : 
-             let(
-                 x = (d1 * v0[1] - d0 * v1[1]) / det,
-                 y = (d0 * v1[0] - d1 * v0[0]) / det,
-                 center = [x, y],
-                 v = p0 - center,
-                 r = norm(v)
-             )
-             [center, r];
\ No newline at end of file