add tri_bisectors

src/experimental/tri_bisectors.scad

@@ -0,0 +1,10 @@
+use <experimental/convex_center_p.scad>;
+
+function tri_bisectors(points) = 
+    let(
+        orthocentre = convex_center_p(points),
+        m1 = (points[0] + points[1]) / 2,
+        m2 = (points[1] + points[2]) / 2,
+        m3 = (points[2] + points[0]) / 2
+    )
+    [[orthocentre, m1], [orthocentre, m2], [orthocentre, m3]];