From 7dbfe91b4b31b489d5d222169116bcb783a084b3 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Bruno=20Perdig=C3=A3o?= <bruno@brunopo.com>
Date: Mon, 23 Dec 2024 17:48:24 -0300
Subject: [PATCH] Allow `intersect_edges_v2` to work with 2d vectors.

---
 src/bonsai/bonsai/tool/cad.py | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/src/bonsai/bonsai/tool/cad.py b/src/bonsai/bonsai/tool/cad.py
index 3ba3aaec59..36d97fbd09 100644
--- a/src/bonsai/bonsai/tool/cad.py
+++ b/src/bonsai/bonsai/tool/cad.py
@@ -196,9 +196,14 @@ class Cad:
         # in orthogonal view
         # https://en.wikipedia.org/wiki/Skew_lines#Nearest_points
 
+        is_2d = False
         # Starting and ending points
         P1, P1_end = edge1
         P2, P2_end = edge2
+        if len(P1) == 2:
+            is_2d = True
+            P1, P1_end = P1.to_3d(), P1_end.to_3d()
+            P2, P2_end = P2.to_3d(), P2_end.to_3d()
 
         # Directions
         d1 = (P1_end - P1).normalized()
@@ -207,7 +212,7 @@ class Cad:
         n = d1.cross(d2)
 
         # if n is zero, lines are parallel
-        if n.length == 0:
+        if abs(n.length) < 1e-6:
             return None, None
 
         n2 = d2.cross(n)
@@ -218,7 +223,10 @@ class Cad:
 
         C2 = P2 + ((P1 - P2).dot(n1) / (d2.dot(n1))) * d2
 
-        return C1, C2
+        if is_2d:
+            return C1.to_2d(), C2.to_2d()
+        else:
+            return C1, C2
 
     @classmethod
     def get_intersection(cls, edge1, edge2):