From 28dfb97e089c060f71ae08f202169f1bdff14a64 Mon Sep 17 00:00:00 2001
From: Russell Johnson <47639332+Russ4262@users.noreply.github.com>
Date: Wed, 5 Jan 2022 21:32:57 -0600
Subject: [PATCH] Path: Fix open edge zero value start point

forum mention at https://forum.freecadweb.org/viewtopic.php?f=15&t=64882
This fix applies a small value to start points for open edges when either the x or y start point value is roughly zero.
---
 src/Mod/Path/PathScripts/PathAreaOp.py | 16 ++++++++++++----
 1 file changed, 12 insertions(+), 4 deletions(-)

diff --git a/src/Mod/Path/PathScripts/PathAreaOp.py b/src/Mod/Path/PathScripts/PathAreaOp.py
index 876699cc18..ef4fc90538 100644
--- a/src/Mod/Path/PathScripts/PathAreaOp.py
+++ b/src/Mod/Path/PathScripts/PathAreaOp.py
@@ -33,6 +33,7 @@ from lazy_loader.lazy_loader import LazyLoader
 
 Draft = LazyLoader("Draft", globals(), "Draft")
 Part = LazyLoader("Part", globals(), "Part")
+PathGeom = LazyLoader("PathScripts.PathGeom", globals(), "PathScripts.PathGeom")
 
 
 __title__ = "Base class for PathArea based operations."
@@ -313,11 +314,18 @@ class ObjectOp(PathOp.ObjectOp):
                 pathParams["preamble"] = False
 
                 if self.endVector is None:
-                    V = hWire.Wires[0].Vertexes
-                    lv = len(V) - 1
-                    pathParams["start"] = FreeCAD.Vector(V[0].X, V[0].Y, V[0].Z)
+                    verts = hWire.Wires[0].Vertexes
+                    idx = 0
                     if obj.Direction == "CCW":
-                        pathParams["start"] = FreeCAD.Vector(V[lv].X, V[lv].Y, V[lv].Z)
+                        idx = len(verts) - 1
+                    x = verts[idx].X
+                    y = verts[idx].Y
+                    # Zero start value adjustments for Path.fromShapes() bug
+                    if PathGeom.isRoughly(x, 0.0):
+                        x = 0.00001
+                    if PathGeom.isRoughly(y, 0.0):
+                        y = 0.00001
+                    pathParams["start"] = FreeCAD.Vector(x, y, verts[0].Z)
                 else:
                     pathParams["start"] = self.endVector