Prevent endless loop through negative step down values in engraver.

2019-09-06 21:44:23 -07:00
parent 83dcc5f92c
commit 4ec9f7e281
1 changed files with 5 additions and 1 deletions
--- a/src/Mod/Path/PathScripts/PathEngraveBase.py
+++ b/src/Mod/Path/PathScripts/PathEngraveBase.py
@@ -53,10 +53,14 @@ class ObjectOp(PathOp.ObjectOp):
        zValues = []
        if obj.StepDown.Value != 0:
            z = obj.StartDepth.Value - obj.StepDown.Value
+            stepdown = obj.StepDown.Value
+            if stepdown < 0:
+                stepdown = -stepdown

            while z > obj.FinalDepth.Value:
                zValues.append(z)
-                z -= obj.StepDown.Value
+                z -= stepdown
+
        zValues.append(obj.FinalDepth.Value)
        return zValues