Draft: re-added missing arcFrom2Pts function in DraftGeomUtils

src/Mod/Draft/DraftGeomUtils.py

@@ -2438,6 +2438,27 @@ def circleFrom2PointsRadius(p1, p2, radius):
     else: return None
 
 
+def arcFrom2Pts(firstPt,lastPt,center,axis=None):
+
+    '''Builds an arc with center and 2 points, can be oriented with axis'''
+
+    radius1  = firstPt.sub(center).Length
+    radius2  = lastPt.sub(center).Length
+    if round(radius1-radius2,4) != 0 : # (PREC = 4 = same as Part Module),  Is it possible ?
+        return None
+
+    thirdPt = Vector(firstPt.sub(center).add(lastPt).sub(center))
+    thirdPt.normalize()
+    thirdPt.scale(radius1,radius1,radius1)
+    thirdPt = thirdPt.add(center)
+    newArc = Part.Edge(Part.Arc(firstPt,thirdPt,lastPt))
+    if not axis is None and newArc.Curve.Axis.dot(axis) < 0 :
+        thirdPt = thirdPt.sub(center)
+        thirdPt.scale(-1,-1,-1)
+        thirdPt = thirdPt.add(center)
+        newArc = Part.Edge(Part.Arc(firstPt,thirdPt,lastPt))
+    return newArc
+
 
 #############################33 to include