fixed objects without Dir fort SVG export

MultiExport.FCMacro

@@ -210,30 +210,51 @@ class WindowDialog():
 
 # -------- END -------- #
 
-	def searchDir(self, obj, xres, yres, zres):
+	def getLargestFaceDir(self, obj):
-		x, y, z = xres, yres, zres
+		if not hasattr(obj, "Shape") or not obj.Shape.Faces:
+			return None
 
-		if hasattr(obj, "Dir"):
+		maxArea = 0.0
-			if obj.Dir.x != 0.0:
+		largestFace = None
-				x = obj.Dir.x
-			if obj.Dir.y != 0.0:
-				y = obj.Dir.y
-			if obj.Dir.z != 0.0:
-				z = obj.Dir.z
 
-			if not hasattr(obj, "Objects"):
+		for face in obj.Shape.Faces:
-				return FreeCAD.Vector(x, y, z)
+			area = face.Area
-			else:
+			if area > maxArea:
-				res = FreeCAD.Vector(x, y, z)
+				maxArea = area
-				for i in obj.Objects:
+				largestFace = face
-					res = self.searchDir(i, x, y, z)
-				return res
 
-		elif hasattr(obj, "Objects"):
+		if largestFace:
-			res = FreeCAD.Vector(x, y, z)
+			# Get normal at center of face (parametric center)
-			for i in obj.Objects:
+			u, v = largestFace.Surface.parameter(largestFace.CenterOfMass)
-				res = self.searchDir(i, x, y, z)
+			normal = largestFace.normalAt(u, v)
-			return res
+			return normal.normalize()
+
+		return None
+
+	# def searchDir(self, obj, xres, yres, zres):
+	# 	x, y, z = xres, yres, zres
+
+	# 	if hasattr(obj, "Dir"):
+	# 		if obj.Dir.x != 0.0:
+	# 			x = obj.Dir.x
+	# 		if obj.Dir.y != 0.0:
+	# 			y = obj.Dir.y
+	# 		if obj.Dir.z != 0.0:
+	# 			z = obj.Dir.z
+
+	# 		if not hasattr(obj, "Objects"):
+	# 			return FreeCAD.Vector(x, y, z)
+	# 		else:
+	# 			res = FreeCAD.Vector(x, y, z)
+	# 			for i in obj.Objects:
+	# 				res = self.searchDir(i, x, y, z)
+	# 			return res
+			
+	# 	elif hasattr(obj, "Objects"):
+	# 		res = FreeCAD.Vector(x, y, z)
+	# 		for i in obj.Objects:
+	# 			res = self.searchDir(i, x, y, z)
+	# 		return res
 
 	def exportSVG(self, isCalepinage):
 		plateLength = self.form.doubleSpinBoxLength.value()
@@ -255,7 +276,12 @@ class WindowDialog():
 					break
 
 			for _ in range(count):
-				vector = self.searchDir(obj, 0, 0, 0)
+				if hasattr(obj, "Dir"):
+					vector = FreeCAD.Vector(obj.Dir.x, obj.Dir.y, obj.Dir.z)
+				else:
+					vector = self.getLargestFaceDir(obj)
+
+				# vector = self.searchDir(obj, 0, 0, 0)
 				sv0 = Draft.make_shape2dview(obj, vector)
 
 				FreeCAD.ActiveDocument.recompute()