From da4426cb9aa855d366cf2930f28a0e17e4757c5e Mon Sep 17 00:00:00 2001
From: Living <livincentzhang@gmail.com>
Date: Wed, 28 Sep 2016 19:41:15 +0800
Subject: [PATCH] change the result constraint of maker.center.equalTo(CGPoint)
 to based on the original point of superview (#336)

* change center.equalTo

* fix logic
---
 Source/Constraint.swift | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/Source/Constraint.swift b/Source/Constraint.swift
index 7324c59..e5086c1 100644
--- a/Source/Constraint.swift
+++ b/Source/Constraint.swift
@@ -115,7 +115,11 @@ public class Constraint {
                         layoutToAttribute = layoutToAttributes[0]
                     }
                 } else {
-                    layoutToAttribute = layoutFromAttribute
+                    if self.to.target == nil && (layoutFromAttribute == .centerX || layoutFromAttribute == .centerY) {
+                        layoutToAttribute = layoutFromAttribute == .centerX ? .left : .top
+                    } else {
+                        layoutToAttribute = layoutFromAttribute
+                    }
                 }
             #else
                 if self.from.attributes == self.to.attributes {