From 2ecbade65a578918ae75b2e2cd3146a624735f94 Mon Sep 17 00:00:00 2001
From: simaQ <sima.zhang1990@gmail.com>
Date: Tue, 31 Jul 2018 19:00:35 +0800
Subject: [PATCH] fix: fix the problem of zero judgment.

---
 src/interaction/pan.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/src/interaction/pan.js b/src/interaction/pan.js
index b35defe84..8623e0634 100644
--- a/src/interaction/pan.js
+++ b/src/interaction/pan.js
@@ -130,11 +130,11 @@ class Pan extends Interaction {
     let newMin = flag === 'x' ? min - panValue : min + panValue;
 
     const limitRange = this.limitRange;
-    if (limitRange[field] && limitRange[field].min && newMin <= limitRange[field].min) {
+    if (limitRange[field] && !Util.isNil(limitRange[field].min) && newMin <= limitRange[field].min) {
       newMin = limitRange[field].min;
       newMax = (max - min) + newMin;
     }
-    if (limitRange[field] && limitRange[field].max && newMax >= limitRange[field].max) {
+    if (limitRange[field] && !Util.isNil(limitRange[field].max) && newMax >= limitRange[field].max) {
       newMax = limitRange[field].max;
       newMin = newMax - (max - min);
     }