From d3d6ddc2ca4a1d8be33dcb453416025f1999e389 Mon Sep 17 00:00:00 2001
From: simaQ <sima.zhang1990@gmail.com>
Date: Tue, 8 May 2018 11:50:55 +0800
Subject: [PATCH] fix: getSnapRecords() - pick data more accurate in pie chart.

---
 src/geom/base.js          | 17 ++++++++++-------
 test/bug/issue-67-spec.js |  7 ++++---
 2 files changed, 14 insertions(+), 10 deletions(-)

diff --git a/src/geom/base.js b/src/geom/base.js
index f6803012e..df72507e8 100644
--- a/src/geom/base.js
+++ b/src/geom/base.js
@@ -675,13 +675,16 @@ class Geom extends Base {
 
     // 特别针对饼图做处理
     if (this.hasAdjust('stack') && coord.isPolar && coord.transposed && xScale.values.length === 1) {
-      let yValue = yScale.invert(invertPoint.y);
-      yValue = self._getSnap(yScale, yValue, tmp);
-      tmp.forEach(function(obj) {
-        if (Util.isArray(yValue) ? obj[FIELD_ORIGIN_Y].toString() === yValue.toString() : obj[FIELD_ORIGIN_Y] === yValue) {
-          rst.push(obj);
-        }
-      });
+      if (invertPointX >= 0 && invertPointX <= 1) { // 精确拾取
+        let yValue = yScale.invert(invertPoint.y);
+        yValue = self._getSnap(yScale, yValue, tmp);
+        tmp.forEach(obj => {
+          if (Util.isArray(yValue) ? obj[FIELD_ORIGIN_Y].toString() === yValue.toString() : obj[FIELD_ORIGIN_Y] === yValue) {
+            rst.push(obj);
+          }
+        });
+      }
+
     } else {
       rst = tmp;
     }
diff --git a/test/bug/issue-67-spec.js b/test/bug/issue-67-spec.js
index 8b9b5cce5..787287e65 100644
--- a/test/bug/issue-67-spec.js
+++ b/test/bug/issue-67-spec.js
@@ -57,13 +57,14 @@ describe('getSnapRecords', () => {
 
     let records;
     canvas.onclick = ev => {
-      const point = chart.get('canvas').getPointByClient(ev.clientX, ev.clientY);
+      const point = F2.Util.getRelativePosition({ x: ev.clientX, y: ev.clientY }, chart.get('canvas'));
       records = chart.getSnapRecords(point);
+      console.log(records);
     };
 
     gestureSimulator(canvas, 'click', {
-      clientX: 231,
-      clientY: 61
+      clientX: 218,
+      clientY: 52
     });
 
     setTimeout(function() {