From 517e1feae8fcfbef7830177a6ce256f32bc09d8b Mon Sep 17 00:00:00 2001
From: Antoine Vandecreme <avandecreme@capitainetrain.com>
Date: Sun, 24 Dec 2017 10:57:29 +0100
Subject: [PATCH] Fix getTileAtPoint epsilon precision

Fix #1362
---
 src/tilesource.js          |  2 +-
 test/modules/tilesource.js | 11 +++++++++++
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/tilesource.js b/src/tilesource.js
index 84aa5a82..66badc9c 100644
--- a/src/tilesource.js
+++ b/src/tilesource.js
@@ -360,7 +360,7 @@ $.TileSource.prototype = {
         if (point.x >= 1) {
             x = this.getNumTiles(level).x - 1;
         }
-        var EPSILON = 1e-16;
+        var EPSILON = 1e-15;
         if (point.y >= 1 / this.aspectRatio - EPSILON) {
             y = this.getNumTiles(level).y - 1;
         }
diff --git a/test/modules/tilesource.js b/test/modules/tilesource.js
index bac637c8..2c1a0f42 100644
--- a/test/modules/tilesource.js
+++ b/test/modules/tilesource.js
@@ -107,6 +107,17 @@
             maxLevel: 0,
         });
         assertTileAtPoint(0, new OpenSeadragon.Point(1, 1239 / 4036), new OpenSeadragon.Point(0, 0));
+
+        // Test for issue #1362
+        tileSource = new OpenSeadragon.TileSource({
+            width: 2000,
+            height: 3033,
+            tileWidth: 2000,
+            tileHeight: 3033,
+            tileOverlap: 0,
+            maxLevel: 0,
+        });
+        assertTileAtPoint(0, new OpenSeadragon.Point(1, 3033 / 2000), new OpenSeadragon.Point(0, 0));
     });
 
 }());