From b37b8cc495cae195101da22de5bf9ab96f39adca Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?J=C3=BCrg=20Lehni?= <juerg@scratchdisk.com>
Date: Sat, 24 Sep 2016 14:28:43 -0400
Subject: [PATCH] Improve reliability of Curve.getIntersection()

Reduce epsilon when checking against curve end points from GEOMETRIC_EPSILON to EPSILON.

Coses #1174
---
 src/path/Curve.js                |  2 +-
 test/tests/Path_Intersections.js | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/src/path/Curve.js b/src/path/Curve.js
index 620458d3..544157cb 100644
--- a/src/path/Curve.js
+++ b/src/path/Curve.js
@@ -1908,7 +1908,7 @@ new function() { // Scope for intersection using bezier fat-line clipping
             // a little optimization, we can scale the handles with 0.75
             // before calculating the control bounds and still be sure that
             // the curve is fully contained.
-            var epsilon = /*#=*/Numerical.GEOMETRIC_EPSILON,
+            var epsilon = /*#=*/Numerical.EPSILON,
                 c1p1x = v1[0], c1p1y = v1[1],
                 c1p2x = v1[6], c1p2y = v1[7],
                 c2p1x = v2[0], c2p1y = v2[1],
diff --git a/test/tests/Path_Intersections.js b/test/tests/Path_Intersections.js
index 754c2507..f36bf2a7 100644
--- a/test/tests/Path_Intersections.js
+++ b/test/tests/Path_Intersections.js
@@ -172,3 +172,23 @@ test('#1088', function() {
         { point: { x: 309.99726, y: 309.5004975367957 }, index: 0, time: 0.17182, crossing: true }
     ]);
 });
+
+test('#1174', function() {
+    var path1 = new paper.Path({
+        segments: [
+            [20, 60],
+            [20, 100],
+            [150, 100]
+        ]
+    });
+    var path2 = new paper.Path({
+        segments: [
+            [20, 140],
+            [20, 100.00000001],
+            [150, 98]
+        ]
+    });
+    testIntersection(path1.getIntersections(path2), [
+        { point: { x: 20, y: 100 }, index: 1, time: 0.00004, crossing: true }
+    ]);
+})