From 4c61153bd4602add6cf8fd5621954b47e84cba2b Mon Sep 17 00:00:00 2001
From: Jan <development@iconexperience.com>
Date: Wed, 20 Jul 2016 16:32:20 +0200
Subject: [PATCH 1/2] Improve fat line clipping to fix #1088

Only alternate curves in addCurveIntersections() if interval on other curve is not tight enough yet.
---
 src/path/Curve.js | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/path/Curve.js b/src/path/Curve.js
index de49a176..defbfe1e 100644
--- a/src/path/Curve.js
+++ b/src/path/Curve.js
@@ -1709,9 +1709,15 @@ new function() { // Scope for intersection using bezier fat-line clipping
                             u, uMax, tMinNew, tMaxNew, !flip, recursion, calls);
                 }
             } else { // Iterate
-                calls = addCurveIntersections(
-                        v2, v1, c2, c1, locations, param,
+                if (uMax - uMin >= /*#=*/Numerical.CLIPPING_EPSILON) {
+                    calls = addCurveIntersections(v2, v1, c2, c1, locations, param,
                         uMin, uMax, tMinNew, tMaxNew, !flip, recursion, calls);
+                } else {
+                    // The interval on the other curve is already tight enough,
+                    // therefore we keep iterating on the same curve.
+                    calls = addCurveIntersections(v1, v2, c1, c2, locations, param,
+                        tMinNew, tMaxNew, uMin, uMax, flip, recursion, calls);
+                }
             }
         }
         return calls;

From 381e92501a5eb5e9dd0c27fe7ebed29f2df4b1fc Mon Sep 17 00:00:00 2001
From: Jan <development@iconexperience.com>
Date: Wed, 20 Jul 2016 16:33:13 +0200
Subject: [PATCH 2/2] Add test for #1088

---
 test/tests/Path_Intersections.js | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/test/tests/Path_Intersections.js b/test/tests/Path_Intersections.js
index 3b99b036..4d37c09f 100644
--- a/test/tests/Path_Intersections.js
+++ b/test/tests/Path_Intersections.js
@@ -152,3 +152,17 @@ test('#1074', function() {
         { point: { x: 349.98644, y: 126.84 } , index: 4, time: 0, crossing: true }
     ]);
 });
+
+test('#1088', function() {
+    var path1 = new paper.Path({segments:[
+        [314.48576574722523, 308.77472829145444, 8.651222275575492, -2.220498935022104, -8.651222275575492, 2.220498935022105],
+        [290.40724577164383, 302.0497467665447, 6.2486166726329975, 6.3819316872198515, -0.012648799703259704, -0.012918663419550348]
+    ], closed:false});
+    var path2 = new paper.Path({segments:[
+        [328.02746577749963, 300.1256389868014, 7.902769748335459, -10.046794724901815, -2.5352164811920375e-11, 3.2230218494078144e-11],
+        [309.7443037372522, 309.63202128991924, 5.4001247917767614e-11, -2.9558577807620168e-12, -6.666656713343759, 0.3629571641783996]
+    ], closed:false});
+    testIntersection(path1.getIntersections(path2), [
+        { point: { x: 309.99726, y: 309.5004975367957 }, index: 0, time: 0.17182, crossing: true }
+    ]);
+});