From 6f9a59db21f7bb6e34a8bedd4aaa6980e2c35080 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=C3=89tienne=20T=C3=A9treault-Pinard?= <etienne@plot.ly>
Date: Fri, 2 Aug 2019 16:57:26 -0400
Subject: [PATCH] return early in closeBoundaries when constraint level have
 edgepath(s)

... in this case joinAllPaths does enough already to render the
    constraint contours correctly.
---
 src/traces/contour/close_boundaries.js | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/traces/contour/close_boundaries.js b/src/traces/contour/close_boundaries.js
index b1fc71dbedc..601d8c24ad2 100644
--- a/src/traces/contour/close_boundaries.js
+++ b/src/traces/contour/close_boundaries.js
@@ -31,6 +31,9 @@ module.exports = function(pathinfo, contours) {
             // after convertToConstraints, pathinfo has length=0
             pi0.prefixBoundary = false;
 
+            // joinAllPaths does enough already when edgepaths are present
+            if(pi0.edgepaths.length) return;
+
             var na = pi0.x.length;
             var nb = pi0.y.length;
             var boundaryMax = -Infinity;
@@ -60,7 +63,7 @@ module.exports = function(pathinfo, contours) {
                     break;
                 case '<':
                     if(contoursValue < boundaryMin ||
-                        (!pi0.edgepaths.length && pi0.starts.length && contoursValue === boundaryMin)) {
+                        (pi0.starts.length && contoursValue === boundaryMin)) {
                         pi0.prefixBoundary = true;
                     }
                     break;
@@ -68,7 +71,7 @@ module.exports = function(pathinfo, contours) {
                     v1 = Math.min(contoursValue[0], contoursValue[1]);
                     v2 = Math.max(contoursValue[0], contoursValue[1]);
                     if(v2 < boundaryMin || v1 > boundaryMax ||
-                        (!pi0.edgepaths.length && pi0.starts.length && v2 === boundaryMin)) {
+                        (pi0.starts.length && v2 === boundaryMin)) {
                         pi0.prefixBoundary = true;
                     }
                     break;