From 096d477893d0069628e253cd0f8d4076335ef346 Mon Sep 17 00:00:00 2001
From: Charlotte Weaver <charlottesweaver@gmail.com>
Date: Wed, 27 Mar 2019 21:02:31 -0700
Subject: [PATCH] use Math.abs when calculating lasso area (#673)

---
 client/src/components/graph/graph.js | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/client/src/components/graph/graph.js b/client/src/components/graph/graph.js
index 20649564..fb898547 100644
--- a/client/src/components/graph/graph.js
+++ b/client/src/components/graph/graph.js
@@ -397,7 +397,10 @@ class Graph extends React.Component {
     const minimumPolygoneArea = 10;
     const { dispatch } = this.props;
 
-    if (polygon.length < 3 || d3.polygonArea(polygon) < minimumPolygoneArea) {
+    if (
+      polygon.length < 3 ||
+      Math.abs(d3.polygonArea(polygon)) < minimumPolygoneArea
+    ) {
       // if less than three points, or super small area, treat as a clear selection.
       dispatch({ type: "lasso deselect" });
     } else {