From 7a7bf3ce0584cddbd4763e919a5302a11c78830f Mon Sep 17 00:00:00 2001
From: David Manthey <david.manthey@kitware.com>
Date: Mon, 27 Jun 2022 08:30:43 -0400
Subject: [PATCH] fix: Guard accessing a quad feature.

---
 src/canvas/tileLayer.js      | 4 +++-
 src/webgl/pixelmapFeature.js | 4 +++-
 src/webgl/tileLayer.js       | 4 +++-
 3 files changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/canvas/tileLayer.js b/src/canvas/tileLayer.js
index 634d41ad79..816ec3e4ce 100644
--- a/src/canvas/tileLayer.js
+++ b/src/canvas/tileLayer.js
@@ -69,7 +69,9 @@ var canvas_tileLayer = function () {
    */
   this._update = function (request) {
     s_update.call(m_this, request);
-    m_quadFeature.nearestPixel(m_this.nearestPixel());
+    if (m_quadFeature && m_quadFeature.nearestPixel) {
+      m_quadFeature.nearestPixel(m_this.nearestPixel());
+    }
     m_this._addBaseQuadToTiles(m_quadFeature, m_tiles);
     return m_this;
   };
diff --git a/src/webgl/pixelmapFeature.js b/src/webgl/pixelmapFeature.js
index 786973dbb7..aff1d3d541 100644
--- a/src/webgl/pixelmapFeature.js
+++ b/src/webgl/pixelmapFeature.js
@@ -184,7 +184,9 @@ var webgl_pixelmapFeature = function (arg) {
 
   if (arg.quadFeature) {
     m_quadFeature = arg.quadFeature;
-    m_quadFeature.nearestPixel(true);
+    if (m_quadFeature.nearestPixel) {
+      m_quadFeature.nearestPixel(true);
+    }
   }
   this._init(arg);
   return this;
diff --git a/src/webgl/tileLayer.js b/src/webgl/tileLayer.js
index e0d17fb92c..b27cece10e 100644
--- a/src/webgl/tileLayer.js
+++ b/src/webgl/tileLayer.js
@@ -171,7 +171,9 @@ var webgl_tileLayer = function () {
    */
   this._update = function (request) {
     s_update.call(m_this, request);
-    m_quadFeature.nearestPixel(m_this.nearestPixel());
+    if (m_quadFeature && m_quadFeature.nearestPixel) {
+      m_quadFeature.nearestPixel(m_this.nearestPixel());
+    }
     m_this._addBaseQuadToTiles(m_quadFeature, m_tiles);
     return m_this;
   };