From 1c6c26fd48ec774d2a93f18ea0113546d58df825 Mon Sep 17 00:00:00 2001
From: Matthew Petroff <matthew@mpetroff.net>
Date: Mon, 17 Jun 2019 17:51:08 -0400
Subject: [PATCH] Remove `requestAnimationFrame` shim, dropping support for
 some older browsers.

---
 readme.md                       | 17 ++++-------------
 src/js/RequestAnimationFrame.js | 22 ----------------------
 src/standalone/pannellum.htm    |  1 -
 utils/build/build.py            |  2 --
 4 files changed, 4 insertions(+), 38 deletions(-)
 delete mode 100644 src/js/RequestAnimationFrame.js

diff --git a/readme.md b/readme.md
index 9c83797..d7df7ad 100644
--- a/readme.md
+++ b/readme.md
@@ -27,25 +27,16 @@ Examples using both the minified version and the version in the `src` directory
 
 ## Browser Compatibility
 
-Since Pannellum is built with recent web standards, it requires a modern browser to function.
+Since Pannellum is built with web standards, it requires a modern browser to function.
 
 #### Full support (with appropriate graphics drivers):
-* Firefox 10+
-* Chrome 15+
+* Firefox 23+
+* Chrome 24+
 * Safari 8+
 * Internet Explorer 11+
 * Edge
 
-#### Almost full support (no full screen):
-* Firefox 4+
-* Chrome 9+
-
-#### Partial support (WebGL support must first be enabled in preferences)
-
-* Safari 5.1+
-
-#### No support:
-Internet Explorer 10 and previous
+The support list is based on feature support. As only recent browsers are tested, there may be regressions in older browsers.
 
 #### Not officially supported:
 
diff --git a/src/js/RequestAnimationFrame.js b/src/js/RequestAnimationFrame.js
deleted file mode 100644
index f07d729..0000000
--- a/src/js/RequestAnimationFrame.js
+++ /dev/null
@@ -1,22 +0,0 @@
-/**
- * Provides requestAnimationFrame in a cross browser way.
- * http://paulirish.com/2011/requestanimationframe-for-smart-animating/
- */
-
-if ( !window.requestAnimationFrame ) {
-
-    window.requestAnimationFrame = ( function() {
-
-        return window.webkitRequestAnimationFrame ||
-        window.mozRequestAnimationFrame ||
-        window.oRequestAnimationFrame ||
-        window.msRequestAnimationFrame ||
-        function( /* function FrameRequestCallback */ callback, /* DOMElement Element */ element ) {
-
-            window.setTimeout( callback, 1000 / 60 );
-
-        };
-
-    } )();
-
-}
diff --git a/src/standalone/pannellum.htm b/src/standalone/pannellum.htm
index dc4c5f2..1ff38a2 100644
--- a/src/standalone/pannellum.htm
+++ b/src/standalone/pannellum.htm
@@ -16,7 +16,6 @@
   </noscript>
 </div>
 <script type="text/javascript" src="../js/libpannellum.js"></script>
-<script type="text/javascript" src="../js/RequestAnimationFrame.js"></script>
 <script type="text/javascript" src="../js/pannellum.js"></script>
 <script type="text/javascript" src="standalone.js"></script>
 </body>
diff --git a/utils/build/build.py b/utils/build/build.py
index 64cc64c..d5e3945 100755
--- a/utils/build/build.py
+++ b/utils/build/build.py
@@ -8,7 +8,6 @@ import urllib.parse
 
 JS = [
 'js/libpannellum.js',
-'js/RequestAnimationFrame.js',
 'js/pannellum.js',
 ]
 
@@ -132,7 +131,6 @@ def build(files, css, html, filename, release=False):
     html = merge(html)
     html = html.replace('<link type="text/css" rel="Stylesheet" href="../css/pannellum.css"/>','<style type="text/css">' + standalone_css + '</style>')
     html = html.replace('<script type="text/javascript" src="../js/libpannellum.js"></script>','')
-    html = html.replace('<script type="text/javascript" src="../js/RequestAnimationFrame.js"></script>','')
     html = html.replace('<script type="text/javascript" src="../js/pannellum.js"></script>','<script type="text/javascript">' + standalone_js + '</script>')
     html = html.replace('<script type="text/javascript" src="standalone.js"></script>','')
     html = html.replace('<link type="text/css" rel="Stylesheet" href="standalone.css"/>', '')