From 7a3be864d05366d9601ba3ef4fc8181798e65b58 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Rog=C3=A9rio=20Brito?= <rbrito@ime.usp.br>
Date: Sat, 18 Jul 2015 18:13:01 -0300
Subject: [PATCH] Common: Fix indentation.
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Content-Type: text/plain; charset=UTF-8
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Some parts of the code had funky and inconsistent indentation.  This change
is trivial in the sense that it was automated by Emacs's indent-region
command.

This patch tries to make the indentation consistent with the standard of 4
spaces per level.

Signed-off-by: Rogério Brito <rbrito@ime.usp.br>
---
 Common/MV.js           | 293 +++++++++++++++++++++--------------------
 Common/initShaders2.js |  72 +++++-----
 Common/webgl-utils.js  | 174 ++++++++++++------------
 3 files changed, 269 insertions(+), 270 deletions(-)

diff --git a/Common/MV.js b/Common/MV.js
index 737b288..8960259 100644
--- a/Common/MV.js
+++ b/Common/MV.js
@@ -674,69 +674,69 @@ function printm(m)
     var i;
 
     if(m.length == 2)
-    for(i=0; i<m.length; i++)
-       console.log(m[i][0], m[i][1]);
+        for(i=0; i<m.length; i++)
+            console.log(m[i][0], m[i][1]);
     else if(m.length == 3)
-    for(i=0; i<m.length; i++)
-       console.log(m[i][0], m[i][1], m[i][2]);
+        for(i=0; i<m.length; i++)
+            console.log(m[i][0], m[i][1], m[i][2]);
     else if(m.length == 4)
-    for(i=0; i<m.length; i++)
-       console.log(m[i][0], m[i][1], m[i][2], m[i][3]);
+        for(i=0; i<m.length; i++)
+            console.log(m[i][0], m[i][1], m[i][2], m[i][3]);
 }
 // determinants
 
 function det2(m)
 {
 
-     return m[0][0]*m[1][1]-m[0][1]*m[1][0];
+    return m[0][0]*m[1][1]-m[0][1]*m[1][0];
 
 }
 
 function det3(m)
 {
-     var d = m[0][0]*m[1][1]*m[2][2]
-           + m[0][1]*m[1][2]*m[2][0]
-           + m[0][2]*m[2][1]*m[1][0]
-           - m[2][0]*m[1][1]*m[0][2]
-           - m[1][0]*m[0][1]*m[2][2]
-           - m[0][0]*m[1][2]*m[2][1]
-           ;
-     return d;
+    var d = m[0][0]*m[1][1]*m[2][2]
+            + m[0][1]*m[1][2]*m[2][0]
+            + m[0][2]*m[2][1]*m[1][0]
+            - m[2][0]*m[1][1]*m[0][2]
+            - m[1][0]*m[0][1]*m[2][2]
+            - m[0][0]*m[1][2]*m[2][1]
+    ;
+    return d;
 }
 
 function det4(m)
 {
-     var m0 = [
-         vec3(m[1][1], m[1][2], m[1][3]),
-         vec3(m[2][1], m[2][2], m[2][3]),
-         vec3(m[3][1], m[3][2], m[3][3])
-     ];
-     var m1 = [
-         vec3(m[1][0], m[1][2], m[1][3]),
-         vec3(m[2][0], m[2][2], m[2][3]),
-         vec3(m[3][0], m[3][2], m[3][3])
-     ];
-     var m2 = [
-         vec3(m[1][0], m[1][1], m[1][3]),
-         vec3(m[2][0], m[2][1], m[2][3]),
-         vec3(m[3][0], m[3][1], m[3][3])
-     ];
-     var m3 = [
-         vec3(m[1][0], m[1][1], m[1][2]),
-         vec3(m[2][0], m[2][1], m[2][2]),
-         vec3(m[3][0], m[3][1], m[3][2])
-     ];
-     return m[0][0]*det3(m0) - m[0][1]*det3(m1)
-         + m[0][2]*det3(m2) - m[0][3]*det3(m3);
+    var m0 = [
+        vec3(m[1][1], m[1][2], m[1][3]),
+        vec3(m[2][1], m[2][2], m[2][3]),
+        vec3(m[3][1], m[3][2], m[3][3])
+    ];
+    var m1 = [
+        vec3(m[1][0], m[1][2], m[1][3]),
+        vec3(m[2][0], m[2][2], m[2][3]),
+        vec3(m[3][0], m[3][2], m[3][3])
+    ];
+    var m2 = [
+        vec3(m[1][0], m[1][1], m[1][3]),
+        vec3(m[2][0], m[2][1], m[2][3]),
+        vec3(m[3][0], m[3][1], m[3][3])
+    ];
+    var m3 = [
+        vec3(m[1][0], m[1][1], m[1][2]),
+        vec3(m[2][0], m[2][1], m[2][2]),
+        vec3(m[3][0], m[3][1], m[3][2])
+    ];
+    return m[0][0]*det3(m0) - m[0][1]*det3(m1)
+        + m[0][2]*det3(m2) - m[0][3]*det3(m3);
 
 }
 
 function det(m)
 {
-     if(m.matrix != true) console.log("not a matrix");
-     if(m.length == 2) return det2(m);
-     if(m.length == 3) return det3(m);
-     if(m.length == 4) return det4(m);
+    if(m.matrix != true) console.log("not a matrix");
+    if(m.length == 2) return det2(m);
+    if(m.length == 3) return det3(m);
+    if(m.length == 4) return det4(m);
 }
 
 //---------------------------------------------------------
@@ -745,14 +745,14 @@ function det(m)
 
 function inverse2(m)
 {
-     var a = mat2();
-     var d = det2(m);
-     a[0][0] = m[1][1]/d;
-     a[0][1] = -m[0][1]/d;
-     a[1][0] = -m[1][0]/d;
-     a[1][1] = m[0][0]/d;
-     a.matrix = true;
-     return a;
+    var a = mat2();
+    var d = det2(m);
+    a[0][0] = m[1][1]/d;
+    a[0][1] = -m[0][1]/d;
+    a[1][0] = -m[1][0]/d;
+    a[1][1] = m[0][0]/d;
+    a.matrix = true;
+    return a;
 }
 
 function inverse3(m)
@@ -761,53 +761,53 @@ function inverse3(m)
     var d = det3(m);
 
     var a00 = [
-       vec2(m[1][1], m[1][2]),
-       vec2(m[2][1], m[2][2])
+        vec2(m[1][1], m[1][2]),
+        vec2(m[2][1], m[2][2])
     ];
     var a01 = [
-       vec2(m[1][0], m[1][2]),
-       vec2(m[2][0], m[2][2])
+        vec2(m[1][0], m[1][2]),
+        vec2(m[2][0], m[2][2])
     ];
     var a02 = [
-       vec2(m[1][0], m[1][1]),
-       vec2(m[2][0], m[2][1])
+        vec2(m[1][0], m[1][1]),
+        vec2(m[2][0], m[2][1])
     ];
     var a10 = [
-       vec2(m[0][1], m[0][2]),
-       vec2(m[2][1], m[2][2])
+        vec2(m[0][1], m[0][2]),
+        vec2(m[2][1], m[2][2])
     ];
     var a11 = [
-       vec2(m[0][0], m[0][2]),
-       vec2(m[2][0], m[2][2])
+        vec2(m[0][0], m[0][2]),
+        vec2(m[2][0], m[2][2])
     ];
     var a12 = [
-       vec2(m[0][0], m[0][1]),
-       vec2(m[2][0], m[2][1])
+        vec2(m[0][0], m[0][1]),
+        vec2(m[2][0], m[2][1])
     ];
     var a20 = [
-       vec2(m[0][1], m[0][2]),
-       vec2(m[1][1], m[1][2])
+        vec2(m[0][1], m[0][2]),
+        vec2(m[1][1], m[1][2])
     ];
     var a21 = [
-       vec2(m[0][0], m[0][2]),
-       vec2(m[1][0], m[1][2])
+        vec2(m[0][0], m[0][2]),
+        vec2(m[1][0], m[1][2])
     ];
     var a22 = [
-       vec2(m[0][0], m[0][1]),
-       vec2(m[1][0], m[1][1])
+        vec2(m[0][0], m[0][1]),
+        vec2(m[1][0], m[1][1])
     ];
 
-   a[0][0] = det2(a00)/d;
-   a[0][1] = -det2(a10)/d;
-   a[0][2] = det2(a20)/d;
-   a[1][0] = -det2(a01)/d;
-   a[1][1] = det2(a11)/d;
-   a[1][2] = -det2(a21)/d;
-   a[2][0] = det2(a02)/d;
-   a[2][1] = -det2(a12)/d;
-   a[2][2] = det2(a22)/d;
+    a[0][0] = det2(a00)/d;
+    a[0][1] = -det2(a10)/d;
+    a[0][2] = det2(a20)/d;
+    a[1][0] = -det2(a01)/d;
+    a[1][1] = det2(a11)/d;
+    a[1][2] = -det2(a21)/d;
+    a[2][0] = det2(a02)/d;
+    a[2][1] = -det2(a12)/d;
+    a[2][2] = det2(a22)/d;
 
-   return a;
+    return a;
 
 }
 
@@ -817,114 +817,115 @@ function inverse4(m)
     var d = det4(m);
 
     var a00 = [
-       vec3(m[1][1], m[1][2], m[1][3]),
-       vec3(m[2][1], m[2][2], m[2][3]),
-       vec3(m[3][1], m[3][2], m[3][3])
+        vec3(m[1][1], m[1][2], m[1][3]),
+        vec3(m[2][1], m[2][2], m[2][3]),
+        vec3(m[3][1], m[3][2], m[3][3])
     ];
     var a01 = [
-       vec3(m[1][0], m[1][2], m[1][3]),
-       vec3(m[2][0], m[2][2], m[2][3]),
-       vec3(m[3][0], m[3][2], m[3][3])
+        vec3(m[1][0], m[1][2], m[1][3]),
+        vec3(m[2][0], m[2][2], m[2][3]),
+        vec3(m[3][0], m[3][2], m[3][3])
     ];
     var a02 = [
-       vec3(m[1][0], m[1][1], m[1][3]),
-       vec3(m[2][0], m[2][1], m[2][3]),
-       vec3(m[3][0], m[3][1], m[3][3])
+        vec3(m[1][0], m[1][1], m[1][3]),
+        vec3(m[2][0], m[2][1], m[2][3]),
+        vec3(m[3][0], m[3][1], m[3][3])
     ];
     var a03 = [
-       vec3(m[1][0], m[1][1], m[1][2]),
-       vec3(m[2][0], m[2][1], m[2][2]),
-       vec3(m[3][0], m[3][1], m[3][2])
+        vec3(m[1][0], m[1][1], m[1][2]),
+        vec3(m[2][0], m[2][1], m[2][2]),
+        vec3(m[3][0], m[3][1], m[3][2])
     ];
     var a10 = [
-       vec3(m[0][1], m[0][2], m[0][3]),
-       vec3(m[2][1], m[2][2], m[2][3]),
-       vec3(m[3][1], m[3][2], m[3][3])
+        vec3(m[0][1], m[0][2], m[0][3]),
+        vec3(m[2][1], m[2][2], m[2][3]),
+        vec3(m[3][1], m[3][2], m[3][3])
     ];
     var a11 = [
-       vec3(m[0][0], m[0][2], m[0][3]),
-       vec3(m[2][0], m[2][2], m[2][3]),
-       vec3(m[3][0], m[3][2], m[3][3])
+        vec3(m[0][0], m[0][2], m[0][3]),
+        vec3(m[2][0], m[2][2], m[2][3]),
+        vec3(m[3][0], m[3][2], m[3][3])
     ];
     var a12 = [
-       vec3(m[0][0], m[0][1], m[0][3]),
-       vec3(m[2][0], m[2][1], m[2][3]),
-       vec3(m[3][0], m[3][1], m[3][3])
+        vec3(m[0][0], m[0][1], m[0][3]),
+        vec3(m[2][0], m[2][1], m[2][3]),
+        vec3(m[3][0], m[3][1], m[3][3])
     ];
     var a13 = [
-       vec3(m[0][0], m[0][1], m[0][2]),
-       vec3(m[2][0], m[2][1], m[2][2]),
-       vec3(m[3][0], m[3][1], m[3][2])
+        vec3(m[0][0], m[0][1], m[0][2]),
+        vec3(m[2][0], m[2][1], m[2][2]),
+        vec3(m[3][0], m[3][1], m[3][2])
     ];
     var a20 = [
-       vec3(m[0][1], m[0][2], m[0][3]),
-       vec3(m[1][1], m[1][2], m[1][3]),
-       vec3(m[3][1], m[3][2], m[3][3])
+        vec3(m[0][1], m[0][2], m[0][3]),
+        vec3(m[1][1], m[1][2], m[1][3]),
+        vec3(m[3][1], m[3][2], m[3][3])
     ];
     var a21 = [
-       vec3(m[0][0], m[0][2], m[0][3]),
-       vec3(m[1][0], m[1][2], m[1][3]),
-       vec3(m[3][0], m[3][2], m[3][3])
+        vec3(m[0][0], m[0][2], m[0][3]),
+        vec3(m[1][0], m[1][2], m[1][3]),
+        vec3(m[3][0], m[3][2], m[3][3])
     ];
     var a22 = [
-       vec3(m[0][0], m[0][1], m[0][3]),
-       vec3(m[1][0], m[1][1], m[1][3]),
-       vec3(m[3][0], m[3][1], m[3][3])
+        vec3(m[0][0], m[0][1], m[0][3]),
+        vec3(m[1][0], m[1][1], m[1][3]),
+        vec3(m[3][0], m[3][1], m[3][3])
     ];
     var a23 = [
-       vec3(m[0][0], m[0][1], m[0][2]),
-       vec3(m[1][0], m[1][1], m[1][2]),
-       vec3(m[3][0], m[3][1], m[3][2])
+        vec3(m[0][0], m[0][1], m[0][2]),
+        vec3(m[1][0], m[1][1], m[1][2]),
+        vec3(m[3][0], m[3][1], m[3][2])
     ];
 
     var a30 = [
-       vec3(m[0][1], m[0][2], m[0][3]),
-       vec3(m[1][1], m[1][2], m[1][3]),
-       vec3(m[2][1], m[2][2], m[2][3])
+        vec3(m[0][1], m[0][2], m[0][3]),
+        vec3(m[1][1], m[1][2], m[1][3]),
+        vec3(m[2][1], m[2][2], m[2][3])
     ];
     var a31 = [
-       vec3(m[0][0], m[0][2], m[0][3]),
-       vec3(m[1][0], m[1][2], m[1][3]),
-       vec3(m[2][0], m[2][2], m[2][3])
+        vec3(m[0][0], m[0][2], m[0][3]),
+        vec3(m[1][0], m[1][2], m[1][3]),
+        vec3(m[2][0], m[2][2], m[2][3])
     ];
     var a32 = [
-       vec3(m[0][0], m[0][1], m[0][3]),
-       vec3(m[1][0], m[1][1], m[1][3]),
-       vec3(m[2][0], m[2][1], m[2][3])
+        vec3(m[0][0], m[0][1], m[0][3]),
+        vec3(m[1][0], m[1][1], m[1][3]),
+        vec3(m[2][0], m[2][1], m[2][3])
     ];
     var a33 = [
-       vec3(m[0][0], m[0][1], m[0][2]),
-       vec3(m[1][0], m[1][1], m[1][2]),
-       vec3(m[2][0], m[2][1], m[2][2])
+        vec3(m[0][0], m[0][1], m[0][2]),
+        vec3(m[1][0], m[1][1], m[1][2]),
+        vec3(m[2][0], m[2][1], m[2][2])
     ];
 
 
 
-   a[0][0] = det3(a00)/d;
-   a[0][1] = -det3(a10)/d;
-   a[0][2] = det3(a20)/d;
-   a[0][3] = -det3(a30)/d;
-   a[1][0] = -det3(a01)/d;
-   a[1][1] = det3(a11)/d;
-   a[1][2] = -det3(a21)/d;
-   a[1][3] = det3(a31)/d;
-   a[2][0] = det3(a02)/d;
-   a[2][1] = -det3(a12)/d;
-   a[2][2] = det3(a22)/d;
-   a[2][3] = -det3(a32)/d;
-   a[3][0] = -det3(a03)/d;
-   a[3][1] = det3(a13)/d;
-   a[3][2] = -det3(a23)/d;
-   a[3][3] = det3(a33)/d;
+    a[0][0] = det3(a00)/d;
+    a[0][1] = -det3(a10)/d;
+    a[0][2] = det3(a20)/d;
+    a[0][3] = -det3(a30)/d;
+    a[1][0] = -det3(a01)/d;
+    a[1][1] = det3(a11)/d;
+    a[1][2] = -det3(a21)/d;
+    a[1][3] = det3(a31)/d;
+    a[2][0] = det3(a02)/d;
+    a[2][1] = -det3(a12)/d;
+    a[2][2] = det3(a22)/d;
+    a[2][3] = -det3(a32)/d;
+    a[3][0] = -det3(a03)/d;
+    a[3][1] = det3(a13)/d;
+    a[3][2] = -det3(a23)/d;
+    a[3][3] = det3(a33)/d;
 
-   return a;
+    return a;
 }
+
 function inverse(m)
 {
-   if(m.matrix != true) console.log("not a matrix");
-   if(m.length == 2) return inverse2(m);
-   if(m.length == 3) return inverse3(m);
-   if(m.length == 4) return inverse4(m);
+    if(m.matrix != true) console.log("not a matrix");
+    if(m.length == 2) return inverse2(m);
+    if(m.length == 3) return inverse3(m);
+    if(m.length == 4) return inverse4(m);
 }
 
 function normalMatrix(m, flag)
diff --git a/Common/initShaders2.js b/Common/initShaders2.js
index 03c59c2..f90a0b0 100644
--- a/Common/initShaders2.js
+++ b/Common/initShaders2.js
@@ -1,44 +1,42 @@
-
-    // Get a file as a string using  AJAX
-    function loadFileAJAX(name) {
-        var xhr = new XMLHttpRequest(),
-            okStatus = document.location.protocol === "file:" ? 0 : 200;
-        xhr.open('GET', name, false);
-        xhr.send(null);
-        return xhr.status == okStatus ? xhr.responseText : null;
-    };
-
-
-    function initShaders(gl, vShaderName, fShaderName) {
-        function getShader(gl, shaderName, type) {
-            var shader = gl.createShader(type),
-                shaderScript = loadFileAJAX(shaderName);
-            if (!shaderScript) {
-                alert("Could not find shader source: "+shaderName);
-            }
-            gl.shaderSource(shader, shaderScript);
-            gl.compileShader(shader);
-
-            if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
-                alert(gl.getShaderInfoLog(shader));
-                return null;
-            }
-            return shader;
+// Get a file as a string using  AJAX
+function loadFileAJAX(name) {
+    var xhr = new XMLHttpRequest(),
+        okStatus = document.location.protocol === "file:" ? 0 : 200;
+    xhr.open('GET', name, false);
+    xhr.send(null);
+    return xhr.status == okStatus ? xhr.responseText : null;
+};
+
+
+function initShaders(gl, vShaderName, fShaderName) {
+    function getShader(gl, shaderName, type) {
+        var shader = gl.createShader(type),
+            shaderScript = loadFileAJAX(shaderName);
+        if (!shaderScript) {
+            alert("Could not find shader source: "+shaderName);
         }
-        var vertexShader = getShader(gl, vShaderName, gl.VERTEX_SHADER),
-            fragmentShader = getShader(gl, fShaderName, gl.FRAGMENT_SHADER),
-            program = gl.createProgram();
-
-        gl.attachShader(program, vertexShader);
-        gl.attachShader(program, fragmentShader);
-        gl.linkProgram(program);
+        gl.shaderSource(shader, shaderScript);
+        gl.compileShader(shader);
 
-        if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
-            alert("Could not initialise shaders");
+        if (!gl.getShaderParameter(shader, gl.COMPILE_STATUS)) {
+            alert(gl.getShaderInfoLog(shader));
             return null;
         }
+        return shader;
+    }
+    var vertexShader = getShader(gl, vShaderName, gl.VERTEX_SHADER),
+        fragmentShader = getShader(gl, fShaderName, gl.FRAGMENT_SHADER),
+        program = gl.createProgram();
+
+    gl.attachShader(program, vertexShader);
+    gl.attachShader(program, fragmentShader);
+    gl.linkProgram(program);
 
+    if (!gl.getProgramParameter(program, gl.LINK_STATUS)) {
+        alert("Could not initialise shaders");
+        return null;
+    }
 
-        return program;
-    };
 
+    return program;
+};
diff --git a/Common/webgl-utils.js b/Common/webgl-utils.js
index 3c93524..4852b4c 100644
--- a/Common/webgl-utils.js
+++ b/Common/webgl-utils.js
@@ -59,104 +59,104 @@
 
 WebGLUtils = function() {
 
-/**
- * Creates the HTLM for a failure message
- * @param {string} canvasContainerId id of container of th
- *        canvas.
- * @return {string} The html.
- */
-var makeFailHTML = function(msg) {
-  return '' +
-    '<table style="background-color: #8CE; width: 100%; height: 100%;"><tr>' +
-    '<td align="center">' +
-    '<div style="display: table-cell; vertical-align: middle;">' +
-    '<div style="">' + msg + '</div>' +
-    '</div>' +
-    '</td></tr></table>';
-};
+    /**
+     * Creates the HTLM for a failure message
+     * @param {string} canvasContainerId id of container of th
+     *        canvas.
+     * @return {string} The html.
+     */
+    var makeFailHTML = function(msg) {
+        return '' +
+            '<table style="background-color: #8CE; width: 100%; height: 100%;"><tr>' +
+            '<td align="center">' +
+            '<div style="display: table-cell; vertical-align: middle;">' +
+            '<div style="">' + msg + '</div>' +
+            '</div>' +
+            '</td></tr></table>';
+    };
 
-/**
- * Mesasge for getting a webgl browser
- * @type {string}
- */
-var GET_A_WEBGL_BROWSER = '' +
-  'This page requires a browser that supports WebGL.<br/>' +
-  '<a href="http://get.webgl.org">Click here to upgrade your browser.</a>';
+    /**
+     * Mesasge for getting a webgl browser
+     * @type {string}
+     */
+    var GET_A_WEBGL_BROWSER = '' +
+            'This page requires a browser that supports WebGL.<br/>' +
+            '<a href="http://get.webgl.org">Click here to upgrade your browser.</a>';
 
-/**
- * Mesasge for need better hardware
- * @type {string}
- */
-var OTHER_PROBLEM = '' +
-  "It doesn't appear your computer can support WebGL.<br/>" +
-  '<a href="http://get.webgl.org/troubleshooting/">Click here for more information.</a>';
+    /**
+     * Mesasge for need better hardware
+     * @type {string}
+     */
+    var OTHER_PROBLEM = '' +
+            "It doesn't appear your computer can support WebGL.<br/>" +
+            '<a href="http://get.webgl.org/troubleshooting/">Click here for more information.</a>';
 
-/**
- * Creates a webgl context. If creation fails it will
- * change the contents of the container of the <canvas>
- * tag to an error message with the correct links for WebGL.
- * @param {Element} canvas. The canvas element to create a
- *     context from.
- * @param {WebGLContextCreationAttirbutes} opt_attribs Any
- *     creation attributes you want to pass in.
- * @return {WebGLRenderingContext} The created context.
- */
-var setupWebGL = function(canvas, opt_attribs) {
-  function showLink(str) {
-    var container = canvas.parentNode;
-    if (container) {
-      container.innerHTML = makeFailHTML(str);
-    }
-  };
+    /**
+     * Creates a webgl context. If creation fails it will
+     * change the contents of the container of the <canvas>
+     * tag to an error message with the correct links for WebGL.
+     * @param {Element} canvas. The canvas element to create a
+     *     context from.
+     * @param {WebGLContextCreationAttirbutes} opt_attribs Any
+     *     creation attributes you want to pass in.
+     * @return {WebGLRenderingContext} The created context.
+     */
+    var setupWebGL = function(canvas, opt_attribs) {
+        function showLink(str) {
+            var container = canvas.parentNode;
+            if (container) {
+                container.innerHTML = makeFailHTML(str);
+            }
+        };
 
-  if (!window.WebGLRenderingContext) {
-    showLink(GET_A_WEBGL_BROWSER);
-    return null;
-  }
+        if (!window.WebGLRenderingContext) {
+            showLink(GET_A_WEBGL_BROWSER);
+            return null;
+        }
 
-  var context = create3DContext(canvas, opt_attribs);
-  if (!context) {
-    showLink(OTHER_PROBLEM);
-  }
-  return context;
-};
+        var context = create3DContext(canvas, opt_attribs);
+        if (!context) {
+            showLink(OTHER_PROBLEM);
+        }
+        return context;
+    };
 
-/**
- * Creates a webgl context.
- * @param {!Canvas} canvas The canvas tag to get context
- *     from. If one is not passed in one will be created.
- * @return {!WebGLContext} The created context.
- */
-var create3DContext = function(canvas, opt_attribs) {
-  var names = ["webgl", "experimental-webgl", "webkit-3d", "moz-webgl"];
-  var context = null;
-  for (var ii = 0; ii < names.length; ++ii) {
-    try {
-      context = canvas.getContext(names[ii], opt_attribs);
-    } catch(e) {}
-    if (context) {
-      break;
-    }
-  }
-  return context;
-};
+    /**
+     * Creates a webgl context.
+     * @param {!Canvas} canvas The canvas tag to get context
+     *     from. If one is not passed in one will be created.
+     * @return {!WebGLContext} The created context.
+     */
+    var create3DContext = function(canvas, opt_attribs) {
+        var names = ["webgl", "experimental-webgl", "webkit-3d", "moz-webgl"];
+        var context = null;
+        for (var ii = 0; ii < names.length; ++ii) {
+            try {
+                context = canvas.getContext(names[ii], opt_attribs);
+            } catch(e) {}
+            if (context) {
+                break;
+            }
+        }
+        return context;
+    };
 
-return {
-  create3DContext: create3DContext,
-  setupWebGL: setupWebGL
-};
+    return {
+        create3DContext: create3DContext,
+        setupWebGL: setupWebGL
+    };
 }();
 
 /**
  * Provides requestAnimationFrame in a cross browser way.
  */
 window.requestAnimFrame = (function() {
-  return window.requestAnimationFrame ||
-         window.webkitRequestAnimationFrame ||
-         window.mozRequestAnimationFrame ||
-         window.oRequestAnimationFrame ||
-         window.msRequestAnimationFrame ||
-         function(/* function FrameRequestCallback */ callback, /* DOMElement Element */ element) {
-           window.setTimeout(callback, 1000/60);
-         };
+    return window.requestAnimationFrame ||
+        window.webkitRequestAnimationFrame ||
+        window.mozRequestAnimationFrame ||
+        window.oRequestAnimationFrame ||
+        window.msRequestAnimationFrame ||
+        function(/* function FrameRequestCallback */ callback, /* DOMElement Element */ element) {
+            window.setTimeout(callback, 1000/60);
+        };
 })();