/**
 * @depends MatrixStack.js
 */
var Camera = new Class({
    initialize: function() {
        this.projection = new MatrixStack();
        this.modelview = new MatrixStack();
    },

    perspective: function(fovy, aspect, near, far) {
        mat4.perspective(fovy, aspect, near, far, this.projection);
    },

    ortho: function(left, right, top, bottom, near, far) {
        mat4.ortho(left, right, top, bottom, near, far, this.projection);
    },

    lookAt: function(eye, center, up) {
        mat4.lookAt(eye, center, up, this.modelview);
    }
});

@@ -289,32 +289,39 @@
  this.projection
+.matrix
 );%0A    %7D,%0A%0A    o
@@ -445,16 +445,23 @@
 ojection
+.matrix
 );%0A    %7D
@@ -554,16 +554,23 @@
 odelview
+.matrix
 );%0A    %7D

Make camera function actually affect the matrices