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@@ -0,0 +1,48 @@
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+(function() {
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+
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+ THREE = Bench.THREE;
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+
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+ var position = new THREE.Vector3(1, 1, 1);
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+ var scale = new THREE.Vector3(2, 1, 0.5);
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+ var rotation = new THREE.Quaternion();
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+ rotation.setFromAxisAngle(new THREE.Vector3(0, 1, 0), Math.PI / 8);
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+ var createLocallyOffsetChild = function() {
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+ var child = new THREE.Object3D();
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+ child.position = position;
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+ child.scale = scale;
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+ child.rotation = rotation;
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+ return child;
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+ };
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+
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+ var generateSceneGraph = function(root, depth, breadth, initObject) {
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+ if (depth > 0) {
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+ for (var i = 0; i < breadth; i++) {
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+ var child = initObject();
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+ root.add(child);
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+ generateSceneGraph(child, depth - 1, breadth, initObject);
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+ }
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+ }
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+ return root;
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+ };
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+
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+ var nodeCount = function(root) {
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+ return root.children.reduce(function(acc, x) { return acc + nodeCount(x); }, 1);
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+ };
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+
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+ var rootA = generateSceneGraph(new THREE.Object3D(), 100, 1, createLocallyOffsetChild);
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+ var rootB = generateSceneGraph(new THREE.Object3D(), 3, 10, createLocallyOffsetChild);
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+ var rootC = generateSceneGraph(new THREE.Object3D(), 9, 3, createLocallyOffsetChild);
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+
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+ var s = Bench.newSuite("Update world transforms");
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+
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+ s.add('Update graph depth=100, breadth=1 (' + nodeCount(rootA) + ' nodes)', function() {
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+ rootA.updateMatrixWorld(true);
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+ });
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+ s.add('Update graph depth=3, breadth=10 (' + nodeCount(rootB) + ' nodes)', function() {
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+ rootB.updateMatrixWorld(true);
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+ });
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+ s.add('Update graph depth=9, breadth=3 (' + nodeCount(rootC) + ' nodes)', function() {
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+ rootC.updateMatrixWorld(true);
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+ });
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+
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+})();
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Marshall Quander