Reverting Vector3.angleTo change. See #7343.

4e9abd1f · Mr.doob · cc06a100 · 4e9abd1f
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src/math/Vector3.js src/math/Vector3.js +1 -1

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--- a/src/math/Vector3.js
+++ b/src/math/Vector3.js
@@ -655,7 +655,7 @@ THREE.Vector3.prototype = {

 	angleTo: function ( v ) {

-		var theta = this.dot( v ) / Math.sqrt( this.lengthSq() * v.lengthSq() );
+		var theta = this.dot( v ) / ( this.length() * v.length() );

 		// clamp, to handle numerical problems