Andrzej Kapolka
3f2885496e
git-svn-id: svn+ssh://src.earth.threerings.net/nenya/trunk@63 ed5b42cb-e716-0410-a449-f6a68f950b19
129 lines
4.0 KiB
Java
129 lines
4.0 KiB
Java
//
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// $Id$
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//
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// Narya library - tools for developing networked games
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// Copyright (C) 2002-2005 Three Rings Design, Inc., All Rights Reserved
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// http://www.threerings.net/code/narya/
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//
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// This library is free software; you can redistribute it and/or modify it
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// under the terms of the GNU Lesser General Public License as published
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// by the Free Software Foundation; either version 2.1 of the License, or
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// (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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package com.threerings.jme.model;
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import java.io.IOException;
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import java.io.ObjectInput;
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import java.io.ObjectOutput;
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import java.util.Properties;
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import com.jme.math.Quaternion;
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import com.jme.math.Vector3f;
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import com.jme.scene.Controller;
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import com.jme.scene.Spatial;
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import com.samskivert.util.StringUtil;
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import com.threerings.jme.Log;
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/**
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* A procedural animation that rotates a node around at a constant angular
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* velocity.
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*/
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public class Rotator extends ModelController
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{
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@Override // documentation inherited
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public void configure (Properties props, Spatial target)
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{
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super.configure(props, target);
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String axisstr = props.getProperty("axis", "x"),
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velstr = props.getProperty("velocity", "3.14");
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if (axisstr.equalsIgnoreCase("x")) {
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_axis = Vector3f.UNIT_X;
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} else if (axisstr.equalsIgnoreCase("y")) {
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_axis = Vector3f.UNIT_Y;
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} else if (axisstr.equalsIgnoreCase("z")) {
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_axis = Vector3f.UNIT_Z;
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} else {
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float[] axis = StringUtil.parseFloatArray(axisstr);
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if (axis != null && axis.length == 3) {
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_axis = new Vector3f(axis[0], axis[1],
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axis[2]).normalizeLocal();
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} else {
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Log.warning("Invalid rotation axis [axis=" + axisstr + "].");
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}
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}
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try {
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_velocity = Float.parseFloat(velstr);
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} catch (NumberFormatException e) {
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Log.warning("Invalid angular velocity [velocity=" + velstr + "].");
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}
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}
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// documentation inherited
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public void update (float time)
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{
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if (!isActive()) {
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return;
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}
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_rot.fromAngleNormalAxis(time * _velocity, _axis);
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_target.getLocalRotation().multLocal(_rot);
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}
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@Override // documentation inherited
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public Controller putClone (
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Controller store, Model.CloneCreator properties)
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{
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Rotator rstore;
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if (store == null) {
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rstore = new Rotator();
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} else {
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rstore = (Rotator)store;
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}
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super.putClone(rstore, properties);
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rstore._axis = _axis;
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rstore._velocity = _velocity;
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return rstore;
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}
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// documentation inherited from interface Externalizable
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public void writeExternal (ObjectOutput out)
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throws IOException
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{
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super.writeExternal(out);
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out.writeObject(_axis);
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out.writeFloat(_velocity);
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}
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// documentation inherited from interface Externalizable
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public void readExternal (ObjectInput in)
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throws IOException, ClassNotFoundException
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{
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super.readExternal(in);
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_axis = (Vector3f)in.readObject();
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_velocity = in.readFloat();
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}
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/** The axis about which to rotate. */
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protected Vector3f _axis;
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/** The velocity at which to rotate in radians per second. */
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protected float _velocity;
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/** A temporary quaternion. */
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protected Quaternion _rot = new Quaternion();
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private static final long serialVersionUID = 1;
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}
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