/*
* __ .__ .__ ._____.
* _/ |_ _______ __|__| ____ | | |__\_ |__ ______
* \ __\/ _ \ \/ / |/ ___\| | | || __ \ / ___/
* | | ( <_> > <| \ \___| |_| || \_\ \\___ \
* |__| \____/__/\_ \__|\___ >____/__||___ /____ >
* \/ \/ \/ \/
*
* Copyright (c) 2006-2011 Karsten Schmidt
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* http://creativecommons.org/licenses/LGPL/2.1/
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
package toxi.sim.dla;
import toxi.geom.Vec3D;
public class DLAParticle extends Vec3D {
protected Vec3D opos;
protected Vec3D dir;
protected float escapeRadius;
protected float particleSpeed;
protected float searchSpeed;
public DLAParticle(Vec3D p, float escapeRadius, float particleSpeed,
float searchSpeed) {
super(p);
this.escapeRadius = escapeRadius;
this.particleSpeed = particleSpeed;
this.searchSpeed = searchSpeed;
opos = p.copy();
reorientate();
}
public void reorientate() {
dir = Vec3D.randomVector();
}
public void update(Vec3D target) {
Vec3D d = target.sub(this);
if (d.magnitude() > escapeRadius) {
set(opos);
reorientate();
d = target.sub(this);
}
Vec3D ndir = d.getNormalizedTo(searchSpeed);
dir.interpolateToSelf(ndir, particleSpeed);
addSelf(dir);
}
}