Android Open Source - Verlet Tire

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Back to project page Verlet.

License

The source code is released under:

Copyright 2013 Devicement http://devicement.com/ Copyright 2013 Sub Protocol and other contributors http://subprotocol.com/ Permission is hereby granted, free of charge, to any person obtaining a co...

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Java Source Code

package org.verletandroid.VerletCore.Objects;
//w ww  .jav a2s.  c  o  m
import org.verletandroid.VerletCore.Composite;
import org.verletandroid.VerletCore.Contraints.DistanceConstraint;
import org.verletandroid.VerletCore.Composite;
import org.verletandroid.VerletCore.Contraints.DistanceConstraint;
import org.verletandroid.VerletCore.Particle;
import org.verletandroid.VerletCore.Vec2;

/**
 * Created with IntelliJ IDEA.
 * User: George
 * Date: 29.04.13
 * Time: 0:11
 * To change this template use File | Settings | File Templates.
 */
public class Tire extends Composite {

    public Tire(Vec2 origin, float radius, int segments, float spokeStiffness, float treadStiffness) {
        double stride = (2 * Math.PI) / segments;
        int i;

        for (i=0;i<segments;++i) {
            double theta = i * stride;
            particles.add(new Particle(new Vec2(origin.x + Math.cos(theta) * radius, origin.y + Math.sin(theta) * radius)));
        }

        Particle center = new Particle(origin);
        particles.add(center);

        // constraints
        for (i=0;i<segments;++i) {
            constraints.add(new DistanceConstraint(particles.get(i), particles.get((i + 1) % segments), treadStiffness));
            constraints.add(new DistanceConstraint(particles.get(i), center, spokeStiffness));
            constraints.add(new DistanceConstraint(particles.get(i), particles.get((i + 5) % segments), treadStiffness));
        }
    }
}

Java Source Code List