Examples with ConstantVolumeJointDef spacegraph.space2d.phys.dynamics.joints.ConstantVolumeJointDef used on opensource projects

Example 1 with ConstantVolumeJointDef

use of spacegraph.space2d.phys.dynamics.joints.ConstantVolumeJointDef in project narchy by automenta.

the class BlobTest4 method init.

@Override
public void init(Dynamics2D w) {
    Body2D ground = null;
    {
        PolygonShape sd = new PolygonShape();
        sd.setAsBox(50.0f, 0.4f);
        BodyDef bd = new BodyDef();
        bd.position.set(0.0f, 0.0f);
        ground = w.addBody(bd);
        ground.addFixture(sd, 0f);
        sd.setAsBox(0.4f, 50.0f, new v2(-10.0f, 0.0f), 0.0f);
        ground.addFixture(sd, 0f);
        sd.setAsBox(0.4f, 50.0f, new v2(10.0f, 0.0f), 0.0f);
        ground.addFixture(sd, 0f);
    }
    ConstantVolumeJointDef cvjd = new ConstantVolumeJointDef();
    float cx = 0.0f;
    float cy = 10.0f;
    float rx = 5.0f;
    float ry = 5.0f;
    int nBodies = 40;
    float bodyRadius = 0.25f;
    for (int i = 0; i < nBodies; ++i) {
        float angle = MathUtils.map(i, 0, nBodies, 0, 2 * 3.1415f);
        BodyDef bd = new BodyDef();
        // bd.isBullet = true;
        bd.fixedRotation = true;
        float x = cx + rx * (float) Math.sin(angle);
        float y = cy + ry * (float) Math.cos(angle);
        bd.position.set(new v2(x, y));
        bd.type = BodyType.DYNAMIC;
        Body2D body = w.addBody(bd);
        FixtureDef fd = new FixtureDef();
        CircleShape cd = new CircleShape();
        cd.radius = bodyRadius;
        fd.shape = cd;
        fd.density = 1.0f;
        body.addFixture(fd);
        cvjd.addBody(body);
    }
    cvjd.frequencyHz = 10.0f;
    cvjd.dampingRatio = 0.9f;
    cvjd.collideConnected = false;
    w.addJoint(cvjd);
    BodyDef bd2 = new BodyDef();
    bd2.type = BodyType.DYNAMIC;
    PolygonShape psd = new PolygonShape();
    psd.setAsBox(3.0f, 1.5f, new v2(cx, cy + 15.0f), 0.0f);
    bd2.position = new v2(cx, cy + 15.0f);
    Body2D fallingBox = w.addBody(bd2);
    fallingBox.addFixture(psd, 1.0f);
}