public void updatePosition(float dt) {
if (fixed) {
netForce.reset(); // Shouldn't accumulate forces if fixed
return;
}
updateAcceleration(dt);
updateVelocity(dt);
Point prev = new Point(pos.x, pos.y);
pos.add(vel.copy().scale(dt, dt));
ensureInBounds();
}
// f = m * a --> a = f / m
private void updateAcceleration(float dt) {
// println("node = " + id + ", netforce = " + netForce);
Vector prev = acc;
Float f1 = new Float(netForce.x);
Float f2 = new Float(netForce.y);
if (f1.isNaN(f1) || f2.isNaN(f2)) {
netForce = new Vector();
}
float scale = 1.0f / mass;
this.acc = netForce.copy().scale(scale, scale);
if (id.equals("*.1.0-10")) {
// println("NewAcc = " + acc);
// System.exit(1);
}
// reset netForce for next time
netForce.reset();
}