Method initialize

src/csm/ch03/ProjectileApp.java:32–43

Initializes the simulation.

()

   * Initializes the simulation.
   */
  @Override
public void initialize() {
    double dt = control.getDouble("dt");
    double x = control.getDouble("initial x");
    double vx = control.getDouble("initial vx");
    double y = control.getDouble("initial y");
    double vy = control.getDouble("initial vy");
    projectile.setState(x, vx, y, vy);
    projectile.setStepSize(dt);
    double size = (vx*vx+vy*vy)/10; // estimate of size needed for display
    animationFrame.setPreferredMinMax(-1, size, -1, size);
  }

  /**
   * Does a time step.