public void update() {
rad += increment;
if (rad > (Math.PI * 2)) {
rad = 0.0;
}
coords[0] = 0.8 * Math.cos(rad);
coords[1] = 0.8 * Math.sin(rad);
}
/* translate from 0 to 1, to a half circle
* 0.0 = 0
* 0.5 = 1
* 1.0 = 0
*/
private float halfCircle(float t) {
return (float) Math.sin(t * 3.1415927f);
}
Sweep() {
rad = 0;
increment = 0.01;
coords = new double[] {0.8 * Math.cos(rad), 0.8 * Math.sin(rad), 0.0};
origin = new double[] {0.0, 0.0, 0.0};
}