public void toAt(Vector cam, Vector obj) {
if (cam == null || obj == null) throw new NullPointerException();
dir.set(0, 0, 0);
dir.set(obj);
dir.sub(cam);
dir.mult(-1f);
dir.norm();
dir.get(dirArray);
right.set(0, 0, 0);
right.cross(worldUp, dir);
right.norm();
right.get(rightArray);
up.set(0, 0, 0);
up.cross(dir, right);
up.norm();
up.get(upArray);
set(
rightArray[0],
rightArray[1],
rightArray[2],
upArray[0],
upArray[1],
upArray[2],
dirArray[0],
dirArray[1],
dirArray[2]);
}
@Override
public boolean onTouchEvent(MotionEvent event) {
int x = (int) event.getX();
int y = (int) event.getY();
int[] colors = new int[] {Color.RED, Color.GREEN, Color.BLUE, Color.YELLOW};
// color = colors[new Random().nextInt(colors.length)];
// radius = new Random().nextInt(30) + 50;
// 引力
Vector touch = new Vector(x, y);
acc = Vector.sub(touch, loca);
acc.normalize();
acc.mult(15.0f);
return super.onTouchEvent(event);
}
// TODO NEW
public Vector getMeanY() {
final Vector result = this.ySum.copy();
result.mult(1.0 / this.n);
return result;
}
public void setAccel(Vector accel) {
acceleration = accel.get();
acceleration.mult(damping);
}
public void applyForce(Vector force) {
Vector f = force.get();
f.mult(mass);
f.mult(damping);
acceleration.add(f);
}
public void recoilExp(Vector A) {
recoilVel = A.mult(recC);
State = 3;
timeRecoil = 0;
}
