@Override
public boolean onTouchEvent(MotionEvent event) {
//
float x = event.getX();
float y = event.getY();
// If a touch is moved on the screen
if (event.getAction() == MotionEvent.ACTION_MOVE) {
// Calculate the change
float dx = x - oldX;
float dy = y - oldY;
// Define an upper area of 10% on the screen
int upperArea = this.getHeight() / 10;
if (y < upperArea) {
// Zoom in/out if the touch move has been made in the upper
renderer.Zoom(dx * TOUCH_SCALE / 2);
} else {
// Rotate around the axis otherwise
renderer.RotateAnchor(dy * TOUCH_SCALE, dx * TOUCH_SCALE);
}
// A press on the screen
} else if (event.getAction() == MotionEvent.ACTION_UP) {
// TODO stop the animation
}
// Remember the values
oldX = x;
oldY = y;
// We handled the event
return true;
}
