/** ******************* */
protected void zoom(final float factor) {
Chart chart = targets.get(0);
BoundingBox3d viewBounds = chart.getView().getBounds();
BoundingBox3d newBounds = viewBounds.scale(new Coord3d(factor, factor, 1));
chart.getView().setBoundManual(newBounds);
chart.getView().shoot();
fireControllerEvent(ControllerType.ZOOM, factor);
}
protected void pan(Coord3d from, Coord3d to) {
Chart chart = targets.get(0);
BoundingBox3d viewBounds = chart.getView().getBounds();
Coord3d offset = to.sub(from).div(-PAN_FACTOR);
BoundingBox3d newBounds = viewBounds.shift(offset);
chart.getView().setBoundManual(newBounds);
chart.getView().shoot();
fireControllerEvent(ControllerType.PAN, offset);
}