private void resetZoom(Point2D point) {
if (!isZoomable()) {
return;
}
Navigable navigable = InteractivePanel.getNavigableAt(getDrawable(), point);
if (navigable == null) {
return;
}
Navigator navigator = navigable.getNavigator();
navigator.reset();
repaint();
}
/**
* Zooms a navigable object in (positive values) or out (negative values).
*
* @param point The location where the zoom was triggered.
* @param times Number of times the navigable object will be zoomed. Positive values zoom in,
* negative values zoom out.
*/
private void zoom(Point2D point, int times) {
if (!isZoomable()) {
return;
}
Navigable navigable = InteractivePanel.getNavigableAt(getDrawable(), point);
if (navigable == null) {
return;
}
Navigator navigator = navigable.getNavigator();
if (times >= 0) {
for (int i = 0; i < times; i++) {
navigator.zoomOut();
}
} else {
for (int i = 0; i < -times; i++) {
navigator.zoomIn();
}
}
repaint();
}
@Override
public void mouseDragged(MouseEvent e) {
if (navigable == null) {
return;
}
// Calculate distance that the current view was dragged
// (screen units)
Point pos = e.getPoint();
Navigator navigator = navigable.getNavigator();
int dx = pos.x - posPrev.x;
int dy = pos.y - posPrev.y;
posPrev = pos;
if (Math.abs(dx) > MIN_DRAG || Math.abs(dy) > MIN_DRAG) {
PointND<Integer> deltas = new PointND<Integer>(dx, dy);
navigator.pan(deltas);
panel.repaint();
}
}