/**
* The contains test whether the coordinate p is within the circle. Triangle contains coordinate
* if the distance between center and p is smaller then the radius that is reduced by tolerance.
* This is used for triangulation when there are four points on one circle to avoid neverending
* loop.
*
* @param p - the point to be tested
* @return True if the circle contais p, False if not.
*/
protected boolean contains(DirectPosition p) {
if (center.distance(new DirectPosition2D(p)) < (this.radius - tolerance)) {
return true;
} else {
return false;
}
}
/**
* Zoom out by the currently set increment, with the map centred at the location (in world coords)
* of the mouse click
*
* @param ev the mouse event
*/
@Override
public void onMouseClicked(MapMouseEvent ev) {
if (!isTriggerMouseButton(ev)) {
return;
}
Rectangle paneArea = getMapPane().getBounds();
DirectPosition2D mapPos = ev.getMapPosition();
double scale = getMapPane().getWorldToScreenTransform().getScaleX();
double newScale = scale / zoom;
DirectPosition2D corner =
new DirectPosition2D(
mapPos.getX() - 0.5d * paneArea.width / newScale,
mapPos.getY() + 0.5d * paneArea.height / newScale);
Envelope2D newMapArea = new Envelope2D();
newMapArea.setFrameFromCenter(mapPos, corner);
getMapPane().setDisplayArea(newMapArea);
}