/**
* Method that provides a recursive mechanism to go through OMGraphicsLists to filter out areas,
* inside or outside another.
*/
protected OMGraphicList filterList(OMGraphicList omgl, Area area, boolean getInsideArea) {
OMGraphicList ret = new OMGraphicList();
boolean DEBUG_DETAIL = Debug.debugging("filtersupportdetail");
boolean DEBUG = Debug.debugging("filtersupport") || DEBUG_DETAIL;
if (DEBUG) {
Debug.output("FilterSupport.filterList");
}
int count = 0; // for debugging
if (area != null && omgl != null) { // just checking
for (OMGraphic omg : omgl) {
if (DEBUG) {
Debug.output("FilterSupport.filterList evaluating " + (count++) + " OMGraphic, " + omg);
}
boolean outsideFilter = true;
// If not visible, automatically fails...
if (!omg.isVisible()) {
if (DEBUG) {
Debug.output(" OMGraphic not visible, ignoring");
}
continue;
}
if (omg instanceof OMGraphicList) {
if (omg == omgl) {
Debug.output(" OMGraphic is parent list (points to itself), ignoring...");
continue;
}
if (DEBUG) {
Debug.output(" (filterList recursiving handing OMGraphicList)");
}
OMGraphicList subList = filterList((OMGraphicList) omg, area, getInsideArea);
if (!subList.isEmpty()) {
if (DEBUG) {
Debug.output(
" +++ OMGraphicList's contents (" + subList.size() + ") pass filter, adding...");
}
if (((OMGraphicList) omg).isVague()) {
passedFilter(omg);
omg.setVisible(true);
ret.add(omg);
} else {
passedFilter(subList);
ret.add(subList);
}
} else {
if (DEBUG) {
Debug.output(" --- OMGraphicList's contents fail filter, ignoring...");
}
failedFilter(omg);
}
continue;
} else {
Shape omgShape = omg.getShape();
if (omgShape != null) {
if (omgShape.getBounds2D().getWidth() == 0 && omgShape.getBounds2D().getHeight() == 0) {
if (area.contains(omgShape.getBounds2D().getX(), omgShape.getBounds2D().getY())) {
if (DEBUG_DETAIL) {
Debug.output(" +++ omg contains position");
}
outsideFilter = false;
}
} else if (area.intersects(omgShape.getBounds2D())) {
if (DEBUG_DETAIL) {
Debug.output(" +++ omg intersects bounds");
}
// The area.interects() method above is a
// general case. If you care about
// preciseness, set the precise flag.
// Depending on the performance cost, we might
// want to make it permanent.
if (precise) {
Area omgArea = new Area(omgShape);
if (!omgArea.isSingular()) {
Area clone = (Area) area.clone();
clone.intersect(omgArea);
if (!clone.isEmpty()) {
outsideFilter = false;
}
} else {
outsideFilter = false;
}
} else {
outsideFilter = false;
}
}
}
// decide what to do depending on filteredOut and
// getInsideArea
if ((outsideFilter && !getInsideArea) || (!outsideFilter && getInsideArea)) {
if (DEBUG) {
Debug.output(" +++ OMGraphic passes filter, adding...");
}
passedFilter(omg);
ret.add(omg);
} else {
if (DEBUG) {
Debug.output(" --- OMGraphic fails filter, hiding...");
}
failedFilter(omg);
}
}
}
}
return ret;
}
