public HitTestResult HitTest(Coordinates point, double tolerance, HitTestFilter filter)
{
// first check the selected object and it's hierarchy
if (selectedObject != null)
{
object obj = selectedObject;
while (obj != null)
{
if (obj is IHittable)
{
// run the hit test on the object
HitTestResult hitResult = HitTest((IHittable)obj, point, tolerance, filter);
// if it's a hit, we're done
if (hitResult.Hit)
{
return(hitResult);
}
}
// move up the next step in the hierarchy
obj = ((IHittable)obj).Parent;
}
}
// iterate backwards through the objects (last object is drawn on top)
foreach (object obj in Services.DisplayObjectService.GetReverseVisibleEnumerator())
{
if (obj is IHittable)
{
// run the hit test on the object
HitTestResult hitResult = HitTest((IHittable)obj, point, tolerance, filter);
// if it's a hit, we're done
if (hitResult.Hit)
{
return(hitResult);
}
}
}
// return a no hit
return(HitTestResult.NoHit);
}
private HitTestResult HitTest(IHittable obj, Coordinates point, double tolerance, HitTestFilter filter)
{
// check if we're in the bounding box
RectangleF boundingBox = obj.GetBoundingBox();
// inflate by the tolerance
if (!boundingBox.IsEmpty)
{
boundingBox.Inflate((float)tolerance, (float)tolerance);
}
// check if the bounding box is empty or we're inside it
if (boundingBox.IsEmpty || boundingBox.Contains(Utility.ToPointF(point)))
{
// run the hit test
HitTestResult result = obj.HitTest(point, (float)tolerance);
// apply the filter
if (filter(result))
{
return(result);
}
}
// return a no-hit
return(HitTestResult.NoHit);
}
private HitTestResult HitTest(IHittable obj, Coordinates point, double tolerance, HitTestFilter filter)
{
// check if we're in the bounding box
RectangleF boundingBox = obj.GetBoundingBox();
// inflate by the tolerance
if (!boundingBox.IsEmpty) {
boundingBox.Inflate((float)tolerance, (float)tolerance);
}
// check if the bounding box is empty or we're inside it
if (boundingBox.IsEmpty || boundingBox.Contains(Utility.ToPointF(point))) {
// run the hit test
HitTestResult result = obj.HitTest(point, (float)tolerance);
// apply the filter
if (filter(result)) {
return result;
}
}
// return a no-hit
return HitTestResult.NoHit;
}
public HitTestResult HitTest(Coordinates point, double tolerance, HitTestFilter filter)
{
// first check the selected object and it's hierarchy
if (selectedObject != null) {
object obj = selectedObject;
while (obj != null) {
if (obj is IHittable) {
// run the hit test on the object
HitTestResult hitResult = HitTest((IHittable)obj, point, tolerance, filter);
// if it's a hit, we're done
if (hitResult.Hit)
return hitResult;
}
// move up the next step in the hierarchy
obj = ((IHittable)obj).Parent;
}
}
// iterate backwards through the objects (last object is drawn on top)
foreach (object obj in Services.DisplayObjectService.GetReverseVisibleEnumerator()) {
if (obj is IHittable) {
// run the hit test on the object
HitTestResult hitResult = HitTest((IHittable)obj, point, tolerance, filter);
// if it's a hit, we're done
if (hitResult.Hit)
return hitResult;
}
}
// return a no hit
return HitTestResult.NoHit;
}
