public void QuadrantsJoinWhenAtLowCapacity()
{
ConcurrentGeoQuadtree <object> quadtree = new ConcurrentGeoQuadtree <object>(1, 10, 25);
List <ConcurrentGeoQuadtree <object> .IElement> elements = new List <ConcurrentGeoQuadtree <object> .IElement>();
for (int i = 0; i < 20; ++i)
{
elements.Add(quadtree.InsertElement(null, new GeoCoordinates(0, 0)));
}
Assert.Equal(0, quadtree.GetLargestSubdivisionLevel());
quadtree.EfficientlyReindex();
int prevSubdivLevel = quadtree.GetLargestSubdivisionLevel();
Assert.True(prevSubdivLevel >= 1);
foreach (var element in elements)
{
quadtree.RemoveElement(element);
}
quadtree.EfficientlyReindex();
Assert.True(quadtree.GetLargestSubdivisionLevel() < prevSubdivLevel);
}
public void QuadrantDoesntJoinIfWouldBeAboveCapacity()
{
ConcurrentGeoQuadtree <object> quadtree = new ConcurrentGeoQuadtree <object>(2, 10, 25);
List <ConcurrentGeoQuadtree <object> .IElement> elements = new List <ConcurrentGeoQuadtree <object> .IElement>();
for (int i = 0; i < 10; ++i)
{
elements.Add(quadtree.InsertElement(null, new GeoCoordinates(1, 1)));
}
for (int i = 0; i < 10; ++i)
{
quadtree.InsertElement(null, new GeoCoordinates(-1, -1));
}
quadtree.EfficientlyReindex();
Assert.True(quadtree.GetLargestSubdivisionLevel() >= 1);
// Remove all but one element from the top-right quadrant but not the
// bottom-left quadrant.
foreach (var element in elements.Take(9))
{
quadtree.RemoveElement(element);
}
quadtree.EfficientlyReindex();
Assert.True(quadtree.GetLargestSubdivisionLevel() >= 1);
}
public void CannotMoveRemovedElement()
{
ConcurrentGeoQuadtree <object> quadtree = new ConcurrentGeoQuadtree <object>();
var element = quadtree.InsertElement(null, new GeoCoordinates(0, 0));
quadtree.RemoveElement(element);
Assert.False(quadtree.MoveElement(element, new GeoCoordinates(1, 1)));
}