public void FromIntersectionTests()
{
var someAabb = new BoundingRectangle(100, 100, 120, 120);
var intersectingAabb = new BoundingRectangle(90, 90, 110, 110);
var containedAabb = new BoundingRectangle(110, 110, 115, 115);
var disjointedAabb = new BoundingRectangle(0, 0, 50, 50);
Assert.That(BoundingRectangle.FromIntersection(someAabb, intersectingAabb),
Is.EqualTo(new BoundingRectangle(100, 100, 110, 110)));
Assert.That(BoundingRectangle.FromIntersection(someAabb, containedAabb), Is.EqualTo(containedAabb));
Assert.That(BoundingRectangle.FromIntersection(someAabb, disjointedAabb),
Is.EqualTo(BoundingRectangle.Empty));
}
void Collide()
{
BoundingRectangle bb1 = body1.Rectangle;
BoundingRectangle bb2 = body2.Rectangle;
BoundingRectangle targetArea;
BoundingRectangle.FromIntersection(ref bb1, ref bb2, out targetArea);
LinkedListNode <ContactPoint> node = contacts.First;
if (!body2.IgnoreVertexes &&
body1.Shape.CanGetIntersection)
{
Collide(ref node, this.body1, this.body2, false, ref targetArea);
}
if (!body1.IgnoreVertexes &&
body2.Shape.CanGetIntersection)
{
Collide(ref node, this.body2, this.body1, true, ref targetArea);
}
}