public void CollisionFilterTest_CreateUnion()
{
//Union: GroupIndex will only be not 0 if both operands have the same GroupIndex
var filter0 = new CollisionFilter
{
GroupIndex = 1
};
var filter1 = new CollisionFilter
{
BelongsTo = 1,
CollidesWith = 1,
GroupIndex = -1
};
var filter2 = new CollisionFilter
{
BelongsTo = 1,
CollidesWith = 1,
GroupIndex = 1
};
var filter3 = new CollisionFilter
{
BelongsTo = 0,
CollidesWith = 0,
GroupIndex = -1
};
var filter4 = new CollisionFilter
{
BelongsTo = 1,
CollidesWith = 1,
GroupIndex = 0
};
Assert.IsTrue(CollisionFilter.CreateUnion(CollisionFilter.Zero, CollisionFilter.Default)
.Equals(CollisionFilter.Default));
Assert.IsTrue(CollisionFilter.CreateUnion(filter0, CollisionFilter.Zero).Equals(CollisionFilter.Zero));
Assert.IsTrue(CollisionFilter.CreateUnion(filter1, CollisionFilter.Zero).Equals(filter4));
Assert.IsTrue(CollisionFilter.CreateUnion(filter2, CollisionFilter.Zero).Equals(filter4));
Assert.IsTrue(CollisionFilter.CreateUnion(filter3, CollisionFilter.Zero).Equals(CollisionFilter.Zero));
Assert.IsTrue(CollisionFilter.CreateUnion(filter4, CollisionFilter.Zero).Equals(filter4));
Assert.IsTrue(CollisionFilter.CreateUnion(filter0, filter1).Equals(filter4));
Assert.IsTrue(CollisionFilter.CreateUnion(filter1, filter3).Equals(filter1));
Assert.IsTrue(CollisionFilter.CreateUnion(filter1, filter2).Equals(filter4));
Assert.IsTrue(CollisionFilter.CreateUnion(filter2, filter3).Equals(filter4));
Assert.IsTrue(CollisionFilter.CreateUnion(filter3, filter4).Equals(filter4));
}
