public void IdenticalRectanglesIntersect()
{
var a = TransformedRectangle.FromRectangle(new RectangleF(0, 0, 10, 10));
var b = a;
Assert.True(a.Intersects(b));
}
public void LargerRectangleContainsSmallerOne()
{
var a = TransformedRectangle.FromRectangle(new RectangleF(0, 0, 10, 10));
var b = TransformedRectangle.FromRectangle(new RectangleF(-5, -5, 15, 15));
Assert.True(a.Intersects(b));
}
public void CompletelySeparateRectanglesDontIntersect()
{
var a = TransformedRectangle.FromRectangle(new RectangleF(0, 0, 1, 1));
var b = TransformedRectangle.FromRectangle(new RectangleF(2, 0, 1, 1));
Assert.False(a.Intersects(b));
}
public void RotatedRectanglesIntersect()
{
var a = TransformedRectangle.FromRectangle(new RectangleF(0, 0, 10, 10), 3.2f);
var b = TransformedRectangle.FromRectangle(new RectangleF(0, 0, 10, 10), 1.2f);
Assert.True(a.Intersects(b));
}
public override void Update(Transform transform)
{
WorldBounds = BoundingSphere.Transform(SphereBounds, transform.Matrix);
var width = SphereBounds.Radius * 2.0f;
AxisAlignedBoundingArea = new RectangleF(transform.Translation.Vector2XY() - new Vector2(SphereBounds.Radius, SphereBounds.Radius), width, width);
BoundingArea = TransformedRectangle.FromRectangle(AxisAlignedBoundingArea);
}
public BoxCollider(RectangleF rect, float height = 1.0f) : base(rect, height)
{
_AABox = new AxisAlignedBoundingBox(Vector3.Zero, new Vector3(rect.Width, rect.Height, height));
_worldBox = new BoundingBox(rect, height);
WorldAABox = new AxisAlignedBoundingBox(new Vector3(rect.X, rect.Y, 0), new Vector3(rect.X + rect.Width, rect.Y + rect.Height, height));
BoundingArea = TransformedRectangle.FromRectangle(rect);
AxisAlignedBoundingArea = rect;
}
protected SphereCollider(RectangleF rect)
: base(new Transform(Matrix4x4.Identity), 0)
{
var radius = new Vector2(rect.Width, rect.Height).Length() / 2.0f;
SphereBounds = new BoundingSphere(Vector3.Zero, radius);
var center = new Vector3(rect.X + rect.Width / 2.0f, rect.Y + rect.Height / 2.0f, 0);
WorldBounds = new BoundingSphere(center, radius);
AxisAlignedBoundingArea = rect;
BoundingArea = TransformedRectangle.FromRectangle(rect);
}
public sealed override void Update(Transform transform)
{
base.Update(transform);
_worldBox = new BoundingBox(_AABox, transform.Matrix);
WorldAABox = new AxisAlignedBoundingBox(_worldBox);
var width = WorldAABox.Max.X - WorldAABox.Min.X;
var height = WorldAABox.Max.Y - WorldAABox.Min.Y;
AxisAlignedBoundingArea = new RectangleF(WorldAABox.Min.X, WorldAABox.Min.Y, width, height);
width = _AABox.Max.X - _AABox.Min.X;
height = _AABox.Max.Y - _AABox.Min.Y;
var rect = new RectangleF(_AABox.Min.X + Transform.Translation.X, _AABox.Min.Y + Transform.Translation.Y, width, height);
BoundingArea = TransformedRectangle.FromRectangle(rect, Transform.Yaw);
}
public bool Intersects(TransformedRectangle rect) => WorldBounds.Intersects(rect);
public void IntersectsCircle(float x, float y, float radius, bool expected)
{
var rect = TransformedRectangle.FromRectangle(new RectangleF(0, 0, 5, 5), 0.75f);
Assert.Equal(expected, rect.Intersects(new Vector2(x, y), radius));
}
public void Contains(float x, float y, bool expected)
{
var sut = TransformedRectangle.FromRectangle(new RectangleF(0, 0, 4, 4), 0.75f);
Assert.Equal(expected, sut.Contains(new Vector2(x, y)));
}
public void IntersectsCircle_AA_Translated(float x, float y, float width, float height, float cx, float cy, float radius, bool expected)
{
var rect = TransformedRectangle.FromRectangle(new RectangleF(x, y, width, height), 0);
Assert.Equal(expected, rect.Intersects(new Vector2(cx, cy), radius));
}