public void LineCircleIntersection()
{
BoundaryCircle circleOnOrigin = new BoundaryCircle(1.0f, new Vector2D(0.0f,0.0f));
Line intersectingLine = new Line(new Vector2D(-1.0f, -1.0f), new Vector2D(1.0f, 1.0f));
Line nonIntersectingLine = new Line(new Vector2D(-1.0f, 1.0f), new Vector2D(1.0f, 2.0f));
Line boundedNonIntersectingLine = new Line(new Vector2D(1.1f, 1.1f), new Vector2D(2.6f, 2.6f));
Line internalLine = new Line(new Vector2D(0.5f, 0.5f), new Vector2D(0.4f, 0.4f));
Assert.IsTrue(circleOnOrigin.TestIntersection(intersectingLine));
Assert.IsFalse(circleOnOrigin.TestIntersection(nonIntersectingLine));
Assert.IsFalse(circleOnOrigin.TestIntersection(boundedNonIntersectingLine));
Assert.IsTrue(circleOnOrigin.TestIntersection(internalLine));
}
public static bool TestIntersection(this Bounds bounds, BoundaryCircle circle)
{
if (bounds is BoundaryCircle)
{
return circle.TestIntersection(bounds as BoundaryCircle);
}
else if (bounds is BoundaryRect)
{
return circle.TestIntersection(bounds as BoundaryRect);
}
else
{
throw new InvalidOperationException("Attempting to test boundary on unknown types");
}
}