private static IEnumerable <Vector2> FindIntersections(ICurve a, ICurve b)
{
Rectangle aBoundingBox = a.BoundingBox();
Rectangle bBoundingBox = b.BoundingBox();
if (aBoundingBox.Overlaps(bBoundingBox))
{
if (aBoundingBox.Width < maximumSize && aBoundingBox.Height < maximumSize &&
bBoundingBox.Width < maximumSize && bBoundingBox.Height < maximumSize)
{
yield return(aBoundingBox.UpperRight);
}
else
{
var(a1, a2) = a.Split(0.5f);
var(b1, b2) = b.Split(0.5f);
foreach (Vector2 intersection in a1.Intersections(b1))
{
yield return(intersection);
}
foreach (Vector2 intersection in a1.Intersections(b2))
{
yield return(intersection);
}
foreach (Vector2 intersection in a2.Intersections(b1))
{
yield return(intersection);
}
foreach (Vector2 intersection in a2.Intersections(b2))
{
yield return(intersection);
}
}
}
}
public static void DrawBoundingBox(this Canvas canvas, ICurve curve)
{
Rectangle boundingBox = curve.BoundingBox(boundingBoxOffset);
canvas.DrawRectangle(boundingBox, boundingBoxStroke, boundingBoxThickness);
}
