public static bool Intersects(Vector2 A1, Vector2 A2, Vector2 B1, Vector2 B2, ref IntersectionResult Result)
{
Vector2 B = A2 - A1;
Vector2 D = B2 - B1;
float bDotDPerp = B.X * D.Y - B.Y * D.X;
// if b dot d == 0, it means the lines are parallel so have infinite intersection points
if (bDotDPerp == 0)
{
return(false);
}
Vector2 C = B1 - A1;
float T = (C.X * D.Y - C.Y * D.X) / bDotDPerp;
if (T < 0 || T > 1)
{
return(false);
}
float U = (C.X * B.Y - C.Y * B.X) / bDotDPerp;
if (U < 0 || U > 1)
{
return(false);
}
Vector2 Dir = Vector2.Normalize(A2 - A1);
Vector2 Normal = Vector2.Zero;
Vector2 Ref = Vector2.Reflect(Dir, Normal);
Result = new IntersectionResult(Dir, A1 + T * B, Normal, Ref);
return(true);
}
public static bool Intersects(Vector2 Start, Vector2 End, Rectangle Rect, out IntersectionResult Result)
{
IntersectionResult ResA = new IntersectionResult();
IntersectionResult ResB = new IntersectionResult();
ref IntersectionResult CurRes = ref ResA;
public RaycastResult(IntersectionResult Intersection, GameUnit Unit)
{
this.Intersection = Intersection;
this.Unit = Unit;
}