public bool CollidesWith(IVector2D movement, Rectangle rectangle)
{
IVector2D envelopeOrigin = Origin.Add(movement);
var envelope = new Rectangle(envelopeOrigin, Size);
envelope = envelope.EnlargeRectangleRectangle(this);
if (envelope.CollidesWith(rectangle))
{
float min = Size.X.Minimum(Size.Y) / 4.0f;
float minimumMoveDistance = min.Maximum(Helper.Epsilon);
if (movement.Length() < minimumMoveDistance)
{
return true;
}
IVector2D halfMovement = movement.Divide(2.0f);
envelope = new Rectangle(Origin.Add(halfMovement), Size);
return CollidesWith(halfMovement, rectangle) ||
envelope.CollidesWith(halfMovement, rectangle);
}
return false;
}
public bool CollidesWith(IVector2D movement, Rectangle rectangle)
{
IVector2D halfMovement = movement.Divide(2.0f);
float movementDistance = movement.Length();
IVector2D envelopeCenter = Center.Add(halfMovement);
float envelopeRadius = Radius + movementDistance / 2.0f;
var envelope = new Circle(envelopeCenter, envelopeRadius);
if (envelope.CollidesWith(rectangle))
{
float minimumMoveDistance = (Radius / 4.0f).Maximum(Helper.Epsilon);
if (movementDistance < minimumMoveDistance)
{
return true;
}
envelope = new Circle(envelope.Center, Radius);
return CollidesWith(halfMovement, rectangle) ||
envelope.CollidesWith(halfMovement, rectangle);
}
return false;
}