CTor
Collapse this Circle. Means that the radius is set to 0.
Returns the center position of this Circle
Returns the current position as Vector2
Returns the current radius
Increase current size.
Checks whether this Circle intersects with an other. If, and the parameter 'overlap' isn't null, the colliding circle is stored there.
Checks if this Circle is empty (if it's collapsed) with SDL_RectEmpty.
Move the object.
Move the object.
Supported operations: +, -, *, /, %
opEquals: compares two rectangles on their coordinates and their size (but not explicit type).
Set a new position with coordinates.
Set a new position with a vector.
Replace the current size.
Circle defines a circle structure.