public CollisionCircle(CollisionCircle circle)
{
_center = circle.getCenter();
_radius = circle.getRadius();
_object = circle.getObject();
_type = circle.getType();
}
//Test where collisioncircle fits
private int GetIndex(CollisionCircle circle)
{
//parent is -1 if circle cannot fit into the nodes it will belong to this leaf
int index = -1;
//test if the circle fits in the top quadrant of the rect
bool top = (circle.getCenter().y + circle.getRadius() < _limits.getCenter().y + _limits.getHeight() / 2 && circle.getCenter().y - circle.getRadius() > _limits.getCenter().y);
bool bottom = (circle.getCenter().y + circle.getRadius() < _limits.getCenter().y&& circle.getCenter().y - circle.getRadius() > _limits.getCenter().y - _limits.getHeight() / 2);
//test if the circle fits completely in the left quadrant
if (circle.getCenter().x + circle.getRadius() < _limits.getCenter().x&&
circle.getCenter().x - circle.getRadius() > _limits.getCenter().x - _limits.getWidth() / 2)
{
if (top)
{
index = 0;
}
else if (bottom)
{
index = 2;
}
}
//else test if it fits completely in the right quadrant
else if (circle.getCenter().x + circle.getRadius() < _limits.getCenter().x + _limits.getWidth() / 2 &&
circle.getCenter().x - circle.getRadius() > _limits.getCenter().x)
{
if (top)
{
index = 1;
}
else if (bottom)
{
index = 3;
}
}
//returns -1 if circle doesn't fit completely into any quadrant
return(index);
}