calculateWorldAABB method
@todo use abstract for these kind of methods
Implementation
@override
void calculateWorldAABB(Vec3 pos,Quaternion quat,Vec3 min,Vec3 max) {
double r = radius;
min.x = pos.x - r;
max.x = pos.x + r;
min.y = pos.y - r;
max.y = pos.y + r;
min.z = pos.z - r;
max.z = pos.z + r;
}