Hi im new to Phys2D.
I created a Box like this:
private StaticBody box = new StaticBody( new Box(100.0f,5.0f) );
box.setPosition(10.0f, 10.0f);
w.add(box); //add box to the world
Does set position method sets the position of my box relative to its center or to the upper left corner?
I mean is the upper left corner of the box will be in 10,10 or the center is the one that will be in 10,10
Thank you.
Depends on your perspective. Object when created have a position 0,0. If you run with depending on how you render this could be the top left corner or center.
As an example.
I use an OffsetX = screenWidth /2; when I draw the object based on it’s current position. This makes the system use X0 representing the center of the world. So a X-20 would be screenWidth /2 - 20.
If I were to use a absolute screen position then if I wanted to put my box near the bottom of the screen I would
Body.setPosition(0, screenHeight - 5);
then when I draw the object from the position I wouldn’t apply an offset. The body would be drawn near the bottom of the screen.
So X- is to the left of 0. and 0 is a representation of where your screen is relative to any offset.
In general for Body, setPosition define the position of the center of mass of the body.
So in your case, it is the position of the center of your box.
Thank you very much for your help 