ericsinger

Been looking everywhere for this in the docs but can't find it. In what units are the scale values? For example, the default values for the world are 5/5/5. 5 whats?

scale-units-for-jit-phys-world-and-body

if you use the default phys.world gravity attribute, and you want to simulate gravity on earth, then interpret the unit as one meter.

http://bulletphysics.org/mediawiki-1.5.8/index.php/Scaling_The_World

they are whatever you want them to be.
if you use the default phys.world gravity attribute, and you want to simulate gravity on earth, then interpret the unit as one meter.

http://bulletphysics.org/mediawiki-1.5.8/index.php/Scaling_The_World


Right, but clearly they have a (relative) relation to the rendering window. Is the view (size) of the world related to camera location only, and are there any metrics for calculating this?

not entirely sure what you're asking, but yes 1 unit in physics world equals 1 unit in gl world.

I figured out what my confusion was. The apparent size of a worldbox relative to the window in which it is viewed is dependent on the camera location - in the case I'm constructing, @camera 0 0 -n. For a 4:3 aspect window, if I normalize the world to 1.3 1 1, a camera value of 0 0 -3.41 causes the world box to fill the window, which is what I was looking for. (Why -3.41, I'm not sure.)

scale units for jit.phys.world and .body?