B2.setScale

Available since: Gideros 2011.6
Class: b2

Description

Box2D is tuned for MKS (meters-kilogram-second) units and the size of moving objects should roughly between 0.1 and 10 meters.
If you directly use the pixels as your units, unfortunately this will lead to a poor simulation and possibly weird behavior.

Gideros uses an internal scale system to convert between meters and pixels. By default, the value of this scale is 30
which means 1 meter = 30 pixels. This is a global value and effects all the physics system. Therefore, it is recommended to set this
value once before any physical objects are instantiated (e.g. right after calling `require "box2d"`)

 b2.setScale(scale)

Parameters

scale: (number) - the global pixels to meters scale