function restartGeometryCaches(){
        contactMeshCache.restart();
        contactMeshCache.hideCached();

        cm2contactMeshCache.restart();
        cm2contactMeshCache.hideCached();

        distanceConstraintMeshCache.restart();
        distanceConstraintMeshCache.hideCached();

        normalMeshCache.restart();
        normalMeshCache.hideCached();
    }
Demo framework class. If you want to learn how to connect Cannon.js with Three.js, please look at the examples/ instead.
@class Demo
@constructor
@param {Object} options