h' in opts)) {
            opts.width = 1.5;
          }
          if (!('height' in opts)) {
            opts.height = 0.25;
          }
          if (!('depth' in opts)) {
            opts.depth = 1.5;
          }

          var firstCubeOpts = Object.assign({rotation: {x: 0, y: 45, z: 0}}, opts);
          firstCubeOpts.mixin = 'layer-1--light';

          var parentCube = createCube(firstCubeOpts);
          var firstCube = parentCube;

          var offsetX = 0;
          var offsetY = parseFloat((opts