code: public static void scale(GVRMesh mesh, float x, float y, float z) {
          final float [] vertices = mesh.getVertices();
          final int vsize = vertices.length;
  
          for (int i = 0; i < vsize; i += 3) {
              vertices[i]     *= x;
              vertices[i + 1] *= y;
              vertices[i + 2] *= z;
          }
  
          mesh.setVertices(vertices);
      }
docs: Scale the mesh at x, y and z axis.
  
  @param mesh Mesh to be scaled.
  @param x Scale to be applied on x-axis.
  @param y Scale to be applied on y-axis.
  @param z Scale to be applied on z-axis.