public static void DrawCuboid <TVertexParameters>(
this IShapeDrawer3 <TVertexParameters> drawer, Vector3 xyz, Vector3 whd, TVertexParameters parameters)
{
var(x, y, z) = xyz;
var(w, h, d) = whd;
drawer.DrawCuboid(x, y, z, w, h, d, parameters);
}
public static void DrawCube <TVertexParameters>(
this IShapeDrawer3 <TVertexParameters> drawer, Vector3 center, float scale, TVertexParameters parameters)
{
const float u = 0.5f;
var(x, y, z) = center;
drawer.DrawCuboid(x - u * scale, y - u * scale, z - u * scale, scale, scale, scale, parameters);
}