You bring up some interesting points. I guess you could compare the DOM to the OpenGL/DirectX scene, with some differences. I'm not entirely convinced that the

You bring up some interesting points. I guess you could compare the DOM to the OpenGL/DirectX scene, with some differences. I'm not entirely convinced that the graphics rendering is less complex though, considering occlusion lightning etc. My main point was really yhat re-building the entire scene is entirely possible and a lot easier to code than manipulating a stateful scene. I guess physics is stateful since the programmer only sets initial conditions and the engine moves it forward, so the final state is unknown to the programmer. Dom is a fine tool but I would like a better separation between the model and the view, which re-rendering gives you in a straightforward way. The other way is data binding, but it's considerably more involved and probably not worth it for 99% of the cases IMO.