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Create An Infinite Floor in Cheetah3D

After watching yet another GreyscaleGorilla tutorial, this time on creating an infinite floor I thought it might be worth converting to Cheetah3D. I may record a screencast of this one at some point in the future but for now I’ve gone with an old school method.

Creating an empty room with soft floor shadows was always something I’d wanted to achieve with Cheetah – a lot of the work I do with it is used on websites I create and I think the product style renders that I tend to favour look really well with some soft floor shadows.

Here’s how to do it…

1) Assuming you have a scene with some kind of model in it you’re going to need some kind of floor for the shadows to be cast upon. Go ahead and add a plane or a disc and scale up until it’s large enough to catch your shadow.

2) From the add material menu – select shadowmat from the special menu and drag the material to your floor object.

3) Add the radiosity tag to your camera object and leave the default settings

4) Fire off a quick render to test your scene and check your shadows. Sometimes you’ll find that your shadows are hitting the edge of your floor object (see the example below).


5) In order to correct this you need to adjust the white point of your shadowmat – typically I adjust in 0.1 increments (either up or down re-rendering each time until you get the desired results)


That’s pretty much it, there are a few things you can do to tweak from here on in such as playing with the scale of your floor object but this should get you to a point where you’re good to go.

Here’s an example using a background image on the camera which I think really helps.


Thanks for reading!

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