Bias works a bit like the brightness control on your TV, Gain a bit like the contrast control. The Colour chooser is where a better interface would be really nice. You set the range of colours in the texture by specifying four values for red , green and blue . The texture colour is interpolated between these four colours. All colour values should be between 0 and 1.
Source code Feel free to have a look at the source code.
This is not at present release quality code though, i.e. I will be continuing to refine and optimise it. Acknowledgements Most of the clever ideas in the machine came from other people. AP Professional, 1994. AP Professional 1994.