This is a rewrite for AfterDark of a screensaver I wrote for the Apple ][ back in the old days. It's also FreeWare.
It phase-shifts a plot of the function:
x = cos (w1 * omega + f1) * cos (w2 * omega + f2)
y = cos (w3 * omega + f3) * cos (w4 * omega + f4)
You can add your own function parameters to Trigo, but you need ResEdit to do so. The figure data is stored in ‘TRIG’ resources, editable using the included template. These resources need to be numbered consecutive starting at ID=1. The first time Trigo encounters your new parameters, it pre-calculates its data and stores it in ‘CALC’ resources. Don’t forget to edit the corresponding ‘MENU’ resource! Happy Hacking :-)
History:
1.0: Initial release
1.1: Trigo now, by request of Lloyd Wood <L.H.Wood@lut.ac.uk>, supports Colour. You can choose between not using colours, using plain colours, and using wild colours.
1.2: Changed colouring scheme a little, and added dot-sizes up to 5x5.
Got a Mac? Got a screensaver? Read the Screensaver FAQ by Lloyd Wood! The only drawback is that an AfterDark module has to have a bug to get mentioned in the FAQ…
