Once again, not having the ability to work with the wterrain2 or sterrain opcodes has me looking at ways to play with the standard wterrain opcode. This example:
https://soundcloud.com/st-csound/cornoid
is a simple experiment using the wterrain opcode in Csound to create a cornoid. The first 10 sec are the standard ellipse produced by wterrain followed by 10 sec with a cornoid curve applied. The next three 20 sec segments are the hybrid cornoid being rotated, rotated with a curve parameter being simultaneously increased, and finally rotation with the curve parameter and radius of X&Y being increased.
For me one of the interesting aspects of this approach is the ability to still use different curves/shapes beyond the ellipse. While possibly not as readily flexible as the other opcodes it still allows for some experimentation.
Here's a page of some possible curves:
https://mathcurve.com/courbes2d.gb/courbes2d.shtml
Here:
you can see a plotted example of an "Asteroid" I took from the above link. Playing "t" will draw the curve. Raising the value of the "a" slider just increases the overall size.
And here:
the Asteroid can also be rotated using slider "b".
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