2 Commits

Author	SHA1	Message	Date
Dag-Erling Smørgrav	23e6278ed9	Replace the cosine table with a sine table, which (due to the vagaries of ... rounding) has better spread. Implement fp16_sin() to go along with fp16_cos(). In the rendering loop, switch from addition to subtraction so the center of the pattern will be a trough rather than a peak. This is completely arbitrary, of course, but looks better to me.	2016-01-02 16:40:37 +00:00
Dag-Erling Smørgrav	a50b01d224	17 years and change after I wrote warp_saver, here's a simple plasma effect ... (currently only three circular patterns) which requires quite a bit of fixed-point arithmetic, including sqrt() and cos(). Happy New Year!	2016-01-01 04:04:40 +00:00