pretty times

before new sx() code, not using sx() or SX()

got image: 0.014792
calc done: 0.036495
put image: 0.042765
painted: 0.042994

using SX()

got image: 0.014536
calc done: 0.102179
put image: 0.108280
painted: 0.108462

using new sx() code, screen_trans full

got image: 0.015136
calc done: 0.064018
put image: 0.073003
painted: 0.073201

using new sx() code, screen_trans fast

got image: 0.015426
calc done: 0.038946
put image: 0.044588
painted: 0.044651

using *pixel() instead of XPutPixel()  (depends on 32bit at the moment)
got image: 0.014957
calc done: 0.025516
put image: 0.030935
painted: 0.031091

write the pixels in RAM order!  (X first, not Y!)
got image: 0.015410
calc done: 0.020330
put image: 0.026142
painted: 0.026336

use px counter instead of pixel()
got image: 0.014424
calc done: 0.017716
put image: 0.023268
painted: 0.023412

-------------------------------------
with proper calculation back:

using mod()
got image: 0.015978
calc done: 0.260967
put image: 0.266895
painted: 0.267071

with mod_fast()
got image: 0.015266
calc done: 0.145194
put image: 0.158469
painted: 0.172426

without hypot()
got image: 0.015825
calc done: 0.112243
put image: 0.118708
painted: 0.118894

with sqrt(x*x+y*y)
got image: 0.022136
calc done: 0.143840
put image: 0.150070
painted: 0.150431

simplify to remove hypot
got image: 0.014886
calc done: 0.112489
put image: 0.118659
painted: 0.118960

-- wasn't actually painting the pattern, now I am

got image: 0.014417
calc done: 0.234276
put image: 0.247313
painted: 0.252631

use qsin - helps a lot!
got image: 0.018809
calc done: 0.152238
put image: 0.156406
painted: 0.156586

use qatan2 - was expecting a bit faster
got image: 0.014191
calc done: 0.095776
put image: 0.109040
painted: 0.123130

use qatan2 with deg already built in
got image: 0.011121
calc done: 0.079823
put image: 0.086340
painted: 0.086543

full-screen, remove unneeded SX() SY()
 (set processor to stay on high speed)
got image: 0.015257
calc done: 0.084101
put image: 0.090604
painted: 0.090796

having a prob where it takes a bit longer dunno why
got image: 0.014499
calc done: 0.086877
put image: 0.093420
painted: 0.093605

damn, I had disabled optimisation! now with -O3:
got image: 0.014690
calc done: 0.071439
put image: 0.077648
painted: 0.077807