snoozin_hermit

3rd April 2004 22:41 UTC

Need a spin
have made avs's that could of used a spin but haven't learned how... BUT this one is just screaming for a spin, so guess I better learn. What I'd like to do is have it spin 2 revolutions counterclockwise and reverse to 3 revs clockwise and go back and forth but slow enough that it don't blend or lose what it looks like.
Any help would be greatly appreciated

Raz

3rd April 2004 23:11 UTC

Any particular reason you have one of my entire presets before you mangle it to death with effects?

Make you own stuff from scratch then come back.

snoozin_hermit

4th April 2004 07:24 UTC

reply to raz
don't go claiming credit for whole thing cause there other folks on there to. when and if I should publish it everyone will get credit due... right now it is being used for learning which is why it has number and not a name. and if you DON'T want anyone to learn off your stuff KEEP it on your puter so noone can get it. meanwhile I still need to learn spin...

TomyLobo

4th April 2004 15:10 UTC

if you just want to spin an image around the center, modify r (add 0..2PI for counter-clockwise rotation or subtract 0..2PI for clockwise rotation)

to spin 2D rectangular coordinates use the following formulae:
(takes inx/iny as input, rot as rotation and sets outx/outy)

//Frame:
rot=something // in radians (0..2PI)
cosrot=cos(rot); //cache cosinus
sinrot=sin(rot); //and sinus so we don't have to recalculate it every pixel

//Pixel:
//these 2 lines rotate (inx/iny) around (0/0)
//counter-clockwise with the angle given in rot
outx=inx*cosrot-iny*sinrot;
outy=inx*sinrot+iny*cosrot;

UIUC85

4th April 2004 17:30 UTC

any spin would look like crap because the fps are so low anyways

snoozin_hermit

4th April 2004 18:06 UTC

Thanks again TomyLobo... but as usual I'm doing something wrong. Thing only seems to move 5 or6 degrees instead of making complete rotations. That is why I use these learning avs's, I need to see it in the avs and fiddle with it from there to learn.

UIUC85

4th April 2004 19:08 UTC

why dont you just set up a dynamic movement with r=r+.01 or something?

Raz

4th April 2004 21:43 UTC

It wouldn't piss me off if it actually had any vague reference to my work in there, it's just before everything so it has absolutely no effect on the final outcome of the preset, there are no mentions of credit to anyone for this and randomly placed same dynamic movements you've obviously stolen from elsewhere because you have no idea how to rotate anything and all you seem to have done of your own accord is shoved in an interleave and a bump.

However, i will explain how to make it rotate.
Remove everything before the interleave, it does nothing.
add a Dynamic movement
Frame:
t=t+0.1;
Pixel
d=d*0.7;
r=r+t;

Grid size 1x1

snoozin_hermit

4th April 2004 21:53 UTC

not sure if I'm right but it seems like sometimes with some dm's they might guess you would call it override some movements ability to act (like if I hit starburst I can see the starburst but if I hit tunnel I don't seem to see it tunnel) and if that's right maybe the dm is in some way preventing the spin from acting... is this possible??

snoozin_hermit

4th April 2004 22:14 UTC

sorry Raz, didn't have your last reply when I made my last one. Also sorry for upsetting you but I'm an uneducated dummy who like avs and trying to self-teach (with help from here) yours just happen to be in that one that when I seen it in that way thought it need to spin. and like I said it just for learnin and is why no credit is yet given to anyone, which if I ever get good enough to publish a pack (maybe in 20 or 30 years) EVERYONE will get credit due and thanks for help with spin

hungryskull

5th April 2004 23:28 UTC

Default movements are evil, avoid them at all cost. Use DM's.