AndyPeck

24th January 2005 00:49 UTC

Custom moving particles
Hey guys, I got this idea from one of (I think it was) Tuggummi's presets. Basically he created moving particles using superscopes. Not too advanced of an idea, but I like it because it gives you control of the particle.
Anyways... I'm trying ot replicate what he did, but am having one problem. As long as I clear every frame, everything looks fine, but if I don't, I sometimes get a washout effect of whatever color the particle is. I think that this has something to do with the dynamic shift, but I am not sure.
Anyways, if anyone can help me with this, I would appreciate it.
Andy

^..^

24th January 2005 22:32 UTC

With "washout effect" you mean that the whole screen becomes white, right?
Well, first of all it has to do with the movement r=0. Cause this sets all lines running from the middle to the border of the screen, like that what is drawn from the middle upwards.
(hope you are a bit familiar with polar coordinates and understand this, if not feel free to ask again)

Now, if this line is completly white (from the middle till the border of the screen) the whole screen becomes white.
As long as "clear every frame" is disabled, the next frame will be rendered upon the last. So when the ball is moved to the upper middle by the dyn-shift and is big enough, the whole screen becomes white as soon as the old frame passes the r=0 movement.