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This is the coolest thing I have seen whole week: http://r.weavesilk.com/?v=4&id=hhl105bpk73 http://r.weavesilk.com/?v=4&id=hhl105bpk73 Can anybody please exp

This is the coolest thing I have seen whole week: http://r.weavesilk.com/?v=4&id=hhl105bpk73 http://r.weavesilk.com/?v=4&id=hhl105bpk73 Can anybody please explain how does it work?

pstadler 11y ago
"Moth cave" http://r.weavesilk.com/?v=4&id=rya105c4jxy http://r.weavesilk.com/?v=4&id=rya105c4jxy
- lalwanivikas 11y ago
  Human: http://r.weavesilk.com/?v=4&id=ugu105c8448 http://r.weavesilk.com/?v=4&id=ugu105c8448
  - pstadler 11y ago
    Rocket launch: http://r.weavesilk.com/?v=4&id=jpw105cfr2t http://r.weavesilk.com/?v=4&id=jpw105cfr2t
    - anon4 11y ago
      Summoning: http://r.weavesilk.com/?v=4&id=ryv106dnrlk http://r.weavesilk.com/?v=4&id=ryv106dnrlk
deleted 11y ago
[deleted]
mynegation 11y ago
I looked at the code of either this thing or something similar in the past (don't remember). Basically there is a "swarm of particles" that follows your mouse when you draw, and they orbit around it with some noise added, as if it was gravitation simulation. The path of colour trails each particle and it may or may not change over time. So if you stay in one place for long, you get more colour and if you do a quick stroke, particles follow quickly and trail becomes thin. You can also add mirror or star symmetry.
jfoutz 11y ago
(didn't check the source) It looks like x,y and time as a seed for a function that paints (additively) a complicated line. click 1 spot over and over, quickly - you'll get a white line that gets a little thicker as it's fully saturated. click a different spot over and over, but hold it a little longer, you'll see the delta-t effect tracing the same pattern over and over. one way to implement such a thing, you'd want a function to look at a pixel and it's nearby neighbors, and brighten. red = red+10 or some such. next you'd want a linedraw function, given x,y,t - pick a spot near x and y, step a few pixels away in some direction, brighten the stuff between. repeat that, with a bias tward the direction you're travelling, and cap it out some how. something like steps=(x+y+t)%100 +10. min length is 10, max is 100, kinda vary with time. Anyway, that's the basics. you can futz around with the specific functions to give a nice effect. edit ah, mynegation's comment is probably the truth. particles with inertia would do just the right thing for biasing direction.

This is the coolest thing I have seen whole week: http://r.weavesilk.com/?v=4&id=hhl105bpk73 http://r.weavesilk.com/?v=4&id=hhl105bpk73 Can anybody please explain how does it work?

pstadler 11y ago

"Moth cave" http://r.weavesilk.com/?v=4&id=rya105c4jxy http://r.weavesilk.com/?v=4&id=rya105c4jxy

lalwanivikas 11y ago
Human: http://r.weavesilk.com/?v=4&id=ugu105c8448 http://r.weavesilk.com/?v=4&id=ugu105c8448
- pstadler 11y ago
  Rocket launch: http://r.weavesilk.com/?v=4&id=jpw105cfr2t http://r.weavesilk.com/?v=4&id=jpw105cfr2t
  - anon4 11y ago
    Summoning: http://r.weavesilk.com/?v=4&id=ryv106dnrlk http://r.weavesilk.com/?v=4&id=ryv106dnrlk

deleted 11y ago

[deleted]

mynegation 11y ago

I looked at the code of either this thing or something similar in the past (don't remember). Basically there is a "swarm of particles" that follows your mouse when you draw, and they orbit around it with some noise added, as if it was gravitation simulation. The path of colour trails each particle and it may or may not change over time. So if you stay in one place for long, you get more colour and if you do a quick stroke, particles follow quickly and trail becomes thin. You can also add mirror or star symmetry.

jfoutz 11y ago

(didn't check the source) It looks like x,y and time as a seed for a function that paints (additively) a complicated line. click 1 spot over and over, quickly - you'll get a white line that gets a little thicker as it's fully saturated. click a different spot over and over, but hold it a little longer, you'll see the delta-t effect tracing the same pattern over and over. one way to implement such a thing, you'd want a function to look at a pixel and it's nearby neighbors, and brighten. red = red+10 or some such. next you'd want a linedraw function, given x,y,t - pick a spot near x and y, step a few pixels away in some direction, brighten the stuff between. repeat that, with a bias tward the direction you're travelling, and cap it out some how. something like steps=(x+y+t)%100 +10. min length is 10, max is 100, kinda vary with time. Anyway, that's the basics. you can futz around with the specific functions to give a nice effect. edit ah, mynegation's comment is probably the truth. particles with inertia would do just the right thing for biasing direction.