int count = 4000; float t = 0, dt = 0.01; float spinSpeed = 75 * 0.01/dt; int seed; void setup() { size(300, 300); colorMode(HSB, TWO_PI, 1.0, 1.0, 1.0); smooth(); background(#ffffff); seed = (int) random(2531, 15824); noStroke(); } void draw() { clear(t); randomSeed(seed); for (int i = 0; i < count; i++) { particle(t); } t += dt; } void particle(float t) { /*float r = random(0, 1); float a = random(0, TWO_PI); float x = r * cos(a); float y = r * sin(a); float rr = 1.5 * r * sin(r + t) + x * y; float aa = TWO_PI * sin(t) * cos(a + t) + cos(x * t * t); float d = 2;//abs(5 - 5 * rr); float xx = rr * cos(aa); float yy = rr * sin(aa);*/ float x = random(-1, 1); float y = random(-1, 1); float r = dist(0, 0, x, y); float a = atan2(y, x); float xx = x * cos(t - y); float yy = sin(y * t); float rr = dist(0, 0, xx, yy); float aa = atan2(yy, xx); float mx = map(mouseX, 0, width, -1, 1); float my = map(mouseY, 0, height, -1, 1); stroke( (aa - a + TWO_PI * 100) % TWO_PI, 1, 1 * 0, 0.1 + 0.1 * cos(aa + t) ); float d; //d = abs(8 - 5 * dist(mx, my, xx, yy)); d = 1 + 5 * dist(xx, yy, 0, 0); strokeWeight(d); float spin = random(-spinSpeed, spinSpeed) * t + random(0, PI); float px = map(xx, -1, 1, 0, width); float py = map(yy, -1, 1, 0, height); line( px - d * cos(spin), py - d * sin(spin), px + d * cos(spin), py + d * sin(spin) ); } void clear(float t) { noStroke(); fill(t/3 % TWO_PI, 0.05, 1, 0.05); rect(0, 0, width, height); }

class Particle { }

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Valerio Orlandini

8 Oct 2011

8 Oct 2011

great!

maruska polakova

29 Jul 2012

29 Jul 2012

Thank you for a beautifully looking work!

I really don't want to sound ungrateful, BUT..I tried to actually use your code.

(Well in my understanding that's what Open Processing is actually about - sharing code with others not, only showing off our work. Or am I wrong?)

And ,sadly, it really doesn't seem that you wish anyone else ever uses it!

You know for you while you working at it it's easy to clean up your code(remove not used variables, even a class(our programming teacher wiould fail us for this! ;-)and WRITE COMMENTS! While for any one else afterwords it's really a pain to work with it!

Well- must say this, but still thanks!

I really don't want to sound ungrateful, BUT..I tried to actually use your code.

(Well in my understanding that's what Open Processing is actually about - sharing code with others not, only showing off our work. Or am I wrong?)

And ,sadly, it really doesn't seem that you wish anyone else ever uses it!

You know for you while you working at it it's easy to clean up your code(remove not used variables, even a class(our programming teacher wiould fail us for this! ;-)and WRITE COMMENTS! While for any one else afterwords it's really a pain to work with it!

Well- must say this, but still thanks!

21 Oct 2010