pretzel
int[][] result; | |
float t, c; | |
float ease(float p) { | |
return 3*p*p - 2*p*p*p; | |
} | |
float ease(float p, float g) { | |
if (p < 0.5) | |
return 0.5 * pow(2*p, g); | |
else | |
return 1 - 0.5 * pow(2*(1 - p), g); | |
} | |
float mn = .5*sqrt(3), ia = atan(sqrt(.5)); | |
void push() { | |
pushMatrix(); | |
pushStyle(); | |
} | |
void pop() { | |
popStyle(); | |
popMatrix(); | |
} | |
float c01(float g) { | |
return constrain(g, 0, 1); | |
} | |
void draw() { | |
if (!recording) { | |
t = mouseX*1.0/width; | |
c = mouseY*1.0/height; | |
if (mousePressed) | |
println(c); | |
draw_(); | |
} else { | |
for (int i=0; i<width*height; i++) | |
for (int a=0; a<3; a++) | |
result[i][a] = 0; | |
c = 0; | |
for (int sa=0; sa<samplesPerFrame; sa++) { | |
t = map(frameCount-1 + sa*shutterAngle/samplesPerFrame, 0, numFrames, 0, 1); | |
draw_(); | |
loadPixels(); | |
for (int i=0; i<pixels.length; i++) { | |
result[i][0] += pixels[i] >> 16 & 0xff; | |
result[i][1] += pixels[i] >> 8 & 0xff; | |
result[i][2] += pixels[i] & 0xff; | |
} | |
} | |
loadPixels(); | |
for (int i=0; i<pixels.length; i++) | |
pixels[i] = 0xff << 24 | | |
int(result[i][0]*1.0/samplesPerFrame) << 16 | | |
int(result[i][1]*1.0/samplesPerFrame) << 8 | | |
int(result[i][2]*1.0/samplesPerFrame); | |
updatePixels(); | |
saveFrame("f###.gif"); | |
if (frameCount==numFrames) | |
exit(); | |
} | |
} | |
////////////////////////////////////////////////////////////////////////////// | |
int samplesPerFrame = 8; | |
int numFrames = 240; | |
float shutterAngle = 1; | |
boolean recording = false; | |
void setup() { | |
size(750, 750, P3D); | |
pixelDensity(recording ? 1 : 2); | |
smooth(8); | |
result = new int[width*height][3]; | |
rectMode(CENTER); | |
fill(32); | |
noStroke(); | |
} | |
float x, y, z, tt; | |
int N = 280; | |
int p = 3, q = 4; | |
float r = 80; | |
float x(float ph) { | |
return r*(1.5 + cos(q*ph))*cos(p*ph); | |
} | |
float y(float ph) { | |
return r*(1.5 + cos(q*ph))*sin(p*ph); | |
} | |
float z(float ph) { | |
return -r*sin(q*ph); | |
} | |
float d, lt, qq, rr = 18; | |
color[] cols = { #fa4020, #202020, #418a9f }; | |
void draw_() { | |
background(250); | |
push(); | |
translate(width/2, height/2 - 40); | |
for (int i=0; i<N; i++) { | |
lt = (1-t + i/float(N))%1; | |
randomSeed(i); | |
qq = TWO_PI*i/N; | |
x = x(qq) + randomGaussian()*rr; | |
y = y(qq) + randomGaussian()*rr + lerp(-90,90,lt); | |
z = z(qq) + randomGaussian()*rr; | |
push(); | |
translate(x*cos(TWO_PI*t) + z*sin(TWO_PI*t), y, z*cos(TWO_PI*t) - x*sin(TWO_PI*t)); | |
fill(cols[i%3]); | |
d = map(sin(TWO_PI*t - qq), 1, -1, 0, 1); | |
d = max(0,2*lt-1); | |
d *= lerp(.7,6,sq(random(1))); | |
ellipse(0, 0, 16*d, 16*d); | |
pop(); | |
} | |
pop(); | |
} |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment