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Bleuje/iterationexperiment.pde

Last active July 3, 2019 18:17
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iterationexperiment.pde
// Processing code by Etienne JACOB
// motion blur template by beesandbombs
// opensimplexnoise code in another tab might be necessary
// --> code here : https://gist.github.com/Bleuje/fce86ef35b66c4a2b6a469b27163591e
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();
}
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("fr###.gif");
println(frameCount,"/",numFrames);
if (frameCount==numFrames)
exit();
}
}
//////////////////////////////////////////////////////////////////////////////
int samplesPerFrame = 1;
int numFrames = 60;
float shutterAngle = .6;
boolean recording = true;
OpenSimplexNoise noise;
float R = 200;
float AX,AY;
float ATTRACTION = 1.3;
class Thing{
float seed = random(10,1000);
float x0,y0,x1,y1,ax,bx;
Thing(int i){
float reduce_square = 1.2;
x0 = R*map(i+1,0,n-1,-1,1)/reduce_square;
y0 = R*map(0,0,n-1,-1,1)/reduce_square;
x1 = R*map(0,0,n-1,-1,1)/reduce_square;
y1 = R*map(i+1,0,n-1,-1,1)/reduce_square;
AX = R;
AY = R;
}
PVector pos(float p,float tt){
p = constrain(p,0,1);
float y = map(p,0,1,y0,y1);
float rad = 0.4;
float change = 2.0;
float freq = 8.0;
float variation = 0.012;
float intensity = ease(pow(sin(PI*p),1.2),1.5)+0;
float pp = p;
float dx = 0.3*intensity*200*(float)noise.eval(SEED + rad*cos(TWO_PI*(freq*pp - tt)), rad*sin(TWO_PI*(freq*pp - tt)),change*p,variation*x0);
float dy = 0.3*intensity*150*(float)noise.eval(2*SEED + rad*cos(TWO_PI*(freq*pp - tt)), rad*sin(TWO_PI*(freq*pp - tt)),change*p,variation*x0);
float x = lerp(map(p,0,1,x0,x1)+dx,AX,pow(sin(PI*p),3.0)/ATTRACTION);
y = lerp(y,AY,pow(sin(PI*p),3.0)/ATTRACTION);
return new PVector(x,y+dy);
}
int K = 2+floor(13*pow(random(1),2.0));
void show_dots(float tt){
for(int i=0;i<K;i++){
int N = 100;
for(int q=0;q<N;q++){
float p = map(i+1-tt+0.003*q,0,K,-0.1,1.1);
PVector dot = pos(p,t);
strokeWeight(4.0*pow(map(q,0,N,1,0),1.5));
stroke(255,30);
point(dot.x,dot.y);
}
}
}
int m = 600;
void show_curve(){
for(int i=0;i<=m;i++){
float p = map(i,0,m,0,1);
PVector dot = pos(p,t);
strokeWeight(1.7);
stroke(255,30);
point(dot.x,dot.y);
}
}
float offset = random(1);
void show(){
float tt = (t+offset)%1;
show_curve();
show_dots(tt);
strokeWeight(4.0);
stroke(255,255);
point(x0,y0);
point(x1,y1);
}
}
int n = 80;
Thing[] array = new Thing[n];
float SEED;
void setup(){
size(600,600,P3D);
result = new int[width*height][3];
noise = new OpenSimplexNoise();
SEED = random(10,1000);
AX = R*random(-1,1);
AY = R*random(-1,1);
for(int i=0;i<n;i++){
array[i] = new Thing(i);
}
}
void draw_(){
background(0);
push();
translate(width/2,height/2);
for(int i=0;i<n;i++){
array[i].show();
}
pop();
}
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