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OpenSimplexNoise noise;
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###.png");
println(frameCount,"/",numFrames);
if (frameCount==numFrames)
exit();
}
}
//////////////////////////////////////////////////////////////////////////////
int samplesPerFrame = 1;
int numFrames = 80;
float shutterAngle = .8;
boolean recording = true;
void setup(){
size(500,500);
result = new int[width*height][3];
noise = new OpenSimplexNoise();
}
int N = 40;
float b = 50;
float l = 10;
float scl = 0.01;
float r = 0.6;
void draw_(){
background(0);
stroke(255);
strokeWeight(2);
for(int i=0;i<N;i++){
for(int j=0;j<N;j++){
float x = map(i,0,N-1,b,width-b);
float y = map(j,0,N-1,b,height-b);
float theta = 25*(float)noise.eval(scl*x,scl*y,r*cos(TWO_PI*t),r*sin(TWO_PI*t));
float vx = l*cos(theta);
float vy = l*sin(theta);
float intensity = 0.1+1.5*ease(map((float)noise.eval(200+scl*x,scl*y,r*cos(TWO_PI*t),r*sin(TWO_PI*t)),-1,1,0,1),3.5);
vx*=intensity;
vy*=intensity;
line(x,y,x+vx,y+vy);
}
}
}
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