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@beesandbombs
Created June 26, 2018 11:22
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flower donut
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("g###.gif");
if (frameCount==numFrames)
exit();
}
}
//////////////////////////////////////////////////////////////////////////////
int samplesPerFrame = 4;
int numFrames = 180;
float shutterAngle = .6;
boolean recording = false;
void setup() {
size(720, 720, P3D);
pixelDensity(recording ? 1 : 2);
smooth(8);
result = new int[width*height][3];
noFill();
strokeWeight(10);
ortho();
}
void strand(float q) {
beginShape();
for (int i=0; i<n; i++) {
qq = i*1.0/(n-1);
r = lerp(r1, r2, qq);
th = om*sin(TWO_PI*t - PI*qq + q);
vertex(r*cos(th), r*sin(th));
}
endShape();
}
int n = 60;
float r1 = 75, r2 = 255, r, th, om = .4;
float qq;
float x, y, z, tt;
int N = 12;
void draw_() {
blendMode(MULTIPLY);
background(250);
push();
translate(width/2, height/2);
for (int i=0; i<N; i++) {
push();
rotate(TWO_PI*i/N);
stroke(#FFDC00);
strand(0);
stroke(#39CCCC);
strand(TWO_PI/3);
stroke(#F012BE);
strand(-TWO_PI/3);
pop();
}
// MASKS !
push();
translate(0, 0, 1);
blendMode(NORMAL);
fill(250);
noStroke();
ellipse(0, 0, 2*r1+5, 2*r1+5);
beginShape(TRIANGLE_STRIP);
for (int i=0; i<=500; i++) {
vertex((r2-5)*cos(TWO_PI*i/500), (r2-5)*sin(TWO_PI*i/500));
vertex(1000*cos(TWO_PI*i/500), 1000*sin(TWO_PI*i/500));
}
endShape();
pop();
pop();
}
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