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sine shine
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));
float c01(float g) {
return constrain(g, 0, 1);
}
void draw() {
if (recording) {
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###.png");
if (frameCount==numFrames)
exit();
} else if (preview) {
c = mouseY*1.0/height;
if (mousePressed)
println(c);
t = (millis()/(20.0*numFrames))%1;
draw_();
} else {
t = mouseX*1.0/width;
c = mouseY*1.0/height;
if (mousePressed)
println(c);
draw_();
}
}
//////////////////////////////////////////////////////////////////////////////
int samplesPerFrame = 4;
int numFrames = 240;
float shutterAngle = .5;
boolean recording = false,
preview = true;
void setup() {
size(750, 750, P3D);
smooth(8);
rectMode(CENTER);
pixelDensity(recording ? 1 : 2);
result = new int[width*height][3];
noFill();
blendMode(SCREEN);
}
float x, y, z, tt;
int N = 720;
float l = 360;
float sw;
float qq;
color[] cs = {#ff0000, #00ff00, #0000ff};
void draw_() {
background(10);
push();
translate(width/2, height/2);
for (int q=0; q<3; q++) {
stroke(cs[q]);
for (int a=0; a<24; a++) {
beginShape();
for (int i=0; i<N; i++) {
qq = i/float(N-1);
x = lerp(-l/2, l/2, qq);
y = l/2*sin(PI*qq - TWO_PI*t/3 + TWO_PI*a/24);
sw = map(cos(-TWO_PI*t/3 + TWO_PI*t + TWO_PI*a/24 + PI/4*q), 1, -1, 0, 1);
strokeWeight(lerp(0, 8, sq(sw)));
vertex(x, y);
}
endShape();
}
}
pop();
}
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