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@rossgoodwin
Forked from beesandbombs/encroachment.pde
Created May 22, 2018 22:44
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encroachment
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 = 360;
float shutterAngle = 1;
boolean recording = false;
void setup() {
size(720, 720, P3D);
pixelDensity(recording ? 1 : 2);
smooth(8);
result = new int[width*height][3];
rectMode(CENTER);
fill(32);
noStroke();
ortho();
}
float x, y, z, tt, t1;
int N = 12;
color c1 = #282828, c2 = #006f3c, c3 = #e177a8;
float l, r;
float eas = 4;
void cube() {
for (int i=0; i<4; i++) {
push();
fill(i%2 == 0?c1:c2);
rotateY(HALF_PI*i);
translate(0, 0, l/2);
rect(0, 0, l, l);
pop();
}
for (int i=0; i<2; i++) {
push();
fill(c3);
rotateX(HALF_PI+PI*i);
translate(0, 0, l/2);
rect(0, 0, l, l);
pop();
}
}
void shard() {
beginShape();
vertex(0, -r);
vertex(0, -2*r);
vertex(2*r*mn, -r);
vertex(r*mn, -r/2);
endShape();
}
void draw_() {
t1 = c01(1.1*t);
tt = c01(1.25*t-0.25);
l = 180*pow(2,-t);
r = l*.815; // trial & error
background(250);
push();
translate(width/2, height/2);
push();
rotateX(-ia);
rotateY(QUARTER_PI);
rotateX(-HALF_PI*ease(c01(4*t1-3),eas));
rotate(-HALF_PI*ease(c01(4*t1-2),eas));
rotateX(-HALF_PI*ease(c01(4*t1-1),eas));
rotateY(-HALF_PI*ease(c01(4*t1),eas));
cube();
pop();
for (int i=0; i<6; i++) {
fill(c1);
if(i>1)
fill(c2);
if(i>3)
fill(c3);
push();
rotate(TWO_PI*(i+1)/6);
translate(0,-600 + 600*(1-sq(1-tt)));
shard();
pop();
}
pop();
}
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