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@beesandbombs
Created September 14, 2017 17:55
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two squares / four triangles
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("f###.gif");
if (frameCount==numFrames)
exit();
}
}
//////////////////////////////////////////////////////////////////////////////
int samplesPerFrame = 4;
int numFrames = 280;
float shutterAngle = .6;
boolean recording = false;
void setup() {
size(800,800,P3D);
smooth(8);
pixelDensity(recording ? 1 : 2);
result = new int[width*height][3];
blendMode(EXCLUSION);
fill(255);
noStroke();
}
float l = 320;
float t1, t2;
void tri(){
triangle(-l/2,0,l/2,0,0,-l/2);
}
void thing1(){
push();
scale(pow(2,.5-.5*t1));
push();
rotate(-QUARTER_PI*t1);
push();
translate(0,-l/2*t1);
tri();
pop();
push();
rotate(PI);
translate(0,-l/2*t1);
tri();
pop();
pop();
pop();
}
void thing2(){
push();
rotate(QUARTER_PI);
push();
translate(0,-l/2*t2);
tri();
pop();
push();
rotate(PI);
translate(0,-l/2*t2);
tri();
pop();
pop();
}
void draw_() {
t1 = ease(constrain(map(t,.125,.475,0,1),0,1),4.5);
t2 = ease(constrain(map(t,.525,.875,0,1),0,1),5.5);
background(0);
push();
translate(width/2, height/2);
scale(-1,1);
rotate(QUARTER_PI-QUARTER_PI*t);
scale(pow(sqrt(2),-t));
thing1();
thing2();
pop();
}
@shaunlebron
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