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/swimmer.pde

Created Oct 5, 2016
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swimmer
// by david whyte >:)
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);
void setup() {
setup_();
result = new int[width*height][3];
}
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("dr###.gif");
if (frameCount==numFrames)
exit();
}
}
//////////////////////////////////////////////////////////////////////////////
int samplesPerFrame = 8;
int numFrames = 70;
float shutterAngle = .5;
boolean recording = true;
void setup_() {
size(800, 600);
rectMode(CENTER);
fill(32);
noStroke();
}
float x, y, x_, y_, tt;
float d = 16, sp = 30;
float th;
float r = 15;
void draw_() {
background(250);
pushMatrix();
translate(width/2, height/2);
rotate(QUARTER_PI);
scale(1.0);
background(20);
fill(250);
noStroke();
for (int i=0; i<8; i++) {
for (int j=0; j<8; j++) {
x = (i-3.5)*sp;
y = (j-3.5)*sp;
x_ = x + r*cos(TWO_PI*t + PI - .011*y);
y_ = y + r*cos(TWO_PI*t + PI - .011*x);
pushMatrix();
ellipse(x_, y_, d, d);
popMatrix();
}
}
popMatrix();
}
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