Created
July 3, 2018 21:38
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wavers
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// 'wavers' by dave | |
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 = 320; | |
float shutterAngle = .7; | |
boolean recording = false; | |
void setup() { | |
size(720, 720, P3D); | |
pixelDensity(recording ? 1 : 2); | |
smooth(8); | |
result = new int[width*height][3]; | |
rectMode(CENTER); | |
stroke(32); | |
noFill(); | |
strokeWeight(3); | |
} | |
float x, y, z, tt; | |
float x_, y_, z_; | |
int N = 8; | |
int n = 720; | |
float th, rot, rotMax = PI*.75, twist = PI/3; | |
float briteness; | |
float rMin = 65, rMax = 200; | |
void circ(float r, float phase, boolean black) { | |
strokeWeight(black ? 6 : 18); | |
beginShape(); | |
for (int i=0; i<n; i++) { | |
th = TWO_PI*i/n; | |
x = r*cos(th); | |
y = r*sin(th); | |
rot = rotMax*sin(TWO_PI*t + phase - twist*y/r); | |
briteness = c01(map(x*sin(rot), -rMax, rMax, 0, 1)); | |
briteness = lerp(220, 20, briteness); | |
stroke(black ? briteness : 250); | |
vertex(x*cos(rot), y, x*sin(rot)); | |
} | |
endShape(CLOSE); | |
} | |
void circs() { | |
for (int i=0; i<N; i++) { | |
circ(map(i,0,N-1,rMin,rMax), -HALF_PI*i/N, true); | |
push(); | |
translate(0, 0, -9); | |
circ(map(i,0,N-1,rMin,rMax), -HALF_PI*i/N, false); | |
pop(); | |
} | |
} | |
void draw_() { | |
background(250); | |
push(); | |
translate(width/2, height/2); | |
circs(); | |
pop(); | |
} |
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