久しぶりにProcessingを触ってみたところ、けっこうな自信作ができてしまったので記事にしてしまいます。
解説は記事を分けて複数回に分けて書くことにします。記事の最後にリンクを貼ってあるので、興味のある方はそちらもぜひ見ていってください。
ちなみに元動画はファイルが大きすぎてワードプレスには乗らなかったので、ツイートを載せる形にします。
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Spiral[] spirals; Spiral spiral; int counter; int num = 3; int totalFrames = 240; boolean record = false;//true; void setup() { colorMode(HSB, 360, 100, 100, 100); size(900, 600); background(0, 0, 100); strokeWeight(0.5); smooth(); counter = 0; spiral = new Spiral(); spirals = new Spiral[num]; for (int i=0; i < num; i++) { spirals[i] = new Spiral(); } } void draw() { background(100, 0, 0); float percent = 0; if (record) { percent = float(counter) / totalFrames; } else { percent = float(counter % totalFrames) /totalFrames; } render(percent); counter ++; if (record) { saveFrame("output/gif-"+nf(counter, 3)+".png"); if (counter == totalFrames -1) { exit(); } } } void render(float percent) { float a = percent*TWO_PI; spiral.render(a); for (int i=0; i < num; i++) { spirals[i].render(a); } } class NoiseLoop{ float diameter; float min, max; float cx; float cy; NoiseLoop(float diameter, float min, float max){ this.diameter = diameter; this.min = min; this.max = max; cx = random(1000); cy = random(1000); } float value(float a,float b, float speed){ float xoff = map(cos(a), -1, 1, 0, diameter) + cx; float yoff = map(sin(a), -1, 1, 0, diameter) + cy; float zoff = b*speed; float r = noise(xoff, yoff,zoff); return map(r, 0, 1, min, max); } } class Particle { int centx; int centy; float r; float a; float nx; float ny; float nr; float h; int col; int alpha; Particle(float radius, float ang, float cx, float cy) { centx = width/2 + int(cx); centy = height/2 + int(cy); r = radius; a = ang; } void render() { nx = centx + nr*cos(a); ny = centy + nr*sin(a); //circle(nx, ny, 10); } } class Spiral { float radius = 0; int N = 4; int num = 1500; int range = 150; float startAngle; float speed; float entropy; float cx, cy; Particle[] particles; NoiseLoop Noise; NoiseLoop colNoise; NoiseLoop alphaNoise; Spiral() { startAngle = random(360); particles= new Particle[num]; speed = random(2)*0.3 + 0.5; entropy = random(1)+0.5; cx = random(100)-50; cy = random(100)-50; Noise = new NoiseLoop(speed*0.3, -range*4, range); colNoise = new NoiseLoop(speed, 0, 720); alphaNoise = new NoiseLoop(speed*0.5, -255, 255); for (int i =0; i < particles.length; i++) { float ang = i*N*TWO_PI/particles.length + radians(startAngle); // float thisRadius = radius; particles[i] = new Particle(thisRadius, ang, cx, cy); radius += 0.1; } } void render(float counter) { float t = counter;// * 0.01; for (int i =0; i < particles.length; i++) { float ang = i*N*TWO_PI/particles.length; float noise = Noise.value(t, i*TWO_PI/num*1.5, entropy); float thisNoise = noise *(1+ang/(num*TWO_PI)*50); int col = int(colNoise.value(t, i*TWO_PI/num, entropy)); float alpha = abs(alphaNoise.value(t, i*TWO_PI/num, 0.3))/2; particles[i].nr = particles[i].r + thisNoise; //particles[i].h = (map(noise,-range*4, range,0,510))%255; particles[i].col = col; particles[i].alpha = int(alpha); //int(map(noise, -range*4*(1+ang/(num*TWO_PI)*50), range*(1+ang/(num*TWO_PI)*50), 0, 360)); } for (int i =0; i < particles.length; i++) { particles[i].render(); } for (int i = 1; i < particles.length; i++) { line(particles[i].nx, particles[i].ny, particles[i-1].nx, particles[i-1].ny); if (i == particles.length) { noStroke(); } int alpha = int(particles[i].alpha); stroke(particles[i].col, 100, 100, alpha); strokeWeight(2.5); } } } |
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おしまい。
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