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Processing勉強会の課題「分岐」
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int numberOfWalker = 30; Walker[] walkers = new Walker[numberOfWalker]; void setup(){ size(720, 720); frameRate(60); stroke(39); strokeWeight(2); for(int i = 0; i < numberOfWalker; i++){ walkers[i] = new Walker(); } } void draw(){ background(239); for(int i = 0; i < numberOfWalker; i++){ walkers[i].update(); walkers[i].display(); } } |
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class Walker{ PVector location; PVector direction; //PVector log; ArrayList<PVector> log; Walker(){ int x = ((int)random(0, width) / 30) * 30; int y = ((int)random(0, height) / 30) * 30; this.location = new PVector(x, y); log = new ArrayList<PVector>(); } void update(){ if(frameCount % 10 == 1){ int r = (int)random(0, 4); switch(r){ case 0: this.direction = new PVector(10, 0); break; case 1: this.direction = new PVector(-10, 0); break; case 2: this.direction = new PVector(0, 10); break; case 3: this.direction = new PVector(0, -10); break; } } this.location.add(this.direction); if(this.location.x < 0){ this.location.x = width; }else if(this.location.x > width){ this.location.x = 0; } if(this.location.y < 0){ this.location.y = height; }else if(this.location.y > height){ this.location.y = 0; } this.log.add(this.location.copy()); if(log.size() > 10){ this.log.remove(0); } } void display(){ for(int i = 1;i < this.log.size(); i++){ line(this.log.get(i - 1).x, this.log.get(i - 1).y, this.log.get(i).x, this.log.get(i).y); } } } |