“sfc181219_05” by Atsushi Tadokoro
https://openprocessing.org/sketch/646268
License CreativeCommons Attribution ShareAlike
https://creativecommons.org/licenses/by-sa/3.0
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sfc181219_05
Tadokoro
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//リストの長さの最大値
let LENGTH = 200;
//マウスの位置を記録するためのリスト
let mouseLocs = [];
function setup() {
createCanvas(windowWidth, windowHeight);
frameRate(60);
background(0);
//リストを初期化
for (let i = 0; i < LENGTH; i++) {
//画面の中心に配置
let loc = createVector(width / 2, height / 2);
mouseLocs.push(loc);
}
}
function draw() {
//画面基本設定
background(0);
noFill();
stroke(255);
//現在のマウスの位置をリストに追加
let loc = createVector(mouseX, mouseY);
mouseLocs.push(loc);
//先頭の要素を削除
mouseLocs.splice(1, 1);
//一定間隔でリストに記録したマウスの位置を取り出して描画
for (let i = 0; i < mouseLocs.length; i += 10) {
//円を描く
ellipse(mouseLocs[i].x, mouseLocs[i].y, i, i);
}
}
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