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function setup() { createCanvas(400, 400);}//// version 1// const arrayX = [];// const arrayY = [];// var lastX = -1;// var lastY = -1;// function draw() {// background(255, 200, 200);// if ((lastX != mouseX) || (lastY != mouseY)) {// arrayX.push(mouseX);// arrayY.push(mouseY);// }// lastX = mouseX;// lastY = mouseY;// if (arrayX.length > 100) {// arrayX.shift();// arrayY.shift();// }// for (var i = 0; i < arrayX.length - 1; i++) {// line(arrayX[i], arrayY[i], arrayX[i+1], arrayY[i+1]);// }// }//// version 2// const array = [];// var lastX = -1;// var lastY = -1;// function draw() {// background(255, 200, 200);// if ((lastX != mouseX) || (lastY != mouseY)) {// array.push([mouseX, mouseY]);// }// lastX = mouseX;// lastY = mouseY;// if (array.length > 100) {// array.shift();// }// for (var i = 0; i < array.length - 1; i++) {// line(array[i][0], array[i][1], array[i+1][0], array[i+1][1]);// }// }//// verison 3// const array = [];// var lastP = {// x : -1,// y : -1// };// function draw() {// background(255, 200, 200);// const p = {// x : mouseX,// y : mouseY// };// if (lastP != p) {// array.push(p);// }// lastP = p;// if (array.length > 100) {// array.shift();// }// for (var i = 0; i < array.length - 1; i++) {// line(array[i].x, array[i].y, array[i+1].x, array[i+1].y);// }// }