var boolDoRefresh;

let width = 640;

let color = 20;

let alpha = 5;

​

function setup() {

  createCanvas(width, width);

  boolDoRefresh = true;

}

​

function draw() {

  if (boolDoRefresh) {

    background(200,200,0);

    //base forest

    for (i=0; i<width; i+=10) {

      drawTrees(random(0,640), i, 450, color, alpha);

      drawTrees(random(0,640), i, 100, color+150, alpha);

  }

    //top forest

    for (i=0;i<width;i+=40) {

      drawCircles(i,random(0,640), random(200), color, alpha);

    }

    boolDoRefresh = false;

}

}

​

function drawCircles(x,y,d, color, alpha) {

  noStroke();

  fill(color+255,color+(random(255)),color,alpha);

  ellipse(x,y,d);

  if (d>10) {

    drawCircles(x, y+d*.05, d*.5, color, alpha+5);

    drawCircles(x, y-d*.05, d*.5, color, alpha+5);

    //drawCircles(x-d*0.5, y-5, d*.5, color, alpha);

    }

  }

​

function drawTrees(x,y,d, color, alpha) {

  noStroke();

  fill(color,color+20,color,alpha);

  ellipse(x,y,d);

  if (d>2) {

    drawTrees(x+ d*0.5, y, d*.5, color, alpha+5);

    drawTrees(x- d*0.5, y, d*.5, color, alpha+5);

    drawCircles(x- d*0.5, y, d*.5, color-255, alpha+5);

    }

  }

​

function drawRoad() {

  stroke(0,0,0,80);

  strokeWeight(10);

  noFill();

  //line(random(5,10), random(5,10), random(300,600), random(300, 600));

  let x = mouseX;

  let y = mouseY;

  bezier(0,100,250,150,x+random(-10,10),y+random(-10,10),600,700);

  translate(x,y);

  bezier(300,600,20,90,x,y,600,10);

​

}

​

function drawRect() {

  noFill();

  stroke(255);

  strokeWeight(1);

  rect(random(540), random(640), random(50,100), random(50,100));

​

}

​

​

​

function mousePressed() {

  boolDoRefresh = true;

}