Author: yugyeonl@andrew.cmu.edu

sketch

//Yugyeong Lee
//Section B
//yugyeonl@andrew.cmu.edu
//Project-10

var stars = [];		//array of stars
var clouds = [];	//array of clouds
var landscapes = [];	//array of landscapes
var camera;

function preload() {
	//loading previously-made (through code) camera image
	var cameraImage = "https://i.imgur.com/5joEquu.png"
	camera = loadImage(cameraImage);
}

function setup() {
    createCanvas(480, 360);
    //create initial set of stars
    for (var i = 0; i < 100; i++) {
    	var starX = random(width);
    	var starY = random(3*height/4);
    	stars[i] = makeStars(starX, starY);
    }
    //create initial set of clouds
    for (var i = 0; i < 4; i++) {
    	var cloudX = random(width);
    	var cloudY = random(height/2);
    	clouds[i] = makeClouds(cloudX, cloudY);
    }
    //create mountain
    makeLandscape(height-100, 120, 0.0001, .0075, color(20));
    //create ocean
    makeLandscape(height-50, 20, 0.0001, .0005, color(42, 39, 50));
}

function draw() {
	//gradient background
    var from = color(24, 12, 34);
	var to = color(220, 130, 142);
    setGradient(0, width, from, to);
    //stars
	updateAndDisplayStars();
	removeStars();
	addStars();
	//moon
	makeMoon();
    //clouds
	updateAndDisplayClouds();
	removeClouds();
	addClouds();
	//landscape
	moveLandscape();
    //reflection of moon on ocean
    ellipseMode(CENTER);
    fill(243, 229, 202, 90);
    ellipse(3*width/4, height-50, random(50, 55), 4);
    ellipse(3*width/4, height-35, random(35, 40), 4);
    ellipse(3*width/4, height-26, random(25, 30), 4);
    ellipse(3*width/4, height-17, random(10, 15), 4);
    ellipse(3*width/4, height-8, random(35, 40), 5);
	fill(204, 178, 153, 50);
    ellipse(3*width/4, height-50, random(70, 80), 8);
    ellipse(3*width/4, height-35, random(50, 60), 8);
    ellipse(3*width/4, height-26, random(70, 80), 8);
    ellipse(3*width/4, height-17, random(30, 40), 8);
    ellipse(3*width/4, height-8, random(60, 70), 10);
	//camera LCD display
	push();
	translate(65, 153);
	scale(.475, .46);
	var from = color(24, 12, 34);
	var to = color(220, 130, 142);
    setGradient(0, width, from, to);
    //stars
	updateAndDisplayStars();
	removeStars();
	addStars();
	//moon
	makeMoon();
    //clouds
	updateAndDisplayClouds();
	removeClouds();
	addClouds();
	//landscape
	moveLandscape();
    //reflection
    ellipseMode(CENTER);
    fill(243, 229, 202, 90);
    ellipse(3*width/4, height-35, random(50, 55), 6);
    ellipse(3*width/4, height-28, random(35, 40), 4);
    ellipse(3*width/4, height-19, random(25, 30), 4);
    ellipse(3*width/4, height-10, random(10, 15), 4);
	fill(204, 178, 153, 50);
    ellipse(3*width/4, height-35, random(70, 80), 8);
    ellipse(3*width/4, height-28, random(50, 60), 8);
    ellipse(3*width/4, height-19, random(70, 80), 8);
    ellipse(3*width/4, height-10, random(30, 40), 8);
	pop();
	//camera
	image(camera, 0, 0);
	//camera crosshair
	noFill();
	strokeWeight(.25);
	stroke(235, 150);
	rect(75, 163, 200, 140);
	rect(85, 173, 180, 120);
	line(170, 233, 180, 233);
	line(175, 228, 175, 238);
	//battery symbol
	strokeWeight(.5);
	rect(94, 279, 18.25, 6);
	noStroke();
	fill(235, 150);
	for (i = 0; i< 4; i++) {
		rect(95+i*4.25, 280, 4, 4);
	}
	rect(112.25, 280, 2, 3);
	//REC text
	fill(235);
	textSize(7);
	text("REC", 245, 184);
	fill(225, 100, 0);
	ellipse(238, 182, 7, 7);
	//camera tripod
	fill(30);
	rect(width/2-50, height-26, 100, 20);
	fill(25);
	rect(width/2-75, height-16, 150, 50, 10);
}

function setGradient (y, w, from, to) {
	// top to bottom gradient (background)
    for (var i = y; i <= height; i++) {
      var inter = map(i, y, y+w, 0, 1);
      var c = lerpColor(from, to, inter);
      stroke(c);
      strokeWeight(2);
      line(y, i, y+w, i);
	}
}

function makeMoon() {
	ellipseMode(CENTER);
	for (var i = 0; i < 30; i++) {
		//glowing gradient moonlight through array & randomizing value
		var value = random(7, 8);
		var transparency = 50-value*i;
		var diam = 80;
		fill(243, 229, 202, transparency);
		ellipse(3*width/4, 90, diam+10*i, diam+10*i);
	}
	//the moon
	fill(204, 178, 153);
	ellipse(3*width/4, 90, diam, diam);
}

function makeLandscape(landscapeY, landscapeR, landscapeS, landscapeD, landscapeC) {
	var landscape = {ly: landscapeY,		//locationY
					 range: landscapeR,		//range of how far landscape goes up
					 speed: landscapeS,		//speed of the landscape
					 detail: landscapeD,	//detail (how round/sharp)
					 color: landscapeC,		//color of the landscape
					 draw: drawLandscape}
	landscapes.push(landscape);
}

function drawLandscape() {
	//generating landscape from code provided
	fill(this.color);
	beginShape();
	vertex(0, height);
	for (var i = 0; i < width; i++) {
		var t = (i*this.detail) + (millis()*this.speed);
        var y = map(noise(t), 0,1, this.ly-this.range/2, this.ly+this.range/2);
        vertex(i, y); 
	}
	vertex(width, height);
	endShape(CLOSE);
}

function moveLandscape() {
	//move the landscape
	for (var i = 0; i < landscapes.length; i++) landscapes[i].draw();
}

function updateAndDisplayStars() {
	//update the stars' position & draw them
	for (var i = 0; i < stars.length; i++) {
		stars[i].move();
		stars[i].draw();
	}
}

function makeStars(starX, starY) {
	var star = {x: starX,					//locationX of star
				y: starY,					//locationY of star
				speed: -random(0, .005),	//speed of the star
				move: moveStars,			
				draw: drawStars}
	return star;
}

function drawStars() {
	noStroke();
	//setting transparency at random to have twinkling effect
	var transparency = random(50, 200);
	fill(255, transparency);
	ellipse(this.x, this.y, 1.25, 1.25);
}

function moveStars() {
	//move stars by updating its x position
	this.x += this.speed;
}

function removeStars() {
	var keepStars = []; //array of stars to keep
	for (var i = 0; i < stars.length; i++) {
		if (0 < stars[i].x < width) {
			keepStars.push(stars[i]);
		}
	}
	stars = keepStars;	//remember the surviving stars
}

function addStars() {
	//new stars from the right edge of the canvas
	var newStarsProbability = 0.0025;
	//likliness of new stars
	if (random(0, 1) < newStarsProbability) {
    	var starX = width;
    	var starY = random(3*height/4);
		stars.push(makeStars(starX, starY));
	}
}
//clouds
function updateAndDisplayClouds() {
	//update the clouds' position & draw them
	for (var i = 0; i < clouds.length; i++) {
		clouds[i].move();
		clouds[i].draw();
	}
}

function makeClouds(cloudX, cloudY) {
	var cloud = {x: cloudX,					//locationX of cloud
				y: cloudY,					//locationY of the cloud
				breadth: random(200, 300),	//width of the cloud
				speedC: -random(.3, .5),	//speed of the cloud
				nFloors: round(random(2,6)),//multiplier that determines the height of the cloud
				transparency: random(20, 60),//transparency of the cloud
				move: moveClouds,
				draw: drawClouds}
	return cloud;
}

function drawClouds() {
	var multiplier = 5;	//multiplier that determines the height of the cloud
	var cloudHeight = this.nFloors*multiplier;
	ellipseMode(CORNER);
	noStroke();
	fill(255, this.transparency);
	push();
	translate(this.x, height/2-80);
	ellipse(0, -cloudHeight, this.breadth, cloudHeight/2);
	pop();
	push();
	translate(this.x, height/2-100);
	ellipse(30, -cloudHeight, this.breadth, cloudHeight);
	pop();
}

function moveClouds() {
	//move stars by updating its x position
	this.x += this.speedC;
}

function removeClouds() {
	var keepClouds = [];	//array of clouds to keep
	for (var i = 0; i < clouds.length; i++) {
		if (clouds[i].x + clouds[i].breadth > 0) {
			keepClouds.push(clouds[i]);
		}
	}
	clouds = keepClouds;	//remember the surviving clouds
}

function addClouds() {
	//new clouds from the right edge of the canvas
	var newCloudsProbability = 0.005;
	//likliness of new clouds
	if (random(0, 1) < newCloudsProbability) {
    	var cloudX = width;
    	var cloudY = random(height/2);
		clouds.push(makeClouds(cloudX, cloudY));
	}
}

I first visualized the generative landscape through the lens of a camera. As if to record the moving landscape on the background, the LCD display shows the night sky with twinkling stars as well as clouds, mountains, and flowing body of water. I created the camera through code but in realizing that I cannot make a transparent LCD display, I took a screenshot of the camera I generated and created a transparent layer in Photoshop and included it in my code as an image. I focused on creating depth with this generative landscape project through different layers and wanted to make sure that even the objects with subtle movement such as the moon and the stars have movement through having blinking and glowing effect.