рони, работает заливка, теперь я изменила цикл и увеличила до 12, чтобы все плоскости куба отображались, также я вернула tweenmax для перемещения по холсту. Как теперь остальным граням присвоить другие цвета? т.е. задняя плоскость не видна, остается еще четыре top, left,right и bottom, которые постепенно отображаются в зависимости перемещения объекта.
<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
<title>Tween</title>
<script src='https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js'></script>
<script src='https://cdnjs.cloudflare.com/ajax/libs/gsap/1.14.2/TweenMax.min.js'></script>
<style>
body {
margin: 0;
overflow: hidden;
}
canvas {
width:100vw;
height:100vh;
}
</style>
</head>
<body>
<canvas id="scene"></canvas>
<script>
console.clear();
// Get the canvas element from the DOM
const canvas = document.querySelector('#scene');
canvas.width = canvas.clientWidth;
canvas.height = canvas.clientHeight;
// Store the 2D context
const ctx = canvas.getContext('2d');
if (window.devicePixelRatio > 1) {
canvas.width = canvas.clientWidth * 2;
canvas.height = canvas.clientHeight * 2;
ctx.scale(2, 2);
}
/* ====================== */
/* ====== VARIABLES ===== */
/* ====================== */
let width = canvas.clientWidth; // Width of the canvas
let height = canvas.clientHeight; // Height of the canvas
const dots = []; // Every dots in an array
/* ====================== */
/* ====== CONSTANTS ===== */
/* ====================== */
/* Some of those constants may change if the user resizes their screen but I still strongly believe they belong to the Constants part of the variables */
const DOTS_AMOUNT = 1000; // Amount of dots on the screen
const DOT_RADIUS = 2; // Radius of the dots
let PROJECTION_CENTER_X = width / 2; // X center of the canvas HTML
let PROJECTION_CENTER_Y = height / 2; // Y center of the canvas HTML
let FIELD_OF_VIEW = width * 0.8;
const CUBE_LINES = [[0, 1], [1, 3], [3, 2], [2, 0], [2, 6], [3, 7], [0, 4], [1, 5], [6, 7], [6, 4], [7, 5], [4, 5]];
const CUBE_VERTICES = [[-1, -1, -1],[1, -1, -1],[-1, 1, -1],[1, 1, -1],[-1, -1, 1],[1, -1, 1],[-1, 1, 1],[1, 1, 1]];
var test1 = [[-1, -1, -1],[1, -1, -1],[-1, 1, -1],[1, 1, -1],[-1, -1, 1],[1, -1, 1],[-1, 1, 1],[1, 1, 1]];
var xPos = 140;
var yPos = 50;
//{x:20,y:10,x:20,y:10,x:33,y:11,x:22,y:44,x:22,y:55,x:100,y:200};
class Cube {
constructor(x, y, z) {
this.x = (Math.random() - 0.5) * width;
this.y = (Math.random() - 0.5) * width;
this.z = (Math.random() - 0.5) * width;
this.radius = Math.floor(Math.random() * 12 + 10);
TweenMax.to(this, Math.random() * 20 + 15, {
x: (Math.random() - 0.5) * (width * 0.5),
y: (Math.random() - 0.5) * (width * 0.5),
z: (Math.random() - 0.5) * width,
repeat: -1,
yoyo: true,
ease: Power2.EaseOut,
delay: Math.random() * -35
});
}
// Do some math to project the 3D position into the 2D canvas
project(x, y, z) {
const sizeProjection = FIELD_OF_VIEW / (FIELD_OF_VIEW + z);
const xProject = (x * sizeProjection) + PROJECTION_CENTER_X;
const yProject = (y * sizeProjection) + PROJECTION_CENTER_Y;
return {
size: sizeProjection,
x: xProject,
y: yProject
}
}
// Draw the dot on the canvas
draw() {
// Do not render a cube that is in front of the camera
if (this.z < -FIELD_OF_VIEW + this.radius) {
return;
}
//CUBE_LINES.length
for (let i = 0; i < 12; i++) {
const v1 = {
x: this.x + (this.radius * CUBE_VERTICES[CUBE_LINES[i][0]][0]),
y: this.y + (this.radius * CUBE_VERTICES[CUBE_LINES[i][0]][1]),
z: this.z + (this.radius * CUBE_VERTICES[CUBE_LINES[i][0]][2])
};
const v2 = {
x: this.x + (this.radius * CUBE_VERTICES[CUBE_LINES[i][1]][0]),
y: this.y + (this.radius * CUBE_VERTICES[CUBE_LINES[i][1]][1]),
z: this.z + (this.radius * CUBE_VERTICES[CUBE_LINES[i][1]][2])
};
const v1Project = this.project(v1.x, v1.y, v1.z);
const v2Project = this.project(v2.x, v2.y, v2.z);
// ctx.beginPath();
// ctx.lineWidth = 2;
// ctx.moveTo(v1Project.x, v1Project.y);
//ctx.lineTo(v2Project.x, v2Project.y);
// ctx.fillStyle = "#cc6666";
//console.log(test1[i][1][0]);
// ctx.stroke();
// ctx.fill();
// console.log(CUBE_LINES.length);
// console.log(test1.x);
// ctx.save();
// ctx.lineWidth = 2;
// ctx.fillStyle = ctx.strokeStyle = "#cc6666";
// ctx.beginPath();
/// ctx.moveTo(v1Project.x, v1Project.y);
// ctx.lineTo(v2Project.x, v2Project.y);
//ctx.closePath();
// ctx.stroke();
// ctx.fill();
// ctx.restore();
ctx.beginPath();
ctx.fillStyle = ctx.strokeStyle = "#6666cc";
//utils.colorToRGB(this.color, this.alpha);
//*************************************
//Не работает заливка
//*************************************
ctx.moveTo(v1Project.x,v1Project.y);
ctx.lineTo(v2Project.x,v2Project.y);
if(!i) {
let h = -(v1Project.x - v2Project.x);
ctx.fillRect(v1Project.x,v1Project.y, h, h)
}
ctx.stroke();
}
// ctx.globalAlpha = Math.abs(this.z / (width * 0.5));
}
}
function createDots() {
// Empty the array of dots
dots.length = 0;
// Create a new dot based on the amount needed
for (let i = 0; i < 100; i++) {
dots.push(new Cube());
}
}
/* ====================== */
/* ======== RENDER ====== */
/* ====================== */
function render() {
// Clear the scene
ctx.clearRect(0, 0, width, height);
// Loop through the dots array and draw every dot
for (var i = 0; i < dots.length; i++) {
dots[i].draw();
}
window.requestAnimationFrame(render);
}
// Function called after the user resized its screen
function afterResize () {
width = canvas.offsetWidth;
height = canvas.offsetHeight;
if (window.devicePixelRatio > 1) {
canvas.width = canvas.clientWidth * 2;
canvas.height = canvas.clientHeight * 2;
ctx.scale(2, 2);
} else {
canvas.width = width;
canvas.height = height;
}
PROJECTION_CENTER_X = width / 2;
PROJECTION_CENTER_Y = height / 2;
FIELD_OF_VIEW = width * 0.8;
createDots(); // Reset all dots
}
// Variable used to store a timeout when user resized its screen
let resizeTimeout;
// Function called right after user resized its screen
function onResize () {
// Clear the timeout variable
resizeTimeout = window.clearTimeout(resizeTimeout);
// Store a new timeout to avoid calling afterResize for every resize event
resizeTimeout = window.setTimeout(afterResize, 500);
}
window.addEventListener('resize', onResize);
// Populate the dots array with random dots
createDots();
// Render the scene
window.requestAnimationFrame(render);
</script>
</body>
</html>