Vector Transformations 1

by sirfizx

CSS

body
{
background-image:url('http://4.bp.blogspot.com/-EatAgzrwxrE/T4fb7BZEj7I/AAAAAAAADX8/ha3rPKTJxYc/s640/sloth-green-woods-forest.png');
background-color:#cccccc;
}

JavaScript

// this function is executed on each animation frame
function animate() {
    // update
    updateCamera(clock.getDelta());

    // render
    renderer.render(scene, camera);

    // request new frame
    requestAnimationFrame(function () {
        animate();
    });
}
// renderer
var renderer = new THREE.CanvasRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
document.body.appendChild(renderer.domElement);

// scene
var scene = new THREE.Scene();

// camera
var camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 1, 9000);
camera.position.set(0, 10, 800);
camera.lookAt(scene.position);

// clock
var clock = new THREE.Clock();

// update camera function
var turnRight=turnLeft=goForward=goBackward=false;
var camRotVel=-0.5;
var camLinVel=-48;
function updateCamera(delta){
    if(turnRight){
        camera.rotation.y+=camRotVel*delta;
    }
    if(turnLeft){
        camera.rotation.y-=camRotVel*delta;
    }
    if(goForward){
        camera.translateZ(camLinVel*delta);
    }
    if(goBackward){
        camera.translateZ(-1*camLinVel*delta);
    }
}

// key mapping
document.onkeydown = function(e){
    //alert(e.keyCode);
    switch(e.keyCode){
        case 87: goForward=true;
            break;
        case 83: goBackward=true;
            break;
        case 65: turnLeft=true;
            break;
        case 68: turnRight=true;
    }
}
document.onkeyup = function(e){
    //alert(e.keyCode);
    switch(e.keyCode){
        case 87: goForward=false;
                break;
        case 83: goBackward=false;
                break;
        case 65: turnLeft=false;
                break;
        case 68: turnRight=false;
    }
}

// material
var material = new THREE.MeshLambertMaterial({
    map: THREE.ImageUtils.loadTexture('http://i223.photobucket.com/albums/dd176/dyslixec/wood_crate_base_made_from_tutorial.jpg'),
    overdraw: true
});

// cube
var cube = new THREE.Mesh(new THREE.CubeGeometry(80, 80, 80, 4, 4, 4),...