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<!DOCTYPE html>
<html lang="en">
<head>
<title>Daniel Suo | Legos! In WebGL!</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<style>
body {
font-family: Courier;
background-color: #f0f0f0;
margin: 0px;
overflow: hidden;
}
#oldie { background-color: #ddd !important }
</style>
</head>
<body>
<script src="three.min.js"></script>
<script src="lego.js"></script>
<script src="OrbitControls.js"></script>
<script>
var container, stats;
var camera, scene, renderer;
var projector, plane;
var mouse2D, mouse3D, raycaster,
rollOveredFace, isShiftDown = false,
theta = 45 * 0.5, isCtrlDown = false;
var rotated = false;
var controls;
var addBrick = false;
var rollOverMesh, rollOverMaterial;
var voxelPosition = new THREE.Vector3(), tmpVec = new THREE.Vector3(), normalMatrix = new THREE.Matrix3();
var cubeGeo, cubeMaterial;
var i, intersector;
var colors;
var currColor = -1;
var width, height, depth, color;
var wOffset, dOffset;
init();
animate();
function init() {
colors = [0xff0000, 0x00ff00, 0x0000ff, 0xffff00, 0xff00ff, 0x00ffff];
container = document.createElement( 'div' );
document.body.appendChild( container );
var info = document.createElement( 'div' );
info.style.position = 'absolute';
info.style.top = '10px';
info.style.left = '10px';
info.style.width = '100%';
info.style.textAlign = 'left';
info.innerHTML = 'LEGO.js<br><strong>z</strong>: drop brick<br><strong>x</strong>: rotate brick<br><strong>w and d</strong>: increase brick width / depth<br><strong>a and s</strong>: decrease brick width / depth<br><strong>r</strong>: increase brick height<br><strong>f</strong>: decrease brick height<br><strong>c</strong>: change color<br><strong>control + click</strong>: delete brick<br><strong>click + drag</strong>: rotate<br><strong>wheel mouse</strong>: zoom';
container.appendChild( info );
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 10000 );
camera.position.y = 200;
camera.position.x = 200;
camera.position.z = 200;
scene = new THREE.Scene();
scene.add( new THREE.AxisHelper(1000) );
controls = new THREE.OrbitControls( camera );
controls.addEventListener( 'change', render );
controls.movementSpeed = 70;
controls.lookSpeed = 0.05;
controls.noFly = true;
controls.lookVertical = false;
// roll-over helpers
width = 2;
height = 1;
depth = 3;
color = getColor();
updateOffsets();
rollOverGeo = new THREE.CubeGeometry( 8, 8, 8 );
rollOverMaterial = new THREE.MeshBasicMaterial( { color: color, opacity: 0.5, transparent: true } );
var brick = new Brick(width, height, depth, color);
rollOverMesh = new THREE.Mesh( brick.geometry, rollOverMaterial );
scene.add( rollOverMesh );
// cubes
// cubeGeo = new THREE.Geometry();
// THREE.GeometryUtils.merge(cubeGeo, rollOverBrick.geometry);
// cubeMaterial = rollOverBrick.mesh.material;
cube = new Brick(width, height, depth, color);
// picking
projector = new THREE.Projector();
// grid
plane = new THREE.Mesh( new THREE.PlaneGeometry( 240, 240, 30, 30 ), new THREE.MeshBasicMaterial( { color: 0x555555, wireframe: true } ) );
var grid = new Brick(30, 1, 30, 0xaaaaaa, 1, 1);
plane = grid.mesh;
// plane.rotation.x = - Math.PI / 2;
scene.add( plane );
mouse2D = new THREE.Vector3( 0, 10000, 0.5 );
// Lights
var ambientLight = new THREE.AmbientLight( 0x606060 );
scene.add( ambientLight );
var directionalLight = new THREE.DirectionalLight( 0xffffff );
directionalLight.position.set( 1, 0.75, 0.5 ).normalize();
scene.add( directionalLight );
renderer = new THREE.WebGLRenderer( { antialias: true, preserveDrawingBuffer: true } );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
document.addEventListener( 'mousedown', onDocumentMouseDown, false );
document.addEventListener( 'keydown', onDocumentKeyDown, false );
document.addEventListener( 'keyup', onDocumentKeyUp, false );
// document.addEventListener( 'keypress',aaa onDocumentKeyPress, false);
//
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function getRealIntersector( intersects ) {
for( i = 0; i < intersects.length; i++ ) {
intersector = intersects[ i ];
if ( intersector.object != rollOverMesh ) {
return intersector;
}
}
return null;
}
function setVoxelPosition( intersector ) {
normalMatrix.getNormalMatrix( intersector.object.matrixWorld );
tmpVec.copy( intersector.face.normal );
tmpVec.applyMatrix3( normalMatrix ).normalize();
voxelPosition.addVectors( intersector.point, tmpVec );
voxelPosition.x = Math.floor( voxelPosition.x / LEGO.dim.pitch) * LEGO.dim.pitch + LEGO.dim.pitch / (!rotated ? wOffset : dOffset);// + 25;
voxelPosition.y = Math.floor( voxelPosition.y / LEGO.dim.brickHeight) * LEGO.dim.brickHeight + height * LEGO.dim.brickHeight / 2;// + 25;
voxelPosition.z = Math.floor( voxelPosition.z / LEGO.dim.pitch ) * LEGO.dim.pitch + LEGO.dim.pitch / (!rotated ? dOffset : wOffset);// + 25;
}
function onDocumentMouseMove( event ) {
event.preventDefault();
mouse2D.x = ( event.clientX / window.innerWidth ) * 2 - 1;
mouse2D.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
}
function onDocumentMouseDown( event ) {
event.preventDefault();
var intersects = getIntersects();
// if ( intersects.length > 0 ) {
if ( isCtrlDown ) {
if ( intersector.object != plane ) {
scene.remove( intersector.object );
}
// create cube
} else {
if (addBrick) {
dropBrick(intersects);
}
}
// }
}
function rotateY(angle) {
var axis = new THREE.Vector3(0, 1, 0);
return(new THREE.Matrix4().makeRotationAxis(axis, angle));
}
function getIntersects() {
var intersects = raycaster.intersectObjects( scene.children );
return intersects;
}
function dropBrick(intersects) {
intersector = getRealIntersector( intersects );
setVoxelPosition( intersector );
var voxelCube = new Brick(width, height, depth, color);
var voxel = new THREE.Mesh(voxelCube.mesh.geometry, voxelCube.mesh.material);
console.log(voxel);
voxel.rotation.y = rollOverMesh.rotation.y;
voxel.position.copy( voxelPosition );
// voxel.matrixAutoUpdate = false;
// voxel.updateMatrix();
scene.add( voxel );
}
function onDocumentKeyDown( event ) {
switch( event.keyCode ) {
case 16: isShiftDown = true; break;
case 17: isCtrlDown = true; break;
case 18: addBrick = true; break;
case 88: // x
rotateMesh();
rotated = !rotated;
break;
case 87: // w
width = width + 1;
//rollOverMesh = new THREE.Mesh( cube.geometry, rollOverMaterial );
refreshRollOverMesh();
break;
case 83: // s
width = Math.max(1, width - 1);
refreshRollOverMesh();
break;
case 68: // d
depth = depth + 1;
refreshRollOverMesh();
break;
case 65: // a
depth = Math.max(1, depth - 1);
refreshRollOverMesh();
break;
case 82: // r
height = height + 1;
refreshRollOverMesh();
break;
case 70: // f
height = Math.max(1, height - 1);
refreshRollOverMesh();
break;
case 90: // z
var intersects = getIntersects();
if (intersects.length > 0) {
dropBrick(intersects);
}
break;
case 67: // c
color = getColor();
refreshRollOverMesh();
break;
}
}
function refreshRollOverMesh() {
scene.remove( rollOverMesh );
var cube = new Brick(width, height, depth, color);
var material = new THREE.MeshBasicMaterial( { color: color, opacity: 0.5, transparent: true } );
rollOverMesh = new THREE.Mesh( cube.geometry, material );
if (rotated) rotateMesh();
scene.add( rollOverMesh );
updateOffsets();
}
function onDocumentKeyUp( event ) {
switch ( event.keyCode ) {
case 16: isShiftDown = false; break;
case 17: isCtrlDown = false; break;
case 18: addBrick = false; break;
}
}
function rotateMesh() {
rollOverMesh.applyMatrix(rotateY(-Math.PI / 2));
}
//
function animate() {
requestAnimationFrame( animate );
render();
controls.update();
}
function getColor() {
currColor = (currColor + 1) % colors.length;
return colors[currColor];
}
function render() {
// if ( isShiftDown ) {
// theta += mouse2D.x * 1.5;
// }
raycaster = projector.pickingRay( mouse2D.clone(), camera );
var intersects = raycaster.intersectObjects( scene.children );
if ( intersects.length > 0 ) {
intersector = getRealIntersector( intersects );
if ( intersector ) {
setVoxelPosition( intersector );
rollOverMesh.position = voxelPosition;
}
}
// camera.position.x = 1400 * Math.sin( THREE.Math.degToRad( theta ) );
// camera.position.z = 1400 * Math.cos( THREE.Math.degToRad( theta ) );
// camera.lookAt( scene.position );
renderer.render( scene, camera );
}
function updateOffsets() {
wOffset = width % 2 == 0 ? 1 : 2;
dOffset = depth % 2 == 0 ? 1 : 2;
}
</script>
</body>
</html>