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example29.html
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example29.html
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<!DOCTYPE html>
<html>
<head>
<title>Example 29 - Grouping</title>
<style>
body{
margin: 0;
overflow: hidden;
}
#stats { /* Align stats top-left */
position: absolute;
left: 0px;
top: 0px;
}
</style>
</head>
<body>
<!-- JavaScript libraries -->
<script src="http://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/three.js/r67/three.min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/stats.js/r11/Stats.min.js"></script>
<script src="http://cdnjs.cloudflare.com/ajax/libs/dat-gui/0.5/dat.gui.min.js"></script>
<script src="assets/libs/TrackballControls.js"></script>
<!-- Javascript code that runs our Three.js examples -->
<script>
// once everything is loaded, we run our Three.js stuff.
$(function () {
var stats = initStats();
// create a scene, that will hold all our elements such as objects, cameras and lights.
var scene = new THREE.Scene();
// create a camera, which defines where we're looking at.
var camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);
// create a render and set the size
var webGLRenderer = new THREE.WebGLRenderer();
webGLRenderer.setClearColor(new THREE.Color(0xEEEEEE, 1.0));
webGLRenderer.setSize(window.innerWidth, window.innerHeight);
webGLRenderer.shadowMapEnabled = true;
// add the sphere to the scene
scene.add(sphere);
// position and point the camera to the center of the scene
camera.position.set(30,30,30);
camera.lookAt(new THREE.Vector3(0, 0, 0));
var ground = new THREE.PlaneGeometry(100, 100, 50, 50);
var groundMesh = THREE.SceneUtils.createMultiMaterialObject(ground,
[new THREE.MeshBasicMaterial({wireframe: true, overdraw: true, color: 000000}),
new THREE.MeshBasicMaterial({color: 0x00ff00, transparent: true, opacity: 0.5}
)
])
groundMesh.rotation.x = -0.5 * Math.PI;
scene.add(groundMesh);
// add the output of the renderer to the html element
$('body').append(webGLRenderer.domElement);
// call the render function
var step = 0.03;
var sphere;
var cube;
var group;
var bboxMesh;
// setup the control gui
var controls = new function () {
// we need the first child, since it's a multimaterial
this.cubePosX = 0;
this.cubePosY = 3;
this.cubePosZ = 10;
this.spherePosX = 10;
this.spherePosY = 5;
this.spherePosZ = 0;
this.groupPosX = 10;
this.groupPosY = 5;
this.groupPosZ = 0;
this.grouping = false;
this.rotate = false;
this.groupScale = 1;
this.cubeScale = 1;
this.sphereScale = 1;
this.redraw = function () {
// remove the old group
//scene.remove(sphere);
//scene.remove(cube);
scene.remove(group);
// create a new one
sphere = createMesh(new THREE.SphereGeometry(5, 10, 10));
cube = createMesh(new THREE.CubeGeometry(6, 6, 6));
sphere.position.set(controls.spherePosX, controls.spherePosY, controls.spherePosZ);
cube.position.set(controls.cubePosX, controls.cubePosY, controls.cubePosZ);
// add it to the scene.
// also create a group, only used for rotating
group = new THREE.Object3D();
group.add(sphere);
group.add(cube);
scene.add(group);
controls.positionBoundingBox();
var arrow = new THREE.ArrowHelper(new THREE.Vector3(0, 1, 0), group.position, 10, 0x0000ff);
scene.add(arrow);
};
this.positionBoundingBox = function () {
scene.remove(bboxMesh);
var box = setFromObject(group);
var width = box.max.x - box.min.x;
var height = box.max.y - box.min.y;
var depth = box.max.z - box.min.z;
var bbox = new THREE.BoxGeometry(width, height, depth);
bboxMesh = new THREE.Mesh(bbox, new THREE.MeshBasicMaterial({color: 0x000000, vertexColors: THREE.VertexColors, wireframeLinewidth: 2, wireframe: true}));
scene.add(bboxMesh);
bboxMesh.position.x = ((box.min.x + box.max.x) / 2);
bboxMesh.position.y = ((box.min.y + box.max.y) / 2);
bboxMesh.position.z = ((box.min.z + box.max.z) / 2);
}
}
var gui = new dat.GUI();
var sphereFolder = gui.addFolder("sphere");
sphereFolder.add(controls, "spherePosX", -20, 20).onChange(function (e) {
sphere.position.x = e;
controls.positionBoundingBox()
});
sphereFolder.add(controls, "spherePosZ", -20, 20).onChange(function (e) {
sphere.position.z = e;
controls.positionBoundingBox()
});
sphereFolder.add(controls, "spherePosY", -20, 20).onChange(function (e) {
sphere.position.y = e;
controls.positionBoundingBox()
});
sphereFolder.add(controls, "sphereScale", 0, 3).onChange(function (e) {
sphere.scale.set(e, e, e);
controls.positionBoundingBox()
});
var cubeFolder = gui.addFolder("cube");
cubeFolder.add(controls, "cubePosX", -20, 20).onChange(function (e) {
cube.position.x = e;
controls.positionBoundingBox()
});
cubeFolder.add(controls, "cubePosZ", -20, 20).onChange(function (e) {
cube.position.z = e;
controls.positionBoundingBox()
});
cubeFolder.add(controls, "cubePosY", -20, 20).onChange(function (e) {
cube.position.y = e;
controls.positionBoundingBox()
});
cubeFolder.add(controls, "cubeScale", 0, 3).onChange(function (e) {
cube.scale.set(e, e, e);
controls.positionBoundingBox()
});
var cubeFolder = gui.addFolder("group");
cubeFolder.add(controls, "groupPosX", -20, 20).onChange(function (e) {
group.position.x = e;
controls.positionBoundingBox()
});
cubeFolder.add(controls, "groupPosZ", -20, 20).onChange(function (e) {
group.position.z = e;
controls.positionBoundingBox()
});
cubeFolder.add(controls, "groupPosY", -20, 20).onChange(function (e) {
group.position.y = e;
controls.positionBoundingBox()
});
cubeFolder.add(controls, "groupScale", 0, 3).onChange(function (e) {
group.scale.set(e, e, e);
controls.positionBoundingBox()
});
gui.add(controls, "grouping");
gui.add(controls, "rotate");
controls.redraw();
render();
function createMesh(geom) {
// assign two materials
var meshMaterial = new THREE.MeshNormalMaterial();
meshMaterial.side = THREE.DoubleSide;
var wireFrameMat = new THREE.MeshBasicMaterial();
wireFrameMat.wireframe = true;
// create a multimaterial
var plane = THREE.SceneUtils.createMultiMaterialObject(geom, [meshMaterial, wireFrameMat]);
return plane;
}
function render() {
stats.update();
if (controls.grouping && controls.rotate) {
group.rotation.y += step;
}
if (controls.rotate && !controls.grouping) {
sphere.rotation.y += step;
cube.rotation.y += step;
}
controls.positionBoundingBox();
// render using requestAnimationFrame
requestAnimationFrame(render);
webGLRenderer.render(scene, camera);
}
// http://jsfiddle.net/MREL4/
function setFromObject(object) {
var box = new THREE.Box3();
var v1 = new THREE.Vector3();
object.updateMatrixWorld(true);
box.makeEmpty();
object.traverse(function (node) {
if (node.geometry !== undefined && node.geometry.vertices !== undefined) {
var vertices = node.geometry.vertices;
vertices.forEach(function (vertex) {
v1.copy(vertex);
v1.applyMatrix4(node.matrixWorld);
box.expandByPoint(v1);
});
}
});
return box;
};
function initStats() {
var stats = new Stats();
stats.setMode(0); // 0: fps, 1: ms
$('body').append(stats.domElement);
return stats;
}
});
</script>
</body>
</html>