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| <!-- chapter-08-01.html -->
<!DOCTYPE html>
<html>
<head>
<title>Group</title>
<script type="text/javascript" src="../libs/three.js"></script>
<script type="text/javascript" src="../libs/stats.js"></script>
<script type="text/javascript" src="../libs/dat.gui.js"></script>
<style>
body {
margin: 0;
overflow: hidden;
}
</style>
</head>
<body>
<div id="Stats-output">
</div>
<div id="WebGL-output">
</div>
<script type="text/javascript">
function init() {
var stats = initStats();
var scene = new THREE.Scene();
var camera = new THREE.PerspectiveCamera(45, window.innerWidth / window.innerHeight, 0.1, 1000);
var webGLRenderer = new THREE.WebGLRenderer();
webGLRenderer.setClearColor(new THREE.Color(0xEEEEEE, 1.0));
webGLRenderer.setSize(window.innerWidth, window.innerHeight);
webGLRenderer.shadowMapEnabled = true;
camera.position.x = 30;
camera.position.y = 30;
camera.position.z = 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);
document.getElementById("WebGL-output").appendChild(webGLRenderer.domElement);
var step = 0.03;
var sphere;
var cube;
var group;
var controls = new function () {
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 () {
scene.remove(group);
sphere = createMesh(new THREE.SphereGeometry(5, 10, 10));
cube = createMesh(new THREE.BoxGeometry(6, 6, 6));
sphere.position.set(controls.spherePosX, controls.spherePosY, controls.spherePosZ);
cube.position.set(controls.cubePosX, controls.cubePosY, controls.cubePosZ);
group = new THREE.Group();
group.add(sphere);
group.add(cube);
scene.add(group);
var arrow = new THREE.ArrowHelper(new THREE.Vector3(0, 1, 0), group.position, 10, 0x0000ff);
scene.add(arrow);
};
};
var gui = new dat.GUI();
var sphereFolder = gui.addFolder("sphere");
sphereFolder.add(controls, "spherePosX", -20, 20).onChange(function (e) {
sphere.position.x = e;
});
sphereFolder.add(controls, "spherePosZ", -20, 20).onChange(function (e) {
sphere.position.z = e;
});
sphereFolder.add(controls, "spherePosY", -20, 20).onChange(function (e) {
sphere.position.y = e;
});
sphereFolder.add(controls, "sphereScale", 0, 3).onChange(function (e) {
sphere.scale.set(e, e, e);
});
var cubeFolder = gui.addFolder("cube");
cubeFolder.add(controls, "cubePosX", -20, 20).onChange(function (e) {
cube.position.x = e;
});
cubeFolder.add(controls, "cubePosZ", -20, 20).onChange(function (e) {
cube.position.z = e;
});
cubeFolder.add(controls, "cubePosY", -20, 20).onChange(function (e) {
cube.position.y = e;
});
cubeFolder.add(controls, "cubeScale", 0, 3).onChange(function (e) {
cube.scale.set(e, e, e);
});
var cubeFolder = gui.addFolder("group");
cubeFolder.add(controls, "groupPosX", -20, 20).onChange(function (e) {
group.position.x = e;
});
cubeFolder.add(controls, "groupPosZ", -20, 20).onChange(function (e) {
group.position.z = e;
});
cubeFolder.add(controls, "groupPosY", -20, 20).onChange(function (e) {
group.position.y = e;
});
cubeFolder.add(controls, "groupScale", 0, 3).onChange(function (e) {
group.scale.set(e, e, e);
});
gui.add(controls, "grouping");
gui.add(controls, "rotate");
controls.redraw();
render();
function createMesh(geom) {
var meshMaterial = new THREE.MeshNormalMaterial();
meshMaterial.side = THREE.DoubleSide;
var wireFrameMat = new THREE.MeshBasicMaterial();
wireFrameMat.wireframe = true;
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;
}
requestAnimationFrame(render);
webGLRenderer.render(scene, camera);
}
function initStats() {
var stats = new Stats();
stats.setMode(0);
stats.domElement.style.position = 'absolute';
stats.domElement.style.left = '0px';
stats.domElement.style.top = '0px';
document.getElementById("Stats-output").appendChild(stats.domElement);
return stats;
}
};
window.onload = init;
</script>
</body>
</html>
|
