threejs-test/test.html at master · ElsaXing/threejs-test · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<button onclick="add('cube'); addControls(cube)" id="addCube">cube</button>
<button onclick="add('sphere'); addControls(sphere)" id="addSphere">sphere</button>
<br>
<button onclick="deleteObject(); deleteControls()">delete</button>

<script src="js/three.min.js"></script>
<script src='js/dat.gui.min.js'></script>
<script src="js/TrackballControls.js"></script>
<!--<script src="js/OrbitControls.js"></script>-->
<script>
    var scene, camera, renderer;
    var light, backgroundLight;
    var gui, control;
    var raycaster, mouseVector,INTERSECTED, SELECTED;
    var plane = new THREE.Plane();
    var offset = new THREE.Vector3();
    var HEIGHT = window.innerHeight,
            WIDTH = window.innerWidth;
    var objects = new THREE.Object3D();

    scene = new THREE.Scene();

    camera = new THREE.PerspectiveCamera(75, WIDTH/HEIGHT,.1,1000);
    camera.position.set(5,5,15);
    camera.lookAt(new THREE.Vector3(0,0,0));

    renderer = new THREE.WebGLRenderer({antialisa:true});
    renderer.setClearColor(0xCCFFFF);
    renderer.setSize(WIDTH, HEIGHT);
    document.body.appendChild(renderer.domElement);

    light = new THREE.PointLight(0xffffcc, 1);
    light.position.set(10,70,100);
    scene.add(light);

    backgroundLight = new THREE.PointLight(0xffffcc, 0.5);
    backgroundLight.position.set(-10,-30,-50);
    scene.add(backgroundLight);

    controls = new THREE.TrackballControls( camera );
    controls.zoomSpeed = 0.1;

//    add geometry
    function add(mesh) {
        var geometry, material;

        if (mesh == 'cube') {
            geometry = new THREE.BoxGeometry(2,2,2);
            material = new THREE.MeshLambertMaterial({color: 0xCCFFCC});
            cube = new THREE.Mesh(geometry, material);
            cube.position.set(0,0,0);
            objects.add(cube);
        }

        else if (mesh == 'sphere') {
            geometry = new THREE.SphereGeometry(1,16,162);
            material = new THREE.MeshLambertMaterial({color: 0xCCFFCC});
            sphere = new THREE.Mesh(geometry, material);
            sphere.position.set(6,0,0);
            objects.add(sphere)
        }

        scene.add(objects);

    }

    function addControls(mesh) {
        function updateGeometry (mesh, geometry) {
            mesh.geometry.dispose();
            mesh.geometry = geometry;
        }

        var data = {
            width : 2,
            height : 2,
            depth : 2,
            radius: 1,
            widthSegments: 16,
            heightSegments: 16
        };

        function generateCube() {
            updateGeometry(mesh,
                    new THREE.CubeGeometry(
                            data.width, data.height, data.depth
                    ))
        }

        function generateSphere() {
            updateGeometry(mesh,
                    new THREE.SphereGeometry(
                            data.radius, data.widthSegments, data.heightSegments
                    ))
        }

        gui = new dat.GUI();

//        cube is not defined????
        if (mesh == cube) {
            gui.add(data,'width', 0, 10).onChange(generateCube);
            gui.add(data,'height', 0, 10).onChange(generateCube);
            gui.add(data,'depth', 0, 10).onChange(generateCube);
        } else if (mesh == sphere) {
            gui.add(data, 'radius', 0, 5).onChange(generateSphere);
        }

    }

    function deleteControls () {
        var parent = document.getElementsByClassName('ac')[0];
        var child = document.getElementsByClassName('main')[0];
        parent.removeChild(child);
    }

    function deleteObject() {

    }

//    pick
    document.addEventListener('mousemove', onMouseMove, false);
//    document.addEventListener('mousedown', onMouseDown, false);
//    document.addEventListener('mouseup', onMouseUp, false);

    raycaster = new THREE.Raycaster();
    mouseVector = new THREE.Vector2();

    function onMouseMove(e) {
        mouseVector.x = 2 * (e.clientX / window.innerWidth) - 1;
        mouseVector.y = 1 - 2 * ( e.clientY / window.innerHeight );

        raycaster.setFromCamera(mouseVector.clone(), camera);
        var intersects = raycaster.intersectObjects( objects.children );

        if ( intersects.length > 0 ) {

            if ( INTERSECTED != intersects[ 0 ].object ) {

                if ( INTERSECTED ) INTERSECTED.material.emissive.setHex( INTERSECTED.currentHex );
                INTERSECTED = intersects[ 0 ].object;
                INTERSECTED.currentHex = INTERSECTED.material.emissive.getHex();
                INTERSECTED.material.emissive.setHex( 0xFFFF99 );

                plane.setFromNormalAndCoplanarPoint(
                        camera.getWorldDirection( plane.normal ),
                        INTERSECTED.position );
            }
        } else {
            if ( INTERSECTED ) INTERSECTED.material.emissive.setHex( INTERSECTED.currentHex );
            INTERSECTED = null;
        }
        if (SELECTED) {
            if ( raycaster.ray.intersectPlane( plane, intersection ) ) {
                SELECTED.position.copy( intersection.sub( offset ) );
            }
        }
    }


    function transVector () {
        var vector = new THREE.Vector3();

        vector.set(
                ( event.clientX / window.innerWidth ) * 2 - 1,
                - ( event.clientY / window.innerHeight ) * 2 + 1,
                -1);

        vector.unproject( camera );

        var dir = vector.sub( camera.position ).normalize();

        var distance = - camera.position.z / dir.z;

        var pos = camera.position.clone().add( dir.multiplyScalar( distance ) );
        return pos;
    }


    var render = function () {

        requestAnimationFrame( render );
        controls.update();
        renderer.render( scene, camera );


    };

    window.addEventListener( 'resize', function () {

        camera.aspect = window.innerWidth / window.innerHeight;
        camera.updateProjectionMatrix();

        renderer.setSize( window.innerWidth, window.innerHeight );

    }, false );

    render();


</script>
</body>
</html>