【发布时间】：2020-04-23 14:56:13
【问题描述】：
如何使平面可在 X 、 Y 方向拖动。在这里，我正在尝试在 X 和 Y 方向上绘制平面的框剪辑。但我不知道如何使它可拖动到特定方向。谁能帮我解决这个问题。
我想让飞机在鼠标事件中只能在自己的方向上拖动
import * as THREE from '../build/three.module.js';
import Stats from './jsm/libs/stats.module.js';
import { GUI } from './jsm/libs/dat.gui.module.js';
import { OrbitControls } from './jsm/controls/OrbitControls.js';
import { DragControls } from './jsm/controls/DragControls.js';
var camera, scene, renderer, startTime, object, stats;
init();
animate();
function init() {
camera = new THREE.PerspectiveCamera(36, window.innerWidth / window.innerHeight, 0.0001, 100000);
camera.position.set(0, 1.3, 8);
scene = new THREE.Scene();
// Lights
scene.add(new THREE.AmbientLight(0x505050));
scene.background = new THREE.Color('white')
var spotLight = new THREE.SpotLight(0xffffff);
spotLight.angle = Math.PI / 5;
spotLight.penumbra = 0.2;
spotLight.position.set(2, 3, 3);
spotLight.castShadow = true;
spotLight.shadow.camera.near = 3;
spotLight.shadow.camera.far = 10;
spotLight.shadow.mapSize.width = 1024;
spotLight.shadow.mapSize.height = 1024;
scene.add(spotLight);
var dirLight = new THREE.DirectionalLight(0x55505a, 1);
dirLight.position.set(0, 3, 0);
dirLight.castShadow = true;
dirLight.shadow.camera.near = 1;
dirLight.shadow.camera.far = 10;
dirLight.shadow.camera.right = 1;
dirLight.shadow.camera.left = - 1;
dirLight.shadow.camera.top = 1;
dirLight.shadow.camera.bottom = - 1;
dirLight.shadow.mapSize.width = 1024;
dirLight.shadow.mapSize.height = 1024;
scene.add(dirLight);
// ***** Clipping planes: *****
var localPlane = new THREE.Plane(new THREE.Vector3(0, - 1, 0), 1.5);
var helper1 = new THREE.PlaneHelper(localPlane, 3, 0xffff00);
scene.add(helper1);
var globalPlane = new THREE.Plane(new THREE.Vector3(- 1, 0, 0), 1);
var helper = new THREE.PlaneHelper(globalPlane, 3, 0xffff00);
scene.add(helper); // Geometry
var material = new THREE.MeshPhongMaterial({
color: 0x80ee10,
shininess: 100,
side: THREE.DoubleSide,
// ***** Clipping setup (material): *****
clippingPlanes: [localPlane],
clipShadows: true
});
var geometry = new THREE.TorusKnotBufferGeometry(0.4, 0.08, 95, 20);
object = new THREE.Mesh(geometry, material);
object.castShadow = true;
scene.add(object);
var ground = new THREE.Mesh(
new THREE.PlaneBufferGeometry(9, 9, 1, 1),
new THREE.MeshPhongMaterial({ color: 0xa0adaf, shininess: 150 })
);
ground.rotation.x = - Math.PI / 2; // rotates X/Y to X/Z
ground.receiveShadow = true;
// scene.add( ground );
// Stats
stats = new Stats();
document.body.appendChild(stats.dom);
// Renderer
renderer = new THREE.WebGLRenderer({ antialias: true });
renderer.shadowMap.enabled = true;
renderer.setPixelRatio(window.devicePixelRatio);
renderer.setSize(window.innerWidth, window.innerHeight);
window.addEventListener('resize', onWindowResize, false);
document.body.appendChild(renderer.domElement);
// ***** Clipping setup (renderer): *****
var globalPlanes = [globalPlane],
Empty = Object.freeze([]);
renderer.clippingPlanes = Empty; // GUI sets it to globalPlanes
renderer.localClippingEnabled = true;
renderer.clippingPlanes = globalPlanes;
// Controls
var controls = new OrbitControls(camera, renderer.domElement);
controls.target.set(0, 1, 0);
controls.update();
// controls1 = new DragControls([...globalPlane], camera, renderer.domElement);
// controls1.addEventListener('drag', render);
// GUI
var gui = new GUI(),
folderLocal = gui.addFolder('Local Clipping'),
propsLocal = {
get 'Enabled'() {
return renderer.localClippingEnabled;
},
set 'Enabled'(v) {
renderer.localClippingEnabled = v;
},
get 'Shadows'() {
return material.clipShadows;
},
set 'Shadows'(v) {
material.clipShadows = v;
},
get 'Plane'() {
return localPlane.constant;
},
set 'Plane'(v) {
localPlane.constant = v;
}
},
folderGlobal = gui.addFolder('Global Clipping'),
propsGlobal = {
get 'Enabled'() {
console.log('hitting 1')
return renderer.clippingPlanes !== Empty;
console.log(renderer.clippingPlanes);
},
set 'Enabled'(v) {
console.log('hitting 2')
renderer.clippingPlanes = v ? globalPlanes : Empty;
console.log(renderer.clippingPlanes);
},
get 'Plane'() {
return globalPlane.constant;
},
set 'Plane'(v) {
globalPlane.constant = v;
}
};
folderLocal.add(propsLocal, 'Enabled');
folderLocal.add(propsLocal, 'Shadows');
folderLocal.add(propsLocal, 'Plane', 0.3, 1.25);
folderGlobal.add(propsGlobal, 'Enabled');
folderGlobal.add(propsGlobal, 'Plane', - 0.4, 3);
// Start
startTime = Date.now();
document.addEventListener('click', onClick, false);
}
function onClick(event) {
event.preventDefault();
if (enableSelection === true) {
var draggableObjects = controls.getObjects();
draggableObjects.length = 0;
mouse.x = (event.clientX / window.innerWidth) * 2 - 1;
mouse.y = - (event.clientY / window.innerHeight) * 2 + 1;
raycaster.setFromCamera(mouse, camera);
var intersections = raycaster.intersectObjects(objects, true);
if (intersections.length > 0) {
var object = intersections[0].object;
if (group.children.includes(object) === true) {
object.material.emissive.set(0x000000);
scene.attach(object);
} else {
object.material.emissive.set(0xaaaaaa);
group.attach(object);
}
controls.transformGroup = true;
draggableObjects.push(group);
}
if (group.children.length === 0) {
controls.transformGroup = false;
draggableObjects.push(...objects);
}
}
render();
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize(window.innerWidth, window.innerHeight);
}
function animate() {
// var currentTime = Date.now();
// var time = ( currentTime - startTime ) / 1000;
requestAnimationFrame(animate);
// object.position.y = 0.8;
// object.rotation.x = time * 0.5;
// object.rotation.y = time * 0.2;
// object.scale.setScalar( Math.cos( time ) * 0.125 + 0.875 );
stats.begin();
renderer.render(scene, camera);
stats.end();
}
【问题讨论】：
标签： three.js