Three.js ThreeJS-具有不同旋转中心和观察点的轨道控制
我一直在我的应用程序中使用OrbitControl来允许摄像机在世界各地旋转。最近,我试图增强控制,使相机能够围绕任意点旋转,而不仅仅是相机注视点。我还没有取得多少成功 在代码中,如果我删除这个:Three.js ThreeJS-具有不同旋转中心和观察点的轨道控制,three.js,Three.js,我一直在我的应用程序中使用OrbitControl来允许摄像机在世界各地旋转。最近,我试图增强控制,使相机能够围绕任意点旋转,而不仅仅是相机注视点。我还没有取得多少成功 在代码中,如果我删除这个:this.object.lookAt(this.target)它工作得不好。有什么想法吗 一些图片需要澄清: 我围绕对象的中心(轴)旋转了摄影机,但摄影机没有注视中心。只需更新controls.target属性,例如: controls.target.set(1, 5, 7); 或以网格为目标: c
this.object.lookAt(this.target)代码>它工作得不好。有什么想法吗
一些图片需要澄清:
我围绕对象的中心(轴)旋转了摄影机,但摄影机没有注视中心。只需更新controls.target属性,例如:
controls.target.set(1, 5, 7);
或以网格为目标:
controls.target.copy(mesh.position)
OrbitControls设计用于环绕场景,摄影机视口直接看着控件旋转目标。它们的设计并不是为了单独处理对象旋转和相机,它们有变形控制,但不支持阻尼
使用动态观察控件旋转,将摄影机视口锁定为查看中心(虚线),并围绕中心(红线)旋转:
如果移动/平移目标,则摄影机目标和旋转中心将一起移动,如下所示:
您需要的是旋转中心和摄影机目标是独立的,因此摄影机围绕对象旋转,同时观察以下某个点:
创建自定义摄影机/旋转功能似乎有两种方法:
1)修改轨道控制
将camera.lookAt更改为从controls.target偏移
查看控制所需的更改:
自定义动态观察控件演示:
2)修改转换控件
更改变换控件以允许阻尼、自由旋转和隐藏gizmo覆盖
自定义转换控件的演示
3)创建自己的对象旋转控件
import * as THREE from "https://threejs.org/build/three.module.js";
var mesh, renderer, scene, camera, controls;
var radius = 5;
var group;
var targetRotationX = 0;
var targetRotationOnMouseDownX = 0;
var targetRotationY = 0;
var targetRotationOnMouseDownY = 0;
var mouseX = 0;
var mouseXOnMouseDown = 0;
var mouseY = 0;
var mouseYOnMouseDown = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
var finalRotationY
init();
animate();
function init() {
// renderer
renderer = new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth, window.innerHeight);
renderer.setPixelRatio(window.devicePixelRatio);
document.body.appendChild(renderer.domElement);
// scene
scene = new THREE.Scene();
// camera
camera = new THREE.PerspectiveCamera(40, window.innerWidth / window.innerHeight, 1, 10000);
camera.position.set(0, radius * 2, radius * 2);
camera.lookAt(0, radius, 0)
// controls
/* controls = new OrbitControls( camera, renderer.domElement ); */
document.addEventListener('mousedown', onDocumentMouseDown, false);
document.addEventListener('touchstart', onDocumentTouchStart, false);
document.addEventListener('touchmove', onDocumentTouchMove, false);
// ambient
scene.add(new THREE.AmbientLight(0x222222));
// light
var light = new THREE.DirectionalLight(0xffffff, 1);
light.position.set(20, 20, 0);
scene.add(light);
// geometry
var geometry = new THREE.SphereGeometry(radius, 12, 8);
// material
var material = new THREE.MeshPhongMaterial({
color: 0x00ffff,
flatShading: true,
transparent: true,
opacity: 0.7,
});
// mesh
group = new THREE.Object3D();
mesh = new THREE.Mesh(geometry, material);
group.add(mesh);
scene.add(group);
}
function onDocumentMouseDown(event) {
event.preventDefault();
document.addEventListener('mousemove', onDocumentMouseMove, false);
document.addEventListener('mouseup', onDocumentMouseUp, false);
document.addEventListener('mouseout', onDocumentMouseOut, false);
mouseXOnMouseDown = event.clientX - windowHalfX;
targetRotationOnMouseDownX = targetRotationX;
mouseYOnMouseDown = event.clientY - windowHalfY;
targetRotationOnMouseDownY = targetRotationY;
}
function onDocumentMouseMove(event) {
mouseX = event.clientX - windowHalfX;
mouseY = event.clientY - windowHalfY;
targetRotationY = targetRotationOnMouseDownY + (mouseY - mouseYOnMouseDown) * 0.02;
targetRotationX = targetRotationOnMouseDownX + (mouseX - mouseXOnMouseDown) * 0.02;
}
function onDocumentMouseUp(event) {
document.removeEventListener('mousemove', onDocumentMouseMove, false);
document.removeEventListener('mouseup', onDocumentMouseUp, false);
document.removeEventListener('mouseout', onDocumentMouseOut, false);
}
function onDocumentMouseOut(event) {
document.removeEventListener('mousemove', onDocumentMouseMove, false);
document.removeEventListener('mouseup', onDocumentMouseUp, false);
document.removeEventListener('mouseout', onDocumentMouseOut, false);
}
function onDocumentTouchStart(event) {
if (event.touches.length == 1) {
event.preventDefault();
mouseXOnMouseDown = event.touches[0].pageX - windowHalfX;
targetRotationOnMouseDownX = targetRotationX;
mouseYOnMouseDown = event.touches[0].pageY - windowHalfY;
targetRotationOnMouseDownY = targetRotationY;
}
}
function onDocumentTouchMove(event) {
if (event.touches.length == 1) {
event.preventDefault();
mouseX = event.touches[0].pageX - windowHalfX;
targetRotationX = targetRotationOnMouseDownX + (mouseX - mouseXOnMouseDown) * 0.05;
mouseY = event.touches[0].pageY - windowHalfY;
targetRotationY = targetRotationOnMouseDownY + (mouseY - mouseYOnMouseDown) * 0.05;
}
}
function animate() {
requestAnimationFrame(animate);
rotate();
renderer.render(scene, camera);
}
function rotate() {
group.rotation.y += (targetRotationX - group.rotation.y) * 0.1;
finalRotationY = (targetRotationY - group.rotation.x);
if (group.rotation.x <= 1 && group.rotation.x >= -1) {
group.rotation.x += finalRotationY * 0.1;
}
if (group.rotation.x > 1) {
group.rotation.x = 1
}
if (group.rotation.x < -1) {
group.rotation.x = -1
}
}
import*作为三个源”https://threejs.org/build/three.module.js";
var网格、渲染器、场景、摄影机、控件;
var半径=5;
var组;
var targetRotationX=0;
var TargetRotationNoMouseDownx=0;
var targetRotationY=0;
var TargetRotationNoMousedowny=0;
var-mouseX=0;
var mouseXOnMouseDown=0;
var-mouseY=0;
var mouseYOnMouseDown=0;
var windowHalfX=window.innerWidth/2;
var windowHalfY=window.innerHeight/2;
var金融旋转
init();
制作动画();
函数init(){
//渲染器
renderer=new THREE.WebGLRenderer();
renderer.setSize(window.innerWidth、window.innerHeight);
renderer.setPixelRatio(window.devicePixelRatio);
document.body.appendChild(renderer.doElement);
//场面
场景=新的三个。场景();
//摄像机
摄像头=新的三个透视摄像头(40,window.innerWidth/window.innerHeight,11000);
摄像机位置设置(0,半径*2,半径*2);
摄影机。注视(0,半径,0)
//控制
/*控件=新的轨道控件(摄影机、渲染器.doElement)*/
文件。添加的文件列表(“mousedown”,onDocumentMouseDown,false);
document.addEventListener(“touchstart”,onDocumentTouchStart,false);
文档。addEventListener('touchmove',onDocumentTouchMove,false);
//环境的
添加(新的3.AmbientLight(0x22222));
//轻的
var灯=新的三方向灯(0xffffff,1);
光。位置。设置(20,20,0);
场景。添加(灯光);
//几何学
var几何=新的三个。球度法(半径,12,8);
//材料
var材质=新的3.0网格材质({
颜色:0x00ffff,
对,,
透明:是的,
不透明度:0.7,
});
//网孔
group=new THREE.Object3D();
网格=新的三个网格(几何体、材质);
组。添加(网格);
场景。添加(组);
}
函数onDocumentMouseDown(事件){
event.preventDefault();
document.addEventListener('mousemove',onDocumentMouseMove,false);
文件。添加的列表器(“鼠标”,onDocumentMouseUp,false);
文件。添加的监听器('mouseout',onDocumentMouseOut,false);
mouseXOnMouseDown=event.clientX-windowHalfX;
targetRotationNoMouseDownX=targetRotationX;
mouseYOnMouseDown=event.clientY-windowHalfY;
targetRotationNoMousedowny=targetRotationY;
}
onDocumentMouseMove函数(事件){
mouseX=event.clientX-windowHalfX;
mouseY=event.clientY-windowHalfY;
targetRotationY=TARGETROTATIONNMOUSEDOWNY+(mouseY-mouseYOnMouseDown)*0.02;
targetRotationX=targetRotationNoMouseDownX+(mouseX-mouseXOnMouseDown)*0.02;
}
onDocumentMouseUp函数(事件){
document.removeEventListener('mousemove',onDocumentMouseMove,false);
删除文档监听器('mouseup',onDocumentMouseUp,false);
文件。删除文件监听器('mouseout',onDocumentMouseOut,false);
}
onDocumentMouseOut函数(事件){
document.removeEventListener('mousemove',onDocumentMouseMove,false);
删除文档监听器('mouseup',onDocumentMouseUp,false);
文件。删除文件监听器('mouseout',onDocumentMouseOut,false);
}
函数onDocumentTouchStart(事件){
if(event.touchs.length==1){
event.preventDefault();
mouseXOnMouseDown=event.touchs[0].pageX-windowHalfX;
targetRotationNoMouseDownX=targetRotationX;
mouseYOnMouseDown=event.touchs[0].pageY-windowHalfY;
targetRotationNoMousedowny=targetRotationY;
}
}
函数onDocumentTouchMove(事件){
if(event.touchs.length==1){
event.preventDefault();
mouseX=event.touchs[0].pageX-windowHalfX;
targetRotationX=targetRotationNoMouseDownX+(mouseX-mouseXOnMouseDown)*0.05;
mouseY=event.touchs[0].pageY-windowHalfY;
targetRotationY=TARGETROTATIONNMOUSEDOWNY+(mouseY-mouseYOnMouseDown)*0.05;
}
}
函数animate(){
请求动画帧(动画);
旋转();
渲染器。渲染(场景、摄影机);
}
函数rotate(){
group.rotation.y+=(targetRotationX-group.rotation.y)*0.1;
最终旋转=(targetRotationY-group.rotation.x);
if(group.rotation.x=-1){
group.rotation.x+=最终旋转Y*0.1;
}
如果