javascript 3d网页 示例 ( three.js 初探 七)

1 完整代码下载

　　https://pan.baidu.com/s/1jjyvcp2kqxsd5g6eaypghq　　

　　提取码 3fzt (压缩包名： 2020-4-5-demo.zip)

2 图片展示

3 主要代码

  1 "use strict"
  2 
  3 class initcontrol{
  4     
  5     constructor(view, three){
  6         this.view = view;
  7         this.three = three;
  8         this.target = {object: null, isdown: false, ismove: false};
  9         this.dragtarget = {};
 10         this.group = this.add(new three.group(), null, true);
 11         this.setdrag(three.scene, three.camera, three.renderer, this.group.children);
 12         this.setorbit(three.scene, three.camera, three.renderer);
 13         this.settransform(three.scene, three.camera, three.renderer);
 14         this.setevents(view, three);
 15         this.view.updatelanguage(this.group, "ch");//更改为中文字体
 16     }
 17     
 18     add (a, b, c){ // a 添加至-> b, c 如果没有定义,新添加的对象将自动获得焦点
 19         a = this.three.add(a, b);
 20         this.view.addlist(a, b);
 21         if(c === undefined) this.settarget(a, {focuslist: true});
 22         return a;
 23     }
 24         
 25     remove (a){
 26         this.removetarget(a);
 27         this.view.removelist(a);
 28         this.three.remove(a);
 29         this.three.update();
 30     }
 31     
 32     setdrag(scene, camera, renderer, children){
 33         let drag = new three.dragcontrols(children, camera, renderer.domelement);
 34         drag.addeventlistener('hoveron', (e)=>{
 35             this.dragtarget.old = null;
 36             this.dragtarget.now = e.object;
 37         });
 38         drag.addeventlistener('hoveroff', (e)=>{
 39             this.dragtarget.now = null;
 40             this.dragtarget.old = e.object;
 41         });
 42         drag.enabled = false;
 43         this.drag = drag;
 44     }
 45     
 46     setorbit(scene, camera, renderer){
 47         let orbit = new three.orbitcontrols(camera, renderer.domelement);
 48         orbit.target = new three.vector3(0, 0, 0);//控件焦点
 49         //orbit.minpolarangle = math.pi * 0.3;//向上最大角度
 50         //orbit.maxpolarangle = math.pi * 0.4;//向下最大角度
 51         orbit.mindistance = camera.near;//最小距离
 52         orbit.maxdistance = camera.far;//最大距离
 53         orbit.autorotatespeed = 10;//自动旋转速度
 54         //orbit.panspeed = 100;//鼠标旋转速度
 55         orbit.enablezoom = true;//是否启用缩放
 56         orbit.enablekeys = true;//是否启用键盘
 57         orbit.panspeed = 1;//鼠标平移速度
 58         orbit.keypanspeed = 100;//按键平移的速度
 59         orbit.keys.left = 65;//key a左
 60         orbit.keys.up = 87;//key w前
 61         orbit.keys.right = 68;//key d右
 62         orbit.keys.bottom = 83;//key s后
 63         orbit.addeventlistener("change", ()=>{renderer.render(scene, camera);});
 64         this.orbit = orbit;
 65     }
 66     
 67     settransform(scene, camera, renderer){
 68         var transform = new three.transformcontrols(camera, renderer.domelement);
 69         transform.size = 1;
 70         scene.add(transform);
 71         this.transform = transform;
 72         transform.addeventlistener( 'dragging-changed', (e)=>{this.orbit.enabled = !e.value;});
 73         transform.addeventlistener('change', (e)=>{
 74             let type = transform.getmode(), mesh = this.target.object || e.target.object;
 75             let hc = mesh.whx.elem.listcontent.mesh.object;
 76             switch(type){
 77                 case "translate": 
 78                     hc.position.x = mesh.position.x;
 79                     hc.position.y = mesh.position.y;
 80                     hc.position.z = mesh.position.z;
 81                 break;    
 82                 case "rotate": 
 83                     hc.rotation.x = mesh.rotation.x;
 84                     hc.rotation.y = mesh.rotation.y;
 85                     hc.rotation.z = mesh.rotation.z;
 86                 break;
 87                 case "scale": 
 88                     hc.scale.x = mesh.scale.x;
 89                     hc.scale.y = mesh.scale.y;
 90                     hc.scale.z = mesh.scale.z;
 91                 break;
 92                 default: break;
 93             }
 94             this.three.boxhelper.update();
 95             renderer.render(scene, camera);
 96         });
 97     }
 98     
 99     settarget(object, param){
100         this.removetarget(this.target.object);
101         if(!object || !object.whx) return;
102         param = param || {};
103         this.three.boxhelper.setfromobject(object);
104         this.three.boxhelper.visible = true;
105         this.transform.attach(object);
106         if(param.focusliststyle === undefined) this.view.focusliststyle(object.whx.elem.son);
107         if(param.focuslist === true) this.view.focuslist(object);
108         object.whx.elem.listcontent.mesh.father.style.display = "block";//if(param.listcontent === undefined) this.view.objectcontents(object);
109         this.target.object = object;
110         this.three.update();
111     }
112     
113     removetarget(object){
114         if(!object || !object.whx) return;
115         this.three.boxhelper.visible = false;
116         this.transform.detach(object);
117         this.view.focusliststyle(object.whx.elem.son, "remove");
118         object.whx.elem.listcontent.mesh.father.style.display = "none"; //this.view.objectcontents();
119         this.target.object = null;
120         this.three.update();
121     }
122     
123     setevents(view, three){
124         
125         let _holdgroup = null, getobject = (a)=>{
126             if(a.whx_id === undefined){return;}
127             let o = three.scene.getobjectbyid(a.whx_id);
128             if(o === undefined){console.log("获取对象失败"); return;}
129             //let object = a.tagname === "summary" ? o.whx.backgroup : o;
130             return o;
131         }
132         
133         
134         //scene -> list
135         let down = ()=>{this.target.isdown = true;}
136         let move = ()=>{if(this.target.isdown === true && this.target.ismove === false) this.target.ismove = true;}
137         let up = ()=>{
138             if(this.target.ismove === false) this.settarget(this.dragtarget.now, {focuslist:true});
139             this.target.ismove = false;
140             this.target.isdown = false;
141             three.renderer.domelement.removeeventlistener("mousedown", down);
142             three.renderer.domelement.removeeventlistener("mousemove", move);
143             three.renderer.domelement.removeeventlistener("mouseup", up);
144         }
145         view.addevent(three.renderer.domelement, "mousedown", down);
146         view.addevent(three.renderer.domelement, "mousemove", move);
147         view.addevent(three.renderer.domelement, "mouseup", up);
148         
149         
150         //list -> scene
151         view.targetcallback = (a)=>{
152             if(a.whx_control_id !== undefined){ //whx_control_id = 0 删除  1 复制  2 子级
153                 if(_holdgroup !== null) _holdgroup = null;
154                 if(a.whx_control_id === 2) a.style.background = "rgba(0, 0, 200, 0.5)";
155                 let o = this.target.object;
156                 switch(a.whx_control_id){
157                     case 0: this.remove(o); break;
158                     case 1: this.settarget(this.add(o.clone(true), o)); break;
159                     case 2: _holdgroup = o; this.settarget(o); break;
160                     default: break;
161                 }
162                 return;
163             }
164             
165             if(_holdgroup !== null){//分组操作
166                 let o = getobject(a);
167                 if(o){
168                     this.remove(o);
169                     this.add(o, _holdgroup);
170                 }
171                 _holdgroup = null; 
172                 view.right.t_control[3].style.background = "";
173                 this.settarget(o); return;
174             }
175             
176             this.settarget(getobject(a));
177         }
178         
179     }
180 
181 }