const{createApp}=Vue const{createVuetify,useGoTo,useDisplay}=Vuetify var data={alert:{show:false,color:'success',text:'',timeout:0,},theme:{dark:false,},nav:{showDrawer:false,showTOC:true,tocPanel:0,tab:'account',post:{discussionId:38,currentPage:1,targetPage:1,total:1,anchor:0,goToOptions:{container:null,duration:0,easing:'easeInOutCubic',offset:-100,},worker:null,task:[],active:[],apiLock:[],originLike:new Map([]),},related:{block:1,}},search:{width:80,text:null,loading:false,},tags:[{id:32,url:'/t/393e394462497c427e7444554301',name:'Gain模块',color:'#3F51B5',icon:'mdi-volume-plus',},{id:36,url:'/t/15253f4262497c427a741330461e',name:'Unary Minus模块',color:'#3F51B5',icon:'mdi-numeric-negative-1',},],posts:[{id:38,num:0,uid:1,content:'\u003Cp\u003ESimulink中,当\u003Ccode\u003EGain模块\u003C/code\u003E的增益设为-1时,如果\u003Cstrong\u003E输出的数据类型和输入保持一致\u003C/strong\u003E,可以认为和\u003Ccode\u003EUnary Minus模块\u003C/code\u003E是等价的。它们:\u003C/p\u003E\u003Col\u003E\u003Cli data-list\u003D\"bullet\"\u003E\u003Cspan class\u003D\"ql-ui\" contenteditable\u003D\"false\"\u003E\u003C/span\u003E都可以将输入信号反转(乘以 -1)\u003C/li\u003E\u003Cli data-list\u003D\"bullet\"\u003E\u003Cspan class\u003D\"ql-ui\" contenteditable\u003D\"false\"\u003E\u003C/span\u003E对于标量或简单向量信号,它们产生的输出是完全一样的\u003C/li\u003E\u003Cli data-list\u003D\"bullet\"\u003E\u003Cspan class\u003D\"ql-ui\" contenteditable\u003D\"false\"\u003E\u003C/span\u003E都支持标量、向量、矩阵输入,只要维度兼容\u003C/li\u003E\u003C/ol\u003E\u003Cp\u003E\u003Cbr\u003E\u003C/p\u003E\u003Cp\u003EGain模块和Unary Minus模块有一些细微的差别,例如:\u003C/p\u003E\u003Cp\u003EUnary Minus模块专用于取负操作,语义更清晰,增益无法调整(总是 -1)。\u003C/p\u003E\u003Cp\u003EGain 模块是通用增益放大器,可以将增益设为任意值,包括 -1。\u003C/p\u003E\u003Cp\u003E\u003Cbr\u003E\u003C/p\u003E\u003Cp\u003EUnary Minus模块的输出数据类型与输入数据类型相同。它不支持数据类型转换,输出的数据类型始终与输入的数据类型一致。\u003C/p\u003E\u003Cp\u003EGain 模块允许指定输出数据类型,当输入和输出数据类型不一致时,Gain 模块会进行数据类型转换。\u003C/p\u003E\u003Cp\u003E\u003Cbr\u003E\u003C/p\u003E\u003Cp\u003E注意Gain模块的数据类型转换是在乘法运算之后再进行的,也就是说输入数据类型为in8时,当输入-128,将输出数据类型设为int16,Gain模块依然会面临Unary Minus模块同样的整数类型溢出问题。\u003C/p\u003E\u003Cp\u003E换个说法,当Gain模块的增益为-1时,如果输入数据类型为无符号类型,仿真和生成代码时都会触发报错。\u003C/p\u003E',ipRegion:'',updatedByUid:1,createdAt:'2025-04-22 20:00:23',updatedAt:'2025-04-22 20:16:51',mentionNum:0,mentionedBy:[],mentionUsers:[],likeUsers:[],},],usersMap:new Map([[1,{uid:1,url:'/u/5b180a1c62497c417c6940494325070c',avatar:'/a/5b180a1c62497c417c6940494325070c',username:'Simulink',}],]),related:[{title:'Simulink Gain模块旋转,Simulink Gain怎么变方向',url:'/d/26172f0b62497c417c69415404610d7818177135',},{title:'Simulink Unary Minus模块简介',url:'/d/5b18031f62497c417c69415404610378033a5f36',},{title:'Simulink Gain -k-,Simulink Gain模块显示为 -K-',url:'/d/0d63161462497c417c694154046102784d305551',},{title:'Simulink Gain模块作用,Simulink Gain模块参数设置,Simulink Gain模块设置变量,Simulink Gain模块怎么设置kp',url:'/d/161f343c62497c417c694154046101782d2e663d',},{title:'Simulink Gain模块简介',url:'/d/013d094262497c417c694154046100780e0f645d',},],} const App={setup(){const goTo=useGoTo() const{mdAndUp}=useDisplay() return{goTo,mdAndUp}},data(){return data;},mounted(){const themeDark=localStorage.getItem("themeDark") if(themeDark!==null){this.theme.dark=JSON.parse(themeDark)} if(this.nav.post.total>(this.nav.post.currentPage-1)*100+20){let moreLen=100 if(this.nav.post.total({id:null,num:(this.nav.post.currentPage-1)*100+v,uid:null,content:null,ipRegion:null,updatedByUid:null,createdAt:null,updatedAt:null,mentionNum:null,mentionedBy:null,mentionUsers:null,likeUsers:null,})) this.posts.push(...morePosts.slice(20))} this.workerStart() const hash=window.location.hash const match=hash.match(/#(\d+)/) if(match){const n=parseInt(match[1],10) if(n>=(this.nav.post.currentPage-1)*100&&n{this.jumpTo(n)})}} this.$nextTick(()=>{this.addHeadingIds() tocbot.init({tocSelector:'.toc',contentSelector:'#post-content-0',headingSelector:'h2, h3, h4',headingsOffset:100,scrollSmoothOffset:-100,scrollSmooth:true,collapseDepth:6,onClick:function(e){setTimeout(()=>{history.replaceState(null,'',window.location.pathname+window.location.search)},0)},}) tocbot.refresh()});},beforeUnmount(){this.workerStop() if(this.quill){this.quill.destroy() this.quill=null}},computed:{dposts(){return this.posts.slice(20);},},created(){},methods:{successAlert(msg){this.alert={show:true,color:'success',text:msg,timeout:1500,}},failureAlert(msg){this.alert={show:true,color:'error',text:msg,timeout:5000,}},flipThemeDark(){this.theme.dark=!this.theme.dark localStorage.setItem("themeDark",JSON.stringify(this.theme.dark))},toSearch(){if(!this.search.text){this.failureAlert('搜索词不能为空') return} let keywords=this.search.text.trim() if(keywords.length<1){this.failureAlert('搜索词不能为空') return} if(keywords.length>100){this.failureAlert('搜索词过长') return} this.doSearch(keywords)},toReg(){window.location.href="/reg"},toLogin(){window.location.href="/login"},toPage(){let url=window.location.href url=url.replace(/(\/\d+)?(#[0-9]+)?$/,this.nav.post.targetPage>1?`/${this.nav.post.targetPage}`:'') window.location.href=url},toLoadRelated({done}){if(this.my&&this.my.uid){this.apiLoadRelated({done})}else{done('ok')}},workerStart(){this.nav.post.worker=setInterval(()=>{this.workerLoad()},500);},workerStop(){if(this.nav.post.worker){clearInterval(this.nav.post.worker);this.nav.post.worker=null;}},async jumpTo(num){const page=Math.floor(num/100)+1 const i=num-(page-1)*100 if(page===this.nav.post.currentPage){this.goTo("#post-"+num,this.nav.post.goToOptions) if(!this.posts[i].id){const block=Math.floor(num/20)+1 this.nav.post.apiLock[block]=true await this.apiLoadPosts(block) this.$nextTick(()=>{this.goTo("#post-"+num,this.nav.post.goToOptions)})}}else{let url=window.location.href url=url.replace(/(\/\d+)?(#[0-9]+)?$/,page>1?`/${page}`:'') url=url+"#"+num window.location.href=url}},postIntersect(num){return(isIntersecting,entries,observer)=>{if(isIntersecting){this.nav.post.task.push(num) this.nav.post.active.push(num) this.nav.post.active=this.nav.post.active.filter(item=>Math.abs(item-num)<=5) this.nav.post.active.sort((a,b)=>a-b)}else{this.nav.post.active=this.nav.post.active.filter(item=>item!==num)} if(this.nav.post.active[0]){this.nav.post.anchor=this.nav.post.active[0]}else{this.nav.post.anchor=0}}},async apiLoadPosts(block){try{const response=await axios.post('/fapi/v1/post/block/'+block,{discussionId:this.nav.post.discussionId,}) if(response.data.code===0){response.data.data.posts.forEach(post=>{const i=post.num%100 Object.assign(this.posts[i],post)}) response.data.data.users.forEach(user=>{this.usersMap.set(user.uid,user)})}else{this.failureAlert('回帖数据加载失败: '+response.data.msg)}}catch(error){this.failureAlert('回帖数据加载失败: '+error)} this.nav.post.apiLock[block]=false},workerLoad(){while(this.nav.post.task.length){const num=this.nav.post.task.pop() const i=num-(this.nav.post.currentPage-1)*100 if(!this.posts[i].id){const block=Math.floor(num/20)+1 if(!this.nav.post.apiLock[block]){this.nav.post.apiLock[block]=true this.apiLoadPosts(block)}}}},getTimeInfo(t){if(!t){return ""} const now=new Date();const then=new Date(t);const diff=now-then;const minute=60*1000;const hour=minute*60;const day=hour*24;const month=day*30;const year=month*12;if(diffpost.num===num) if(!post){return "#"+num} const uid=post.uid const username=this.usersMap.get(uid)?.username if(!username){return "#"+num} return username},getUsernameByPostId(id){const post=this.posts.find(post=>post.id===id) if(!post){return "#"+this.getPostNumByPostId(id)} const uid=post.uid const username=this.usersMap.get(uid).username if(!username){return "#"+this.getPostNumByPostId(id)} return username},getPostNumByPostId(id){const post=this.posts.find(post=>post.id===id) return post.num},getPostById(id){const post=this.posts.find(post=>post.id===id) return post},getPostByNum(num){const post=this.posts.find(post=>post.num===num) return post},getAvatarByUid(uid){const avatar=this.usersMap.get(uid)?.avatar if(!avatar){return this.getRandomAvatar()} return avatar},getAvatarByPostNum(num){const post=this.posts.find(post=>post.num===num) if(!post){return this.getRandomAvatar()} const uid=post.uid return this.getAvatarByUid(uid)},getRandomAvatar(){const num=Math.floor(Math.random()*100) return "https://randomuser.me/api/portraits/men/"+num+".jpg"},getUrlByUid(uid){const url=this.usersMap.get(uid)?.url if(!url){return ""} return url},getTextByPostNum(num){const post=this.posts.find(post=>post.num===num) if(!post||!post.content){return '点击跳转到#'+num+'查看'} const parser=new DOMParser() const doc=parser.parseFromString(post.content,'text/html') const text=doc.body.textContent||'' return text.slice(0,100)},addHeadingIds(){const content=document.getElementById('post-content-0') if(!content){this.nav.showTOC=false return} const headings=content.querySelectorAll('h2, h3, h4') headings.forEach((heading,index)=>{if(!heading.id){heading.id=`toc-nav-${index}`}}) if(headings.length==0){this.nav.showTOC=false}},async doSearch(keywords){this.search.loading=true try{const response=await axios.post('/fapi/v1/search',{keywords:keywords,}) if(response.data.code===0){if(response.data.data.hash&&response.data.data.hash.length===32){window.location.href="/s/"+response.data.data.hash}else{this.failureAlert('搜索失败: 搜索服务异常')}}else{this.failureAlert('搜索失败: '+response.data.msg)}}catch(error){this.failureAlert('搜索失败: '+error)} this.search.loading=false},debounce(fn,delay){let timer=null return function(...args){if(timer)clearTimeout(timer) timer=setTimeout(()=>{fn.apply(this,args)},delay);};},},watch:{'nav.post.targetPage':{handler:async function(newV,oldV){this.toPage()},immediate:false},},} const vuetify=createVuetify({defaults:{global:{ripple:true,},},}) const app=createApp(App) app.use(vuetify).mount("#app")