面向对象的分析方法在工程系统分析中的应用及魔方源代码-Java-Applet小程序

附录A面向对象的分析方法在工程系统分析中的应用本文介绍了面向对象的分析方法，并给出了一种面向对象的分析模型的表达方法。以液压系统设计为工程应用背景，探讨了面向对象的分析方法在工程系统分析中的应用。按照类-对象层、结构层、主题层、属性层和服务层五个层次分析了液压系统的类层次构成及其连接与通信。一、面向对象的分析简介：在大型软件开发项目中，无论是实时控制系统、数据库系统、人工智能系统，还是具体到自动代码生成，或扩展到一个工厂的计算机集成制造系统，都存在着一个共同的需求，就是在系统分析阶段建立系统的信息模型。在众多的系统分析方法中，面向对象的分析（OOA）方法更接近于人类的思维方式，正在被越来越多的系统分析人员使用。持面向对象观点的人认为，计算机程序的结构应该与所需解决的问题一致，而不是与某种分析方法保持一致。经验表明，对任何软件系统而言，其中最稳定的成份是相应问题论域（PROBLEMDOMAIN）的成份。而系统出问题通常也是由于问题论域的某些成份。因此，对问题论域进行充分分析及准确理解是保证系统稳定的重要基础。面向对象分析方法是建立在对象及其属性、类属及其成员、整体及其部分这些基本概念的基础上。大英百科全书指出：“人类在认识和理解现实世界的过程中普遍运用着三个构造法则：1.区分对象及其属性。例如，区分一棵树和树的大小或空间位置关系。2.区分整体对象及其组成部分。例如，区分一棵树和树枝。3.不同对象类的形成及区分。例如，所有树的类和所有石头的类的形成和区分。”OOA就是建立在以上三个常用法则的基础上。OOA模型描述了表示某个特定论域中的对象，以及各种各样的结构关系和通信关系。OOA模型有两个用途。首先，每个软件都建立在特定的现实世界中，OOA模型就是用来形式化该现实世界的“视图”。它建立起各种对象，分别表示软件系统主要的组织结构以及现实世界强加给软件系统的各种规则和约束条件。其次，给定一组对象，OOA模型规定了它们如何协同才能完成软件系统所指定的工作。这种协同在模型中是以表明对象之间通信方式的一组消息连接来表示的。以上简单介绍了面向对象的分析及在本文中的表示方法，下面将研究面向对象的分析在液压系统设计中的应用：第一层，对象－类层表示待开发系统的基本构造块。对象都是现实世界中应用论域概念的抽象。这一层是整个模型的基础。图符的外层边界表示实例边界，实际上它表明对象是非空的。而图符的内层边界则表示类边界。有时可以定义一些不当作程序块来实现的对象，即只有类边界而没有实例边界。在某些情形下，定义这种对象是很有用的。我们将它们称为模板类或抽象类。模板类可以为结成较高级的聚合体提供一条方便的途径。第二层，属性层，对象的属性和实例连接共同组成了OOA模型的属性层。我们把对象所存储的数据称为对象的属性。类的实例之间互相约束，它们必须遵从应用论域的某些限制条件或事务规则。例如，当定金取消后，相应的订户也应该被取消，这可能是一项事务规则。我们称这些约束为实例连接。第三层，服务层，对象的服务和消息通信组成了OOA模型的服务层。我们把对象所做的工作称为服务或方法。系统的不同对象都分别执行一定的工作或功能，它们之间通过消息通信，即所谓的协同，如图中的箭头所示。对象的服务及对象实例之间的消息通信共同组成了OOA模型的服务层。第四层，结构层，该层负责捕捉特定应用论域中的结构关系。泛化---特化结构获得类及成员组织，有助于刻画问题空间的类－成员层次，它通过搜集公共特性并把这种特性扩充到特例中来显示现实世界事件的通用性及专用性。整体-部分结构表达了人类的一种基本组织方式，即自然的整体和部分的结构关系，从而把一些部分的聚合构造成整体。例如，一辆汽车由发动机、传动装置和刹车装置组成。第五层，主题层，相当于全局系统的子系统或子模型。由于OOA模型的结构庞大而复杂，因此众多的对象有时很难处理。于是，可以把对象归到各个主题层中，可以把有关的对象用一个边框框起来加以实现。附录BObject-orientedanalysisintheapplicationofengineeringanalysisInthispaper,object-orientedanalysis,andgivesamodeloftheobject-orientedanalysisoftheexpression.Tothehydraulicsystemdesignengineeringbackgroundtoexploretheobject-orientedanalysisintheapplicationofengineeringanalysis.Inaccordancewiththecategory-Targetlayer,layerstructure,thethemelayer,servicesandattributesofthefive-levelanalysisofthehydraulicsystemofaclasshierarchyanditsconnectionandcommunication.

First,theobject-orientedanalysisIntroduction:thelarge-scalesoftwaredevelopmentprojects,whetheritisreal-timecontrolsystems,databasesystemsandartificialintelligencesystems,orspecifictoautomaticcodegeneration,orexpandtheplanttoacomputerintegratedmanufacturingsystem,thereisaAcommondemandintheanalysisstageistheestablishmentofinformationsystemsmodel.Amongthemanymethodsofanalysis,object-orientedanalysis(OOA)ismoreclosetohumanwayofthinking,isbeingmoreandmoresystematicanalysisofofficers.Object-orientedperspectiveontheviewthatthestructureofacomputerprogramshouldberequiredtoresolvetheissueofconsensus,ratherthanwithaconsistentmethodofanalysis.Experiencehasshownthatforanysoftwaresystem,oneofthemoststableelementoftheproblemisthecorrespondingdomain(PROBLEMDOMAIN)theingredients.Thesystemisalsotheproblembecausetheproblemisusuallythedomainofcertainingredients.Therefore,theissueofdomainanalysisofthefullandaccurateunderstandingistoensuresystemicstabilityoftheimportantfoundation.

Sowhatisittargetedintheend»Tongsudejiang,referringtotheobjectintheworldisanobjectiveentity,itcan"knowsomething"(thatis,datastorage),"dosomething"(thatis,packagingservices),and"synergywithotherobjects"(throughtheexchangeofinformation),Completed(modular)systemallthefeatures.Whyistheobjectofinterest»Theanswerissimpledatetoreuse.Whilecomputergeneratedfromthebeginning,wehavereusablecode,butobject-orientedtechnologyallowsreuseisnotonlythecode,therearemanyotherthings.Byobject-orientedtechnology,wecanreuserequirements,analysis,design,testplans,userinterfaceandarchitecture,andsoon.Object-orientedanalysisisbuiltonobjectsandtheirproperties,acategoryofitsmembers,andsomeofthesebasicoverallconceptofthefoundation.EncyclopediaBritannica:

"Inhumanawarenessandunderstandingoftherealworldinthecourseofthreetectonicwidespreaduseofthelaw:

1.Distinguishbetweenobjectsandtheirproperties.Forexample,thedistinctionbetweenatreeandthetreethesizeorlocationofspace.

2.Distinguishbetweentheobjectanditscomponents.Forexample,thedistinctionbetweenatreeandtreebranches.

3.Adifferentkindofobjectanddistinguish.Forexample,allthetreesandalltypesofstoneformationandtypeofdistinction."OOAisbuiltonmorethanthreeonthebasisofcommonlaw.OOAmodelthatdescribesaspecificdomainofthetarget,aswellasavarietyofstructuralrelationsandcommunicationsrelations.OOAmodelhastwopurposes.Firstofall,everysoftwarehavebeenestablishedinspecificrealworld,OOAmodelisusedtoformalizethereal-world"view."Itestablishedavarietyoftargets,namelythatthemajorsoftwaresystemsaswellastheorganizationalstructureoftherealworldimposedonthesoftwaresystemofrulesandconstraints.Secondly,givenasetoftargets,OOAmodelprovidesthemhowcollaborativesoftwaresystemtocompletetheworkasspecified.Thissynergyinthemodelthatistargetedmeansofcommunicationbetweenagroupofsourcesthatlinktothe.

Introducedmorethanasimpleobject-orientedanalysisinthispaper,andinthatway,thefollowingwillstudytheobject-orientedanalysisofthehydraulicsystemdesignapplications.

Thefirsttier,object-kindofquestionthatthedevelopmentofthebasicsystembuildingblocks.Objectsareintherealworldapplicationoftheconceptofabstractdomain.Thisisamodelofthewhole.Figureattheouterboundarythatexamplesoftheborder,infactitshowsthattargetednon-empty.Theiconsliningtheborder,saidtheboundary.Sometimessomecanbedefinedasablocktoachievethetarget,thatis,onlyboundaryandnoexamplesoftheborder.Insomecases,thedefinitionofthistargetisveryuseful.Wewillcallthemtemplateclassorabstractcategory.Classcanformatemplateforthemoreseniorofthepolymertoprovideaconvenientmeans.Thesecondlayer,layerattributes,theobject'spropertiesandexamplesoflinkingtogetheramodeloftheattributesoftheOOA.Weobjecttothestorageofdataknownastheobject'sproperties.Examplesofclassbetweentheconstraints,theymustcomplywiththeapplicationofthedomainOncertainrestrictionsorconditionsofservicerules.Forexample,aftertheabolitionofdeposit,thecorrespondingsubscribersshouldalsobecancelled,thismaybeaservicerules.Wecallfortheseexamplesoflinkingbound.

Thethirdtier,servicelayer,theobjectofcommunicationservicesandnewsoftheOOAmodeloftheservice.Weobjecttotheworkdonebythemethodknownastheservicesor.Thedifferentobjectsarerespectivelytheimplementationofcertainworkorfunction,communicationbetweenthemthroughthenews,theso-calledsynergies,asshowninFigureinthearrow.ObjectofservicesandexamplesoftargetedinformationoncommunicationsbetweenthecommoncomponentsoftheOOAmodeloftheservice.

Thefourthlayer,structurallayer,thelayerresponsibleforthecaptureapplication-specificdomainofthestructureofrelations.Generalization-thespecialtypeofstructureandaccesstomemberorganizations,helptodescribethetypeofspaceproblem-membersoflevels,throughthecollectionofpublicandexpandedtosuchpropertiesinspecialcasestoshowtherealworldeventsforthegeneralandSexual.Overall-partofthestructureofabasichumanorganization,thatisnaturalandpartoftheoverallstructure,sothatsomepartsofthepolymerstructureasawhole.Forexample,acarfromtheengine,transmissionandbrakecomponents.

Fifthfloor,thethemelayer,orglobalsystemsubsystemormodel.AsOOAmodelofthestructureoflargeandcomplex,somanyoftheobjectsitissometimesdifficulttohandle.Thus,theobjectcanreturntothethemeofall,canbetheobjectofaframe-uptoachieve.importjava.awt.*;importjava.applet.Applet;publicfinalclassrubikextendsApplet{inti;intj;intk;intn;into;intp;intq;intlastX;intlastY;intdx;intdy;intrectX[];intrectY[];ColorcolList[];Colorbgcolor;finaldoublesideVec[]={0.0,0.0,1.0,0.0,0.0,-1,0.0,-1,0.0,1.0,0.0,0.0,0.0,1.0,0.0,-1,0.0,0.0};finaldoublecorners[]={-1,-1,-1,1.0,-1,-1,1.0,1.0,-1,-1,1.0,-1,-1,-1,1.0,1.0,-1,1.0,1.0,1.0,1.0,-1,1.0,1.0};doubletopCorners[];doublebotCorners[];finalintsides[]={4,5,6,7,3,2,1,0,0,1,5,4,1,2,6,5,2,3,7,6,0,4,7,3};finalintnextSide[]={2,3,4,5,4,3,2,5,1,3,0,5,1,4,0,2,1,5,0,3,2,0,4,1};finalintmainBlocks[]={0,3,0,3,0,3,0,3,0,3,0,3,0,3,0,3,0,3,0,3,0,3,0,3};finalinttwistDir[]={-1,1,-1,1,-1,1,-1,1,1,1,1,1,1,-1,1,-1,1,1,1,1,-1,1,-1,1};finalintcolDir[]={-1,-1,1,-1,1,-1};finalintcircleOrder[]={0,1,2,5,8,7,6,3};inttopBlocks[];intbotBlocks[];intsideCols[];intsideW;intsideH;intdragReg;inttwistSide;intnearSide[];intbuffer[];doubledragCorn[];doubledragDir[];doubleeye[]={0.3651,0.1826,-0.9129};doubleeX[]={0.9309,-0.0716,0.3581};doubleeY[];doubleTeye[];doubleTeX[];doubleTeY[];doublelight[];doubletemp[]={0.0,0.0,0.0};doubletemp2[]={0.0,0.0,0.0};doublenewCoord[];doublesx;doublesy;doublesdxh;doublesdyh;doublesdxv;doublesdyv;doubled;doublet1;doublet2;doublet3;doublet4;doublet5;doublet6;doublephi;doublephibase;doubleCphi;doubleSphi;doublecurrDragDir[];booleannaturalState;booleantwisting;booleanOKtoDrag; doublelocal0;Mathm;GraphicsoffGraphics;ImageoffImage;publicvoidinit(){offImage=createImage(120,120);offGraphics=offImage.getGraphics();rectX=newint[4];rectY=newint[4];newCoord=newdouble[16];dragDir=newdouble[24];dragCorn=newdouble[96];topCorners=newdouble[24];botCorners=newdouble[24];topBlocks=newint[24];botBlocks=newint[24];buffer=newint[12];nearSide=newint[12];light=newdouble[3];Teye=newdouble[3];TeX=newdouble[3];TeY=newdouble[3];currDragDir=newdouble[2];eY=newdouble[3];vecProd(eye,0,eX,0,eY,0);normalize(eY,0);colList=newColor[120];for(i=0;i<20;i++){colList[i]=newColor(103+i*8,103+i*8,103+i*8);colList[i+20]=newColor(i*6,i*6,84+i*9);colList[i+40]=newColor(84+i*9,i*5,i*5);colList[i+60]=newColor(i*6,84+i*9,i*6);colList[i+80]=newColor(84+i*9,84+i*9,i*6);colList[i+100]=newColor(84+i*9,55+i*8,i*3);}sideCols=newint[54];for(i=0;i<54;i++)sideCols[i]=i/9;bgcolor=findBGColor();resize(125,125);repaint();}publicColorfindBGColor(){Colorcolor;Stringstring2="0123456789abcdef";intan[]=newint[6];Stringstring1=getParameter("bgcolor");if(string1!=null&&string1.length()==6){for(i=0;i<6;i++)for(j=0;j<16;j++)if(string1.charAt(i)==string2.charAt(j))an[i]=j;color=newColor(an[0]*16+an[1],an[2]*16+an[3],an[4]*16+an[5]);}elsecolor=Color.lightGray;returncolor;}publicdoublescalProd(doublead1[],inti,doublead2[],intj){returnad1[i]*ad2[j]+ad1[i+1]*ad2[j+1]+ad1[i+2]*ad2[j+2];}publicdoublevNorm(doublead[],inti){returnMath.sqrt(ad[i]*ad[i]+ad[i+1]*ad[i+1]+ad[i+2]*ad[i+2]);}publicdoublecosAng(doublead1[],inti,doublead2[],intj){returnscalProd(ad1,i,ad2,j)/(vNorm(ad1,i)*vNorm(ad2,j));}publicvoidnormalize(doublead[],inti){local0=vNorm(ad,i);ad[i]=ad[i]/local0;ad[i+1]=ad[i+1]/local0;ad[i+2]=ad[i+2]/local0;}publicvoidscalMult(doublead[],inti,doubled){ad[i]=ad[i]*d;ad[i+1]=ad[i+1]*d;ad[i+2]=ad[i+2]*d;}publicvoidaddVec(doublead1[],inti,doublead2[],intj){ad2[j]+=ad1[i];ad2[j+1]+=ad1[i+1];ad2[j+2]+=ad1[i+2];}publicvoidsubVec(doublead1[],inti,doublead2[],intj){ad2[j]-=ad1[i];ad2[j+1]-=ad1[i+1];ad2[j+2]-=ad1[i+2];}publicvoidcopyVec(doublead1[],inti,doublead2[],intj){ad2[j]=ad1[i];ad2[j+1]=ad1[i+1];ad2[j+2]=ad1[i+2];}publicvoidvecProd(doublead1[],inti,doublead2[],intj,doublead3[],intk){ad3[k]=ad1[i+1]*ad2[j+2]-ad1[i+2]*ad2[j+1];ad3[k+1]=ad1[i+2]*ad2[j]-ad1[i]*ad2[j+2];ad3[k+2]=ad1[i]*ad2[j+1]-ad1[i+1]*ad2[j];}publicvoidcutUpCube(){for(i=0;i<24;i++){topCorners[i]=corners[i];botCorners[i]=corners[i];}copyVec(sideVec,3*twistSide,temp,0);copyVec(temp,0,temp2,0);scalMult(temp,0,1.3333);scalMult(temp2,0,0.6667);for(i=0;i<8;i++){booleanflag=false;for(j=0;j<4;j++)if(i==sides[twistSide*4+j])flag=true;if(flag)subVec(temp2,0,botCorners,i*3);elseaddVec(temp,0,topCorners,i*3);}for(i=0;i<24;i++){topBlocks[i]=mainBlocks[i];botBlocks[i]=mainBlocks[i];}for(i=0;i<6;i++){if(i==twistSide){botBlocks[i*4+1]=0;botBlocks[i*4+3]=0;}else{k=-1;for(j=0;j<4;j++)if(nextSide[i*4+j]==twistSide)k=j;switch(k){case0:topBlocks[i*4+3]=1;botBlocks[i*4+2]=1;break;case1:topBlocks[i*4]=2;botBlocks[i*4+1]=2;break;case2:topBlocks[i*4+2]=2;botBlocks[i*4+3]=2;break;case3:topBlocks[i*4+1]=1;botBlocks[i*4]=1;break;case-1:topBlocks[i*4+1]=0;topBlocks[i*4+3]=0;break;}}}}publicbooleankeyDown(Eventevent,inti){if(i==114){twisting=false;naturalState=true;for(this.i=0;this.i<54;this.i++)sideCols[this.i]=this.i/9;repaint();}elseif(i==115){twisting=false;naturalState=true;for(this.i=0;this.i<20;this.i++)colorTwist((int)(Math.random()*6),(int)(Math.random()*3+1.0));repaint();}returnfalse;}publicbooleanmouseDrag(Eventevent,inti,intj){if(!twisting&&OKtoDrag){OKtoDrag=false;booleanflag=false;for(this.i=0;this.i<dragReg;this.i++){doubled1=dragCorn[this.i*8+1]-dragCorn[this.i*8];doubled2=dragCorn[this.i*8+5]-dragCorn[this.i*8+4];doubled3=dragCorn[this.i*8+3]-dragCorn[this.i*8];doubled4=dragCorn[this.i*8+7]-dragCorn[this.i*8+4];doubled5=(d4*((double)lastX-dragCorn[this.i*8])-d3*((double)lastY-dragCorn[this.i*8+4]))/(d1*d4-d3*d2);doubled6=(-d2*((double)lastX-dragCorn[this.i*8])+d1*((double)lastY-dragCorn[this.i*8+4]))/(d1*d4-d3*d2);if(d5>0.0&&d5<1.0&&d6>0.0&&d6<1.0){currDragDir[0]=dragDir[this.i*2];currDragDir[1]=dragDir[this.i*2+1];d=currDragDir[0]*(i-lastX)+currDragDir[1]*(j-lastY);d=d*d/((currDragDir[0]*currDragDir[0]+currDragDir[1]*currDragDir[1])*((i-lastX)*(i-lastX)+(j-lastY)*(j-lastY)));if(d>0.6){flag=true;twistSide=nearSide[this.i];this.i=100;}}}if(flag){if(naturalState){cutUpCube();naturalState=false;}twisting=true;phi=0.02*(currDragDir[0]*(i-lastX)+currDragDir[1]*(j-lastY))/Math.sqrt(currDragDir[0]*currDragDir[0]+currDragDir[1]*currDragDir[1]);repaint();returnfalse;}}OKtoDrag=false;if(!twisting){dx=lastX-i;copyVec(eX,0,temp,0);scalMult(temp,0,(double)dx*0.016);addVec(temp,0,eye,0);vecProd(eY,0,eye,0,eX,0);normalize(eX,0);normalize(eye,0);dy=j-lastY;copyVec(eY,0,temp,0);scalMult(temp,0,(double)dy*0.016);addVec(temp,0,eye,0);vecProd(eye,0,eX,0,eY,0);normalize(eY,0);normalize(eye,0);lastX=i;lastY=j;repaint();}else{phi=0.02*(currDragDir[0]*(i-lastX)+currDragDir[1]*(j-lastY))/Math.sqrt(currDragDir[0]*currDragDir[0]+currDragDir[1]*currDragDir[1]);repaint();}returnfalse;}publicbooleanmouseDown(Eventevent,inti,intj){lastX=i;lastY=j;OKtoDrag=true;returnfalse;}publicbooleanmouseUp(Eventevent,inti,intj){if(twisting){doubled;twisting=false;phibase+=phi;phi=0.0;for(d=phibase;d<0.0;d+=125.662)/*nullbody*/;intk=(int)(d*3.183);if(k%5==0||k%5==4){k=(k+1)/5%4;if(colDir[twistSide]<0)k=(4-k)%4;phibase=0.0;naturalState=true;colorTwist(twistSide,k);}repaint();}returnfalse;}publicvoidcolorTwist(inti1,intj1){intk4=0;intj4=j1*2;for(intk1=0;k1<8;k1++){buffer[j4]=sideCols[i1*9+circleOrder[k1]];j4=(j4+1)%8;}for(inti2=0;i2<8;i2++)sideCols[i1*9+circleOrder[i2]]=buffer[i2];j4=j1*3;for(intj2=0;j2<4;j2++){for(inti3=0;i3<4;i3++)if(nextSide[nextSide[i1*4+j2]*4+i3]==i1)k4=i3;for(intj3=0;j3<3;j3++){switch(k4){case0:buffer[j4]=sideCols[nextSide[i1*4+j2]*9+j3];break;case1:buffer[j4]=sideCols[nextSide[i1*4+j2]*9+2+3*j3];break;case2:buffer[j4]=sideCols[nextSide[i1*4+j2]*9+8-j3];break;case3:buffer[j4]=sideCols[nextSide[i1*4+j2]*9+6-3*j3];break;}j4=(j4+1)%12;}}j4=0;for(intk2=0;k2<4;k2++){for(intk3=0;k3<4;k3++)if(nextSide[nextSide[i1*4+k2]*4+k3]==i1)k4=k3;for(inti4=0;i4<3;i4++){switch(k4){case0:sideCols[nextSide[i1*4+k2]*9+i4]=buffer[j4];break;case1:sideCols[nextSide[i1*4+k2]*9+2+3*i4]=buffer[j4];break;case2:sideCols[nextSide[i1*4+k2]*9+8-i4]=buffer[j4];break;case3:sideCols[nextSide[i1*4+k2]*9+6-3*i4]=buffer[j4];break;}j4++;}}}publicvoidpaint(Graphicsg){dragReg=0;offGraphics.setColor(bgcolor);offGraphics.fillRect(0,0,120,120);if(naturalState)fixBlock(eye,eX,eY,corners,mainBlocks,0);else{copyVec(eye,0,Teye,0);copyVec(eX,0,TeX,0);Cphi=Math.cos(phi+phibase);Sphi=-Math.sin(phi+phibase);switch(twistSide){case0:Teye[0]=Cphi*eye[0]+Sphi*eye[1];TeX[0]=Cphi*eX[0]+Sphi*eX[1];Teye[1]=-Sphi*eye[0]+Cphi*eye[1];TeX[1]=-Sphi*eX[0]+Cphi*eX[1];break;case1:Teye[0]=Cphi*eye[0]-Sphi*eye[1];TeX[0]=Cphi*eX[0]-Sphi*eX[1];Teye[1]=Sphi*eye[0]+Cphi*eye[1];TeX[1]=Sphi*eX[0]+Cphi*eX[1];break;case2:Teye[0]=Cphi*eye[0]-Sphi*eye[2];TeX[0]=Cphi*eX[0]-Sphi*eX[2];Teye[2]=Sphi*eye[0]+Cphi*eye[2];TeX[2]=Sphi*eX[0]+Cphi*eX[2];break;case3:Teye[1]=Cphi*eye[1]+Sphi*eye[2];TeX[1]=Cphi*eX[1]+Sphi*eX[2];Teye[2]=-Sphi*eye[1]+Cphi*eye[2];TeX[2]=-Sphi*eX[1]+Cphi*eX[2];break;case4:Teye[0]=Cphi*eye[0]+Sphi*eye[2];TeX[0]=Cphi*eX[0]+Sphi*eX[2];Teye[2]=-Sphi*eye[0]+Cphi*eye[2];TeX[2]=-Sphi*eX[0]+Cphi*eX[2];break;case5:Teye[1]=Cphi*eye[1]-Sphi*eye[2];TeX[1]=Cphi*eX[1]-Sphi*eX[2];Teye[2]=Sphi*eye[1]+Cphi*eye[2];TeX[2]=Sphi*eX[1]+Cphi*eX[2];break;}vecProd(Teye,0,TeX,0,TeY,0);if(scalProd(eye,0,sideVec,twistSide*3)<0.0){fixBlock(Teye,TeX,TeY,topCorners,topBlocks,2);fixBlock(eye,eX,eY,botCorners,botBlocks,1);}else{fixBlock(eye,eX,eY,botCorners,botBlocks,1);fixBlock(Teye,TeX,TeY,topCorners,topBlocks,2);}}g.drawImage(offImage,0,0,this);}publicvoidupdate(Graphicsg){paint(g);}publicvoidfixBlock(doublead1[],doublead2[],doublead3[],doublead4[],intan[],inti){copyVec(ad1,0,light,0);scalMult(light,0,-3);addVec(ad2,0,light,0);subVec(ad3,0,light,0);for(this.i=0;this.i<8;this.i++){newCoord[this.i*2]=60+35.1*scalProd(ad4,this.i*3,ad2,0);newCoord[this.i*2+1]=60-35.1*scalProd(ad4,this.i*3,ad3,0);}for(this.i=0;this.i<6;this.i++){if(scalProd(ad1,0,sideVec,3*this.i)>0.001){k=(int)(9.6*(1.0-cosAng(light,0,sideVec,3*this.i)));offGraphics.setColor(Color.black);for(j=0;j<4;j++){rectX[j]=(int)newCoord[2*sides[this.i*4+j]];rectY[j]=(int)newCoord[2*sides[this.i*4+j]+1];}offGraphics.fillPolygon(rectX,rectY,4);sideW=an[this.i*4+1]-an[this.i*4];sideH=an[this.i*4+3]-an[this.i*4+2];if(sideW>0){sx=newCoord[2*sides[this.i*4]];sy=newCoord[2*sides[this.i*4]+1];sdxh=(newCoord[2*sides[this.i*4+1]]-sx)/sideW;sdxv=(newCoord[2*sides[this.i*4+3]]-sx)/sideH;sdyh=(newCoord[2*sides[this.i*4+1]+1]-sy)/sideW;sdyv=(newCoord[2*sides[this.i*4+3]+1]-sy)/sideH;p=an[this.i*4+2];for(n=0;n<sideH;n++){q=an[this.i*4];for(o=0;o<sideW;o++){rectX[0]=(int)(sx+((double)o+0.1)*sdxh+((double)n+0.1)*sdxv);rectX[1]=(int)(sx+((double)o+0.9)*sdxh+((double)n+0.1)*sdxv);rectX[2]=(int)(sx+((double)o+0.9)*sdxh+((double)n+0.9)*sdxv);rectX[3]=(int)(sx+((double)o+0.1)*sdxh+((double)n+0.9)*sdxv);rectY[0]=(int)(sy+((double)o+0.1)*sdyh+((double)n+0.1)*sdyv);