太阳系行星轨道及运行

太阳系行星轨道及运行动画演示本程序对太阳系行星、卫星运行情况进行动画演示。具有以下功能：可单独（或全部）显示或隐藏某个天体、运行轨道、天体名称。可调节演示速度、画面比列、观察角度（从天球赤道到天球北极观察太阳系）。可将某个天体（例如月亮）设置为屏幕中间静止不动的天体，观察其他天体相对于该天体运行的情况。本程序改进版见：太阳系行星轨道及运行-3D立体动画演示通过设置不同的参数，可得到许多美丽而奇妙的图案，如下：

'需在窗体放置以下3个控件，所有控件均采用默认设置：'Picturel，Commandl，Timerl'注意：在属性窗口将Commandl的Index属性设置为0'其次，为窗体添加一个名为mFast的菜单，再为mFast添加一个名为mmFast的下级子菜单，并将mmFast的索引设置为0。,艮即mmFast是以序号0开头的菜单数组控件的第一个。'以下是窗体代码，在VB6.0调试通过：DimctD()AstyD,ctDsAsLong,ctPAsSingle,ctCenterAsLongDimctBiAsSingle,ctVAsSingle,ctTrackAsBoolean,ctBWAsLongDimctSeeJAsLong,ctSeeBiAsSingle,ctSetAsMenuSet'定义表示天体的数据类型PrivateTypetyDCapAsString'天体名称rAsLong '天体半径（像素，下同）aAsSingle '轨道：横半径bAsSingle 轨道：纵半径cAsSingle 轨道：焦点eAsSingle 轨道：偏心率IsHuiAsBoolean'是否彗星FatherAsLong'父天体序号：轨道焦点上的天体SeAsLong '颜色AsSingle '运行角速度JiaoAsSingle'某时刻的与父天体连线角度XAsSingle '天体当前坐标AsSinglexUpAsSingle '上一时刻坐标yUpAsSingleVisibleAsBoolean'是否显示：球体ShowCapAsBoolean'是否显示：标题GuiDaoAsBoolean'是否显示：轨道EndTypeEnumMenuSet'以下为选项菜单标示ms_All=-2ms_NoAll=-1'以下为按钮标示ms_RunStop=0'开始/暂停ms_Step '步进，下一位置ms_UnRun'后退ms_Track '轨迹：显示/隐藏ms_DefSet '默认设置ms_Center '参照系ms_Visible'天体：显示/隐藏ms_ShowCap '天体名称ms_GuiDao'轨道ms_Bi '缩放比ms_V'速度ms_SeeJ'视角EndEnumPrivateSubForm_Load()Me.ScaleMode=3:Me.Caption="太阳系行星运行演示mFast.Visible=False:ctP=3.1415926Timerl.Interval=25:Timerl.Enabled=TrueCallInit'Me.WindowState=vbMaximized'最大化窗体'窗体大小为屏幕的3/4,居中Me.MoveScreen.Width*0.1,Screen.Height*0.1,Screen.Width*0.8,Screen.Height*0.8EndSubPrivateSubForm_Resize()DimIAsLong,LAsSingle,TAsSingle,HAsSingle,H1AsSingle,WAsSingle'设置控件位置H1=Me.TextHeight("A"):L=H1*0.3:T=LL=3ForI=0ToCommand1.Count-1W=Me.TextWidth(Command1(I).Caption&"ab")Command1(I).MoveL,T,W,H1*2L=L+W+3NextT=T*2+Command1(0).Height:H=Me.ScaleHeight-TIfH>0ThenPicture1.Move0,T,Me.ScaleWidth,H'将Picture1的中心设置为坐标原点Picture1.ScaleMode=3Picture1.ScaleLeft=-Picture1.ScaleWidth*0.5Picture1.ScaleTop=-Picture1.ScaleHeight*0.5Picture1.ClsCallRun1EndSubPrivateSubInit()'初始化天体参数DimIAsLong,VAsSingle,JAsSinglectBW=0'40'四周边界空白区，仅用于调试。调试完毕应设为0。调试代码****Picture1.AutoRedraw=TruePicture1.BackColor=&H220000'&HFFFFFF'ctCenter=0:ctBi=1:ctV=1'参照系(位于中心的天体)，缩放比列，速度ctSeeJ=30:ctSeeBi=ctSeeJ/90'视点角度，视角比ctTrack=False'不显示运动轨迹(不是轨道)'添加按钮KjClsCommand1KjAddCommand1,"始/停(&K)”,ms_RunStop,”天体的运动状态：开始/暂停”KjAddCommand1,”进(&J)”,ms_Step,"步进，运行到下一位置”KjAddCommandl,"退(&T)",ms_UnRun,"步进，后退到上一位置"KjAddCommandl,"迹(&A)",ms_Track,"运动轨迹：显示/隐藏"KjAddCommand1,"默(&D)",ms_DefSet,"将所有参数恢复为默认设置"KjAddCommand1,"参照系(&C)",ms_Center,"设置参照系(位于中心的天体)"KjAddCommand1,"天体(&X)",ms_Visible,"天体：显示/隐藏"KjAddCommand1,"名称(&M)",ms_ShowCap,"天体名称：显示/隐藏"KjAddCommand1,"轨道(&G)",ms_GuiDao,"天体运行轨道：显示/隐藏"KjAddCommand1,"速度(&V)",ms_V,"设置速度"KjAddCommand1,"视角(&L)",ms_SeeJ,"设置视点角度"KjAddCommand1,"缩放(&S)",ms_Bi,"设置缩放比列"'添加天体(演示比列状态下)，半径以100像素为标准'参数依次是：名称，父天体名称，天体半径，轨道长半轴，轨道偏心率，运动角速度，天体颜色，初始角度，彗星否ctDs=-1:ReDimctD(0)AddCircle”太阳”,二22,2,0,ctP*0.008,RGB(255,200,0)AddCircle”水星"，""，5,0.5,0.206,ctP*0.03,&H999999AddCircle”金星”，二9,0.8,0.0068,ctP*0.018,&H55AAAAAddCircle”地球”,二10,1.2,0.0167,ctP*0.01,RGB(0,0,255)AddCircle”月亮”，”地球”,4,0.2,0,ctP*0.06,&H888888AddCircle”嫦娥1号”，”月亮”,2,0.06,0,ctP*0.12,&HCCCCCCAddCircle”火星”，二6,1.8,0.093,ctP*0.005,&H1155FFAddCircle”火卫1",”火星”,3,0.1,0,ctP*0.1,&HFFFF00,ctP*2*0.3AddCircle”火卫2”,”火星”,3,0.15,0,ctP*0.1,&H7777FF,ctP*2*0.7AddCircle"木星"，"",16,3,0.0483,ctP*0.003,&HEEDDCCTOC\o"1-5"\h\zAddCircle”木卫 1”,”木星”，2,0.25, 0, ctP *0.05, &H883487, ctP *2* 0.2AddCircle”木卫 2”,”木星”，2,0.3,0,ctP* 0.035, &H348888, ctP *2* 0.4AddCircle”木卫 3",”木星”,3,0.35, 0, ctP *0.03, &HAA34CC,ctP*2 *0.6AddCircle”木卫 4",”木星”，4,0.45, 0, ctP *0.02, &H888888, ctP *2* 0.8AddCircle"土星"，"",14,5,0.056,ctP*0.002,&H5599FFAddCircle”土卫6",”土星”，4,0.25,0,ctP*0.055,&H99EEEEAddCircle”天王星”，"",12,6.5,0.0461,ctP*0.0015,&HFFCCCCAddCircle”天卫3",”天王星”，3,0.2,0,ctP*0.05,&H33FF88,ctP*2*0.5AddCircle”天卫4",”天王星”，3,0.3,0,ctP*0.035,&HFF3311,ctP*2*0.8AddCircle”海王星”，"",12,9,0.0097,ctP*0.001,&HFF7766AddCircle”海卫1”,”海王星”，3,0.25,0,-ctP*0.03,&H882388AddCircle”哈雷彗星”,"",2,5.5,0.83,ctP*0.0012,&H777777,ctP*1,TrueCallForm_ResizeEndSubPrivateSubCommand1_Click(IndexAsInteger)DimIAsLong,JAsLong,nStrAsString,ZuAsVariantDimnSelAsLong,nAllAsLong,nNoAsLongctSet=Val(Command1(Index).Tag)'得到按钮标示KjClsmmFast '清除菜单'装载快捷菜单，并勾选选定项目SelectCasectSetCasems_DefSet:CallInit:Run1:ExitSub '默认设置Casems_RunStop:Timer1.Enabled=NotTimer1.Enabled:ExitSub'开始/暂停Casems_Track:ctTrack=NotctTrack:Picture1.Cls:CallRun1'保留运动轨迹Casems_Step'步进，前进到下一位置IfNotTimer1.EnabledThenRun1TrueTimer1.Enabled=FalseCasems_UnRun'步进，后退到下一位置IfNotTimer1.EnabledThenRun1True,TrueTimer1.Enabled=FalseCasems_Bi'缩放比列Zu=Array(0.1,0.2,0.3,0.4,"-",0.5,0.6,0.7,0.8,0.9,"-",1,1.2,1.5,1.8,2,3,5,8,10)KjAddZummFast,Zu,ctBi,"倍":GoToShow1'添加数组菜单，并勾选ctBiCasems_SeeJ'视点角度Zu=Array("90度(天球北极)"，"80度"，"70度"，"60度"，"50度"，"45度"，"40度”,"30度”,"20度”,"15度”,"10度”,"5度”,"0度(天球赤道)")KjAddZummFast,Zu,ctSeeJ:GoToShow1'添加数组菜单，并勾选ctSeeJCasems_V'速度Zu=Array(0.1,0.2,0.3,0.4,”-”,0.5,0.6,0.7,0.8,0.9,"-",1,1.5,2,2.5,3,4,5,7.5,10)KjAddZummFast,Zu,ctV,”倍”:GoToShow1CaseElse'装载天体名称ForI=0ToctDsJ=Ji(I)'天体I的级别KjAddmmFast,"&"&I&""&String(J*2,"")&ctD(I).CapNextEndSelect'勾选选定天体SelectCasectSetCasems_Center:mmFast(ctCenter).Checked=True:GoToShow1'参照系(中心天体)Casems_ShowCap'显示天体名称ForI=0ToctDs:mmFast(I).Checked=ctD(I).ShowCap:NextCasems_Visible'天体是否可见ForI=0ToctDs:mmFast(I).Checked=ctD(I).Visible:NextCasems_GuiDao'轨道ForI=0ToctDs:mmFast(I).Checked=ctD(I).GuiDao:NextCaseElse:ExitSubEndSelectKjAddmmFast,"-"nAll=KjAdd(mmFast,"全选”,ms_All)nNo=KjAdd(mmFast,"全不选"，ms_NoAll)ForI=0ToctDsIfmmFast(I).CheckedThennSel=nSel+1NextIfnSel=0ThenmmFast(nNo).Checked=True:mmFast(nNo).Enabled=FalseIfnSel=ctDs+1ThenmmFast(nAll).Checked=True:mmFast(nAll).Enabled=FalseShow1:Command1(Index).BackColor=&HFFCCCC'将选中按钮设置为淡蓝色Me.PopupMenumFast,,Command1(Index).Left,Command1(Index).Top+Command1(Index).Height-3Command1(Index).BackColor=Me.BackColorEndSubPrivateSubmmFast_Click(IndexAsInteger)'通过快捷菜单设置天体有关参数DimnTagAsMenuSet,IAsLong,TFAsBooleannTag=Val(mmFast(Index).Tag)'菜单标示：ms_All全选，ms_NoAll全不选SelectCasectSet'ctSet:按钮标示，在Command1_Click中设置Casems_V'速度ctV=Val(mmFast(Index).Caption)Casems_SeeJ'视点角度ctSeeJ=Val(mmFast(Index).Caption)'视点角度ctSeeBi=ctSeeJ/90'视角比ForI=0ToctDs:ctD(I).xUp=0:ctD(I).yUp=0:NextCasems_Bi'缩放比列ctBi=Val(mmFast(Index).Caption)ForI=0ToctDs:ctD(I).xUp=0:ctD(I).yUp=0:NextCasems_Center'参照系(中心天体)ctCenter=IndexForI=0ToctDs:ctD(I).xUp=0:ctD(I).yUp=0:NextCasems_ShowCap'显示名称IfIndex<=ctDsThenctD(Index).ShowCap=NotctD(Index).ShowCapElseTF=nTag=ms_AllForI=0ToctDs:ctD(I).ShowCap=TF:NextEndIfCasems_Visible'天体是否可见IfIndex<=ctDsThenctD(Index).Visible=NotctD(Index).VisibleElseTF=nTag=ms_AllForI=0ToctDs:ctD(I).Visible=TF:NextEndIfCasems_GuiDao'轨道IfIndex<=ctDsThenctD(Index).GuiDao=NotctD(Index).GuiDaoElseTF=nTag=ms_AllForI=0ToctDs:ctD(I).GuiDao=TF:NextEndIfEndSelectPicture1.ClsCallRun1EndSubPrivateSubAddCircle(nNameAsString,nFatherAsString,rAsLong,aAsSingle,eAsSingle,VAsSingle,_OptionalSeAsLong=255,OptionalJiaoAsSingle,OptionalIsHuiAsBoolean)'添加一个天体，参数依次是：'名称，父天体名称，天体半径，轨道长半轴，轨道偏心率，运动角速度，天体颜色，初始角度，彗星否DimIAsLong,JAsLonga=a*100'半径以100像素为标准ctDs=ctDs+1:ReDimPreservectD(ctDs)'设置父天体编号ForI=0ToctDs-1IfLCase(ctD(I).Cap)=LCase(nFather)ThenctD(ctDs).Father=I:ExitForNextctD(ctDs).Cap=nName:ctD(ctDs).r=r:ctD(ctDs).a=actD(ctDs).c=a*e:ctD(ctDs).b=Sqr(a八2-ctD(ctDs).c八2)ctD(ctDs).IsHui=IsHui:ctD(ctDs).V=V:ctD(ctDs).Se=SectD(ctDs).xUp=0:ctD(ctDs).yUp=0:ctD(ctDs).Visible=TruectD(ctDs).GuiDao=TrueRandomizeIfJiao=0ThenctD(ctDs).Jiao=Rnd*ctP*2ElsectD(ctDs).Jiao=JiaoEndSubPrivateFunctionKjAddZu(Kj,ZuAsVariant,ByValCheckStrAsString,OptionalSameStrAsString)'添加一个数组菜单，并勾选标题为CheckStr的条目DimIAsLong,JAsLong,nCapAsStringIfLeft(CheckStr,1)="."ThenCheckStr="0"&CheckStrForI=LBound(Zu)ToUBound(Zu)nCap=Zu(I)IfLeft(nCap,1)="."ThennCap="0"&nCapIfnCap="-"ThenJ=KjAdd(Kj,nCap)ElseJ=KjAdd(Kj,nCap&SameStr)'IfLCase(CheckStr)=LCase(nCap)ThenKj(J).Checked=TrueIfVal(CheckStr)=Val(nCap)ThenKj(J).Checked=TrueNextEndFunctionPrivateFunctionKjAdd(Kj,nCapAsString,OptionalnTagAsString,OptionalnNoteAsString)AsLong'为数组控件添加一个成员，返回新添加的成员序号DimIAsLongI=Kj.Count-1IfKj(I).Caption<>""ThenI=I+1:LoadKj(I)OnErrorResumeNextKj(I).Checked=FalseKj(I).Caption=nCapKj(I).Tag=nTagKj(I).ToolTipText=nNoteKj(I).Visible=TrueKjAdd=IEndFunctionPrivateFunctionKjCls(Kj)AsLong'卸载数组控件的所有成员(0号除外)DimIAsLongForI=Kj.Count-1To1Step-1UnloadKj(I)NextOnErrorResumeNextKj(0).Caption=""Kj(0).Checked=FalseEndFunctionPrivateFunctionCapToNum(nCapAsString)AsLong'返回名称为nCap的天体编号DimIAsLongForI=0ToctDsIfLCase(ctD(I).Cap)=LCase(nCap)ThenCapToNum=I:ExitFunctionNextCapToNum=-1EndFunctionPrivateFunctionJi(ByValDAsLong)AsLong'返回天体级别(编号为D)DoIfctD(D).Father=0ThenExitDoD=ctD(D).Father:Ji=Ji+1LoopEndFunctionPrivateSubTimer1_Timer()Run1TrueEndSubPrivateSubRun1(OptionalnRunAsBoolean,OptionalUnRunAsBoolean)'显示一次运行的瞬时状态DimwBAsSingle,hBAsSingle,XAsSingle,YAsSingle,ZuY()AsLongDimIAsLong,TAsLong,SeAsLong,rAsSingleDimCenXAsSingle,CenYAsSingle,InDAsBoolean,InD1AsBoolean'计算天体瞬时位置：相对与父天体的角度ForI=0ToctDsIfnRunThenIfUnRunThenX=ctD(I).Jiao-ctD(I).V*ctVElseX=ctD(I).Jiao+ctD(I).V*ctV'保证数值在0到ctP*2的范围内IfX>ctP*2ThenX=X-ctP*2IfX<0ThenX=X+ctP*2ctD(I).Jiao=XEndIf'IfI=CapToNum("地球")ThenMe.Caption=ctD(I).Jiao/ctP*180'调试代码****ctD(I).X=ctBi*(ctD(I).a*Sin(ctD(I).Jiao)+ctD(I).c)ctD(I).Y=ctBi*ctSeeBi*(ctD(I).b*Cos(ctD(I).Jiao))'加上父天体的位置ctD(I).X=ctD(I).X+ctD(ctD(I).Father).X:ctD(I).Y=ctD(I).Y+ctD(ctD(I).Father).YNext'移位参照系CenX=ctD(ctCenter).X:CenY=ctD(ctCenter).Y'中心天体位置ForI=0ToctDsctD(I).X=CenX-ctD(I).X:ctD(I).Y=CenY-ctD(I).YNextSortYZuY'将天体按Y坐标排序，数组ZuY()返回排序后的天体序号Picture1.Font.Size=9:Picture1.ForeColor=&HFFFFFFwB=Picture1.ScaleWidth*0.5-ctBW:hB=Picture1.ScaleHeight*0.5-ctBW'可视区大小IfNotctTrackThenPicture1.Cls'保留轨迹，不擦除上次图像IfctBW>0ThenPicture1.Line(-wB,-hB)-(wB,hB),,B可见区方框，调试代码****ForT=0ToctDs'按天体Y坐标依次画出各天体I=ZuY(T)'天体实际编号X=ctD(I).X:Y=ctD(I).Y:r=ctBi*ctD(I).rIfr<2Thenr=2'画一个天体CallSubGuiDao(I)'画I的卫星轨道：上半部分InD=Not(X+r<-wBOrX-r>wBOrY+r<-hBOrY-r>hB)'是否在可见区内IfctD(I).VisibleAndInDThenIfctD(I).IsHuiThenTailI,X,Y'画彗尾Picture1.FillColor=ctD(I).Se:Picture1.FillStyle=0'打开填充Picture1.Circle(X,Y),r,0 '画天体Picture1.FillStyle=1 '关闭填充EndIfCallSubGuiDao(I,True)'画I的卫星轨道：下半部分'显示天体名称IfctD(I).ShowCapThenIfI=0ThenShowStrwB,hB,ctD(I).Cap,X,Y-Picture1.TextHeight("A")*0.5,True,0ElseShowStrwB,hB,ctD(I).Cap,X,Y+r+3,TrueEndIfEndIf'画运动轨迹：上一个点和当前点的连线：有一个在可见区内IfctTrackThenInD1=Not(ctD(I).xUp+r<-wBOrctD(I).xUp-r>wBOrctD(I).yUp+r<-hBOrctD(I).yUp-r>hB)If(InDOrInD1)AndctD(I).xUp<>0AndctD(I).yUp<>0ThenIfctBi<1ThenPicture1.DrawWidth=1ElsePicture1.DrawWidth=ctBi*2Picturel.Line(X,Y)-(ctD(I).xUp,ctD(I).yUp),ctD(I).SePicture1.DrawWidth=1EndIfEndIf'记忆上次位置ctD(I).xUp=X:ctD(I).yUp=YNextEndSubPrivateSubTail(IAsLong,XAsSingle,YAsSingle)'画天体I的彗尾Dimx0AsSingle,y0AsSingle,SAsSingleDimx1AsSingle,y1AsSingle,JAsSingle'无压缩时的位置x0=ctD(I).a*Sin(ctD(I).Jiao):y0=ctD(I).b*Cos(ctD(I).Jiao)J=ctBi*Sqr((x0+ctD(I).c)A2+y0八2) '与焦点(即：父天体)距离S=ctBi*(ctD(I).a-ctD(I).c)A2/J-(ctD(I).a-ctD(I).c)/5'彗发长度：近日距离4/5IfS<0ThenExitSubS=S*ctBiIfS>Picture1.ScaleWidthThenS=Picture1.ScaleWidthx1=ctD(ctD(I).Father).X:y1=ctD(ctD(I).Father).Y'父天体位置x1=S/J*(X-x1):y1=S/J*(Y-y1)Picture1.DrawMode=14:Picture1.DrawWidth=ctD(I).r*3*ctBi+1Picture1.Line(X,Y)-Step(x1,y1),&H999999Picture1.Line(X,Y)-Step(x1,y1),&H999999Picture1.DrawWidth=1:Picture1.DrawMode=13EndSubPrivateSubShowStr(wBAsSingle,hBAsSingle,nStrAsString,ByValXAsSingle,ByValYAsSingle,OptionalCenLRAsBoolean,OptionalSeAsLong=T)'显示字符wB,hB:可见区边界CenLR=T：左右居中DimWAsSingle,HAsSingle,nSeAsLongW=Picturel.TextWidth(nStr):H=Picturel.TextHeight(nStr)IfCenLRThenX=X-W*0.5IfX<-wB-WOrX>wBOrY<-hB-HOrY>hBThenExitSubPicturel.CurrentX=X:Picturel.CurrentY=Y:Picturel.PrintnStrIfSe=-1ThenExitSubnSe=Picturel.ForeColor:Picturel.ForeColor=SePicturel.CurrentX=X+1:Picturel.CurrentY=Y+1Picturel.PrintnStrPicturel.ForeColor=nSeEndSubPrivateSubSortY(ZuY()AsLong)'将天体按Y坐标排序，数组ZuY()返回排序后的天体序号DimIAsLong,JAsLong,KAsLong,SAsLong,y1AsSingleDimY()AsSingleReDimY(0ToctDs)'Y()用于视角为0的情况ForI=0ToctDsIfctSeeBi=0ThenIfctD(I).Jiao>ctP*0.5AndctD(I).Jiao<ctP*1.5ThenY(I)=ctD(I).bElseY(I)=-ctD(I).bEndIfY(I)=Y(I)+Y(ctD(I).Father)'加上父天体的Y坐标ElseY(I)=ctD(I).YEndIfNextReDimZuY(0ToctDs)ZuY(0)=0ForI=1ToctDsy1=Y(I)ForJ=0ToI-1I