计算机图形学assignment

ASSIGNMENT3:VirtualTracingBall

Introduction

ThegoalofthisassignmentistolearnmoreabouthowweseetheworldusingOpenGL.

virtual

Whenwejumpintoa3Dworld,itisusualtocontrolourviewsbysimulatinga

tracingball.Naturallywecanusemousetocontroltherotatationofobjects.Tohelpyouwiththistask,youwillbeusingOpenGLandGLUT.Wewillalsoprovideyouwithasamplecode.Butitissobasicthatcan'tmeeteveryneedsofthisassignment.Youhavetoupdatethecodetocreatesomethingofyourown.

Inthisassignment,youneedtodisplaya .Itisnoteasytoimaginehowitlookslike.SoIsuggestyoufindmoreinfomationaboutDodecahedronfromWikipedia.

SampleCode

ZERO

YoucanfindlotsofcodesthatcanfinishthisassignmentfromtheInternet.NotethatplagiarizingisZEROTOLERANCEinthisclass.Itwillbeoktomakethiscodeoneofyour

references,butDONOTjustcopyandpaste.Oncedetected,youcanonlygetthismayaffectyourfinalscore.

Herearesomecodesthatyoucanreferto:

and

课后案例10：立方体旋转程序

课后案例11：用虚拟跟踪球实现立方体旋转程序课后案例12：观察者漫游程序

Itishighlyrecommendedtocreateyourowntoysbasedonthesecodes.It'seasyandofgreatfun.

Implementation

Thisprojectissomehowchallenging,right?That'strue.Butonceyouovercomeit,thedoortotheworldofopenglopensforyou.Herearesometipsthatmaybeuseful:

How

youarrangethedata

correctlymatters.

Displayingthedodecahedron

Wewillgiveyouthedataofthedodecahedron.Youmayfinditamessatthefirstglance.Butafterdrawingsomeshapesonapaper,youwillgetNewton'sapple.

doesn'tmatter.

HowtoinitializetheGLUT?

The

The

functionofyourmouse.

Callback

Callback

functionforyoutodrawtheshapes.

HowtodrawthePolygonMesh?

Requirements

Drawthedodecahedronbyyourself(Notethatthe12surfacesshouldhavedifferentcolorssothatTAscandirectlyunderstandyourwork)Implementthefeaturesofavirtualtracingball,thatis:

rotation

Usetheleftbuttonofyourmousetocontrolthe

button.(Onlywhentheleftbuttonispressedcanthe

dodecahedronberotated)

Procedure:Pressleftbutton->movethemouse->releasetheleft

Usetherightbuttonofyourmousetocontrolthe

button.(Onlywhentherightbuttonispressedcanthe

dodecahedronbetranslated)

translation

Procedure:Pressrightbutton->movethemouse->releasetheright

Createamenutoswitchthemodesofdisplaystheobject.

surfaces(多边体面绘制)

withframes(线框图绘制)

OneisdrawingwithTheotherisdrawing

Ifyouhavedifficultiesonthisproject.Pleaseturntoyourroommates,classmatesorboy/girlfriend.OrcometovisittheTAsintheirofficehours.NotethatTAisnottheguyhelpyoufinishyourhomework.

DodecahedronData

Thepostionandrelationoftheverticeareasfollowed:

1.214124

0.000000

1.589309

0.375185

1.154701

1.589309

-0.982247

0.713644

1.589309

-0.982247

-0.713644

1.589309

0.375185

-1.154701

1.589309

1.964494

0.000000

0.375185

0.607062

1.868345

0.375185

-1.589309

1.154701

0.375185

-1.589309

-1.154701

0.375185

0.607062

-1.868345

0.375185

1.589309

1.154701

-0.375185

-0.607062

1.868345

-0.375185

-1.964494

0.000000

-0.375185

-0.607062

-1.868345

-0.375185

1.589309

-1.154701

-0.375185

0.982247

0.713644

-1.589309

-0.375185

1.154701

-1.589309

-1.214124

0.000000

-1.589309

-0.375185

-1.154701

-1.589309

0.982247

-0.713644

-1.589309

50123

4

50510

6

1

51611

7

2

52712

8

3

53813

9

4

54914

5

0

5

15

10

5

14

19

5

16

11

6

10

15

5

17

12

7

11

16

5

18

13

8

12

17

5

19

14

9

13

18

5

19

18

171615

OFF

201230

Line1:Filename

Line2:VertexCountSurfaceCountEdgeCountLine3-22:Thex,y,zforeachvertex

Line23-34:5v1v2v3v4v5(Eachsurfacehas5vertice,thisistheindexesofthem.Notetheindexstartedfrom0)

SubmitingList

Hereisthelistoffilesyoushouldsumbitforgrading

clean

ofyourproject(Makesureyouexecutethesubmiting,wedon'tneedthosetemporaryfiles)

commandbefore

ofyourproject(ItmeansthatTAscanseeyourhomeworkafterclickingtheexefile)

ofyourproject(Brieflydescribewhatyouhavedone.Andifyourprogramneedtobeexecutedwithsomeothersteps,pleasetellusinthisDocument.Notethatonly fileisacceptable)

Pleasecompressthisfilestogetazipfileandmailittothemailboxforsubmitinghomework.Youcanfindtheaddressonthecoursehomepage.

Grading

Detailinformationisonthecoursehomepage.Pleasecheckitoutbeforesubmittingyourhomework.

FAQs

CanIusedifferentwaystocontroltheobject,suchaskeyboard?

Sureyoucan,