山东大学计算机图形学2010试卷A(含答案)

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1、……………………………………密………………………封………………………线…………………………………09-10学年2学期第页共页题号一二三四五六七八九十总分总分人得分得分阅卷人PartI.MultipleChoiceQuestions(5pointseach)1.Inasyntheticcameramodel,whichofthefollowingis(are)correct?___d___a)Theimageplaneisbehindthecenterofprojection(COP).b)Specificationsoftheobject

2、sandthevieweraredependent.c)Theimageofanobjectisflippedrelativetotheobject.d)Theprojectorsmeetatthecenterofprojection(COP).2.Giveanorderofthefollowingphasesaccordingtotherenderingpipeline_cebda__a)FragmentProcessorb)Clipperc)VertexProcessord)Rasterizere)PrimitiveAssembler

3、3.Whichphase(aslistedabove)doeseachofthefollowingoperationsbelongto?___c__Toconvertobjectrepresentationsfromonecoordinatesystemtoanother___d__Togenerateinsidefragmentsforapolygonandcalculatetheircolors___b__Todeterminewhichobjectsarewithintheviewvolume___a__Todeterminethe

4、colorofthecorrespondingpixelintheframebuffer4.Whichofthefollowingstatementsregardingaffinetransformationsis(are)correct?____abd___a)Twotranslationsarecommutative.b)Tworotationsaboutthesameaxisarecommutative.c)Ascalingandarotationarecommutatived)Ageneralrotationaboutanarbi

5、trarylinecanbedonewithtranslationsandrotationsaroundtheaxes.5.ChoosetwoOpenGLsentencesfromthefollowfourcandidatestotransformthecamerafromtheoriginalpositiontothedestinationposition(DestnationPostion)glMatrixMode(GL_MODELVIEW)glLoadIdentity();_________a________________c___

6、____a)glTranslatef(0.0,0.0,-d);//d>0b)glTranslatef(0.0,0.0,d);//d>0c)glRotatef(-90.0,0.0,1.0,0.0);d)glRotatef(90.0,0.0,1.0,0.0);6.Locallightingcomputesthecolororshadeofeachobjectindependently.Soitcan’tdealwithsituationssuchas_______acd________a)Someobjectsareblockedfromth

7、elight.b)Realtimeillumination.c)Lightcanreflectfromobjecttoobject.d)Someobjectsmightbetranslucent.得分阅卷人PartIIFreeFormQuestions(10pointseach)1.Giventhefollowingcodefragment:学院专业级学号姓名山东大学计算机图形学课程试卷A第1页共4页glBegin(GL_TRIANGLE_STRIP)glVertex3fv(a);glVertex3fv(b);glVertex3fv(c)

8、;glVertex3fv(d);glVertex3fv(e);glVertex3fv(b);glVertex3fv(f);glEnd();……………………………………密………………………封……