Intro To Surface Prototyping for Industrial Design

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1、IntroToSurfacePrototypingforIndustrialDesignAnIntroductiontoPseudo-PolygonalSurfacePrototypingforIndustrialDesign.AMethodologyforTrulyInteractiveDesignConceptDevelopmentinanExisting3DComputerModelingEnvironment.StevenC.Beck,ImageAnalysisFacility,UniversityofIowa,July1

2、997,Copyright(c)July1997TableofContents●ConceptOverview(Adescriptionofhowthisconceptcameaboutandsomemotivationforfurtherexploration)●PartI:PrototypingAnAutomobileExteriorUsingPseudo-PolygonalSurfaces(TheactualPPSPtutorial)●PartII:CreatingUsefulCurvesandSurfacesfromaPs

3、eudo-PolygonalPrototype(Anexampleforfutherdevelopment)ConceptOverviewAtsomepointinthedevelopmentofanydesignthereexistsadiscoveryphasewherethesize,shape,proportions,andaestheticsofaconceptareexplored.Thisdiscoveryphaserequirestoolsthatallowaconcepttobeexploredquicklyan

4、dfreely.Pencilandpaperareexcellenttoolstouseduringthisphasebecausetheyallowcomplexshapestobeimpliedquicklywithafewscribbles.Additionalscribblesandsomeshadingcaneitherrefineasketchorchangeitcompletely.Malleablematerialslikeclayarealsoexcellenttoolstouseduringthediscove

5、ryphasebecauseoftheintuitivewayinwhichtheycanbeshaped.Thesetraditionaltoolsallowdesignerstoquicklyvisualizewhereconceptsareheading,provideconstantfeedback,andallowforeasymodificationastheworkprogresses.Traditionaldesigntoolsmakeitreasonabletopursuemanyconceptvariation

6、sbecausetheroughdraftscanbecreatedwithoutexpendingsignificantamountsoftimeandeffort.Iwouldarguethattraditionalmethodsofcreating3dcomputergeometryisneitherquick,easy,orintuitive.Veterancomputermodelersrarelybeginmodelinguntiladesign'sdirectionisclearbecausecreatingusef

7、ulandrepresentative3dgeometryrequiresagreatdealoftimeandeffort.Evenafterthecomputermodeliscreated,itisoftenquestionablewhetherthemodeltrulyrepresentsthedesigner'sintentions.Thisisunfortunatebecausetheresourcesexpendedtocreatethecomputermodelmustnowbeweighedagainstanyd

8、eviationsintheproposeddesign.Asimpressiveandusefulascurrent3dmodelingenvironmentsare,traditionaluseoftheirtoolsistooabstract