lesson-4-GC lesson 4- Making Drawing Economincal

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1、GenerativeComponents101Lesson4:MakingdrawingeconomicalYoumeanwe’vebeendoingitthehardway?Morelikethelongway.Beforeweweredrawingeverylineandshapeandnotreallythinkingabouthowwecouldhaveshortenedtheprocessbyusingvariables.Letsfirstlookatthelinefeature.Afeaturealwayshasagivensetofproperties

2、.Thusthelinefeaturealwayshastheproperties:StartpointEndPointLengthAndacirclealwayshastheproperty:RadiusLetshaveagoatusingthesepropertiestocreatenewfeatures.Thisisaneconomicalwayofworkingasitwillreduceyournumberoffeaturesoverall.Letsdrawasquare(excitingIknow!)1.Draw2pointsandaline01ByPo

3、ints.MaketheStartPoint:Point001andtheEndPoint:Point002.2.Nowwewanttodrawline02perpendiculartoline01.Previouslywewouldhavedrawnathirdpointandthenourline.Butwhatwecandoinsteadisthis:LetsplaceaCoordinateSystem>ByOriginXPointonpoint001.WecandefineourXdirectionbyselectingpoint002.Nowletscre

4、atetheFeatureLine>ByStartPointDirectionAndLengthWecoulddefineourStartPointineitheroftwowayshere1.YoucouldchoosethenewCoordinateSystemor…2.YoucouldchooseLine001andplacea”.”(fullstop)afterwards.This“.”Opensapulldownmenuwherewecanchoosepropertiesoftheline–wewanttochooseStartPoint.Doublecl

5、ickStartPointtoenterit.SoourStartPointofLine002isnowdefinedasLine001.StartPointNowwedefinethedirectionofthelineasCoordinateSystem0001.Ydirection.Rememberwedefinedthexdirectionwhenwechosepoint002onplacementofthecoordinatepoint.SowhenwechoosetheYdirectionweknowitwillbeperpendiculartoline

6、001.LastlyweneedtodefineourLength.WecandothisbychoosingLine001.LengthApplyandourlineisdrawn!Andthesameforthenextline?Yougotit!WhenyouarereadytodrawthenextlinehittheNextButtonNoticethatthe“NameofthenewFeature”changedtoline003?Nowgobacktothelineinputs(theyhaven’tchangedfromline002)andupd

7、atethem.TheStartPointofLine003isdefinedby:Line002.EndPointTheDirectionisdefinedby:CoordinateSystem0001.XdirectionThelengthisdefinedby:Line001.LengthYoucoulddothesameagainforLine004butitmightjustbeeasiertoplacethelineByPoints:TheStartPointofLine004isdefinedby:Line003.EndPointTheEndPoi