MakeClothes_ Making a Simple Dress _ Makehuman

15/7/2014 MakeClothes: Making a simple dress | Makehuman

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MakeClothes:Makingasimpledress

Makingasimpledress

Startwithanemptysceneandaddacharacter.Sincedressesaremainlywornbywomen,weselectthecharactertypeAverageFemale.Adressistypicallyattachedtothetightsandskirthelpers,soweneedtoloadaHumanWithHelpers.Ahumanmeshappearsintheviewport.

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Nowmodelthedress,usingthehumanmeshasareference.GivethedressmeshtheobjectnameDress.Thisisimportant,becausetheobjectnamewilldeterminethefilepathsaswellastheclothing'snameinMakeHuman.



Assignamaterialtothedress.Wewillgoforasimple,monochromaticmaterialwithouttextures.Againwemustchooseanameforthematerial.Thenamewillappearinthemhmatfilethatdescribestheclothing'smaterialproperties.

NotethattherenderenginemustbesettoBlenderInternaltocreatethematerial.MakeClothesdoesnotworkwiththeCyclesrenderer.



Beforewecanassociatethedressmeshwiththehumanmesh,itmustfirstbeUVunwrapped.Tothisend,createseamsatsuitableedges.

UVunwrapthemesh.Atthispointwecouldpaintatextureforthedress,butforoursimplemonochromaticmaterialthisisnotnecessary.



Finally,wearereadytocreatetheclothes.PresstheMakeClothesbutton.

Sincetheprogramcantakequiteawhiletocomplete,wecanmonitorprogressintheterminal/doswindow.Foreverytenthvertex,thefollowinginformationisprintedintheterminal:

ClothingvertexnumberClosesthumanvertexinsamevertexgroup.Distancebetweenclothesvertexandhumanmeshface.



VertexgroupClothesvertexgroupindexHumanvertexgroupindex

Theoutputfilesarealsolistedintheterminalwindow.

MakeClothescreatesanewfoldernamedliketheclothingname(inthiscasedress),withthreefilesinit:

dress.mhclo:Describestheassociatebetweenclothingandhumanvertices.dress.obj:Describestheclothesmesh.Thisisastandard.objfilewhichcanbeimportedintomostpackages.dress.mhmat:Describesthematerialproperties.

Bydefault,thedressfolderiscreatedinthefollowingdirectory:

OnWindows:Documents\makehuman\data\clothesOnLinux:~\makehuman\data\clothes



Ifthenewclothingissaveinthedefaultdirectory,MakeHumanshouldfinditautomatically.OpenMakeHumanandgototheGeometries>Clothestab.Anewbuttonnameddressshouldappearintherighthandpanel.Pressit,andthecharacteriswearingthedressyoujustcreated.



Thesizeandshapeofthedressadjustsitselfautomaticallywhenthecharacterslidersaremoved.

ModellingclothesstartingfromhelpergeometryItissometimesconvenienttousethehelpergeometryasastartingpointformodellinginfact,thisishowthedressinthistutorialwasmodelled.However,therearesomepitfalls.



Entereditmodeandselectthetightsandskirthelpers.Thisismosteasilydoneinthematerialstab.PressShiftDtoduplicatetheselection,andPtoseparatetheduplicatedgeometryintoaseparateobject.



RenamethenewmeshtoDressandmoveittoaseparatelayer.ThemeshtypeisstillHuman,sochangethattoClothing.

Deletethetightsverticesbelowthewaist,andsnapthetightswaisttotheskirtwaist.Thewaistnowconsistsofpairsofverticesatidenticallocations.Removedoublestojointheupperandlowerparts.



Thedressnowconsistsofacontiguousmesh,butthematerialsarestillthoseofthehuman.UnlinkthehumanmaterialsandcreatethebluishDressmaterial,aswedidinthefirstpartabove.

WenowproceedtopresstheMakeClothesbutton,butthereisasurprise.MakeClothesraisesanerror,sayingthatsomevertexbelongstothreegroups.Thishappensbecauseautomaticvertexgroupassignmentworksdifferentlyforhumansandclothes.Inaclothing,eachvertexmustbelongtoexactlyongroup,butinahumanthereisnosuchrestriction.Inparticular,theverticesalongthesymmetryplanex=0areassignedtoallthreegroups,Mid,Left,Right.



Tofixthis,ShowAutomaticVertexGroups,andpressAutoVertexGroups.SincethemeshtypeisnowsettoClothing,vertexgroupsareassignedinthecorrectfashion,andinparticulareachvertexbelongstoexactlyonegroup.

AddingatextureInthissectionwereplacethesimplemonochromaticmaterialwithatexture.



Firstcreatetheimage,e.g.usingBlender'stexturepaintmode.Savetheimageinthesamefolderastheblendfile.



AssignthetextureasanimagetextureinBlender'stexturetab.NotethatMakeClothesexpectsthattheoldBlenderInternalrendererisused,notCycles.

MakeClothesautomaticallyrecognizesthatthematerialhasatexture,andtheimageiscopiedtothedressfolderinthedata/clothesdirectory.Nexttimeyouenablethedress,ithasanontrivialtexture.



SometimesitisnecessarytorestartMakeHumanafterclotheshavebeeneditedtomakethechangesstick.Itisnotcleartomewhythisisso,andhopefullythisglitchwillgoawayinthefuture.

Othertypesoftextures,suchasnormalandspecularmaps,arecreatedinananalogousfashion.AddthemtotheBlendermaterial,andthecorrespondingtexturesareusedinMakeHuman,totheextentthatafeaturehasbeenimplemented.

HidingfacesClothesadapttothecharacter,butsometimesblotchesofskincanbevisiblethroughclothes.Theproblemisparticularlyseverefortightandlowpolyclothes,andisfurtheraggravatedbyposing.



Hereweseethatthedressdoesnotquitecoverafatwomansbellyonthesides.



Oursolutiontothisproblemistohidefacesinthehumanmeshthatarehiddenbyclothes.Thisisnotaperfactsolution,forseveralreasons:

Itdoesnotworkformultipleclothesstackeduponeachother.Hiddenfacesmayinfactbevisiblefromothercameraangles.Itmakesitimpossibletoundressanexportedcharacterinanotherapplication,sincetheunderlyingbodyisnotthere.

Imperfactasitis,removinghiddenfacesdoesfixsomeofthemostblatantproblems.

InBlender,selectthehumanverticesthatarecoveredbythedress,andassignthemtotheDeletevertexgroupsthatwasautomaticallycreated.Notethatwhenavertexisremoved,soareallfacesthatitbelongsto.WemustthereforebecarefulnottoassigntomanyverticesclosetoclothesboundarytotheDeletegroup.



WithhiddenverticesassignedtotheDeletegroup,pressMakeClothes.InMakeHuman,theblotchofskinpokingthroughtheskirtisgone.



TheoptionHidefacesunderclothescontrolsthevisibilityofhiddenfaces.Weseethatitgreatlyimprovestheviewfrombehind,buttherearestillsomeproblemsatthetopofthethighs.



ThesituationcanbeimprovedbytweakingtheDeletevertexgroup.ThepictureaboveshowsthebestIcoulddo.Therearestillsomeproblemsatthebottomofthedress,bothwithskinpokingthroughtheskirt,andwithvisiblefacesbeingdeleted.Insituationslikethis,itisprobablynecessarytoeditthemesh,movingthebottomoftheskirtawayfromthebody.



Theclothesdonotupdatewhileasliderisbeingdragged,butonlywhenitisreleased.Wecanthenseehowhiddensurfaceremovalworks.

CreatinganthumbnailSofarthedresshasappearedwiththedefaultthumbnailintheclothesfilebrowser,i.e.asafacewithaquestionmark.



Movethehumantoahiddenlayerandarrangethecameraandlights.Settherenderresolutionto128x128and100%.Changethecameratoorthographicandadjustthescalesothedressfillsthecameraview.

Renderandsavetheimageasapngfilewiththenamedress.thumbinthesamefolderastheotherfiles.WhenIwrotethisdocument,Blenderautomaticallychangedthefilenametodress.thumb.pnginthefileselector,buttheextra.pngsuffixwasnotactuallyincludedinthefilename.Notethatthethumbnailsuffixis.thumbthefileDress.pngisthediffusetexture.



Hereisthecontentofthedressfolder.dress.npzisacompiled.objfile.MakeClothesautomaticallydeletes.npzfilesaftersaving.objfiles,topreventupdateproblems.

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