Tutorial - A puzzle in a nutshell

Nesing - Sybren - App Helmond

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Mosaizer Pro Tutorial A puzzle in a nutshell Here you learn how to apply a puzzle mask and remake an existing picture into a puzzle mosaic. We will also show how a 3D puzzle effect can be created. Finally, we will demonstrate how the alpha masks can be used to alternately rotate and create completely different pattern. A puzzle in a nutshell About puzzle masks Puzzle masks are just ordinary alpha masks in the shape of a puzzle. In general a puzzle mask is shaped as a (puzzle) pattern that can be used seamlessly as if the adjacent tiles were connected. Like a real life jig‐saw puzzle. The concept of alpha masks is explained in the tutorial “Working with brush masks”. In short: a puzzle mask is usually square and only contains black or white pixels. When this mask is used on a tile, the corresponding white pixels are transparent (tile is seen), and the black pixels are opaque (source or background picture is visible). Typical puzzle masks are shown below. Requirements A source picture and a puzzle mask. The choice of puzzle mask is personal, but need careful attention. When a real puzzle effect wants to be created, the puzzle mask should be shaped in such a way that north and south and east and west should seamlessly match. The puzzle masks provided by Mosaizer Pro are a good starting point. The steps to make a puzzle Step 1 ...

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Publié par	Nesing
Nombre de lectures	27
Langue	Español

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MosaizerProTutorialApuzzleinanutshell

Hereyoulearnhowtoapplyapuzzlemaskandremakeanexistingpictureintoapuzzlemosaic.Wewillalsoshowhowa3Dpuzzleeffectcanbecreated.Finally,wewilldemonstratehowthealphamaskscanbeusedtoalternatelyrotateandcreatecompletelydifferentpattern.

ApuzzleinanutshellAboutpuzzlemasksPuzzlemasksarejustordinaryalphamasksintheshapeofapuzzle.Ingeneralapuzzlemaskisshapedasa(puzzle)patternthatcanbeusedseamlesslyasiftheadjacenttileswereconnected.Likeareallifejig‐sawpuzzle.Theconceptofalphamasksisexplainedinthetutorial“Workingwithbrushmasks”.Inshort:apuzzlemaskisusuallysquareandonlycontainsblackorwhitepixels.Whenthismaskisusedonatile,thecorrespondingwhitepixelsaretransparent(tileisseen),andtheblackpixelsareopaque(sourceorbackgroundpictureisvisible).Typicalpuzzlemasksareshownbelow.

RequirementsAsourcepictureandapuzzlemask.Thechoiceofpuzzlemaskispersonal,butneedcarefulattention.Whenarealpuzzleeffectwantstobecreated,thepuzzlemaskshouldbeshapedinsuchawaythatnorthandsouthandeastandwestshouldseamlesslymatch.ThepuzzlemasksprovidedbyMosaizerProareagoodstartingpoint.ThestepstomakeapuzzleStep1:loadthemosaizerandsourcepicturesTofirstloadthemosaizerpictureseemstobeastrangefirststepcomparedwithothertutorials.Thereasonisobviousenough:wewillfirstneedtomakesmaller(puzzle)piecesfromthesourcepicture.WeusetheMosaizertoolforthis.Themosaizerpicturecanbeloadedvia‘File|Openmosaizerpicture’orincaseanewpictureisused:‘File|Newmosaizerpicture”.Alsoloadthesourcepicturewiththesamepictureasthemosaizerpicture.Theselectedpictureisseeninthetab‘Mosaizer’onthetop‐right.Thenwesetthevalueofthesub‐cells.Weselectacellsizeof60x60px(viatab‘Mosaizer’ontheleft).Adetailedexplanationisgiveninthetutorial“Makeamosaizedpicture”.Step2:mosaizethesourcepicturePresstheMosaize!Button.Wehaveselectedasizeof60x60becausethesourcepictureisprettylarge(oursourcepictureoftheBigBenis945x945pxinsize),sonowwehave225differentpiecesofthepuzzleavailableforournextsteps.

Step3:preparethemaskLoadthepuzzlemask.ThisisdoneviathetabMasker|Alphamasks.Weusetheb_Puzzle4.jpgmask.IfthemaskisnotyetavailableinMosaizer,youneedtoaddthemasktothedropdownlistfirst.OpenthemaskmanagingwindowviaTools|SettingsManager/MasksandthenpressthebuttonAddalphamask.Navigatetothefolderinwhichthemaskislocated,selectthemaskandpresstheEnterbutton.UsethedefaultvaluesfortheF‐factors(usuallyF1is1,theothersare0).Tomakesurethemaskisloadedpermanently,alsopressthebuttonsSavechangesandReload/restorealldata.Thefirstbuttonmakessurethesettingsarestoredintheprogram,thesecondupdatesalldrop‐downboxestomakethemaskavailablerightaway.Next,changethebackgroundcolortoblackandtickthecheckboxColoredcanvas.Thiswillhidethesourcepictureandcolorsthecanvasfullyblackbeforeanytileisput.Thiscoloreffectivelycreatesablackborder‐linebetweenthepuzzlepieces.Infact,itfillsthegapbetweenadjacentmaskedtilesbecausethebackgroundthenbecomesvisible.Step4:makeyourfirstpuzzleandtunethemaskparameterF1PresstheCreatebutton.Theresultisdisappointing!Thepuzzlemaskisclearlyoutlined,butnomatchbetweenadjacentpuzzlepiecesiscreated.ItdemonstratestheimportanceoftheF1valueofthemask(i.e.thesizefactor).Toexplainthis,wewillshowtheeffectoftheF1factorontheresult.TheleftpictureshowstheresultforF1=1.Thepictureontherightshowswhathappensisthevalueistoohigh(inthiscaseF1=1.25).ThemiddlepictureshowsthefinalresultoftheF1‐parametertuning(soF1=1.18).

Left:F1=1Middle:F1=1.18ThemaskparametersF1,F3andF4mustnowbetuned.Thisisnotsostraightforwardtodo:eachmaskisuniqueinsizeandcoverage.Forexample:ourchosenpuzzlemaskappearstorequireapproximately18%percentoverlaptomakesurethattheadjacentcellsareputnexttothepreviousones.Thisvalueisfoundbytrialanderror.ForthismasktheF1valueis

Right:F1=1.25

therefore1.18.TheF3factorindicatesifamaskshouldberotatedeveryothertile(no=0),andtheF4parameterindicatesifwealwayswanttostartwithacoloredbackground(or:thesourcepictureisnotvisible).WealsosettheF4valueto0.Information1:thereisaquickerwaytodirectlygotothemaskmanagingwindow:viaMasker/Shortcuttomaskmanager.Thecorrecttabisthenalreadyselected.TheotheroptionofthemenuentryMaskeristoquicklyResetallmasks(infactemptyallmasks).Information2:WhenpressingthebuttonShowmaskinfothevaluefortheF1‐4parametersisexplained.Pressagainandtheexplanationdisappears.

Whenallvaluesarecorrectlyset,theresultlooksmuchbetter.

NowwiththecorrectF1value(1.18).ThedetailinthegreenrectangleisshownontherightStep5:playtime!Thefinalresultlooksimpressiveenoughbutwecannowplaywiththecontrolsabit.Wewillchangethecolorofthebackground,theshapeofthepuzzleandhavethebackgroundimageintact(nocoloredbackground).Theresultsareasfollows:

Whitebackground

BluebackgroundBlackbackground

Nobackgroundcolor

Thislastvariation(‘nobackgroundcolor’)isshownonthefontpageofthistutorial.EachofthedifferentmaskscanhaveadifferentvalueforF1.Fromlefttoright:Puzzle4(F1=1.18),Escher3(F1=1.14),Hexagon(F1=1.14)andPuzzle3(F1=1.15).

Step7:arotatingpuzzlemaskMostmasksarejustrepeatedendlessly,butamaskcanalsoberotated(90degreesonly).Thiswaymorevariationisgenerated.However,onlyonemaskcanbeused.So,onlyonetypeofpuzzlepiececanbesimulated.Weuseaspeciallypreparedmask(m_Puzzle2.jpg)thatcomeswithMosaizerPro.TheF1valueofthismaskis1.36,F3is1andF4isalso1.Thismeansthateveryothercellthemaskisrotated(F3=1)andthatthebackgroundisalwayshidden(F4=1).Usthesettingsaswehaveexplaineduntilstep5,andsimplychangethemask(so:thebackgroundcolorisstillblack).Thisistheresult.

ThedetailinthelittlebluesquareisshownontherightSometipstotunetheF1factor:‐usetheshortcuttothemaskmanager(Masker/Shortcuttomaskmanager)‐onlychangetheF1parameterandthenpressUpdate‐keepthiswindowopen(justmoveaside)‐usethepreviewoptiontoquicklyassesstheimpactofthechanges(pressPreviewinsteadofCreate)‐startwithF1=1andworkyourwayupinstepsof0.1,andthenfurtherrefineinstepsof0.05oreven0.01ifyou’regettingclosertothebestvalue‐finallysavealltheresultsbypressingSavechangesandRestore/reloadalldata.

Step8:analmostrealistic3DpuzzleWewillnowcombinethe3Dshadoweffectwiththepuzzlemask.Theexpectedresultwillbea‘true’3Deffectofapuzzleofrandomlyplacedpieces.Thesearethesettingstoprepare:‐mosaizercellsize96x96px(tabMosaizer)tohavelargepiecesavailable‐backgroundColoredcanvasissettowhite(tabSpecial)‐randomPatternandBuildarechecked(‘on’)

‐randomAmountissettominimumvalue(sliderfullytotheleft)‐3DeffectShadowDepthto10%,Intensityto70%andsize2pxsouthandeast‐Sizeofthecellalsosetto96px(tabSizeandshape)Thenrecreatethemosaizerlibrary(becausethecellsizehasbeenchanged),bypressingtheMosaize!buttonagain.WaituntilthelibraryisreadyandthenpresstheCreatebuttonandseetheeffects.Thereasontosettheshadowthiswayistocreatea’thickness’effectofeachpuzzlepiece.Theshadowisratherblack,shortandintense.

Finallytrythesevariations(fromtoptobottom):increasetherandomAmountofpieces;increaseoncemore;andusemaskrotationbetween‐90and90degrees(viatabQuicksettings/Othersettings).

Ascanbeseenfromtherotatedpieces,somepiecesarecut.Thisisbecauserotatingamaskwillcutoffthepartthatliesbeyondthecircleofrotationoftheoriginalsize.Tosuccessfullyrotateapuzzlemask,simplyaddanextrarimofblacktothemask.Whenthemaskisrotatedtheextraspacewillnowallowforshowingthefullcontentofthemask.YouneedtotunetheF1parameteroncemoreofcourse.MosaizerPro©APPHelmondFebruary2009www.mosaizer.com

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