Chapter6:CreatingDrawingswithDraw
ThecolourmodelsRGBandCMYKarejusttwoofthemodelsmostusedtodefinecolours.
RGBstandsforred­green­blueandthismodelisparticularlyusefulforcoloursbeing
displayedonacomputermonitorasitcombinesthethreebasiccoloursused.CMYKstands
forCyan­Magenta ­Yellow­blackorCyan­Magenta ­Yellow­Keyandis
thecolourmodelthatbestdescribesthesubtractivecoloursusedinprinting.Selectthe
colourmodelthatcorrespondstothedesiredoutputmedium(monitororaprinter).When
exportingimagefiles,itisbesttoaskthephoto­exposureserviceinwhichcolourmodel
andformattheimageisexpected.
3. Definethecoloursbymodifyingthevaluesinthespinboxes.Entervaluesdirectly,or
clickthebuttonstochangetheexistingvalues.Theresultisshownimmediatelyinthe
lowerpreviewbox.
Ifselectingcoloursfromacolourspectrumispreferabletospecifyingthevalueswiththe
spinbuttons,clickEdit.Thisopensthecolourdialogue.Inthisdialogueitisalsopossible
tospecifythecolourintheHSVorHSB(Hue­Saturation­Value/Brightness)
model.SelectthecolourandclickOK.
4. Onceanewcolourischosen,specifywhetheritshouldreplacetheoriginalcolourorbe
definedindependently.
Note:Itisrecommendedthatonlycustom­definedcoloursbereplaced.
1. Toreplacethecolourdisplayedintheupperpreviewbox,clickModify.
2. Tosetthenewuser­definedcolour,assignanametothecolourintheNamefield,and
clickAddandOK.
Thenewcolourwillimmediatelybeaddedtothepaletteofexistingcolours;however,ifthe
dialogueisexitedbyusingtheCancelbutton,thecolourofthecurrentobjectdoesnot
change.
Nonetheless,themodificationsinthecolourpalettedoremainineffect.
Furtherinstructionsonsavingandloadingthecolourpaletteandotherpalettefilesarefound
inHelp.
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Chapter6:CreatingDrawingswithDraw
ReplacingcoloursusingtheEyedropper
InDrawandImpress,imagesinsertedinabitmapformatsuchas,GIF,JPEGandmetafile
imageslikeWMFcanhavetheircolourseditedusingtheEyedropper.Toopenthe
Eyedropperwindow,chooseTools>Eyedropper.
TheEyedroppercanreplaceselectedcoloursand,toapoint,similarcolours,withother
colours,uptofourcoloursatonetime.Ifthereplacementisnotwhatisdesiredorneeded,
reverseitwithoneclickonUndoontheStandardtoolbar.UsetheEyedroppertomatchthe
coloursofdifferentbitmapsortoredoabitmapwith,say,thecoloursofacompanylogo.
TheTransparencyattributealsoservesasacolour.Transparency,inanimagewithacolour,
canbereplacedforexample,withwhite.ThisisHelpfulwhen,forexample,theprinter
driverhasproblemswithprintingtransparentgraphics.
IftheuserwantstoproduceanimageonHTMLpagestopublishintheInternet,likethe
illustrationofaproduct,forexample,itusuallylooksbetterwhenonedoesnotseea
rectangularpicture,butratherseesonlytheillustrationoftheproductagainsttheuniform
backgroundofthewebpage.Ifthereisawhitebackgroundinthepicturebehindtheproduct,
usetheEyedroppertoreplacethecolourwhitewith“Transparent”(i.e.nocolour)andsave
and/orexporttheimageinaformatthatsupportsthetransparencyattribute(suchasGIF).
Whenusingthismethod,besurethattheillustrationoftheproductitselfdoesnotcontain
anywhiteparts,sincethesewouldalsobecometransparentjustlikethebackground.
ToreplacecolourswiththeEyedropper
1. InsertanimageinaBitmapformat(e.g.,BMP,GIF,JPG,TIG)orinametafileformatlike
WMF.Todothis,chooseInsert>PictureinDrawandImpress.
2. OpentheEyedropperwindowbychoosingTools>Eyedropper.
3. IntheEyedropperwindow,clicktheEyedroppericonintheupperleft­handcorner.The
mousepointerwillturnintoaspecialpointerwithwhichonecanindicatethecolourtobe
replacedinthecurrentdocument.Thecolourboxnexttotheeyedroppericoninthe
Eyedropperwindowdisplaysthecolourthemousepointerisrestingon.
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Chapter6:CreatingDrawingswithDraw
4. Clicktheleftmousebuttonwhenthecolourisfoundwhichistobereplaced.Thiscolour
willautomaticallyberegisteredinthefirstofthefourrowsintheEyedropperwindow.
5. Now,inthelistboxtotherightinthesamerow,selectthenewcolourwhichshould
replacetheselectedcolourinthewholebitmapimage.
6. Ifinthesameeditingsteponewantstoreplaceanothercolour,clickthecheckboxin
frontofthenextrow.Nowselecttheeyedroppericonintheupperlefthandcorneragain
andchooseanewcolour.Uptofourcolourscanbereplacedinoneeditingstep.
7. Selectthebitmapimageorthemetafileimageinwhichthecoloursaretobechanged,by
clickinginit.
8. IntheEyedropperwindowclickReplace.Iftoomanysimilarcolourswerereplaced,
undothestepusingCtrl+Zanddecreasethecolourtoleranceinthespinbutton.Then
clickReplace.
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VB.NET PDF Text Redact Library: select, redact text content from
VB.NET PDF - Redact PDF Text. Help Users to Redact PDF Text to Protect PDF Document in VB.NET. Overview. Redact PDF Text using VB.NET. Add necessary references:
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Chapter6:CreatingDrawingswithDraw
GradientsandPatternsforObjectsandBackground
Theobjectsindrawingsandpresentationsdonothavetohaveuniformcolours.Theycanalso
havecolourgradients,transparencygradients,patternsandhatchingeffects.Userscanalso
defineacolour,agradientorapatternforabackgroundthatisvisibleinallslidesofa
presentation.
DefiningGradients
Toassignapredefinedgradienttoanobject,proceedasfollows:
1. Selecttheobject.
2. FromthecontextmenuorunderFormatonthemenubar,chooseArea....
3. SelecttheGradientoption,thenmakeaselectionfromthegradientlist.
DefiningacustomcolourGradient
Beforedefininganew,customcolourgradient,savethecurrentcolourgradientlistasafile
toensurethereisabackup[saywhy?]orloadadifferentlistfromanotherfile.
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Tools Tab. Item. Name. Description. 1. Select tool. Select text and image on PDF document. 2. Hand tool. Pan around the document. Go To Tab. Item. Name. Description
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Chapter6:CreatingDrawingswithDraw
Iftheuserhasselectedanobjectandthendefinedanewgradient,thenewgradientis
immediatelyassignedtotheselectedobject.Ifonedoesnotwantimmediateassignment,
undotheselectionbeforeopeningthedialoguefordefininggradients.Todothis,clickwith
theselectiontoolonapositionwheretherearenoobjects.
1. IntheAreadialogue,clicktheGradientstab.Thistabenablesdefinitionofallofthe
optionsfornewcolourgradients.
2. Fromthelistofexistingcolourgradients,clickthegradienttouseasabasisforcreating
thenewcolourgradient.
3. ClicktheAdd...button.
a) Inthedialogue,assignanameforthenewgradient.Forexample,enterthename
“UFO”.
b) clickOK.Thenamewillappearasanewentryattheendofthelistandisselectedfor
editing.
4. ClickModifytosavethechangesinthenewgradient.Thepreviewshowshowthe
gradientlooks.
5. ClosetheAreadialoguewithOK.
Thenewcolourgradientmaybeusedimmediately.
InteractivelyDefiningacolourGradient
Colourgradientscanbemodifiedbyclickinganddraggingthemwiththemouse.However,
inordertobedefinedinteractively,theobjectmustalreadyhaveacolourgradient.
1. Selectanobjectwhichhasacolourgradient.
2. InDraw,opentheEffectsfloatingtoolbar
fromtheMaintoolbar.
3. OntheEffectsfloatingtoolbar,clicktheGradienticon.
Twoobjectsincolourwhicharelinkedbyavectorshouldnowbevisible.
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Tools Tab. Item. Name. Description. Ⅰ. Hand. Pan around the PDF document. Ⅱ. Select. Select text and image to copy and paste using Ctrl+C and Ctrl+V.
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C# WPF PDF Viewer SDK to view PDF document in C#.NET
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Chapter6:CreatingDrawingswithDraw
Dependingonthetypeofgradient,oneorbothoftheobjectscanbemovedwiththemouse
andthusdeterminetheorigin,endandangleofthecolourgradient.Whenthecolourbaris
displayed,assigncoloursbydragginganddroppingtheselectiontoeachobjecttodetermine
thestartandendcolours.
Inasimilarmanner,thetransparencyofanobjectcanbesetusingthe
Transparency
icon.Withthistool,definingagrayscalegradientwhichspansfromblack(0%transparency,
i.e.opaque)towhite(100%transparent)ispossible.
OrganizingtheAttributeTables
TheiconsLoadGradientsListandSaveGradientsListopendialoguesforopeningand
savinggradients.Thecurrentgradientlist,forinstance,mightconsistofallgradientswhich
arecustomdefinedforacertainproject.Savethelist,thenreloadthestandardlist.Thisway
thelist(andthememoryspace)canbekeptfreefromresourcesthatarenotneeded.To
continueworkingonthisprojectlater,simplyreloadthecustomgradientlist.Thesame
procedureappliesforloadingandsavinglistsofhatchingsandbitmaps.
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C# WPF PDF Viewer SDK to annotate PDF document in C#.NET
Line color. Select the line color when drawing annotations on PDF document. Default create. Click to select drawing annotation with default properties. Text box.
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VB.NET PDF - Annotate PDF with WPF PDF Viewer for VB.NET
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Chapter6:CreatingDrawingswithDraw
3DGlobe
Thissectiondescribeshowtocreateathree­dimensionalglobewithDrawinjustafewsteps.
Whenfinished,rotatethefinishedGlobeusingthemouse.
CreatingTextureona3DObject
Note:Ifonlytheglobeshownhereisneeded,andcreatingasimilaroneisnotonneeded,usethefinishedglobe
fromtheGalleryinthe3DEffectstheme.Dragtheglobeintothedocument.
Tocreateacustom3Dglobe,firstopenanemptydrawdocument,insertaglobeandthen
applyaworldmapasatexturetotheglobe(worldmap2.wmffromtheStarOfficecollection
isagoodchoicebutthereareothersavailableviatheInternet).Thenadjusttheillumination.
1. OpenanemptydrawingdocumentbychoosingFile>New>Drawing.
2. Openthe3DObjectsfloatingtoolbar
ontheleftoftheMaintoolbar.
3. SelectSpherefromthetoolbar,
4. Dragopenaareatocreatetheglobe.All3Dobjectscanbeopenedinthisway.Ifcreating
anoblongshapeispreferable,presstheShiftkeywhiledragging.Thisbehaviourfor3D
objectsisoppositetothewayotherobjectssuchasellipsesandrectanglesbehave.
5. OpentheGallery. TheGallerythemesappearassubdirectories.
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6. Locatethemaptobeused.IfthereisaMapstheme,clicktheitandtheGalleryshowsthe
maps.
7. Clickanyrectangularworldmap,say,worldmap2.wmf.
8. HolddowntheShiftandCtrlkeysanddragthemapoftheworldontothesphere.
Thislaysthemapoftheworldonthesphereasatexture.
9. IftheGalleryhidestheglobe,userscanfixtheGallerywindowsothatitnolonger
overlapswiththedocument.AttheedgeoftheGallerywindowclicktheStick/Floating
icon(lookslikeathumbtack).
Thetextureislaidontothesphereinitsoriginalsizeinthedefaultsetting.Sincethemapof
theworldismuchlargerthanthesphere,onlyasmallsegmentisseenasagreenareaonthe
sphere.Thiswillsoonbechanged.
1. Clickthespheretoselectit.
2. DisplaythecontextmenuforthesphereandchooseArea.TheAreadialogueappears
withtheAreatabpage.
3. SelecttheBitmapfield,removingthemarkintheTilefield.
4. ClosethedialoguewithOK.
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Nowtheworldmapcanbeseenastextureonthesphere.OpenOffice.orghasautomatically
selectedthemostappropriateprojectionmethod.Toseethis,double­clickonthesphereand
thenrotateit.
InTools>Options>OpenOffice.org>Viewtab,checktheappropriateboxfor3Dobjects
torefreshduringinteraction.
UsingIllumination
Nowoneneedstoprovideilluminationfortheworldglobe.Selectanoverallblue
illumination,forexample,sothattheoceanswillhaveabluecolour,andayellowhighlight
thatwillshineonthesideoftheearthfacingthesun.
1. Selecttheworldglobesincetheilluminationpreferencesbeingsetalwaysrefertothe
currentlyselectedobject.
2. Openthe3DEffectswindowbyclickingthe3DControllericon
atthebottomof
themaintoolbar.
3. Inthe3DEffectswindow,clicktheIlluminationbutton.
a) Usethisfeaturetochangethedefaultsettingofthelightsourceto“blue”andmoveit
downandtotheleft.
b) ClickAssign.
4. Repeatstep3toapplyasecondlightsourcein“yellow”toshineontheearthfromthe
aboveright.
More3dEffects
Takealookatthe3DEffectswindow.Theindividualtabsandiconsaredescribedindetailin
Help.Whatfollowsisjustabriefoverview:
3DEffects:Favourites
Thisdialoguewindowoffersafewspecialeffects
thatcanbeusedonthe3Dobject.Tosave
interestingeffectssothattheyareavailablefor
selectiononthistab,filetheappropriate3D
objectintheGallery,morespecificallyinthe3D
themefolder.
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3DEffects:Geometry
Byusingthisfeature,theusercancontrolthe
mannerandqualityofhowtheobjectsurfaceis
geometricallycalculatedanddisplayed.For
example,interestingeffectscanbeproducedby
deliberatelyreducingthenumberofsegmentsof
asphere.Propertiesofthe3Dfont,suchasthe
slantoftheedge(bevel),depth,etceteraare
determinedhere.
3DEffects:Shading
Thisfeaturepermitsspecifyingthesetting
oftheshader(flat,phongor
Gouraud)tobeusedtodisplaythe3D
object.Gouraudprovidesthebest
shading,butrequiresthemostcomputing
time.Alsousethisfeaturetospecifya
shadowforthe3Dobjectandtoselectthe
cameradistanceandfocallength.
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