3D in Photoshop: The Ultimate Guide for Creative Professionals

225 Pages·2010·14.43 MB·English

by  Zorana Gee

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3D in Photoshop
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3D in Photoshop
The Ultimate Guide for Creative
Professionals
Zorana Gee
Pete Falco
AMSTERDAM(cid:1)BOSTON(cid:1)HEIDELBERG(cid:1)LONDON(cid:1)NEWYORK(cid:1)OXFORD
PARIS(cid:1)SANDIEGO(cid:1)SANFRANCISCO(cid:1)SINGAPORE(cid:1)SYDNEY(cid:1)TOKYO
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BritishLibraryCataloguinginPublicationData
3Dinphotoshop:theultimateguideforcreativeprofessionals.
1.Adopephotoshop.2.Digitalart.3.Three-dimensionalimaging.
I.Gee,Zorana.II.Falco,Pete.
776-dc22
LibraryofCongressControlNumber:2010930199
ISBN:978-0-240-81377-6
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PrintedandboundintheUnitedStates
10111210987654321
Contents
Foreword.................................................................................................................ix
AbouttheAuthorsandAcknowledgements.................................................xi
Introduction...........................................................................................................xv
PartI Introductionto3DConcepts...............................................................1
Chapter1 Scene...................................................................................................3
1.1. The3DScene.......................................................................................................................3
1.2. MeshesandVertices.......................................................................................................3
1.2.1. 3Dvs2D....................................................................................................................3
1.3. Cameras...................................................................................................................................5
1.3.1. PerspectiveCamera...........................................................................................5
1.3.2. OrthographicCamera......................................................................................5
1.3.3. DepthofField.......................................................................................................6
1.4. Lights.........................................................................................................................................7
1.4.1. PointLight...............................................................................................................7
1.4.2. InfiniteLight...........................................................................................................8
1.4.3. SpotLight.................................................................................................................8
1.4.4. Image-BasedLight.............................................................................................9
1.5. Materials..................................................................................................................................9
1.5.1. Photoshop-SupportedMaterialProperties....................................11
1.6. UVs............................................................................................................................................16
1.6.1. UVMaps.................................................................................................................17
Chapter2 Rendering:OpenGL(OGL)andAdobeRay
Tracer(ART).....................................................................................19
2.1. OpenGL.................................................................................................................................19
2.2. RayTracing.........................................................................................................................21
2.2.1. RayTracingEffects..........................................................................................22
2.3. OtherRenderSettings................................................................................................24
2.3.1. DepthMappreset...........................................................................................24
2.3.2. Normalspreset..................................................................................................24
PartII 3DinPhotoshop...................................................................................27
Chapter3 GettingStartedwith3DinPhotoshop.................................29
3.1. Workspaceandthe3DPanel................................................................................29
3.2. Importing3D.....................................................................................................................31
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Contents
3.3. Convertingto3D............................................................................................................31
3.3.1. 3DPostcard..........................................................................................................31
3.3.2. 3DShapefromPreset..................................................................................32
3.3.3. 3DRepousséObject......................................................................................33
3.3.4. 3DMeshfromGrayscale............................................................................34
3.3.5. 3DVolumes..........................................................................................................35
3.4. Navigating3D...................................................................................................................35
Chapter4 Materials...........................................................................................37
4.1. MaterialLibraryandBrowsingMaterials.......................................................37
4.2. 3DMaterialToolsandEditing..............................................................................39
4.2.1. MaterialDropper/LoaderTools..............................................................39
4.2.2. ChangingMaterialColor.............................................................................39
4.3. Paintingon3D.................................................................................................................40
4.3.1. OptimalPositioningofyour3DModelforPainting..............41
4.3.2. PaintingonUnwrappedTextures........................................................42
4.3.3. ReparameterizingUVs..................................................................................43
4.4. TiledPainting....................................................................................................................43
Chapter5 Lights,ShadowsandFinalRendering...................................45
5.1. LightTypes.........................................................................................................................45
5.2. PositioningLightsandKeyboardShortcuts................................................45
5.3. EditingLights....................................................................................................................46
5.4. AddingandEditingShadows................................................................................47
5.4.1. GroundShadowsandSnappingObjecttoGroundPlane......50
5.5. ColoredTransparentShadows.............................................................................51
5.6. FinalRendering................................................................................................................55
5.6.1. TestRendering...................................................................................................56
Chapter6 AdobeRepoussée3DExtrusions..........................................57
6.1. IntroductiontoAdobeRepoussé.......................................................................57
6.2. ChangingtheRepousséShape............................................................................60
6.2.1. Presets.....................................................................................................................60
6.3. Constraints..........................................................................................................................64
6.3.1. Holes.........................................................................................................................65
6.3.2. ActiveConstraints...........................................................................................66
6.3.3. InactiveConstraints........................................................................................66
6.4. AssigningMaterials.......................................................................................................67
6.4.1. ExtrusionTextureMapping......................................................................67
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Contents
6.5. MeshQuality......................................................................................................................67
6.5.1. RepousséSpeed...............................................................................................68
6.6. SplitApartFunctionality...........................................................................................68
Chapter7 PerformanceSettingsandOptimization..............................71
7.1. 3DPreferences.................................................................................................................71
7.2. GPUMemory(VRAM)..................................................................................................72
7.3. InteractiveRendering..................................................................................................73
7.3.1. OpenGL(onbydefault)..............................................................................73
7.3.2. AllowDirectToScreen(onbydefault)............................................73
7.3.3. Auto-HideLayers(onbydefault).........................................................73
7.3.4. RayTracer(offbydefault).........................................................................73
7.4. RayTraceQualityThreshold..................................................................................73
7.5. 3DFileLoading...............................................................................................................74
7.5.1. ActiveLightSourceLimit...........................................................................74
PartIII Workflows..............................................................................................75
Chapter8 3DandCompositingwithBertMonroy...............................77
8.1. SimpleComplexity........................................................................................................97
Chapter9 AdobeRepousséwithCoreyBarker....................................103
9.1. TextandReflections..................................................................................................104
9.2. CreatingRealistic3DProductShots..............................................................113
9.3. Masking3DShapesforEffect............................................................................125
9.4. 3DandPhotoshopEffects....................................................................................133
9.5. CoverArtBreakdown...............................................................................................144
9.5.1. GettingStarted...............................................................................................144
Chapter10 Painting,TexturingandLighting
withStephenBurns.................................................................153
10.1. Importing3DUsing3DVIA................................................................................154
10.2. CreatingtheLayout................................................................................................157
10.3. TexturingtheWallsoftheBuildings..........................................................170
10.4. Lightingthe3Dmodel.........................................................................................173
10.5. AddingtheWetLooktotheStreet............................................................175
10.6. AddingLocalizedBumpandReflective
Characteristics.............................................................................................................178
10.7. AddingDepthofFieldandtheSplash.....................................................181
vii
Contents
Chapter11 CreatingLenticularswithRussellBrown.........................187
11.1. GettingStarted..........................................................................................................188
11.1.1. EquipmentandSoftware...................................................................188
11.2. BasicLenticularWorkflow..................................................................................188
PartIV Appendices..........................................................................................193
AppendixA: FileFormats................................................................................................195
AppendixB: InteroperabilityandLimitations..................................................199
Index......................................................................................................................201
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Foreword
Gavin Miller
Traditionalanalogphotographycombinedthecreativeuseofcameraswith
postprocessinginthedarkroom.Photographersadjustedscenecomposition
andlighting,andcontrolledexposure,focallengthanddepthoffieldto
capturethemomentonfilm.Inthedarkroom,chemicalmanipulationfor
transfercurveswascombinedwithopticalmanipulationssuchasdodgeand
burn,convolutionsusingmovingfilm(suchasaRostrumCamera)and
compositingusingopticalmasks.
Photoshop,initsearlydays,waslargelyinspiredbythedesiretomoveimage
manipulationstothedigitalrealminwhichtheyweremorerepeatable,
convenientandexpressive,allowingnotdozensbuthundredsoflayers,and
imagetransformationsandeffectsnotpossiblewithanalogprocessing.At
thesametime,Photoshopbecamearichgraphicdesignmediuminwhich
vectororrastergraphicscouldbemanipulatedtocreatetheimpressionof
somesimpleformsoflightingandgeometry,suchasfloatingtextwithdrop
shadowsandembossing.
Withthegrowthof3DfunctionalityinPhotoshop,thecreativepotentialis
expandinginanewdirection,inwhichitisthephotographicstudioitselfthat
becomesvirtual,withlights,camerasandmodelstakingtheformofalgo-
rithmsratherthanphysicalobjects.Manyofthesamecreativedecisions
remainfromphysicalphotographysuchasscenecompositionandcamera
focallengthanddepthoffield.Buttherearearangeofnewartisticdecisions
tomakeinwhichthemodelsthemselvescanbemadeofawidevarietyof
shapesandmaterials.Imagestakeonanewroleassurfacetexturesapplied
togeometry,capturingtheappearanceandstructureofsubstancesrather
thanwholeobjects.
A 3D rendering might be an end in itself, or be part of a larger compo-
sition with captured imagery or 2D graphic elements. By integrating 2D
and3Dtoolsintothesameapplication,anewcreativemediumispossible
in which layer effects and 3D rendering styles interact to produce images
that would be expensive or impossible to make with either alone. 3D
graphics imposes a certain amount of structure on the resulting images,
with shadows consistent with the geometry and lighting. Sometimes
a designer will have a particular look in mind and carefully manipulate all
the elements to produce the desired result, but just as valid is exploring
themodelbymovingthecameraandlightsarounduntilahappyaccident
of light and shadow resonate with the viewer, as happens with physical
photography.
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