creating a 3d virtual city using arcgis

5/20/2018 Creating a 3d Virtual City Using Arcgis

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ESRI Developer Summit 2008ESRI Developer Summit 2008 11

Creating a 3D Virtual CityCreating a 3D Virtual City

Using ArcGISUsing ArcGIS

Milad ErshaghiMilad Ershaghi

Product Engineer, 3D AnalystProduct Engineer, 3D AnalystDeepinder DeolDeepinder Deol

Product Engineer, 3D AnalystProduct Engineer, 3D Analyst


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OverviewOverview


Creating the 3D DatasetCreating the 3D Dataset

MultiPatch GeometriesMultiPatch Geometries

Authoring the 3D ViewAuthoring the 3D View

Serving the 3D ViewServing the 3D View


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Outline: Creating the Dataset using MultiPatchesOutline: Creating the Dataset using MultiPatches

PlanPlan

Data CollectionData Collection

Data DisplayData Display

Out of the BoxOut of the Box

CustomCustom

DevelopDevelopSingle BuildingSingle Building

MultiPatch GeometryMultiPatch Geometry

IGeneralMultiPatchCreatorIGeneralMultiPatchCreator

Entire CityEntire City

WorkflowWorkflow

Custom SolutionCustom Solution



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Data Collection: BackdropData Collection: Backdrop

Transportation RoutesTransportation Routes

Aerial ImageryAerial Imagery

Elevation DataElevation Data



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Data Collection: BuildingsData Collection: Buildings

Building FootprintsBuilding Footprints

Building TexturesBuilding Textures

Building ModelsBuilding Models



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Data Display: Elevation, ImageryData Display: Elevation, Imagery



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Data Display: Transportation RoutesData Display: Transportation Routes



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Data Display: Building FootprintsData Display: Building Footprints



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Data Display: Extruded FootprintsData Display: Extruded Footprints



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Data Display: Building ModelsData Display: Building Models



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Data Display: Textured BuildingsData Display: Textured Buildings



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Geoprocessing Tool: Import 3D FilesGeoprocessing Tool: Import 3D Files

Input FormatsInput Formats

ColladaCollada

SketchUpSketchUp

OpenFlightOpenFlight

3ds Max3ds Max

GeoVRMLGeoVRML



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Geoprocessing Tool: Layer 3D to Feature ClassGeoprocessing Tool: Layer 3D to Feature Class

3D Symbology3D Symbology

Extrusion SettingsExtrusion Settings

Texture DownsamplingTexture Downsampling



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Custom Solution: Textured Buildings GeneratorCustom Solution: Textured Buildings Generator


??


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Single Building: MultiPatch GeometrySingle Building: MultiPatch Geometry

MultiPatch: a 3D geometry used to represent the outerMultiPatch: a 3D geometry used to represent the outer

surface/shell of features that occupy a discretesurface/shell of features that occupy a discrete

area/volume in threearea/volume in three--dimensional space. MultiPatchesdimensional space. Mult iPatchescomprise 3D rings and triangles that are used incomprise 3D rings and tr iangles that are used in

combination to model a threecombination to model a three--dimensional shell.dimensional shell.

One or More PatchesOne or More Patches

Zero or More Geometry MaterialsZero or More Geometry Materials

1 to Many Relationship1 to Many Relationship

(Geometry Material : Patch)(Geometry Material : Patch)


MultiPatchMultiPatch

PatchPatch

ListList

__________________

Patch 0Patch 0

Patch 1Patch 1

Patch 2Patch 2

Patch nPatch n--11

GeometryGeometry

MaterialMaterial

ListList

__________________

Material 0Material 0



Material mMaterial m--11


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Single Building: PatchesSingle Building: Patches


TriangleStripTriangleStrip TriangleFanTriangleFan

TrianglesTriangles RingRing

Building

Walls

BuildingFloors,

Building

Roofs


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Single Building: Geometry MaterialsSingle Building: Geometry Materials


Geometry MaterialGeometry Material

ColorColor

__________________

RR: 0 to 255: 0 to 255

GG: 0 to 255: 0 to 255BB: 0 to 255: 0 to 255

TransparentTransparent

TextureTexture

ColorColor

__________________

RR: 0 to 255: 0 to 255

GG: 0 to 255: 0 to 255

BB: 0 to 255: 0 to 255

TextureTexture

ImageImage

__________________

JPGJPG

GIFGIF

PNGPNG

TIFTIF

TGATGA

BMPBMP

TransparencyTransparency

__________________

0.0 to 1.00.0 to 1.0

(210, 232, 255) (28, 255, 255)0.5C:\TextureImage.jpg


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Single Building: StepsSingle Building: Steps

1.1. Define Geometry Material ListDefine Geometry Material List

2.2. Initialize General MultiPatch CreatorInitialize General MultiPatch Creator

3.3. Define Patch TypesDefine Patch Types

4.4. Define Material IndicesDefine Material Indices

5.5. Define Point Starting IndicesDefine Point Starting Indices

6.6. Define Texture Point Starting IndicesDefine Texture Point Starting Indices

7.7. Define PointsDefine Points

8.8. Define Texture PointsDefine Texture Points

9.9. Generate MultiPatchGenerate MultiPatch

10.10. Cleanup ResourcesCleanup Resources



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1. Define Geometry Material List1. Define Geometry Material List


FloorTexture.jpgFloorTexture.jpg

RoofTexture.jpgRoofTexture.jpg

WallTexture.jpgWallTexture.jpg


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2. Init ialize General MultiPatch Creator2. Initialize General MultiPatch Creator


Patch 0Patch 0

Patch 1Patch 1

Patch 2Patch 2

8, 08, 0

9, 19, 1

22

33

44

55

66

77

0, 40, 4

3322

11

22

3377

66 11

22

33

4, 04, 0


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3. Define Patch Types3. Define Patch Types


Patch 0Patch 0

(Ring)(Ring)

Patch 1Patch 1(Ring)(Ring)

Patch 2Patch 2

(TriangleStrip)(TriangleStrip)


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4. Define Material Indices4. Define Material Indices


Patch 0Patch 0

(Material 0)(Material 0)

Patch 1Patch 1(Material 1)(Material 1)

Patch 2Patch 2

(Material 2)(Material 2)


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55--6. Define Point & Texture Point Starting Indices6. Define Point & Texture Point Starting Indices


Patch 0Patch 0

Patch 1Patch 1

Patch 2Patch 2

18,18, 1010

19, 1119, 11

1212

1313

1414

1515

1616

1717

55, 9, 9

8877

66

1212

13131717

1616

4,4, 00

11

22

33


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7. Define Points7. Define Points


Patch 0Patch 0

Patch 1Patch 1

Patch 2Patch 2

(299918.004, 58577.206, 0), (299918.004, 58577.206, 0)(299918.004, 58577.206, 0), (299918.004, 58577.206, 0)

(299918.004, 58577.206, 15), (299918.004, 58577.206, 15)(299918.004, 58577.206, 15), (299918.004, 58577.206, 15)

(299958.021, 58665.284, 0)(299958.021, 58665.284, 0)

(299958.021, 58665.284, 15)(299958.021, 58665.284, 15)

(299799.596, 58737.614, 15)(299799.596, 58737.614, 15)

(299759.579, 58659.536, 15)(299759.579, 58659.536, 15)

(299958.021, 58665.284, 15)(299958.021, 58665.284, 15)

(299799.596, 58737.614, 15)(299799.596, 58737.614, 15)

(299958.021, 58665.284, 0)(299958.021, 58665.284, 0)

(299958.021, 58665.284, 15)(299958.021, 58665.284, 15)(299759.579, 58659.536, 15)(299759.579, 58659.536, 15)

(299759.579, 58659.536, 0)(299759.579, 58659.536, 0)

(299918.004, 58577.206, 0), (299918.004, 58577.206, 0)(299918.004, 58577.206, 0), (299918.004, 58577.206, 0)

(299958.021, 58665.284, 0)(299958.021, 58665.284, 0)

(299799.596, 58737.614, 0)(299799.596, 58737.614, 0)

(299759.579, 58659.536, 0)(299759.579, 58659.536, 0)

Patch 2Patch 2

(299918.004, 58577.206, 15), (299918.004, 58577.206, 15)(299918.004, 58577.206, 15), (299918.004, 58577.206, 15)

(299799.596, 58737.614, 0)(299799.596, 58737.614, 0)

(299759.579, 58659.536, 0)(299759.579, 58659.536, 0)

(299759.579, 58659.536, 15)(299759.579, 58659.536, 15)


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8. Define Texture Points8. Define Texture Points


Patch 0Patch 0

Patch 1Patch 1

Patch 2Patch 2

(119, 5), (0,5)(119, 5), (0,5)

(119, 0), (0, 0)(119, 0), (0, 0)

(21.249, 5)(21.249, 5)

(21.249, 0)(21.249, 0)

(59.5, 0)(59.5, 0)

(80.749, 0)(80.749, 0)

(0, 385.460)(0, 385.460)

(131.480, 0)(131.480, 0)

(21.249, 5)(21.249, 5)

(21.249, 0)(21.249, 0)(80.749, 0)(80.749, 0)

(80.749, 5)(80.749, 5)

(78.238, 108), (78.238, 108)(78.238, 108), (78.238, 108)

(98, 48.698)(98, 48.698)

(19.762, 0)(19.762, 0)

(0, 59.302)(0, 59.302)

Patch 2Patch 2

(520.519, 702), (520.519, 702)(520.519, 702), (520.519, 702)

(59.5, 5)(59.5, 5)

(80.749, 5)(80.749, 5)

(652, 316.540)(652, 316.540)


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99--10. Generate MultiPatch & Cleanup Resources10. Generate MultiPatch & Cleanup Resources



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Entire City: WorkflowEntire City: Workflow

1.1. Construct Material Properties TableConstruct Material Properties Table

2.2. Construct Building Properties TableConstruct Building Properties Table

3.3. Construct Textured Buildings Feature ClassConstruct Textured Buildings Feature Class



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1. Construct Material Properties Table1. Construct Material Properties Table


MaterialMaterial

PropertiesProperties

TableTable

GeneratorGenerator

MaterialMaterial


TableTable

MaterialMaterial


FileFile


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2. Construct Building Properties Table2. Construct Building Properties Table


BuildingBuilding


TableTable

GeneratorGenerator

BuildingBuilding


TableTable

MaterialMaterial


TableTable

BuildingBuilding

FootprintsFootprints

Feature ClassFeature Class


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3. Construct Textured Buildings Feature Class3. Construct Textured Buildings Feature Class


TexturedTextured

BuildingsBuildings


GeneratorGenerator

MaterialMaterial


TableTable

BuildingBuildingPropertiesProperties

TableTable

BuildingBuilding

FootprintsFootprints


TextureTexture

ImagesImages...


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Entire City: OutputEntire City: Output



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Custom Solution: ResultsCustom Solution: Results

58,085 Textured Buildings

4.6 GB Feature Class

Average Feature Size: 79 KB

ArcObjects C# Solution

Source Code Provided

MultiPatch Whitepaper

> 150 Pages of Fully Illustrated Code Samples

Tips and Best Practices

In-Depth Walkthrough of Solution



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Demo


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Outline: Authoring and Serving the 3D ViewOutline: Authoring and Serving the 3D View

Authoring the 3D ViewAuthoring the 3D View

Globe Data CachingGlobe Data Caching

Texture ManagementTexture ManagementUsing Multiple RepresentationsUsing Multiple Representations

DemoDemo

Publishing to ArcGIS ServerPublishing to ArcGIS ServerDemoDemo

QuestionsQuestions


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Globe Data CachingGlobe Data Caching

Mechanism for managing large amounts of dataMechanism for managing large amounts of data

To improve display performance, ArcGlobe keeps aTo improve display performance, ArcGlobe keeps a

cache of t iles for each layercache of t iles for each layer

Two types of cachesTwo types of caches

Memory CacheMemory Cache

For immediate useFor immediate useDisk CacheDisk Cache

Tiles are stored on disk for later useTiles are stored on disk for later use

Tiles are swapped between disk cache and memoryTiles are swapped between disk cache and memory

cache based on available resources and the currentcache based on available resources and the current

viewview


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Memory CacheMemory Cache

Refers to assigning an amount of the computer's RAMRefers to assigning an amount of the computer's RAM

for use by ArcGlobefor use by ArcGlobe

Memory can be assigned by data typeMemory can be assigned by data type Significant improvement in performance with properSignificant improvement in performance with proper

settingssettings

IGlobeAdvancedProperties2

.GetTileMemory(t ype, l i mi t , cur r ent );.SetTileMemory(t ype, l i mi t );

IGlobeAdvancedProperties2

.GetTileMemory(t ype, l i mi t , cur r ent );.SetTileMemory(t ype, l i mi t );


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Disk CacheDisk Cache

Tiles are stored on disk for fast retrievalTiles are stored on disk for fast retrieval

Layer disk cache is temporary unless the ArcGlobeLayer disk cache is temporary unless the ArcGlobe

document or a layer file is saveddocument or a layer file is saved

Two methods of generating the cache:Two methods of generating the cache:

OnOn--demanddemand: t iles are created and stored as needed: t iles are created and stored as needed

ExplicitExplicit: cache all areas: cache all areas PartialPartial: generate cache for specified level of detail: generate cache for specified level of detail

FullFull: all levels of detail: all levels of detail

Feature data in ArcGlobe has only one level of detailFeature data in ArcGlobe has only one level of detail

TipTip: For best performance generate full caches for your: For best performance generate full caches for your

3D objects (buildings etc.)3D objects (buildings etc.)


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Texture ManagementTexture Management

Textures on 3D objects can be memory intensiveTextures on 3D objects can be memory intensive

Data can take longer to displayData can take longer to display

Navigation can be sluggishNavigation can be sluggish

Performance degradation depends upon availablePerformance degradation depends upon available

physical memory as well as memory cache settingsphysical memory as well as memory cache settings

Three textureThree texture--management options are available:management options are available:

Disable texturesDisable textures

Apply DXT compressionApply DXT compression

Downscale texturesDownscale textures


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Texture ManagementTexture Management

Layer PropertiesLayer Properties GlobeDisplayGlobeDisplay

DXT compressionDXT compression

Texture downscalingTexture downscaling

Disable texturesDisable textures


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Using Multiple RepresentationsUsing Multiple Representations

Feature data in ArcGlobe has only one level of detailFeature data in ArcGlobe has only one level of detail

If you have large number of features thenIf you have large number of features then

Create multiple representations of your dataCreate multiple representations of your data

Use GP tools in ArcToolboxUse GP tools in ArcToolbox

Use texture management techniquesUse texture management techniques

Use different visibility rangesUse different visibility ranges

FarFar(less detail)(less detail)

NearNear(more detail)(more detail)


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ExampleExample: Multiple representations for buildings: Multiple representations for buildings

Aggregated building footprintsAggregated building footprints

Individual building footprintsIndividual building footprints

Extruded footprintsExtruded footprints

Buildings without texturesBuildings without textures

Buildings with downscaled texturesBuildings with downscaled textures

Buildings with full resolution texturesBuildings with full resolution textures

CoarsestCoarsest

FinestFinest


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For detailed information on which GP tools to use andFor detailed information on which GP tools to use and

how to optimize your ArcGlobe document please see:how to optimize your ArcGlobe document please see:

http://support.esri.com/index.cfm?fa=knowledgebase.http://support.esri.com/index.cfm?fa=knowledgebase.

documentation.viewDoc&PID=54&MetaID=1298documentation.viewDoc&PID=54&MetaID=1298


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Demo


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Publishing to ArcGIS ServerPublishing to ArcGIS Server

Publish the ArcGlobe document as a GlobeServicePublish the ArcGlobe document as a GlobeService

Supports LocalSupports Local--area (LAN) and Webarea (LAN) and Web--based accessbased access

Consume in ArcGIS Explorer, ArcGlobe, Globe ControlConsume in ArcGIS Explorer, ArcGlobe, Globe Control

All ArcGlobe supported data types can be servedAll ArcGlobe supported data types can be served

Supports Identify, Search and Find featuresSupports Identify, Search and Find features

Animation is also supportedAnimation is also supported


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Demo


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Questions?


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Thank You

creating a 3d virtual city using arcgis

Documents

imageryesri developer

d analyst5202018

d viewauthoring

d view5202018

d datasetcreating

d viewserving

d virtual citycreating

d analystproduct engineer