GIS Lecture 10: 3D Analyst

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GIS Lecture 10 3D Analyst
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Outline

• Load 3D Analyst Extension
• 3D Scene
• Triangulated Irregular Network (TIN)
• Drape Features to TIN
• Extruding 3D Features
• Navigating a 3D Scene
• 3D Effects
• Animations
• 3D Symbols
• Light of Sight Analysis
• ArcGlobe

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Load 3D Analyst Extension
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Load 3D Analyst Extension

• Tools, Extensions

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3D Scene
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3D Scene

• Load from extension toolbar or start menu
• Uses .sxd file format

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3D Scene

• 3D Scene with layer added

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Triangulated Irregular Network

• Triangulated Irregular Network (TIN) Structure
• Defined by two elements a set of input points
  with x,y, and z values, and a series of edges
  connecting these points to form triangles.
• Each input point becomes the node of a triangle
  in the TINstructure, and the output is a
  continuous faceted surface of triangles.

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Create TIN

• Create TIN from topo features

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Resultant TIN
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TIN Zoomed
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TIN Properties

• Color changed and soft lines turned off

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Drape Features to TIN
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Drape Features to TIN

• Edit layer properties

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Resultant Layer
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Extruding 3D Features
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Extruding 3D Features

• 3D buildings includes 3D heights

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Extruding 3D Features

• Extrude using Height field

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Resultant Layer Extruded

• Buildings draped to TIN and extruded

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Navigating a 3D Scene
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Observer and Target Locations

• Target

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Observer and Target Locations

• Observer

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Navigate a Scene

• Navigate button

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Flythrough a Scene

• Choose Fly button and slowly move mouse
• Left mouse increases speed
• Right mouse decreases speed
• ESC stops flight

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Multiple Views

• Add New Views

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3D Effects
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3D Effects Toolbar

• 3D Effects Toolbar

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Transparent Effect

• Set layer transparency

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Layer Face Culling

• Turns off the display of front or back faces of
  an areal feature or graphic

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Layer Lighting

• Switches lighting on/off

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Shading Mode

• Defines smooth or flat shading

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Depth Priority

• Changes layers drawing priority

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Animations
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Record and Play Animation

• Animation Toolbar and Tools
• Record Animation
• Animation Controls
• Record button
• Fly button
• Stop button
• Play Animation
• Play button

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Save Animation

• Save as ArcView animation (.ASA)

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Save Animation

• Export as .AVI or .MOV video

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Load Animation

• Opens ArcView animation
• Ready to play

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3D Symbols

• Start with 2D point symbols (street trees)

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3D Symbols

• Add layer and display (drape) in ArcScene

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3D Symbols

• Swap with 3D Symbol

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3D Symbols

• Resultant layer with 3D symbols

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Line of Sight Analysis
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Line of Sight Analysis

• Add TIN in ArcMap

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Line of Sight Analysis

• Create Line of Sight
• Set offset
• Pick points

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Resultant Line Analysis

• Lines showing visibility (green) and obstruction
  (red)

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ArcGlobe
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Launch ArcGlobe

• Choose from 3D Analyst toolbar or
• Start menu

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ArcGlobe Window
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Add and Display Vector Data
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Save ArcGlobe Project
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Summary

• Load 3D Analyst Extension
• 3D Scene
• Triangulated Irregular Network (TIN)
• Drape Features to TIN
• Extrude 3D Features
• Navigate a 3D Scene
• 3D Effects
• Animations
• 3D Symbols
• Light of Sight Analysis
• ArcGlobe