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# GIS Lecture 10: 3D Analyst - PowerPoint PPT Presentation

GIS Lecture 10: 3D Analyst. 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. Load 3D Analyst Extension.

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Presentation Transcript

• 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

• Tools, Extensions…

### 3D Scene

• Uses .sxd file format

• 3D Scene with layer added

• 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.

• Create TIN from topo features

• Color changed and soft lines turned off

### Drape Features to TIN

• Edit layer properties

### Extruding 3D Features

• 3D buildings includes 3D heights

• Extrude using Height field

• Buildings draped to TIN and extruded

### Navigating a 3D Scene

• Observer

• Navigate button

• Choose Fly button and slowly move mouse

• Left mouse: increases speed

• Right mouse: decreases speed

• ESC: stops flight

### 3D Effects

• 3D Effects Toolbar

• Set layer transparency

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

• Switches lighting on/off

• Defines smooth or flat shading

• Changes layer’s drawing priority

### Animations

• Animation Toolbar and Tools

• Record Animation

• Animation Controls

• Record button

• Fly button

• Stop button

• Play Animation

• Play button

• Save as ArcView animation (.ASA)

• Export as .AVI or .MOV video

• Opens ArcView animation

• Add layer and display (drape) in ArcScene

• Swap with 3D Symbol

• Resultant layer with 3D symbols

### Line of Sight Analysis

• Create Line of Sight

• Set offset

• Pick points

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

### ArcGlobe

• Choose from 3D Analyst toolbar or

• 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