3D Interactive Model of Carletons Campus

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3D Interactive Model of Carletons Campus

• Paul Wilmes, Ed Williams, Henry Gross, Deborah
  Chasman
• Advisor Professor Jack Goldfeather

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The Campanile Movie UC-Berkeley
Source Paul Debevec and his research group.
http//www.debevec.org/Campanile/
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Our Tasks

• Compile a library of primitive objects
• Design class hierarchy
• Build editing software to assist in model
  creation
• Create an interactive viewer
• Make a model of Carleton!

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Outline

• The Model
• The Viewer
• Movement
• Textures and Lighting
• The Editor
• Demonstrations
• Future Plans

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The Model Class

• Contains sub-Models
• Contains ComplexObjects
• Allows interaction with model
• File I/O
• Drawing
• Transformation
• get/set commands

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Primitive Objects

• Collection of vertices
• Instructions for connecting the vertices to form
  faces
• Transformations from the unit version

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Complex Objects

• Any Complex or Primitive object or collection
  thereof
• ComplexObject
• Anything in the .co directory
• PrimitiveObject
• PrimitiveCube
• PrimitivePyramid
• PrimitiveCone
• PrimitiveSphere
• PrimitiveCylinder
• PrimitiveHalfCube
• PrimitiveRoof
• PrimitiveHalfCylinderWall
• PrimitiveThickHalfCylinderWall

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Transformations

• Transformation Class
• Translation, Rotation, Scale
• Matrix
• Matrix4x4f Class

Transformation Matrix
Original Vertex
Transformed Vertex
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Model Directory Structure

• Main Folder
• .co Complex Object directory
• Special Model files read in as ComplexObjects
• Model Files
• Objects that are part of the model
• (Other subdirectories)
• (Model Files)

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Viewer

• Viewer
• Overarching class
• Contains non-GL specific data
• GLViewer
• Handles all GL activity

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Viewer

• Interaction
• Takes all input and calls the appropriate
  functions
• InteractionListener
• Key/Mouse Listener for easy binding to
  Interaction
• Holds all functions for dealing with key binding

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Viewer

• Console
• Text-based way of sending commands directly to
  interaction
• Options
• GUI access to common interaction commands

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Lighting

• Light Properties
• Diffuse
• Ambient
• Specular
• Position

• Surface Properties
• Diffuse
• Ambient
• Specular
• Emission

Red, Green, Blue, Alpha (transparency)
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Yellow Sphere Surface Ambient and Diffuse 1 1
0 0 Default Ambient Light Setting .2 .2 .2 0
White Diffuse Light 1 1 1 0
Lighting Disabled
Red Diffuse Light 1 0 0 0
Green Diffuse Light 0 1 0 0
Blue Diffuse Light 0 0 1 0
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Textures

• Each face can have associated texture
• Texture can by any standard image format
• .bmp, .jpg, .gif
• Image must be 2n x 2m

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Textures

• Map co-ordinates of the image onto each vertex of
  the face you are drawing the texture on

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Carleton without textures Carleton with
textures
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Editor

• (Preditor)

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Organization

• Provides the graphical interface through which
  the user can interact with the underlying Model.
• Ships the changed model off to the Viewer.

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Software Goals
Create Objects and Models
Modify those creations -Apply transformations -Col
or -Texture -Intuitive/flexible/tactile
interface for transformation
Be Aware of Current State of Model -See
attributes of current selection -Tree for
selection -Visual feedback from viewer
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Swing

• GUI (graphical user interface) toolkit for Java
• Listens for actions performed on the interface
• Text entry, button presses, slider movement, tree
  selection

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Demo Time!
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Features for the Future

• Collision Detection
• More object types with more options
• Support for splines (for terrain)
• More transformations (such as skewing)
• Network functionality
• Performance improvements
• Update the project to work for newer versions of
  Java
• More detail

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Acknowledgements

• Professor Jack Goldfeather
• Meg Gibbs
• Mike Tie

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Questions?