GORT: Specifications

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GORT Specifications

• Leon Kania Haipin Cua Thoren McDole Chang
  Huang

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Application

• Educational tool and a programming utility for
  programmers who wants to visually design and
  build 3D objects.
• Educational A programmer can draw 3D objects,
  output the code, and be able to learn OpenGL by
  dissecting code.
• Programming Utility Facilitates visual design of
  3D objects and their environment. A programmer
  may output working code and modify it to suit
  his/her purposes.

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Requirements Functional

• File Management
• New, Open, Save, Save As
• Edit Capabilities
• Cut, Copy, Paste, Delete, Select, Select Inverse,
  Undo, Redo, Group, Ungroup
• View Capabilities
• Zoom In/Out, Orthogonal View, Pan, Free Rotate
• Transform Capabilities
• Affine transformations and perspective
  transformations
• Scale, Rotate, Translate, Shear

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Requirements Functional

• Draw Primitives
• Box, Sphere, Cone, Cylinder, Pyramid, Plane
• Compose Primitives
• Union, Intersection, Subtraction
• Add Material
• Color, Reflective Properties (interaction with
  environment), opacity.
• Export file
• OpenGL

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Composition Mechanism
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Requirements Non-Functional

• Program for Unix environment
• C/C, GTK2.0, OpenGL, XML, gtkGL extensions,
  STL
• Extensible
• Underlying code is going to be designed to be
  simple and organic.
• Portable
• OpenGL centric but underlying classes are going
  to be designed so that other graphics API can be
  easily accommodated.

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Requirements Non-Functional

• Implicit and Parametric Definitions.

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Screen Shot
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Use Cases
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Detailed Use Case
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Scenario

• Draw Primitive
• User selects box primitive
• User specifies a center point in space by
  clicking on one of the view ports. The
  unspecified axis defaults to zero.
• User drags to change initial scale.
• Initial scale is the distance between the initial
  click and the unclick.
• Object is now drawn.
• User copies and paste box primitive in the exact
  same location.
• User translates the pasted box object by x number
  of units upward.
• User applies a uniform scale reducing the size of
  the pasted box.
• User subtracts the pasted box from the original
  box.

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Scenario
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Future Extensions

• Export to other formats.
• 3D Studio Max, Corel, Jpeg, GIF, Bitmaps, etc.
• More Objects
• Geo-sphere, Capsule, Disc, Torus, Tea-pot,
  Spirals, Text, 2D Objects, NGons, Curves, etc.
• Advance Representations of Current Primitives
• Bezier, NURBS, and other Splines.
• Lights and Cameras

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Future Extensions

• Animation
• Robotics, Shrek, etc.
• Environmental Effects
• Fog, Combustions, Reflections, etc.
• Rendering Techniques
• Ray Tracing
• Multi-Threading
• Simultaneous rendering by multiple machines.
• Simultaneous editing by multiple artists.

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Questions

• Why did the chicken cross the road?