The viewer provides a simple framework upon which to build OpenGL-based applications. It supports the following features:

• Various modes of world navigation, including trackball, drive, translate, and look.
• Solid, wireframe, and point toggling
• Window frame-grabbing to PPM files - "snapshot"
• Camera path recording and playback (with timing information)
• User provided display routine that can be called continuously for animation (as idle routine)
• Backface culling toggling
• Complete inertial navigation system that allows users to impart "momentum" on an object being viewed. This option can be toggled.
• Flat/Smooth Shading toggling
• Supports four cameras. We can toggle between cameras and each camera's frustum can be displayed.
• Text display (module is provided, but is not used), just call routines at the end of the display routine to have text in the viewer (see viewer/text.hpp,text.cpp).
• Runs on SGIs and on the PC without changing any code.

• viewer_example1.cpp : bare application that displays a teapot
• viewer_example2.cpp : same, but adds support for menu and keyboard input

• viewer: OpenGL viewer that provides a framework upon which to build OpenGL-based applications.
• camera: a fully-featured camera class module that provides storage of projection and viewing parameters (the orientation axes and the frustum), provides a direct link to the OpenGL matrix stack by directly providing GL_MODELVIEW and GL_PROJECTION matrices so users can simply manipulate the camera as an object and then load the matrices before rendering, transformation matrices can be provided that go between screen-space and object-space, basic world-navigation routines are provided, etc.
• math: various math modules providing for vectors, matrices, and planes.

• SGI: use the provided makefile. It will need editing to provide the relative location of the camera and the vec3f files, and the location of the GLUT library and include files.
• PC: (assuming MSVC) create a Win32 console application, add the OpenGL and GLUT libraries, add all source files, compile, and run. OpenGL and GLUT must be properly installed.