Modules

All source is located in the project's src directory. These are:

• cb.gn - The gnash script to build the scene and handle input from the Tk interface.

• Gn*.[c.h], gnash.c, gn.h - These contain the source code which was given to extend Tcl with callbacks for Gn. These will be modified to provide for the new model constructs.

• *CB.[c.h] - C callbacks for the Gn extension to Tcl.

• intersect.[c.h] - Intersection tests for rays with various object types. These include the code for handling CSG operation objects.

• texmap.[c.h] - Procedures to incorporate solid texture maps.

• matrix.[c.h], vectors.[c.h] - Linear algebra library routines.

• render.[c.h] - Code for handling the rendering of a frame, including lighting, reflection, and refraction rays.

• picrtns.c, pic.h - Handles writing scanlines to a .ppm output file.