Lab 1

Objectives

• To familiarlize you with the structure of PBRT
• To get you to modify PBRT and get used to its plug-in structure

Tasks

1. Basically Problem 3.7 from the book
2. Define your own class of parametric surface

Notes

1. Here is a skeleton program for lab1.
2. The input file will have a new input command like

   Shape "parametricShape" 
   

   followed by name-value pairs such as

   "float umin" -1.0 "float umax" 1.0
   "float xcoefficients" [0.1 1.0 0.5 0.0]
   

3. The parameters should include the range and step size in u and v.
4. The plug-in is defined by a DLL file (for a PC) with the same name as your new shape
5. A plug-in routine (CreateShape) will get control. You can 'refine' the shape at this point and generate a triangle mesh as well as the object bounds.
6. the triangle mesh can be passed to the constructor routine for your shape
7. The new shape you define should include a constructor, an objectBound() routine, Refine() routine, and an IntersectP() routine (that returns 'false').
8. The Refine routine passes back the triangle mesh
9. Cut-and-paste any 'triangle' and 'triangle mesh' PBRT routines you need to include with your code

What to submit ?

1. A text file named README with the following information:
   • Your name(s).
   • Any issues you encountered.
2. At least two .pbrt scene files
3. The source files you wrote