Notes for Homework 10

• NOTE: Make sure to update your webpage with images from this assignment!
• Code to read and write PPM and BMP images is available here.
• A list of interesting indices of refraction is available here.
• Example images of: a reflective material, ray traced shadows, correct refraction, incorrect refraction, scene with a triangle, and three pathtracing examples.
• Make sure you turn in a 512 x 512 image for the following scene. You must document in your README how we can recreate this scene with your program!
  • Eye at: (0,5,5), Looking at: (0,0,0), with Up Vector: (0,1,0).
  • Field of view in the Y-axis should be 90 degrees.
  • Red (1,0,0) sphere centered at (0,1,0) with radius 1
  • Green (0,1,0) sphere centered at (3,1,-3) with radius 3
  • Yellow (1,1,0) sphere centered at (-2,-3,2) with radius 2
  • Blue (0,0,1) plane with normal (0,1,0) running through point (0,-2,0)
  • Reflective plane with normal (0,0,1) running through point (0,0,-7)
    • You may make this reflector non perfect (less than 100% reflectivity) if you want.
  • Red (1,0,0) triangle with vertices (3,-2,4), (3,2,3), and (2,-2,2).
  • Refractive sphere of radius 1.5 centered at (0,3,3).
    • Please show at least two images on your web page -- one with and one without this sphere!
  • Light at: (-5,5,2) with color (1, 0.6, 1)
• C++ code snippets you may use:
  • A vector class [tar/gz] or [zip]
  • A point class [tar/gz] or [zip]
  • Color & image classes [tar/gz]or [zip]
  • Assorted other classes & snippets [tar/gz] or [zip]
• Additional code snippets will be posted later:
  • C++ code for my Camera class and my main() and traceRay() functions.
  • C++ header for my base Object class
  • C++ code for my Sphere class: header, source
  • C++ code for my Diffuse material class: header, source

Chris Wyman (cwyman@cs.uiowa.edu)