Fall 2007, 22C:151, Computer Graphics

Computer Science 22C:151, Fall 2007

Tuesdays & Thursdays 9:30-10:45am, 221 MacLean Hall

[ Download the Syllabus ] [ Check Your Grades ] [ Grab a Feedback Form ] [ Submit an Assignment ]

Professor: Chris Wyman
E-mail: cwyman@cs.uiowa.edu
Office: 101J MacLean Hall
Phone: (See my homepage. I prefer e-mail whenever possible.)
Office Hours: T 10:45 am - 12:00 pm
Office Hours: Th 10:45 am - 12:15 pm, or by appointment
Teaching Assistant: Greg Nichols
E-mail: gbnichol@cs.uiowa.edu
Office: 317 MacLean Hall
Office Hours: MW 10:45 am - 12:15 pm,
Office Hours: or by appointment

Required Textbook:
----OpenGL Programming Guide (Note: There are multiple editions of this book.)
---------Recommended: Sixth Edition (ISBN #0-321-48100-3)
---------A Fine Substitute: Fifth Edition (ISBN #0-321-33573-2)
---------Just Acceptable: Fourth Edition (ISBN #0-321-17348-1).


Professor: Chris Wyman E-mail: cwyman@cs.uiowa.edu Office: 101J MacLean Hall Phone: (See my homepage. I prefer e-mail whenever possible.) Office Hours: T 10:45 am - 12:00 pm Office Hours: Th 10:45 am - 12:15 pm, or by appointment	Teaching Assistant: Greg Nichols E-mail: gbnichol@cs.uiowa.edu Office: 317 MacLean Hall Office Hours: MW 10:45 am - 12:15 pm, Office Hours: or by appointment

Optional Textbooks: (will be available on reserve in the Math Library)
----Interactive Computer Graphics, 4th Edition (ISBN #0-321-32137-5)
----Fundamentals of Computer Graphics, 2nd Edition (ISBN #1-56881-269-8)

Announcements:

(12/19/07) -- The final exam scores have been posted. Students desiring to discuss their exam or homework 11 scores before final grades are submitted must set up an appointment sometime tomorrow (or risk catching me in my office on Friday morning without an appointment).
(12/17/07) -- The grades for Homework #11 have been posted.
- Final grades will be submitted to the registrar Thursday afternoon or Friday morning.
- Exam scores will be posted Wednesday afternoon or evening.
- Students wishing to discuss numerical grades for homework 10 or 11 or the final exam must do so before Thursday at 3 pm.
- Final, curved letter grades will be posted by the end of the week, shortly before/after I submit results to the registrar.
(12/13/07) -- The grades for Homework #10 have been posted.
- The maximum percentage achievable without extra credit (near the right) is just under 80%.
- Homework #11 will contribute roughly 5% of your grade, and the final counts as 15%.
- At this stage, it seems likely that a total of 90%+ will be needed for an A-/A/A+.
- Lower grades are almost always curved at least a little, but if you aim for 80%+ you'll get a B-type grade, and 70%+ will definitely earn you a C-type grade.
(12/12/07) -- It has been pointed out to me that (because I got my shader languages mixed up):
- "vec3 normal = (gl_NormalMatrix * vec4( gl_Normal, 0 )).xyz;" does not compile.
- "vec3 normal = gl_NormalMatrix * gl_Normal;" is correct.
- (It turns out gl_NormalMatrix is a 3 x 3 matrix in GLSL, so it correctly multiplies the 3-component normal vector).
(12/10/07) -- A final exam review sheet has been posted. Thursday, before the standard student evaluations, is your chance to ask questions about the exam and various topics that we have discussed this semester. Please take a look at the review sheet and formulate questions before then.
(12/7/07) -- The Grades for Homework #9 have been posted. Scores for Homework #10 should be up early next week sometime. Scores for Homework #11 may or may not be available before the final exam on Tuesday, Dec 18th (2:15-4:15).
(12/4/07) -- I thought I had posted these notes on reflection and refraction,but I guess I was mistaken. I hope they are not too late.
(12/4/07) -- I seem to have made a mix-up with the size of the refractive sphere in my scene (probably getting it mixed up with the index of refraction). To compare to my example image, the glass sphere should have a radius of 1.0, not 1.5. Of course, you are welcome to use a radius of 1.5, the image simply won't exactly match the example I have on the web.
(12/3/07) -- I have posted the random number generator class I promised: [Random.h] [Random.cpp]
(11/29/07) -- Grades for Homework #8 have been posted. Sorry about the delay.
(11/12/07) -- Grades for Homework #7 have been posted.
(11/08/07) -- Homework #9 has been posted. You should be able to finish it before the Thanksgiving break. However, to give you more time this is due the Tuesday after Thanksgiving (November 27th).
- Note: I will post Homework #10 before I go out of town. It will be due Wednesday, December 5.
(10/30/07) -- Homework #8 has been posted. Note that it is due Friday, Nov 9th instead of on a Wednesday.
(10/24/07) -- Grades for Homework #6 and the Midterm have been posted. Note that the whole grading sheet has been posted, showing your cumulative scores thus far as a percentage. The maximum score on the homeworks so far is 130 points, the maximum on the exams is 100, which (magically!) is half of the total possible this semester. This means the grades in the "Weighted Total" column are out of a maximum of 50%.
(10/24/07) -- We will be discussing the midterm tomorrow in class. If you have questions on your midterm grade, please talk to me. If you have questions on your HW #6 grade, please talk to Greg.
(10/21/07) -- Homework #7 has been posted. Note that it is due Monday, Oct 29th instead of on a Wednesday.
(10/15/07) -- There seem to be two common problems getting the code snippets provided for HW 6 to compile:
1. On some machines glMultTransposeMatrixf(), from trackball.cpp, is not defined. You may comment out the relevant functions or methods, as you will not use them. The problem is that this function was defined in OpenGL 1.4 or 1.5, and some machines (the lab machines?) seem to have an old copy of "gl.h"
2. If you use Windows but do not usually include "stdio.h" and "stdlib.h" in your programs, you may be encountering the problem of redefining "exit()" for the first time (since glm uses both headers). The solutions to this problem discussed on the instructions for installing GLUT on Windows. If you run into the problem on Linux, the only solution will be to reorder your header #includes's (see the link).
(10/14/07) -- Grades for Homework #5 have been posted.
(10/14/07) -- The midterm review sheet is now available.
(10/11/07) -- I have uploaded a new example executable for Homework #6 under Linux. Someone complained it didn't work on the lab machines, which likely occured due to library changes since last year. I've recompiled (and fixed the program to use the current trackball code).
(10/3/07) -- Homework #6 has been posted. I'm giving you more time to help your schedule around midterms. However, beware our midterm is the day after this assignment is due -- so putting off your work till the last minute is not a good idea!
(10/2/07) -- Grades for Homework #4 have been posted, along with (temporarily) a key.
(9/27/07) -- Homework #5 has been posted. Note that it is due next Friday instead of next Wednesday.
(9/27/07) -- Grades for Homework #3 have been posted.
(9/17/07) -- Grades for Homework #2 have been posted.
(9/17/07) -- Homework #4 has been posted. This is a written assignment, due in class (on paper) at the beginning of class on September 27th (Thursday).
(9/10/07) -- Grades for Homework #1 have been posted. You will need a three-digit random number to access your scores. I will give this number to you in class tomorrow, or via e-mail. Note that I cannot send an ID number to an e-mail address that is not an official University address.
(9/09/07) -- Homework #3 has been posted. As usual, notes and additional resources will be posted below later in the week.
(9/09/07) -- Greg gave a brief 1 hour C/C++ tutorial on Friday. If you were unable to make it, or just would like the slides as a reference, they are available here
(9/04/07) -- Homework #2 has been posted. More details and resources will be posted below soon.
(9/03/07) -- If you're having difficulty compiling your OpenGL program on the lab computers, please make sure you read the "readme" that comes with the glut_template example. Or, refer to this page for much more detailed instructions. If you're having trouble compiling under Windows, please see this page.
(8/16/07) -- The course enrollment is nearly at capacity (35 students). If you are still looking to register, my policy is to sign add slips on the first day of class until we reach the classroom's capacity (40 students). The priority ordering for these signatures is: 1st year CS PhD students, 1st year CS MCS students, other 1st year grad students, CS seniors, and other students.

Handouts and Notes From Class:

November 15: Barycentric Coordinates #1, (#2)
November 13: Ray tracing is not covered in the OpenGL Programming Guide. For more information, please look in the Ed Angel book "Interactive Computer Graphics" or the Shirley book "Fundamentals of Computer Graphics." Here are links to reasonable descriptions of:
- setting up a ray tracing camera (a bit lacking -- skips computation of vectors),
- a ray-plane intersection (see "Algebraic Form"), and
- a ray-sphere intersection.
November 6: Notes on Automatic Texture Generation, Shadow Map Transformations, Steps for Shadow Mapping
- Please be aware there are a few typos on function names and GL constants in these:
  - (From multiple handouts) GL_TEX_GEN_MODE => GL_TEXTURE_GEN_MODE
  - (From shadow map handout) GL_TEXTURE_COMPARE_FUNC is set with glTexParameter*() not glTexEnv*()
  - (From tex gen handout) "at the time glTexEnvfv( GL_?, GL_EYE_PLANE, plane); is called" should be "at the time glTexGenfv( GL_?, GL_EYE_PLANE, plane); is called" (where GL_? is one of GL_S, GL_T, GL_R, or GL_Q).
October 23: Mipmapping in OpenGL, (Messy) Notes on Projective Shadows
October 14: Midterm Review
October 9: Texturing (#1), (#2), (#3), OpenGL Texture Functions (Note: Page #'s are out of date)
October 4: Basic OpenGL Lighting Setup, Sample Snippets for OpenGL Lighting Setup, Common OpenGL Lighting Errors,
September 25: Perspective Explained 1, 2, 3, 4, 5, 6
September 20: Arbitrary Axis Rotation Example (FIXED!)
September 13: Triangle Rasterization #1, Tri Raster #2, Linear Interpolation, Triangle Color Interpolation #1, Tri Color Interp #2
September 4: Another Bresenham Line Drawing Example, Drawing Lines With Other Slopes
August 30: Important GLUT Functions, Baisc OpenGL Functions, GLUT Template Program
August 28: Syllabus, Homework 1, PPM Information

Assignments:

Assignment submission will occur via ICON this year. Please follow these instructions.


Homework 1 (Due: September 5th) HW1 Notes & Add'l Resources	Homework 2 (Due: September 12th) HW2 Notes & Add'l Resources	Homework 3 (Due: September 19th) HW3 Notes & Add'l Resources

Homework 4 (Due: September 27th) (At the start of class)	Homework 5 (Due: October 5th) HW5 Notes & Add'l Resources	Homework 6 (Due: October 17th) HW6 Notes & Add'l Resources

Homework 7 (Due: October 29th) HW7 Notes & Add'l Resources	Homework 8 (Due: November 9th) HW8 Notes & Add'l Resources	Homework 9 (Due: November 27th) HW9 Notes & Add'l Resources

Homework 10 (Due: December 5th) HW10 Notes & Add'l Resources	Homework 11 (Due: December 14th) HW11 Notes & Add'l Resources

Student Web Pages:

I expect all students to post timely updates to your web page to display results from your assignments.
If you would like your page to be removed from this list, please e-mail me.

Adam, Seth
Bodas, Shalmali
Bush, Chris
Cecil, Cole
Collins, Kyle
Ding, Kai
Dravis, Matt
Edstrom, Eric
Harris, Artistee
Jackowski, Keith
Jiang, Xiaosen
Kashikar, Meenal
Keller, Chelsey
Khaw, Ju Li
Kimbell, JT
Mereddi, Aravind
Murarka, Vani
Li, LiQun
Nadhani, Ritesh
Nimmagadda, Gautam
Rochambeau, Brent
Rubio, Alberto Lopez
Slaubaugh, Dan
Small, Scott
Smestad, Justin
Smith, Ryan
Song, Qi
Stults, Matt
Venkata, Shashank Polasa
Washburn, Brian
Wendell, Jed
Yin, Youbing

Frequently Asked Questions:

How do I compile on a Linux lab machine? How do I create a CS web page? How do I use Visual Studio to compile GLUT/OpenGL programs? How do I create or extract .tar.gz files? What are some common OpenGL pitfalls? (Here's 16) Where can I find more OpenGL information?

Helpful Links:
OpenGL Links:

The OpenGL Homepage (Documentation, specifications, and downloads)
An old, but useful OpenGL 1.1 State Machine Diagram (PDF).

Nate Robins' Win32 GLUT Page (Binaries and source, which should compile for non-Windows platforms too)
A local copy of the GLUT 3 API Specification (PDF).

The GLUI Homepage (C++ widgets for GLUT based OpenGL programs... make your programs user friendly!)
The GLEW Homepage (Easy platform-independant access to OpenGL extensions)
Sample Code from the Redbook, 4th Edition
Other Useful Links:

GIMP -- an image manipulation tool available for Linux and Windows (that reads PPM files).
Cygwin -- run all your favorite UNIX programs on Windows (including X, gcc, emacs, etc.)
University Policy Links:

On Academic Dishonesty and Cheating (more info here)
On Missing/Rescheduling Exams
On Arrangments for Disabled Students
On Complaints (and who to complain to)

Last Modified: Friday, June 4, 2007

Chris Wyman (cwyman@cs.uiowa.edu)