19/1/07, pm-n.

Week: 5 ( 29/1 - 2/2 )

Lectures:

Plans for the course
About OpenGL

Exercises:
A visit to the Panorama:

Wednesday 12:15 - 13:00, 20002229 - 20030596 ( DAIMI )
Wednesday 13:15 - 14:00, 20031548 - 20060282 ( DAIMI )
Thursday 12:15 - 13:00, 20020182 - 20053256 ( IMV )

In Stibitz:
Create a new directory and copy the contents of /users/pmn/public/cgf07/week5 to this new directory.
The directory countains several C programs and some scripts ( MAKE and RUN ). The programs are compiled by:
./MAKE <program name>
and executed by:
./RUN <program name>
The programs are:

double : example 1-3 in "The red book"
geoF : a cube, a sphere and a pyramid, all flat-shaded
geoG : as geoF but Gouraud-shaded ( i.e. smooth-shaded )
surfaceF : a surface formed by two crossing sine-waves ( flat-shaded )
surfaceG : as surfaceF but Gouraud-shaded

All four programs implement a primitive "grabber". The purpose of this grabber is to be able to inspect a scene from different positions and angles. The rotation and translation of the scene is controled from the key-board as follows:

x : translate in the x-direction
y : translate in the y-direction
z : translate in the z-direction
X : rotate around the x-axis
Y : rotate around the y-axis
Z : rotate around the z-axis
a : reverse the direction for translation and rotation
r : reset translation and rotation

Make some simple experiments with one or more of the programs:

execute a program and look through the source code of the program. Try to figure out what program statements are responsible for what visual effects. Make simple changes to the program to convince yourself.
add more light sources ( chapter 5 in "The red book" ) to the scene. Investigate how the material color and the color of light source combine.

Reading:

OpenGL, Programming Guide ( "The red book" )
Chapter 1, Introduction to OpenGL