27/2/07, pm-n.

Week: 9 ( 26/2 - 2/3 )

Lectures:

OpenGL in the Panorama - from 'glut' to 'VR Juggler'.

Exercises:
How to operate the Panorama.
It takes place in the Panorama ( CAVI ) as follows:

Project group:  1 -  3, Wednesday, 12:00 - 12:30
     -          4 -  6,     -      12:30 - 13:00
     -          7 -  9,     -      13:00 - 13:30
     -         10 - 12,     -      13:30 - 14:00
     -         13 - 15,     -      14:00 - 14:30
     -         16 - 18,     -      14:30 - 15:00
     -         19 - 21, Thursday,  12:00 - 12:30
     -         22 - 24      -      12:30 - 13:00
   Spare                    -      13:00 - 14:00

Project group numbers have been added to the list of participants.

Example programs:
The directory /users/pmn/public/cgf07/week9 contains programs from preceding weeks. They have been modified to fit on top of the platform 'VR Juggler' ( rather than 'glut' ). The programs are:

main_surfaceG ( from week7 )
main_texture ( from week8 )
main_texture_alpha ( from week8 )
main_texture_2 ( from week8 )

Compilation:
In order to produce an executable, which will run on the work stations ( in Stibitz ) as well as in the Panorama, the compilation must take place on either 'beretta' or 'goldberry', e.g.:
ssh beretta
< enter DAIMI password >
cd < dir. with example programs >
./MAKE main_surfaceG
Execution:
./RUN_main_surfaceG
The execution must take place on the work station at which you are sitting ( in Stibitz ) or 'kylle' ( in the Panorama ). Only compilation must take place on 'beretta' or 'goldberry'. The execution is terminated by pressing 'Esc'.

New classes:

environment, environment::get_cluster() returns 0 if running on a work station, 1 if running in the panorama.
wand, wand::getWandMatrix( m ) returns the 4x4 transformation matrix from the wand or mouse in the vector float m[16]. The matrix elements are stored in the vector in the sequence: m11, m21, m31, m41, m12, m22, m32, m42, m13, m23, m33, m43, m14, m24, m34, m44. The matrix contains the position of the mouse if running on a work station, or the position and orientation of the wand if running in the panorama. When running on a work station, the matrix will only change when the mouse is moved while either 'Ctrl' or 'Alt' is pressed.

buttons, The methods buttons::button0, ... , buttons::button3 returns 1 if the button is pinched, 0 otherwise.

buttons::button0,  the left button on the mouse 
                   or the yellow button on the wand.  
buttons::button1,  the red button on the wand.
buttons::button2,  the right button on the mouse
                   or the green button on the wand.
buttons::button3,  the blue button on the wand.

keyboard, keyBoard::getKey() returns a value KEY__F1, ... ( compile time constants defined in keyBoard.h ) if the corresponding key is currently pressed. Otherwise the value NO_KEY is returned.
keyBoard::getKey_singleShot(), is similar to getKey, but it operates in 'single shot mode'. It means, that a key value different from NO_KEY is returned only after the key has been released and then pressed again.

Exercises:

Compare the examples in week9 with the corresponding programs from preceding weeks, and notice the differences. Then make similar changes to your project.
Measure the translation returned by getWandMatrix for a set of positions of the wand and the mouse.