Unix Demonstration Programs - Silicon Graphics IRIS Series Terminal Manual

30 IRIS TERMINAL GUIDE
NOTE: Color rendering and stability may drift for the
first 45 minutes after startup.
1. After the Monitor has warmed up, adjust the
knob until the gray raster is barely brighter than the black areas on
the edge of the screen. Lighter brightness settings will impair image
sharpness and color fidelity.
2. Turn the
for optimum clarity.
3. If the color purity or convergence appear to be out of adjustment,
hold down the
about 10 seconds and then release it. The image should improve
noticeably.

6.7 UNIX Demonstration Programs

After the IRIS Terminal has been booted, it can be tested by running the
demonstration programs included on the distribution tape. For C and FORTRAN
there are source files for sqiral and track in /usr/iris/c and /usr/iris/f77.
• sqiral draws a square spiral. The spiral is constructed with line
drawing commands from the IRIS Graphics Library. After the spiral
is finished, the terminal emulator window is redrawn.
• track displays a box that can be moved around the screen with the
mouse. It is a simple application of the IRIS Graphics Library object
creation and editing commands with double buffer mode. To quit
track, press all three mouse buttons simultaneously.
For FORTRAN there are also source files for curve, floats, planets and star in
/usr/iris/f77.
• curve initially displays a red arrow on the screen. The mouse
controls the arrow's movement. Pushing the left mouse button
creates a small square on the screen. Lines are drawn between
squares with each additional key click.
• floats randomly fills the screen with different colored pixels. floats
also tests floating point numbers.
• star draws a series of stars. First, star initializes the color map with
247 shades of red. star then draws a star in the upper right corner
of the screen with the lightest shade. The star is redrawn with a
slight offset with each brighter shade of red. After all the stars are
drawn, star exits and the terminal emulator window is redrawn.
• planets models a solar system. See the documentation in planets.doc
in /usr/iris/f77.
control knob to the maximum (clockwise) setting
Contrast
button on the Monitor Control Panel for
Degauss
Operation
control
Brightness
Version 1.3