Files in this directory are collected or made by Alena Lacova, alena@nikhef.nl.
You can find here many useful examples for beginners and advanced PostScript
programmers or hints you may need while writing your own program for graphics.
You can also find here pictures made for testing colors or shadows of gray of
the PostScript printers, or just for fun.

Directories and files:

graphics/basic_graphics:
-----------------------
Files in this directory are examples of basic geometric figures: 
straight lines, circles, rectangles and curves.

arrowheads.ps
circle.ps
illusion.ps
interpol_curve.ps
line_thickness.ps
lines.ps
pretzel.ps
rectangle.ps
setlinewidth.ps
shades_of_gray.ps

graphics/color_pictures:
-----------------------
This directory was made to show how you can make beautiful pictures with
very simple or more complicated PostScript programs. You can use these
pictures to test color quality of your color printer.

RandomButterflies.ps
RandomFlowers1.ps
RandomFlowers2.ps
color_escher.ps
flowers_1.ps
flowers_2.ps
multiflake.ps
parrot.ps
peter.ps
tiger.ps

graphics/colors:
---------------
This directory consists of programs for testing colors or helping a user
find out how to get the desirable color. 
Example "ManyColor.ps" produces 1331 different colors on 5 pages, 
but you can also use example
"PrintColorNames.ps" to help decide for color to use (it has more than 
60 colors within one page).

ManyColors.ps
PrintColorNames.ps
cmyk_color_test.ps
hsb_color_test.ps
rgb_color_test.ps

graphics/feynman:
----------------
This directory was made to help physicists to draw feynman diagrams.

TwoConectedDashedArcs.ps
TwoConectedWaveArcs.ps
photon.ps

graphics/fractals:
-----------------
FractalArrows.ps
box_fractal.ps
escher.ps
fractals.ps
hilbert_curves.ps
koch_snowflake.ps
sierpinski_trial.ps

graphics/graphs:
---------------
gaussian.ps
step.ps

graphics/pictures_blackwhite:
----------------------------
butterfly.ps
eye.ps
golfer.ps
porsche.ps
roseart.ps
starchart.ps