Free pixel shader 1.1 software for linux

Gimp::Pixel is a how to operate on raw pixels.

***WARNING*** this manpage is no longer up-to-date. See examples/map_to_gradient for a simple raw-pixel-manipulating plug-in. If you bug me enough Ill rewrite this document.

SYNOPSIS

use Gimp;
use PDL; # to make sensible things with the pixels

# Gimp::GimpDrawable - The GimpDrawable structure
# Gimp::Tile - The Tile family of functions.
# Gimp::PixelRgn - The PixelRgn family of functions.

You can access the pixels in a drawable through tiles or pixel regions. This manpage explains how this is done in perl. All classes (Gimp::GimpDrawable, Gimp::Tile, Gimp::PixelRgn) are available with and without the Gimp:: prefix.

x-fontperf is a small utility to measure font rendering/loading time in an x11 environment. Originally intended to see if there is any notable performance difference between a separate font server and local font rendering.
It actually does three different tests:
1) Loading the same font several times
Gives you an average loading time for this particular font. If you use a font already in use in your x-session this should be really quick as this font will be reused and not actually loaded again (cached)
2) Loading the same font in different sizes (incrementing)
Default is from 6 to 144 pixel. Interesting to see how rendering time increases with font size (see option -v)
3) Loading all available fonts
This should give you a good estimate on average fontloading time. Also a good test to stress your system and check if all fonts are loadable (see option -e)
Sample output:
x-fontperf -v
x-fontperf: Copyright (c) Holger Pfaff - http://pfaff.ws
x-fontperf: version 1.1 from 26-Mar-2004
x-fontperf: connected to server: :0.0
x-fontperf: server vendor: Gentoo Linux (XFree86 4.3.0, revision r3)
x-fontperf: vendor release: 40300000
x-fontperf: total of 6406 fonts found
x-fontperf: basefont: -*-helvetica-*-*-*-*-12-*-*-*-*-*-iso8859-1
x-fontperf: loading basefont 100 times ... 6292 usec 62 usec/font
x-fontperf: loading font from pixel size 6 to 144 ... 2977820 usec 21578 usec/font
x-fontperf: loading all 6406 available fonts ... 34965472 usec 5458 usec/font
Usage:
Usage: x-fontperf ...
-display X-display to use
-v Increase verbosity (may falsify results)
-e Show errors during tests
-n Number of iterations for test 1 [100]
-min Minimum pixel size for test 2 [6]
-max Maximum pixel size for test 2 [144]
-foundry Foundry of font [*]
-family Family of font [helvetica]
-weight Weight of font [*]
-slant Slant of font [*]
-setwidth Set width of font [*]
-addstyle Additional style of font [*]
-pixelsize Pixel size of font [12]
-pointsize Point size of font [*]
-resolutionX X resolution of font [*]
-resolutionY Y resolution of font [*]
-spacing Spacing of font [*]
-avgwidth Average width of font [*]
-registry Registry of font [iso8859]
-encoding Encoding of font [1]
Verbosity can be increased in three steps by specifying -v several times. No-
tation -vvv is not supported. Use -v -v -v. Errors opening fonts are not shown
by default. Use -e to see them.
-n specifies the number of iterations for test 1. The default of 100 (shown in
brackets) should be ok for most systems. Increase/decrease values for fast/slow
systems
-min/-max specifies the minimum/maximum pixel size for test 2. Pixel sizes are
incremented by one.
The last block of arguments is for specifying the basefont to use for tests 1
and 2. These follow the standard x11 font naming scheme. Again: defaults are
shown in brackets.
Enhancements:
- first public version 1.0

Gestalter is a free vector drawing program. The user interface is loosely modelled after the famous Illustrator by Adobe. The central element is the Bezier curve used as a base part for almost every other object.

Complex paths are possible, compound paths can be constructed, grouping of elements is enabled and everything can be screened by a mask. Multiple layers are possible, one can choose between two display modes: a antialiased and a wireframe one. The native storage format is a subset of SVG, printing output is Postscript.

You can place pixel images and transform (rotate, skew, scale, etc.) but not edit them (use GIMP for editing pixel image data). You can open the Postscript output of gestalter in GIMP to use your drawings on The Net.

BadWM is a minimalistic window manager for the X Window System licensed under the GNU General Public License.
Main features:
- No window decorations but a simple 1 pixel border.
- No icons.
- No menu.
- Good keyboard control (includes repositioning and vertical/horizontal/full maximisation).
- Configureable through a config file.
- Virtual desktops.
- Small binary size.
- High usability.
- Intellegent window placement
- Intellegent window resizing
- Snap to edge.
- Snap to border.
- Multihead support.

L2P creates PNG images of mathematical expressions formatted in LaTeX. While it can convert a whole LaTeX document, it is designed to easily generate images from just a fragment of LaTeX code.

Download l2p here, or read the documentation. L2P depends on other software: latex, dvips, and convert. The last one is from the ImageMagick graphics toolset.

If you already work with LaTeX on a modern Unix or Linux system, you probably already have all of that installed.

EXAMPLES:

* l2p -i $4x^2-7=cos{2 pi x}$ -o eqn4.png

Produce a PNG image, named eqn4.png, of the equation described by the LaTeX expression $4x^2 - 7 = cos{2 pi x}$.

* l2p -o big_equation.png big_hairy_equation

Produce a PNG image, called big_equation.png, from the LaTeX expression contained in the file big_hairy_equation (specifically, it contains $x=2$.) Note that this file is NOT a full LaTeX document - see the -F option for that.

* l2p -d 250 -i $
abla cdot mathbf{D} =
ho$

Produce a PNG image from the LaTeX code given with the -i argument (which happens to be one of Maxwells equations), at 250 dots per inch. Since we did not specify an output file name with the -o option, the image will be eqn.png (the default).

* l2p -p amssymb -i $mho$ -o mho.png

Produce a PNG image of the Mho symbol (an upside-down capital omega), saving the image in the file mho.png. We include the amssymb package, which defines that symbol.

OPTIONS:

-i "$latex$"
Argument is an equation/expression in (La)TeX format. In most cases, you will want to enclose the argument in quotes to protect it from shell expansion.

-b "rrggbb"
Background color. There are several ways to specify the color. See the section "COLORS", below, for details.

-d dpi
Pixel density at which the equation is rendered, in dots per inch (default 300).

An image with a DPI of 600 will have twice as many pixels in each of the x and y directions than an image with a DPI of 300. The effect is different in the normal context of printing, where a higher DPI will leave the text with the same physical size, but with a finer resolution. This is because the physical size of a pixel is not really variable; so to have double the resolution, a symbol in an image must be double the size.

-f "rrggbb"
Foreground color. There are several ways to specify the color. See the section "COLORS", below, for details.

-h Show a help summary.

-o output.png
Name of output file. Default is eqn.png

-p packagename[,packagename2[,...]]]
Use additional LaTeX/TeX packages. You can specify several, separated by commas.

-C Suppress automatic removal (cleanup) of temporary files. This will be useful if something goes wrong, or if you want to use the intermediate DVI or Postscript renditions. l2p will tell you which directory contains these files.

-F Supplied expression is a full LaTeX document, rather than just an expression fragment. Negates the -f, -b, -p and -T options.

Note: l2p currently only converts full LaTeX documents that are relatively simple: only one page in length, and with no external dependencies (such as included graphics). If you need to convert a more complex document, you can generate a DVI file with latex like normal, then convert the DVI into a series of PNG images using convert from the ImageMagick distribution. See convert(1), or < http://imagemagick.org/script/convert.php > for more information.

-T Create an image with a transparent background.

-V Show version information.

KWappen project is a colorful KDE3.2 board game.

The goal of the game is to eliminate the game tiles as quickly as possible. The game is solved if every column has one tile or no tiles.

The game is not a clone of any other board game, and the rules of the game are entirely unique.

KWappen requires a screen resolution that at least as large as 1024x768 pixels.

libmousetrap is a C library to create and manipulate mousetrap buffers in system memory. Mousetrap buffers are compressed two dimensional cartesian grids with integer precision.
A mousetrap buffer retains an integer identifier for every point in the grid, so that later the identifier can be referenced with a set of (x, y) coordinates.
Why?
Well, when youre doing graphics programming and somebody clicks something with the mouse, all you get is the x and y location where the click was, and what mouse button they pressed.
With the x and y location, all you can really get is the color of the pixel they clicked on, which doesnt tell you what *thing* on the screen they clicked on. There are lots of different ways to determine in your program what thing was clicked on, this library is one of them.
Enhancements:
- This release fixes a really silly but really nasty bug, I called the function to create mousetraps out of SDL surfaces with the flags and the id parameters mixed up.