-
Notifications
You must be signed in to change notification settings - Fork 0
Debian packaging for fyre (fyre.navi.cx), an explorer for De Jong maps
License
mvanderkolff/fyre-packaging
This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository.
Folders and files
Name | Name | Last commit message | Last commit date | |
---|---|---|---|---|
Repository files navigation
================== Fyre ================== Introduction ------------ Fyre is a tool for producing computational artwork based on histograms of iterated chaotic functions. At the moment, it implements the Peter de Jong map in a fixed-function pipeline with an interactive GTK+ frontend and a command line interface for easy and efficient rendering of high-resolution, high quality images. This program was previously known as 'de Jong Explorer', but has been renamed to make way for supporting other chaotic functions. All the images you can create with this program are based on the simple Peter de Jong map equations: x' = sin(a * y) - cos(b * x) y' = sin(c * x) - cos(d * y) For most values of a,b,c and d the point (x,y) moves chaotically. The resulting image is a map of the probability that the point lies within the area represented by each pixel. As you let Fyre render longer it collects more samples and this probability map and the image becomes more accurate. The resulting probability map is treated as a High Dynamic Range image. This software includes some image manipulation features that let you apply linear interpolation and gamma correction at the full internal precision, producing a much higher quality image than if you tried to create the same effects using standard image processing tools. Additionally, Gaussian blurs can be applied to the image using a stochastic process that produces much more natural-looking images than most programs, again without losing any of the image's original precision. Contact info and the latest version of Fyre is available from: http://fyre.navi.cx Quality Metric -------------- Fyre 1.0.0 introduces a new quality metric for determining stopping conditions on command-line and animation rendering. It is much more consistent across images than using the maximum density. A quality of 1.0 is generally "pretty good", and 2.0 produces a very high quality image. As usual, while this metric is pretty reliable, it's impossible to automatically judge aesthetics, so you may need to fiddle with it if you're dissatisfied with the results. Loading and Saving ------------------ Unless given a .exr extension, all images saved using the GTK+ frontend or the -o command line option are standard PNG files containing an extra 'tEXt' chunk with all the parameters used to create the image. This means the image can be loaded back in using the -i command line option or the "Parameters -> Load from image" menu item. One convenient use of this is to save small low-quality images using the GUI, then use the -i, -q, -s, and -o options to render very high quality and/or large images noninteractively. When using the -o (--output) option, no GUI is presented. Instead, Fyre just outputs status lines every so often with the current rendering process. These lines include: - percent completion - current number of iterations - speed in iterations per second - current and target peak density values - elapsed and estimated remaining time Animation --------- Fyre includes an animation subsystem. From the main explorer window, use View > Animation window to open the animation interface. Animations are represented as a list of keyframes, with a transition after each. Keyframes can be manipulated with the buttons at the top of the window. Transitions consist of a duration, in seconds, and an editable curve. This curve's presets can be used to transition linearly or ease in and out of keyframes, but you can also edit the curve for more complex effects. Each keyframe in the list also shows you the bifurcation diagram between that keyframe's parameters and the next. Intense black dots or lines in the bifurcation diagrams are fixed points or limit cycles, which usually don't look good in animation. You can preview the animation by dragging the two horizontal seek bars, or using the 'play' button. The keyframe list can be loaded from and saved to a custom binary format. Once you have an animation you like, you can get a higher quality version using File -> Render. The result will be an uncompressed .AVI file. You can use tools like mencoder or transcode to compress this file with your favorite codec. Animations can also be rendered from the command line using the -n and -o options together. Clustering ---------- As of 0.7, Fyre supports cluster rendering. On each worker node, start up fyre with the -r command-line switch. On the head node, select your cluster nodes using either the GUI or -c on the command line. If you're dealing with a large cluster, the cluster-utils.sh file will probably prove useful. Clusters on the local network can be autodetected using UDP broadcast packets. See the -C command line option, or the autodetection check box in the GUI. Note that cluster mode cannot be used for animations at this time. Dependencies ------------ Hard Dependencies: - GTK+ 2.0 - libglade Soft Dependencies: - GTK+ 2.4 - OpenEXR, necessary for saving .exr files - GNet, for clustering and remote control mode Compiling --------- Standard autotools procedure. configure, make, make install, you know the drill. Fyre supports Windows, using the same autotools build system. You'll need Cygwin to compile this under Windows, but we find a cross-compiler under Linux easier. The tools in the 'build' directory are used to create the final binary packages. Authors -------- David Trowbridge <trowbrds@cs.colorado.edu> Micah Dowty <micah@navi.cx>
About
Debian packaging for fyre (fyre.navi.cx), an explorer for De Jong maps
Resources
License
Stars
Watchers
Forks
Packages 0
No packages published