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gfx/fract/dejong.lha

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Showing:m68k-amigaosppc-amigaosppc-morphosi386-arosi386-amithlonppc-warpupppc-powerupgeneric
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Short:De Jong Explorer
Author:mrustler at t-online.de (Matthias Rustler)
Uploader:mrustler t-online de (Matthias Rustler)
Type:gfx/fract
Version:0.2
Requires:OS3.9BB1, Cybergraphics or Picasso96
Architecture:m68k-amigaos
Date:2004-05-19
Download:http://aminet.net/gfx/fract/dejong.lha - View contents
Readme:http://aminet.net/gfx/fract/dejong.readme
Downloads:1210
This ist a port of version 0.3 of the 'de Jong Explorer'
(http://freshmeat.net/projects/de_jong_explorer/)
to the Amiga platform. The source code has GPL and is included.

see http://mrustler.bei.t-online.de for some screenshots

Main differences between Amiga and original version:
---------------------------------------------------
- ReAction GUI system instead of GTK+
- AmigaDos ReadArg (type 'dejong help' for parameters)
- saving in IFF-Format plus a parameter file instead of PNG
- loading from parameter file instead of loading from PNG


================================================
set stack to 10000 when you start it from shell!
================================================

==================
 de Jong Explorer
==================

Introduction
------------

The de Jong Explorer provides a rendering of the Peter de Jong map, with
an interactive ReAction frontend and a command line interface for easy and
efficient rendering of high-resolution, high quality images.

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)

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 the de Jong Explorer render longer, it collects more
samples and this probability map, 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.


Loading and Saving
------------------

All images saved using the ReAction frontend or the 'o' command line option are
standard IFF. The parameters used to create the picture are saved in an extra
file with .dje extension. 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', 't', '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, the
de Jong Explorer 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


Bugs
----

- When the color window is opened, the sliders have the wrong colors


TODO
----

- Implementing functions of actual original version (currently 0.5)
- Tooltype for opening on public screen


HISTORY
-------

0.2 Virtual Gadget, Tooltype 'PubScreen'
0.1 First release


Contents of gfx/fract/dejong.lha
 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 1370    1703  80.4% -lh5- d041 May 15  2004 deJong.info
[generic]                 7014   17992  39.0% -lh5- 4902 May 27  2003 deJong/COPYING
[generic]                  666    1077  61.8% -lh5- d59f Mar 30  2004 deJong/COPYING.info
[generic]                20540   38880  52.8% -lh5- 2a6e May 18  2004 deJong/deJong
[generic]                 1164    1740  66.9% -lh5- a939 May 15  2004 deJong/deJong.info
[generic]                 1570    3384  46.4% -lh5- 8095 May 15  2004 deJong/dejong.readme
[generic]                 1837    2773  66.2% -lh5- 72cd Mar 30  2004 deJong/dejong.readme.info
[generic]                  347    1034  33.6% -lh5- b93b Apr  4  2004 deJong/Makefile
[generic]                 1369    1703  80.4% -lh5- f5a4 Mar 30  2004 deJong/src.info
[generic]                   33      33 100.0% -lh0- 5439 Feb 21  2004 deJong/src/.indent.pro
[generic]                 4324   16047  26.9% -lh5- bdb7 May 17  2004 deJong/src/callbacks.c
[generic]                  722    1863  38.8% -lh5- 21d6 Mar 23  2004 deJong/src/callbacks.h
[generic]                 2835   11801  24.0% -lh5- d544 May 17  2004 deJong/src/color-button.c
[generic]                 1039    2160  48.1% -lh5- f353 May 15  2004 deJong/src/de-jong.h
[generic]                 2990   15868  18.8% -lh5- a5ae May 15  2004 deJong/src/explorer.c
[generic]                  941    1843  51.1% -lh5- bd4d Mar 30  2004 deJong/src/gtk.c
[generic]                  422    1001  42.2% -lh5- 371d Mar 30  2004 deJong/src/gtk/gtk.h
[generic]                 1215    3020  40.2% -lh5- b889 May 17  2004 deJong/src/interface.c
[generic]                 1168    2812  41.5% -lh5- ae27 May 15  2004 deJong/src/interface.h
[generic]                 6510   24307  26.8% -lh5- 6eb5 May 17  2004 deJong/src/main.c
[generic]                 3652    9770  37.4% -lh5- 2bb8 Apr  4  2004 deJong/src/render.c
[generic]                 1536    4065  37.8% -lh5- 15f3 Oct 27  2002 deJong/src/SDI_compiler.h
[generic]                 2170    7968  27.2% -lh5- 1472 Oct 27  2002 deJong/src/SDI_hook.h
[generic]                 1794    6251  28.7% -lh5- d659 May 15  2004 deJong/src/size.c
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total        24 files   67228  179095  37.5%            May 19  2004

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