Mac Os X Rar Archiver
by Thomas LuftUniversity of Konstanz |
A few months ago I was looking for a new sample scene to test watercolor renderings. I was thinking of something complex, filled with vegetation - like trees overgrown with ivy. Fortunately I was able to implement a procedural system so that the ivy would grow by itself. The result is a small tool allowing a virtual ivy to grow in your 3d world.
The ivy grows from one single root following different forces: a primary growth direction (the weighted average of previous growth directions), a random influence, an adhesion force towards other objects, an up-vector imitating the phototropy of plants, and finally gravity. This simple scheme reveals that the goal was not to provide a biological simulation of growing ivy but rather a simple approach to producing complex and convincing vegetation that adapts to an existing scene. The ivy generator imports and exports obj+mtl files.
Here are precompiled versions for Win32, MacOS, and Linux including the source code of this project under the GNU General Public Licence. The MacOS port was kindly done by Robert Templeton (Kuroyume's DevelopmentZone). The Linux port was kindly done by Ruben Lopez. Previous releases and additional stuff can be found in the download section.
| ivy_generator_Win32_1.3.rar (4,259 KB) (23.03.07) | | ivy_generator_MacOSX_1.3.zip (8,797 KB) (23.03.07) | | ivy_generator_Linux_qt4_1.3.tar.gz (2,873 KB) (28.03.07) |
Feel free to use this tool in your projects! See also the FAQs!
The IvyGenerator v2/beta is still postponed.
Copyright (c) 2007 Thomas Luft. Last changes October 6, 2008. |
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Pavel Zoch
| Konja Urban(?)
| Tim Ellis
| Heika Hartela
| József Lipka
| Kirk Dunne
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Rainer Schmidt
| Curt Roth
| Daniele Del Grande
| Doro Forster
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Baz Mazur(?)
| Frédéric Boullier
| Antonio Casado
| Dieter Waibel
| Tom Schuelke
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Marcus Wengenroth
| Brian Looney
| Mark Dunakin
| João Félix
| Dave Davidson
| Jérôme Prévost
| Nicolas Wirrmann
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Grunio(?)
| Leonardo Merlos
| Marco Mosetti
| Michael Betke
| André Vieira
| Helton de Oliveira
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Jader(?)
| Tudor Schinagel
| Anthony McLin
| Hong Jin P
| Peter Christiansen
| Ziv Qual
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Richard Perrine
| Marion Goldschmidt
| Alejandro Ruano
| Dan Robo
| Derya Genç
| Giorgio Macellari
| Vitek Lasota
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Berthold Grünhagen
| Daniel Ackermann
| Espen Harildstad
| Jimmy Gunawan
| Davide Guldoni
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Thilo Ewers
| Dinamo Productions
| Diego Emanuel
| Robert Seidel
| Peter Guthrie
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Ramon Zancanaro
| Marcin Zemczak
| Camille Lymer
| Michael Ball
| Marc Gutowski
| Dean R. Robitaille
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Federico Zimbaldi
| Csaba Kanal
| Székely Tamás
| Andreas Dietz
| Mads Droschler
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Adán Martín
| Camille Lymer
| Krzysztof Cebula
| Dmitry Levin
| Gandoza
| Bjorn Malmberg
| Oliver Hatton
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| Thank you very much for your stunning feedback and the beautiful renderings! |
ivy_generator_Win32.rar (4,259 KB) (15.03.07)
ivy_generator_Win32_1.3.rar (4,259 KB) (23.03.07) |
ivy_generator_MacOSX.zip (10,565 KB) (18.03.07)
ivy_generator_MacOSX_1.2.zip (10,565 KB) (20.03.07)
ivy_generator_MacOSX_1.3.zip (8,797 KB) (23.03.07) |
| ivy_generator_Linux_qt4_1.3.tar.gz (2,873 KB) (28.03.07) |
ivy_generator_Textures.zip (7,006 KB)
set of textures including normal maps etc., kindly provided by Tim Ellis (sonix(at)btconnect.com) |
Ivy Generator tutorial
explains first steps using the Ivy Generator, kindly provided by Mark Dunakin (MD arts) |
Ivy Generator & Blender tutorial (at 4shared.com)
explains how to use the Ivy Generator in combination with Blender, kindly provided by Tim Ellis (sonix(at)btconnect.com) |
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May I use the Ivy Generator in a commerical project? May I use my results (renderings and meshes) in a commerical project?
Yes, you are allowed to do that.
Can I somehow support this project?
Yes, you can. Please, visit www.loim.de/ivy_generator_donation
Is there a manual for this tool?
The current release of the Ivy Generator contains only a basic instruction (see readme.txt). Future releases will of course have a more detailed manual.
The import does not work properly - my scene looks somehow cluttered. What can I do?
The current release of the Ivy Generator supports only triangular faces. Thus, you have to triangulate your mesh before importing.
The ivy is growing very slow. What can I do?
Please consider the possiblity of using simpler proxy geometry for the Ivy Generator. The growing performance depends strongly on the complexity of your scene.
I can't see the ivy growing - it is growing inside my objects. What can I do?
Please press 'flip normals' after importing your scene, and try again.
Is it possible to create another ivy without closing and re-opening the Ivy Generator?
Simply place a new root - double-click in your scene. Then the existing ivy will be deleted and you can grow a new one.
The exported files are HUGE. What can I do?
Future release will provide LOD techniques for this complex kind of mesh. By the way, you don't have to wait until the ivy is completely grown - by pressing the 'grow' button again, you can stop it whenever you want.
The exported files are empty. What can I do?
Please press 'birth' before exporting.
Can you please implement feature x?
The current release of the Ivy Generator is unsupported. Feel free to send me your feedback for future releases.
Do you plan to write a plug-in for software x?
Future releases will have a plug-in friendly software structure. If you are interest in writing a plug-in version for a specific package, please let me know.
Does this software run on a 64bit operating system or Microsoft Vista?
The current release was not tested on such a system so far.
I can not see any textures within the Ivy Generator?
Some former graphic cards do not handle textures of arbitrary size. Please, try to rescale the textures to a power of two format, e.g. 256 x 256 pixels.
I did not find an answer...
Feel free to write me an email ;-)
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