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majortom projects

<h2>welcome!</h2>

here you can find all my projects. many would be in so called beta state and i will post new versions sooner or later. feel free to comment on anything.

deworm
blob

smooth algorithm

flock
vvvv GUI
Metaballs plugin

deworm

my first project is clean 3d math...

deworm is a flexible node for creating wormlike meshes.

idea:

create wormholes or ankles and knees for IK bodies

version download

dd.mm.yy

http://www.vvvv.org/tiki-download_file.php?fileId=1142deworm v1.3.zip (52.45 Kb)</a>

16.05.07

new features:

Straight Cut pin - fixes appearance of displaced segments
http://vvvv.org/tiki-download_file.php?fileId=1113Deworm v1.2.zip (51.26 Kb)</a>

12.04.07

new features:

TwistFix pin (get rid of twisting segments)

hints about How Deworm Works added to Deworm module

fixes:

sections can be oriented in relation to each other - TwistFix

some performance improvements tnx to WestTricks collection

i've learned:

a lot about trigonometry in vvvv more...
http://vvvv.org/tiki-download_file.php?fileId=1080Deworm v1.1b.zip (46.16 Kb)</a>

22.03.07

new features:

Bin Size input (idea from diki & elektromeier )

bugs:

twisted segments bug - discussion
http://vvvv.org/tiki-download_file.php?fileId=1046deworm v1.0.zip (44.34 Kb)</a>

08.03.07

new features:

create worm body from custom geometry 2D sections

fixes:

index table creation

texturing is all right

i've learned:

pulling out index tables from ready made meshes

mesh apperance with flat shaders is really ugly and you can fix that - Reindex Module

http://vvvv.org/tiki-download_file.php?fileId=1042deworm.zip (12.97 Kb)</a>

03.03.07

bugs:

texturing is totally wrong

flops:

building the index table from scratch is really smart idea, but also - the very complicated one

(Click here if you want to add some comments)

<h2>comments:</h2>
It would be very cool if you can draw more than one worm with just one module... maybe add a binsize inlet which defines how many segment long one worm is. and what should happen with the end of the worm? open, filled, rounded? - elektromeier

blob

polygonising a scalar field

the challenge

polygonising a scalar field is an old idea from early ages of CG and solutions are easily found on the web. well known 'marching cubes' algorithm is really fast in code because it works almost entirely on lookup tables.

here is one good tutorial.

things are very different with vvvv. working with large spreads of data is slow and when I started to build the patch i didn't expect it to run in real time. then it looked it might become fast enough with some optimization. finally I landed somewhere in between (majortom to ground control...).

this is kind of pre-release. there is no help patch but two examples named TRY... one is with metaballs. i couldn't find better approach for metaballs yet so that one is very slow.
http://www.vvvv.org/tiki-download_file.php?fileId=1180TRY_blob.zip (24.44 Kb)</a>

smooth algorithm

because large 3D fields are huge spreads of data i have included somehow CPU expensive 'smooth' algorithm so it acts like a tradeoff for smaller fields. take a look:

8x8x8 field	16x16x16 field
512 cubes	4096 cubes
285 vertices	1047 vertices
469 triangles	1887 triangles
normal mesh

130 CPU	477 CPU
.
smoothed mesh

180 CPU	685 CPU
.
normal mesh (marching cubes algorithm overdefines mesh)

.
smoothed mesh