algorithmic modeling for Rhino
Plankton is a free and open library implementing the half-edge data structure for polygon meshes.
This way of storing the mesh connectivity information allows easier adjacency queries and supports mesh faces with any number of sides (Ngons), not just quads and triangles.
The plankton library is intended primarily to be referenced and used from scripts, but basic GH components for conversion and topology extraction are provided, and more may be added at a future date.
Plankton is still very much a work in progress. This is a first release, and methods/features will change in future versions.
Currently most of the methods relate to extracting topology information from existing meshes, and converting between Rhino meshes and Plankton meshes, but the intent is to over time add more ways of actually modifying and building meshes.
Please share your thoughts and ideas in the forum...
download the latest release here:
https://github.com/meshmash/Plankton/releases/latest
This library is distributed under the terms of the GNU Lesser General Public License (LGPL).
(The source is available on GitHub here)
Copyright 2013 Daniel Piker and Will Pearson
For more on half-edges, see:
http://www.flipcode.com/archives/The_Half-Edge_Data_Structure.shtml
http://openmesh.org/Documentation/OpenMesh-2.0-Documentation/mesh_hds.html
http://www.graphics.rwth-aachen.de/media/papers/directed.pdf
Thanks to the people I have had many conversations about meshes with over the last few years that have really helped inspire and inform this work: including: Daniel Hambleton, John Harding, Kristoffer Josefsson, Harri Lewis, Giulio Piacentino, and especially Dave Stasiuk, who also shared code that helped get this working.
Website: https://github.com/meshmash/Plankton
Members: 383
Latest Activity: Oct 9
Following on from the images I posted recently (here),I am now making available the source script for Cytoskeleton.First,…Continue
Tags: mesh, Plankton, Weaverbird
Started by Daniel Piker. Last reply by Serge Jul 31, 2020.
Hi,I’m using mesh machine to have a good triangulation of my mesh but I was wondering if I can set target valency for my edges in order to control triangulation. I want to have a triangulation where…Continue
Started by Contestables Jan 21, 2020.
Here are some demo's of remeshing with Plankton combined with some relaxation functions from Kangaroo.(Similar to what I described here: …Continue
Tags: remeshing, mesh, Kangaroo, Plankton
Started by Daniel Piker. Last reply by Contestables Jan 20, 2020.
Plankton 0.4.2. If I take any simple mesh object generated in grasshopper and convert it with the PMesh module, then try running the following python code, I get:for v in…Continue
Started by Cory. Last reply by Will Pearson Nov 27, 2018.
Comment
1. Solution exception:Could not load file or assembly 'Plankton, Version=0.3.4.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. The system cannot find the file specified.
after installing plankton I get this message. What to do? Thanks
Perfect. Thank you!
First off, just confirm that you've added both Plankton.dll and PlanktonGh.dll in "Manage Assemblies", and then added using Plankton; using PlanktonGh; in the usings.
Then, if you want to input a PlanktonMesh, you have to cast it from the default object type. If your input is called pmesh, then it would be something like this: PlanktonMesh myPMesh = pmesh as PlanktonMesh.
First time trying to write a C# script using a plankton mesh. I've connected the output of a PMesh component to the input of a C# component, and named that input "pmesh". Inside the script I'd like to call a method such as:
int count=pmesh.Vertices.Count;
However, I get an error that `object` does not contain a definition for `Vertices`.
Any advice?
Thanks,
Dave
@Will Pearson
Thank you!!!
@OrtlerMark
There used to be a documentation page with a description of each half edge operator, in addition to the GitHub page. I believe the location was here:
https://pearswj.co.uk/Plankton/docs/
I can get the info from the source files, but its not as easy.
@DavidBachmann
The source may help u...
https://github.com/meshmash/Plankton
Can someone help me find the documentation for Plankton's Halfedge data structure? I seem to have lost the link to it, and Google isn't helping.
Meshmachine works for me now with Kangaroo0099 on a different PC where I do not need admin rights to install software. Looks like that was the problem.
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