algorithmic modeling for Rhino

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Comment on: Topic 'Equal distance between points+finding support using Galapagos': reaky thing consisting from triangulated "modules" (i.e an assembly out of this, this and that) where the exterior edges ARE always under tension (= SS 304/316 cables OR nylon) and the interior ones MAY be under compression ( = steel, aluminum, wood, carbon) OR ... some of them ...may be under tension. Bastardized T trusses deviate a bit from theory ... but who cares? (not me anyway). T trusses have many variants (but as the greatest ever said: Less is More). 2. Large scale T for AEC is the art of pointless since it costs around the GNP of Nigeria. Here's some indicative components from a module of a multi adjustable TX system costing (the module) ~ the price of my Panigale (Google that): The above is mailed to a friend who has MIT (yes, that MIT: the top dog) on sight ... therefor he needs some appropriate "credentials", he he. 3. The distance that separates the above with the demo TDT node provided is around 666.666 miles - but we don't care: we are after Art not some testimony to vanity. 4. On purpose I've used a smallish ring to give you a clear indication upon the constrain numero uno in truss design: CLASH matters. 5. You'll need: (a) A decision related with the tensioners (classic Norseman + SS cables or nylon machined thingies?). (b) A machinist who can do elementary stuff (like the adapters) and can weld this to that (the "ring" for instance). His abilities must be 1 in a scale of 100. If the fella has a computer (not a CRAY) and he knows what 3dPDF is (hmm) ... well ... use that way to communicate with him PRIOR designing anything: He must agree on the parts BEFORE the whole is attempted (as a design in GH or in some other app). (c) A carpenter with a wood lathe for the obvious. BTW: BEFORE doing any TDT attempt > ask the carpenter about the available wood strut sizes. Against popular belief DO NOT varnish the wood (use exterior alkyd/oil stains from some top maker like the notorious US company PPG). http://www.ppgpaints.com/products/paints-stains-data-sheets (d) Good quality cigars (and espresso) plus some classic music (ZZTop, PFloyd, Cure, Stones, U2 etc etc) during the assembly. (e) Faith to the Dark Side (see my avatar). May the Force (the dark option) be with you.…; Added by peter fotiadis at 12:09am on December 12, 2015

Comment on: Topic 'Extract a polyhedron from a mesh or point cloud': st variety of papers (mostly related with LIDAR airborne sampled clouds) ... but ... hmm ... no code (other than some "abstract" algos that may (or may not) work). Reason? A very hot cake that one these days: from reverse engineering to DARPA founded future defense systems and up to cruse missiles pattern recognition algos. The solution (obviously doable only via code) is the so called flat hard clustering ... were points are sampled into clusters based on the coPlanarity "rule". For large amounts recursive octTrees (an oriented box divided in 8 "partitions") subdivisions are used and then pts are processed in parallel (and then clusters are re-evaluated in order to "absorb" other clusters with same plane A,B,C,D vars etc etc). See what's happening in a very carefully made test point collection: 3.7 ms and the "ideal" clustering (7 search loops VS the max 42M theoretical threshold): Depending on the pts "preparation" ... a considerable more time/search loops is required ... and ... well ... also "valid" clusters (4 points and up) made: So "ideally" speaking in your case: 1. Mesh faces center points (or alternatively: mesh vertices) are sampled into a pts collection . 2. Hard flat coPlanarity clustering is attempted yielding pts/planes in equivalent DataTrees. 3. Planar Breps are made with respect the planes (like the black things captured above) and sampled, say, into a breps List. 4. The method Brep[] solids = Brep.CreateSolid(breps); is used for attempting to create your desired "engulfing" brep. This method is very slow mind (other waaaay faster approaches also available). …; Added by peter fotiadis at 2:26am on August 17, 2016

Topic: How do I decompose 2 intersecting surfaces then recompose as 1?: nd the tool can create a single surface having the texture of the original input surfaces. (Visualize two waves interacting on the surface of a body of water.) But a surface intersection operations is producing unexpected results, putting my entire algorithm at risk of failing. I’ve enclosed a .GH that has a simplified version of the algorithm I intended to use to produce a single surface from the two input surfaces. How it works is to use the Brep | Brep component to generate a set of curves where the input surfaces meet. I then apply these cutting curves to a Surface Split component on each input surface. I intended to then programmatically cull the set of brep’s from the split operations, removing all those that aren’t on the face of the target surface. Finally, I would join all the remaining prep’s into a synthesized surface that reflects the facial interactions of the originals. This algorithm is however not completing successfully because the outputs of the Brep | Brep don’t appear to accurately reflect the complete set of curves at the intersections of the 2 faces. I think it’s because of these incomplete set of curves that the Surface Split operations are returning a very incomplete set of sub-surfaces. This sparse set of results don’t allow me to reassemble the sub-surfaces to form a complete synthesized face. This posting includes the Grasshopper document, as well as a screenshot of the GH code. The GH Intersection and split operations take a long time to complete. So I’ve enclosed Bake’d versions of the important geometries in the layers of the 3dm document as indicated below. But this results in a 12MB document, which is larger than the discussion can handle. But i can be downloaded from here. (my Google drive) Scaled Waves - Layer 1 Brep | Brep out - Layer 2 top Surface Split out - Layer 3 bot Surface Split out - Layer 4 I think there are problems in Rhino/Grasshopper related to intersections and splits. But I’m also open to somebody suggesting a better way to accomplish my objective — including workarounds. Thanks for any help, - Bob…; Added by neobobkrause at 8:46pm on August 31, 2016

Comment on: Topic 'SYNTACTIC Plugin': this common installation problem please find a tested remedy shared by one of the group members: Comment by Iman Sheikhansari on August 26, 2019 at 8:33amDelete Comment HiIf you are encountering a problem with rhino 6 versions don't worryFollow these steps.1. Download SYNTACTIC from https://sites.google.com/site/pirouznourian/syntactic-design2. Install it and go to the installation folder, Drag & drop SYNTACTIC(green one) over your grasshopper canvas.3. Close your rhino and reopen it. 4. Type GrasshopperDeveloperSettings5. Tick the Memory load *.GHA assemblies using COFF byte arrays option6. Run grasshopper and enjoy plugin I hope this helps, Best regards, Pirouz …; Added by Pirouz Nourian to Space Syntax at 9:43am on October 14, 2020

Event: CANactions II 2009: unity in Ukraine, which is orientated to contemporary architecture. The results of CANactions will be published in ACC magazine (link), on the web-sites of “Architectural club” (link), AB "ZOTOV&CO" (www.zotov.com.ua), Theme Theme of CANactions 2009 is emergent design techniques. This theme could include following architectural branches as Digital design, sustainable architecture and other sectors, which by the participants’ opinions, could be EMERGENT.??? Any architectural projects made earlier of specially for the CANactions’09 are allowed for submission. Presentation All the projects will be submitted in two phases: Phase 1 – selection of 10-15 participants of CANactions. Project has to be sent by e-mail to: (__) in PDF (not less then 300 dpi, not more then 10 Mb). Phase 2 –the CANactions participants prepare 15-20 min presentation of their projects (screen projector, microphone) and materials for the exhibition in House of Architect, Kyiv. The project has to be presented by author. -> exhibition is the first architecture biennale Presentation requirements: file should be composed in PDF format on A0 sheets, placed horizontal (not more then 1 sheets). This file should contain sufficient amount of the presentation graphic material, including text explanation up to 300 words. The raster images should have printing definition not less then 300 dpi. It’s recommended to avoid solid black fillings, because the projects will be printed on ink-jet printer. The presentation requirements could be changed after phase 1 results. The presentation materials should be made in Ukrainian (or Russian) and English. Verbal part can be presented in any language. Tarek Naga, Naga Studio, Los Angeles / USA (I can contact him - he will do it for free) Awards DIA (Dessau Institute of Architecture), Germany gives a prize: certificate for the education for 1 (2) semesters of Master-program in DIA for students and young architects (up to 30 years) from Ukraine. The decision about the prize winners will be made by selection board. Guests presentations - Daniel da Rocha DIA /Germany/ (flights, accommodation?). Theme: (scripting???) - Aleksandr Kalachev DIA /Riussian Federation/, Tudor Cosmatu DIA /Romania/, Irina Bogdan DIA /Romania/ - "Parametrically Defined Urban Patterns". - Grygorii Zotov DIA /Ukraine/ - “The Multicultural Columbarium”. - Armen Menendian /USA/ - "Blending Parametric Methods With Traditional Design: "The Danish Pavilion at Shanghai EXPO 2010". Exhibitions 1. Projects of 10 (15) CANactions participants 2. other projects: Zotov+Co Bollinger+Grohmann - structural eng. the very many C-Space Pavillon / alvin huang ala _ amanda levete studio anOtherArchitect student work, Charles Walker, AA Unit Pavillon Event schedule Phase 1: 01.07.2009 – start of the CANactions 2009 and beginning of projects submission. 16.08.2009 - dead-line of the project submission of phase 1. Phase 2: 17.08.2009 – announcement of the CANactions 2009 participants. 30.08.2009 – dead-line of submission of the CANactions 2009 exhibition materials. 14-26.09.2009 – exhibition of the CANactions 2009 projects in House of Architect, Kyiv. 25-26.09.2009 – CANactions 2009. 26.09.2009 - finnissage / announcement of competition winners for DIA study Contacts: canactions2009@gmail.com…; Added by Grisha Zotov at 6:32am on August 10, 2009

Comment on: Topic 'Modelled using Rhino/Construction Phase': re. I can point you to a couple of examples of structures at Expedition that we issued the primary set-out information to the contractor in digital form as a Rhino File. These particular structures necessitated this, trying to document tapered structures without "pure" mathematical setout would have been inefficient and problematic using traditional CAD drawings. You will need to have a close working relationship with the contractor/fabricator. For example, we would issue the entire model due various phases, and we used special line-type names assigned to layers to denote status such as "For Construction", "For Information", etc etc so that this information is clearly defined. Infinity bridge is a project everyone that was involved in was proud of, http://www.expedition.uk.com/index.php?pid=28 . All the setout of this form found dual arch bridge, that the box girder bifurcated over the centre support and tapered in size along it's length with inclined webs was defined in our Rhino model. Of course we still had to issue traditional 2d plans, elevations and sections (which were primarily exported line work from sectioning in Rhino), as builders don't generally walk around with laptops (and there was 3rd party checking, contract letting etc that don't work so well with digital models). Also, the Entrance Transfer Structure at 55 Baker Street - http://www.expedition.uk.com/index.php?pid=55 (First photo in sequence) was our first project in communicating to the contractor with Rhino models as primary set-out. Both of these projects were a success, but you have to be really careful and diligent with the models and the checking of them (not that that is any different to any drawing/model preperation). The slightest error could be quite costly if first detected when the project is on site being assembled. I can also say, that many of the tools for exchanging (importing and exporting) of structure models that you can try from http://www.geometrygym.com/downloads are being used by quite a few firms around the globe for more typical skeletal steel frame projects. Many of the analysis programs can then be used to transfer the structure directly to BIM like REVIT, and some custom spreadsheet formats allow transfer to/from Digital Project. I can't really say in public the projects these are being used on, but I can say they are renowned designers on quite high profile projects. Even if the tools are used for coordinating and checking with your Rhino model if you need to redevelop from scratch, they will save you time and effort, and a key aspect of the service of these tools is near immediate support with custom and bespoke aspects that your project demands. Feel free to get in touch if you wish to discuss this privately, I'm happy to try and help you if you desire. Cheers, Jon The Infinity Foot…; Added by Jon Mirtschin at 4:39am on March 6, 2010

Topic: Blog Grasshopper : défis collaboratifs: . Il m'arrive de l'utiliser dans mon cadre professionnel (structures architecturales) mais cela reste rare. J'ai pensé à une idée que j'aimerais bien développer, et j'aimerais savoir ce que vous pensez. Ce n'est pas un grand projet, juste une petite chose pour s'amuser. Evidemment absolument non lucratif. Je voudrais créer un blog ou un forum qui regrouperait une communauté, disons francophone, afin de "relever des défis grasshopper". Aucune compétition là-dedans, le concept serait assez simple : N'importe qui pourrait lancer un nouveau thread en proposant un défi grasshopper. Par exemple, comment créer ceci (sans passer par la boîte toute faite dans grasshopper) : ou cela : sous grasshopper, ou comment résoudre tel ou tel problème avec grasshopper ? Les exemples ci-dessous sont justes à titre informatif, il s'agit de choses déjà faites sur le web, et même sur ce forum. C'est uniquement pour illustrer l'idée. Ensuite le jeu consiste à ce que chacun cherche sa solution, soit en ne lisant pas celles des autres soit en le faisant, tout en cherchant la solution la plus élégante. Pour chaque problème logique, il pourrait être aussi proposé de trouver en plus une idée d'application dans la vie courante/design/architecture/méthode de fabrication ect.... Le but du jeu n'est pas de faire de la compétition avec les autres mais de chercher de façon ludique, collective et conviviale la plus belle solution afin d'améliorer les compétences de chacun en logique et en utilisation de grasshopper. Qu'en dites vous ? Qui serait intéressé et, soyons fous, qui serait partant pour m'aider à monter ça ? Bonne journée à vous, Marc…; Added by Marc to Grasshopper French Users Group at 9:28am on September 16, 2013

Topic: Help ! Metaballs to surface in between network of trees: getting answers for on the web. Our goal is to install a scientific research lab in a forest to study the proliferation of a deadly tree disease so we would like to design a sort of big cocoon that is in part randomly generated and that would wrap around the trees inside it similar to how the disease proliferates through the forest... Unfortunately, we are having a few problems modeling it on grasshopper, here are our questions : First off we have generated a grid on which we have attached vertical lines that represent the trees of the forest we are working on, we have also modeled a grid that is the dual to the first one (links the centers of the cells of the first grid together to form another grid). We have generated points of random z coordinates that follow the x and y coordinates of the second grid, and we have applied metaballs to those random points. 1. We would like to know how to create a surface from the curves generated by the metaballs in my grasshopper file ? 2. We would like to know if it is possible to push the surface away from the lines on the grid, as if there was a magnetic field pushing matter away from them ? we are hoping it would look a bit like this (the black lines being the trees and the big grey volume the surface wrapping around the trees, avoiding them) : If you have any ideas of a better way of representing what we want to model please let me know (or if it isn't well explained please call me out on that). What we like about our grasshopper file for now is that you can kind of change the sizes of the metaballs pretty easily, the fact that they are randomly generated and smoothly blend together, but if you know a better way of achieving a similar result please let us know! A few pics of what it looks like as of now : Here is our grasshopper file attached, to generate the metaballs you just have to make a point in the center of the very first cell of the larger grid, so the corner of the second grid, and link it to the point in the grasshopper file. Thanks, Sarah, Vincent and Nicholas…; Added by Nicholas Sandquist at 8:11am on October 13, 2016

Event: Responsive Surfaces Workshop _ LA 2012: faces2012la.eventbrite.com/ The Responsive Surfaces Workshop _ LA 2012 will explore the use of Grasshopper, Firefly and Arduino as creative and technical tools in the design, simulation and prototyping of intelligent building skins. Grasshopper, a free plug-in for McNeel’s Rhino modeler, allows designers to create adjustable parametric forms through graphic icons rather than programming. Firefly is a new set of comprehensive software tools dedicated to bridging the gap between Grasshopper, theArduino micro-controller, the internet and beyond. It allows near real-time data flow between the 3D digital and physical worlds, and will read/write data to/from internet feeds, remote sensors, connect with machine vision protocols, and more. Instructor: Jason Kelly Johnson, Firefly co-developer, Future Cities Lab and the CCA San Francisco Lecturer: Miles Kemp, President of Variate Labs and co-author of “Interactive Architecture” Additional Information: Workshop Location: 8451 Beverly Boulevard, Los Angeles, CA 90048 (GOOGLE MAP) Required Materials: Each participant should bring their own Sparkfun Inventors Kit or equivalent. Software: Please have the following software installed on your personal laptop computer - Rhino (SR9) + the latest versions of Grasshopper, Firefly and Arduino. …; Added by Jason Kelly Johnson at 4:02pm on January 2, 2012

Group: @it: ns, relationship, patterns and trends. The main feature is GIS data visualization utilizing spatial data sets in .shp (shape) format. There are three components for the spatial data visualization feature: shp@it category includes generic GIS tools; supports Point, Line, Polygon vector data format Feat@it: is a look-up component. Input .shp file, Outputs the list of attributes (features) in the given data set and the type of vector data set Import@it: imports to data into as Grasshopper objects that makes easier to query. Input .shp file, Outputs the shape items as system objects [this component organizes the contents of the data set into system.objects] DataVis@it: Visualizes and filters the data set, input the objects from Imp@it components. Outputs the curves, points, and related filtered attributes. IshpNYC: These are the NYC specific GIS tools (Open Data, .shp files) Footprint by Borough: Sorts the footprint data set of NYC buildings by borough. Data Binding: Binds two NYC data sets per common attribute; utilize NYC Tax property and Footprint vector data sets. Outputs shape object has combined attributes and geometry. NYCVis: Visualize and filter the data set, input the objects from Data Binding components. GeoCoder: Uses Google map api (no plugin needed but u need internet connection) Address Parser: Parses the bad address, returns the formatted addresses and location (latitude , longitude) Street View: Uses Coordinates (latitude , longitude) address parser and return the static street view on the active viewport. [new] Address Lookup: Reverse Geocoding, returns formatted address from Coordinates (latitude , longitude) [new] Statistics : [new]Coordinates2Statistics: Uses Coordinates (latitude , longitude) and returns Statistics of specified place such as Population, Elevation, land cover etc. [new] Open Street Map OSM: Components to parse OSM data, utilizes REST api [new] osm_Trace : Traces OSM and returns features. Projection types UTM or WGS84 [new] osm_3D_Bldgs: Returns 3D geometry of OSM buildings, uses UTM projection and draws in Rhino model units. [new] osm_Bldg_Info: Parse geojson data of OSM buildings, returns features/or tags. Go to food4rhino page to download the plug-in. …; Added by Elcin Ertugrul at 7:19pm on December 25, 2013