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Comment on: Topic 'Kangaroo Tensile structure facade !! Please Help me !!': r planet Utopia? 2. In what sort of animal these "shaders" are to be used? Meaning that designing a "Viz" control for 2345,67 mini-membranes is one thing and doing it for your house is a totally different challenge. In plain English: it's more than possible to hit the Wall if lot's and lot's of items are invited to the party (you bring the girls and I'll provide the Vodka). 3. Do you like the idea of completely separating (on a spatial basis) input/viz control (what is on display and on what level of "detail") from the core logic (i.e. components). Pros: obvious, Cons: obvious. 4. Is this def planned as a "constant" evolution thing? Meaning that using, say, the mapper isn't the best idea if your input goes from {a;b;c} to {a;b;c;d;g;...;z}. 5. Have you any - even academic - plans (see 1) to walk the walk up to the end?. Meaning talking to Birdair/Taiyo Kogyo etc etc ( http://www.birdair.br.com/ ). If yes be prepared because these fellas work a bit differently as regards potential collaboration and feedback at design phase. BTW: the thing that would change the world as you know it: http://www.birdair.br.com/tensileArchitecture/tensotherm.aspx best, Peter …; Added by peter fotiadis at 2:05am on May 26, 2014

Comment on: Topic 'triangular mesh frame optimization': ts (other than Kangaroo - if required). Anyway notify if you want some taste of them (but they are a bit "chaotic" : too many parameters etc etc ...). Warning: Almost all are written with MCAD apps in mind: GH is used SOLELY as a graphical editor/topology solver and just makes the simplest instance definitions possible in order to send them (via STEP) to some MCAD (Frank G uses CATIA/Digital Project as you may probably know, CATIA is my favorite toy as well) for actually designing the components and composing the whole. 2. "Equality" in modules (panels/glass/lexan) it's not an issue (other than aesthetics). I mean cost wise since modules are prepared via CNC these days. I wouldn't suggest to waste your time with "equality" puzzles and completely ignoring the big picture (real-life) that is FAR and AWAY from aesthetics. I mean: assume that I of someone else or Daniel can "equalize" things (up to a point): Is this sufficient for designing a similar real-life solution? In plain English: don't get occupied by the tree and ignore the forest. 3. As regards the frame in most of cases some MERO type of modular system is used: either a "flat" dome-like arrangement or a classic spaceframe or a hybrid system [push: tubes, pull: cables]. Hybrids are the most WOW (and costly) for obvious reasons. When properly done (and combined with a planar glazing system) THIS is the star of the show. 4. As regards the skin we use either "hinged" custom stuctural/semi structural aluminum extrusions (they can adapt to different dihedrals up to a point) or classic custom planar SS16L systems that also can adapt to dihedrals. A custom planar glazing solution is hideously expensive, mind (say: 1K Euros per m2). 5. Smart Glass tech (changes light transmission properties under the application of voltage) is gradually penetrating the market especially in future bespoke designs. So in a nutshell: these are "pro" territory - if I may use the term, thus I don't expect to find ANY similar "turn-key" solution in the very same sense that you can't find a tensile membrane turn-key solution. Meaning that practices that can do it ... er ... they keep the cookies for themselves. …; Added by peter fotiadis at 12:47am on March 7, 2015

Comment on: Topic 'Space Frame Mesh Modelling': ts (NOT meshes) using my (still WIP) BallPivot thingy (still highly temperamental despite wast quantities of Vodka consumed - in the Name Of Science, what else?): Watch this Forum for the forthcoming mother of all threads : Get Points > Do Something. On the other hand (real-life): 1. A truss without connectivity is nothing. 2. A truss without clash defection is nothing. 3. A truss without instance definition(s) is more than nothing. 4. A truss without (rather very complex that one, mind) roof/envelope stuff is nothing + pointless. 5. Mesh from points without a 1000% working ball pivot thingy is like 3rd marriage. And as you'll discover this Monday ... well ... "some" things would be MIA from the definition. Other than that: For Chap, David, Angel and anyone else interested on these freaky things (get points do something, that is). Do you people think that this (mode: dense [yellow stuff] ) has any meaning? VS that (mode: hex): I mean for the truss itself not the roofing paraphernalia. Notice that in this handsome hex mode we've already achieved max rigidity since we deal with tetrahedral stuff. PS: My aunt Drusilla finds the dense mode ... utterly pointless (and a bit disgusting). That's friends is the 1M question. …; Added by peter fotiadis at 4:28am on May 24, 2015

Topic: Grasshopper wishlist: he grouping of the sliders on the remote control panel. 4. Separate viewport(look at picture) 5. Cluster editor new wish My version grasshopper 0.8.0004 Best Regards,Valentin Kiev, Ukraine …; Added by Valentin at 12:41pm on October 13, 2010

Topic: The ultra mysterious perspective transformation: le] demo): 1. A transformation Matrix is a 4*4 collection of 16 values that "deform" 3d things according the values in the cells. The orthodox way is to deploy "cells" left to right and top to bottom. Rhino does the opposite (why?) hence we need the transpose method. 2. Since "translate" and "perspective" are "symmetrical" the transpose boolean toggle (within the C#) "flips" rows with columns ... so we get perspective or move. 3. When in perspective "mode" the vanishing points are computed internally within a min/max limit (per X/Y/Z axis) thus avoiding the usual havoc with "extreme" perspective angles (very common "glitz" in pretty much every CAD app - CATIA excluded). Vanishing points (and limits) are oriented with respect the pos/neg value of a given control slider. Note: slider values are percentages between min/max (mode: perspective) and/or actual values*100 (mode: move). 4.In order to start mastering the whole thing: don't change anything: just play with these 4 sliders selected: 5. The 123 sardine cans challenge: even with DeusExMachine = true (see inside C#: that one redirects the transformation per BrepFace and then joins the breps instead of applying it on a brep basis)... odd things (and/or invalid breps) occur ... thus what is required in order to make things working 100% ??. he, he best, Lord of Darkness …; Added by peter fotiadis at 1:10am on July 14, 2015

Topic: Energy modeling of a cylindrical tall building with diagrid structural thermal mass: find my initial files, reports and errors (Running E+ simulation on the initial setup took hours and ended up with numerous errors) I got a number of questions and would appreciate if you could answer them: 1- I have duplicated zones using "Honeybee Move". Is this the correct way to duplicate zones and if yes, should I rename all surfaces afterwards? I have renamed zones but not surfaces (The tower has 40 floors = 10 x typical group of 4 floors) 2- Should I convert all curvilinear objects to faceted geometry (or only windows and window-walls should be flat)? 3- In the next stage, I will add a second skin as the outer facade. Spiral structural elements (insulated thermal mass) are between interior and exterior areas, partly exposed to the sun. Should I split both interior and exterior zones to subtract these elements, and then solve the adjacencies? 4- To simplify the procedure and make it faster, I may simulate only 4 floors. Is it possible to force-hide the top roof and the lowest floor from the sun and other environmental factors? If yes, how? and do you know how much accuracy in the results would be lost in this case? 5- The outer skin would be all in glass, therefore in reality, the direct sun will affect the inner skin and the structural elements. I read somewhere that in HB+E+ simulations, direct sun turns to diffuse after passing the first layer of glass. Is that true? If yes, how can I make the inner skin exposed to direct sun in the simulation? Thank you very much for your time. Best, Aryan …; Added by Aryan Shahabian to Ladybug Tools at 3:07pm on June 4, 2016

Topic: Problem with Trim Solid: when the trimmed shapes (red) are small enough, they just dissapear. Then, the main shape (green) appears again, but as a trimmed shape (red). I tested it with other elements, like Solid Difference. It performs pretty well, but I just need the trimmed shapes (red) that are above the trimming shape (blue), and with Solid Difference, the collision also happens inside the trimming shape (blue), and that´s not what I am looking for. Attached some pictures of what I mean. I hope I made myself clear. Any suggestions?. Thanks a lot! 1- Good performance 2- Good performance (Without trimming shape) 3- Left side shows the cut on the main shape, but fail to show the trimmed shape (red) 4- Same on the right side 5- It shows everything but in red colour, as a trimmed shape …; Added by Javier at 12:04am on June 29, 2017

Topic: Time complexity; C#: t sure about my decision. Let's take a look at the method <createPopulation>: public static List<List<Point3d>> createPopulation(List<Point3d> cP, int populationCount) { List<List<Point3d>> Population = new List<List<Point3d>>(); // 1 for(int i = 0; i < populationCount; i++) //2 { List<Point3d> individual = cP.ToList(); // 3 Population.Add(individual); // 4 System.Security.Cryptography.RNGCryptoServiceProvider provider = new System.Security.Cryptography.RNGCryptoServiceProvider(); int n = Population[i].Count; while (n > 0) { byte[] box = new byte[1]; do provider.GetBytes(box); // 5 while (!(box[0] < n * (Byte.MaxValue / n))); int k = (box[0] % n); n--; Point3d value = Population[i][k]; Population[i][k] = Population[i][n]; Population[i][n] = value; } } In my algorithm there are lots of declarations like: List<Point3d> = new List<Point3d>(); or Random r = new Random(); these are constant time O(1) right? i = 0 executes once; i < populationCount executes (N+1) times; i++ N times this executes M times? because every point needs to be added individually? this one I don't really know; at msdn it is stated: If P:System.Collections.Generic.List`1.Count is less than P:System.Collections.Generic.List`1.Capacity, this method is an O(1) operation. If the capacity needs to be increased to accommodate the new element, this method becomes an O(n) operation, where n is P:System.Collections.Generic.List`1.Count. Shouldn't it be O(N), because I am adding every individual separately? can't find any statements about this one either, I am guessing it should be of constant time O(1), because just one random number is being generated? …; Added by Tülin Altinkaynak at 4:17am on June 13, 2017

Topic: Repeat datatree with branches.: ext 1:Text {2} 0:Text 1:Text 2:Text Datatree after repeat: {0} 0:Text {1} 0:Text 1:Text {2} 0:Text 1:Text 2:Text {3} 0:Text {4} 0:Text 1:Text {5} 0:Text 1:Text 2:Text ... Thank you for help…; Added by Nils Heinemann at 9:00am on December 6, 2016

Comment on: Topic 'questions about Outdoor Microclimate Map': hat, in accordance with this stable release, I have posted an updated version of this outdoor microclimate map example to the same link: http://hydrashare.github.io/hydra/viewer?owner=chriswmackey&fork=hydra_2&id=Outdoor_Microclimate_Map 1. You will see that, in the new file, I now have a single component that is able to turn a zone into a "ground zone" (similar to a plenum). To clarify, both the plenum and ground zone components set all of the loads of the zone to 0 (no internal heat gain). So this means that any of the characteristics of the default office program will be negated. From your comments, Grasshope, it seems that you understand that the reason why I have a ground zone defined in this model is to account for the variation in ground surface temperatures that can occur with different objects casting shade onto the ground. Therefore, the key property that defines this zone is the construction of the top surfaces, which is now changed based on a number that you input into the Ground Zone component. 2. You are correct in understanding the need for both "set zone construction" components in the old file. Because of the zone's position below the Rhino model origin, the walls and floor are defined as underground surfaces and so I need the extra "Set EP Ground Construction" component. Admittedly, the constructions on the underground surfaces should have a minimal effect on the modeling of the surface temperature above the zone (the roof construction is most important) but it made sense to me that results would be more accurate by setting all of the constructions of the zone to the ground material. The current Ground Zone component ensures that all surfaces of the zone are assigned the ground material construction. It also ensures that all walls and floor surfaces have a ground boundary condition regardless of where they sit in relation to the rhino model origin. 3. The distFromFlrOrSrf input can take either a number representing the distance from the floor of zones at which you would like to build a microclimate map or any surface on which you would like to see temperature variation. So the input is flexible and allow you to both build micro-climate maps quickly or take a longer time building them with more customization. For a visual of what you can do by inputting surfaces into this component, see this thermal animation of a section through a building that I designed for my thesis: https://www.youtube.com/watch?v=WJz1Eojph8E&list=PLruLh1AdY-Sj3ehUTSfKa1IHPSiuJU52A&index=3 For an example of a file using a numerical input for the microclimate map, see here: http://hydrashare.github.io/hydra/viewer?owner=chriswmackey&fork=hydra_2&id=Indoor_Microclimate_Map 4. The component has since been renamed (sometime in early July) to be called "Honeybee_Microclimate Map Analysis". Originally, I developed the component to help me understand thermal diversity within zones but realized after building it out that the same method could be used to give deeper understandings of the outdoor environment. So, at present, it can do both indoor and outdoor microclimate maps. The only shortcoming at present is that the outdoor microclimate map uses EnergyPlus's oversimplified means of accounting for outdoor wind (a simple wind profile that does nto account for obstructions). This shortcoming will be addressed once the first stable release of butterfly is out or I manage to work in components into LB that use the botlzman lattice particle collision method to approximate outdoor wind speeds. Other than this shortcoming, you can trust that all results you are getting from these components are to a high degree of accuracy (meaning that all air temperature and MRT values are accurate). 5. Thanks for pointing this out. This is a mistake in my labeling of the file names and I will fix this before the end of today. When you use the workflow with the PMV recipe, these values are actual PMV/PPD values. When you use the Adaptive comfort recipe, these values are "degrees from neutral temperature" and "Comfortable Or Not" values. When you use the workflow with the UTCI recipe, these values are also "degrees from neutral temperature" and "Comfortable Or Not" values but they are different for UTCI than they are for the adaptive model. Specifically, the neutral temperature and comfort zone for UTCI is defined to be the same as it is in this publication: https://www.ipma.pt/en/enciclopedia/amb.atmosfera/index.bioclima/index.html?page=utci.xml Hope this helps and let me know if you have any more questions, -Chris…; Added by Chris Mackey to Ladybug Tools at 8:32am on November 11, 2015