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Comment on: Topic 'Kangaroo matters (relaxing "shapes" to nurbs)': s mostly related with panelization. Panelization means many things, for instance (1.1) designing an aluminum facade system (most common case: "hinged" extrusion profiles that contain opaque or transparent materials - the "facets"), (1.2) designing insulation and final "coating" in roofs, (1.3) ... (1.n) continue at infinitum. 2. Let's stick to the least understood (and less glamorous) part : topic (1.2). The best core material for the core job is FOAMGLAS: http://www.foamglas.co.uk/building/applications/ 3. Most ignorants in our trade believe that the main point/task of a thermal insulation is the U thing. But in fact is the Dew Point (DP) management the most important of them all (DP = critical temperature at witch the relative humidity reaches saturation). Thus we arrive to the compact "roof" (or some compact "part" of the AEC thing) matter: (3.1): Dew point INSIDE the thermal insulation, (3.2): no thermal bridges, (3.3): no air from the application medium (say plywood, corrugated/flat sheets, special Foamglas Px panels etc etc) up to to the water proofing membrane(s) (say 2 layers of SBS bituminous membranes). Here's the most typical case of them all (special tapered inserts not shown - notice the cladding fixing method without perforating the sheets, no other insulating material can do that): 4. The above image brings us directly to Kangaroo matters (if we add the "liquid" thing meaning no linear geometry around). By "liquid" I mean that our working surface is no more "flat": In particular we must: (4.1) test if the corrugated sheets can follow the curvature (they can up to a point), (4.2) test if the FOAMGLAS panels (straight "boxes") can safely AND FULLY adhere to the medium without spending the GNP of Nigeria to do it (*), (4.3) test if the VM Zink (or Kalzip) cladding systems can cut the mustard - they are more flexible than the corrugated sheets (and can been tapered on-the-fly, Germans are very innovative on that matter) ... but... well ... you understand where the issue is, I do hope. (*) you can use 85/25 bitumen (cheap and nightmare to put it) or PC500 (very expensive and easy to apply). Obviously some mechanical fixing is required as well. And what is the most important test of them all? Well ... the 4.2 thing, what else? more soon. …; Added by peter fotiadis at 12:22am on August 2, 2014

Comment on: Topic 'Pinwheel fractual grasshopper': now. This V4 can sense if you feed it with your points and uses these instead of the p1,p2,p3 (it's a prelude for V5 that uses DataTrees of points making any surface subdivision a reality). Do the following: sample a triad of your points (NOT internalized) and feed the C# . Then ... start dragging these Rhino points around (the C# responds accordingly). See any difference? The topology: Well, the whole fractal logic (in this case) is to have 3 pts on hand (call them p1,p2,p3 : red, green, blue) and then project the "right" one, say, p3 to the Line (p1,p2) > do this > do that ... blah blah. But ... what p3? that's the 1M question: Here for instance the right p3 (blue) is (by accident) the 3rd point entered (it's obvious the "projection" recursive logic): but if you drag around a bit the points : p3 is now different (C# does this by sorting synchronously the triangle angles per point VS points) Numbers are used to indicate that "swift" : (0 for the new p1, 1 for the new p2, 2 for the new p3... etc). Compare with the initial points (red = ex p1, green = ex p2 , blue = ex p3). and again different: The 1M question: In fractal thinking the big thing is when to stop: I could obviously control that by a counter ... but here the requirement is the tile min size (within unpredictable amount of recursions) : this is what the stop logic used does. The 1B question: So ... implementing fractal logic (against DataTrees of points) to a parametric environment ... requires a lot of questions: because each time the size of the start triad varies ... whilst the stop condition is constant: meaning that with a little bit of "good" luck you can reach incredible high amount of tiles (computer out of memory > Adios Amigos). Obviously I'm taking having all possibilities in mind and especially big projects > big facades > millions (or zillions) of tiles > Armageddon > .... more soon …; Added by peter fotiadis at 8:34am on March 14, 2015

Comment on: Topic 'GHPython Some Bottlenecks (Bugs?)': ng in Grasshopper? As a general recommendation for developers in Grasshopper who are writing a part of their library which is performance-sensitive (please note: often the performance sensitive part is very limited) is to write it in C#, or maybe even C, or maybe even assembly :). Of course, the closer to the machine you will be, the easier it will be to harness all minimal optimizations. However, there is always a compromise between "getting things done" and "making them best" and this boundary is not very easy to catch, right? If you want to have significant speed improvements for numerical calculations, I would at least recommend developing with C# in a compiled component using Visual Studio or SharpDevelop. The reason is: in order to provide the line number of possible errors, Grasshopper compiles C# scripts in debug mode! They will be much less optimized than what is possible even with today's technology. This does not preclude keeping the project open-source, if that is one of your goals. Regarding the actual list: 1) Yes, the implied loop will probably be slower than just a simple for loop. This is because Grasshopper code has to keep track of more things than the ones you could be considering with your knowledge of of your very-special case. However, a factor of 10 is simply not acceptable and is likely a symptom of something else. In fact, I think I remember fixing a bug around that in Rhino WIP. However, it appears to be still slower also there. I've added a bugtracking item here. 2) If you are able to do all casts that are involved, and do them as Grasshopper does, please write that code that way. For example, if you supply a curve to an input with number hint, Grasshopper computes the length of the curve. There will have to be an "if" that checks if the input is a curve somewhere (or some similar construct). This aid for designers is what slows down the hint input. 3) Grasshopper has to keep side effects at bay. For example, components B and C are both connected to outputs of A. If you edit data in component B, and that data came from A you of course expect that data to be unchanged in C. This means that, for even lists of numbers, Grasshopper has to perform a deep copy of the output for each input. Otherwise, what happens if B sorts the list and C finds the index of the smallest number? This could be improved if GH components had some way of flagging themselves as non-data-mutating (constant). The fact that, by supplying special types, Grasshopper has no way of performing copies will likely speed things up. But be aware of possibly very annoying side effects creeping in if data is not immutable. Another option is performing the copy "optimally", just where you need it, because you know where your data is used. This is not information that is available to GH at present. Does this help? Thanks again for your input, Giulio--Giulio Piacentinofor Robert McNeel & Associatesgiulio@mcneel.com…; Added by Giulio Piacentino at 4:53am on May 14, 2015

Comment on: Topic 'Sorting / Selecting points on a diagrid': our students could taste first hand the Apocalypse (and/or the brave new world and/or the animal farm - depending on your point of view, he he). 2. First ... make a break and spend some time to play with the def attached. Of course comes straight from the Dark Side (no components of any kind). But you know what? ... sooner or later your students they must obey to the Dark Side ... or they'll extinct (future galloping you know ... I mean in a few years from now anyone not speaking some programming language > Homo heidelbergensis ). 3. This thingy attached works in 2 modes: (a) design a(ny) pattern (in a "flat" Plane.WorldXY) or (b) apply a(ny) pattern (in any given surface List). Start from here (diamond pattern, like the one used by you): Apply random Z noise (other pattern used): Or use surfaces (to make frames or their content among other things): Note: Although this def attached MAY appear off-topic ... there's a reason (other than using any pattern you like) that I provide this to you : because that way we can totally control nodes, edges and "facets" and therefor extract any plane imaginable and therefor place/manage any imaginable profile. Note: Of course using the make frames capability (and extruding these BrepFaces AT ONCE both sides) we could obtain "autonomous" [monocoque, so to speak] modular load bearing "panels" ready for assembly (instead of beams + nodes + plates + cats + dogs + why??) ... but this is not exactly what you've asked ... he he. more soon…; Added by peter fotiadis at 12:59am on June 5, 2015

Comment on: Topic 'crating a contolled curve': ints. Anyway this is made for AEC purposes (wavy roofs/envelopes and the likes) and is classified as internal (but I could provide a "light" version). To give you a very rough idea: C# rebuilds first any input list of nurbs > then samples the control points in a tree > then excludes (or not) the "peripheral" points (case: closed in U/V surfaces) > then "picks" some of them according a rather vast variety of options (~30) > then modifies these either individually (that's only possible with code and it's a bit tricky) or via any collection of push/pull attractors or randomly or ... > then "joins" the 2 sets together (modified + unmodified) > and finally does the new nurbs. Only 456 lines of code that one. With regard the Dark Side: C# would be my recommendation (P is ala mode, mind) for a vast variety of reasons (less than 10% of them are GH related). If you decide to cross the Rubicon: How to go to hell (and stay there) in just 123 easy steps: Step 1: get the cookies The bible PlanA: C# In depth (Jon Skeet). The bible PlanB: C# Step by step (John Sharp). The bible PlanC: C# 5.0 (J/B Albahari) > my favorite The reference: C# Language specs ECMA-334 The candidates: C# Fundamentals (Nakov/Kolev & Co) C# Head First (Stellman/Greene) C# Language (Jones) Step 2: read the cookies (computer OFF) Step 3: re-read the cookies (computer OFF) ... Step 121: open computer Step 122: get the 30 steps to heaven (i.e. hell) Step 123: shut down computer > change occupation/planet May The Force (the Dark Option) be with you. …; Added by peter fotiadis at 12:50pm on June 13, 2015

Comment on: Topic 'Ladybug_AdaptiveComfortCalculator-Issue': onents to the latest version and, as you can see, everything works fine: Over the next week, I am going to be adding in several new capabilities to the Adaptive model in LB+HB that are not an official part of ASHRAE or ISO standards but they are endorsed by the experts and researchers who have helped build the standards. Mostapha, I will be sure to have the component give a comment any time that these un-standardized methods are used and I will be clear that I have made them a part of LB because I have found these insights from new research to be particularly helpful to design processes for passive architecture. Also, I think many of us recognize that both ASHRAE and ISO were initially founded to produce standards for conditioned or refrigerated spaces and that, understandably, they . Among the features that I will be adding in: 1) You will have the option of using either the American ASHRAE adaptive model or the ISO EN-15251 model (see the CBE's comfort tool for a visual of the differences - http://comfort.cbe.berkeley.edu/). 2) In addition to a different comfort polygon, the European standard also uses a "running mean" outdoor temperature instead of the average monthly outdoor temperature. This "running mean" is computed by looking at the average temperatures over the last week and weights each of the daily average temperatures by how recent it is. This makes more sense to me than the ASHRAE method and addresses the issue that you bring up, Alejandro. Needless to say, the updated adaptive model will allow you to use either a running mean or average monthly temperature with either the American or European polygon. 3) The WIP adaptive chart currently has an option for a "levelOfConditioning". This input allows you to make use of research the was conducted along-side the initial development of the adaptive model, which showed that the findings did not contradict the PMV model when people were surveyed in fully conditioned buildings. This parallel research ended up producing a different correlation between the outdoor and desired indoor temperatures and this correlation had a much shallower slope than the official adaptive model for fully naturally-ventilated buildings. The levelOfConditioning allows you to make a custom correlation for full natural ventilation, full conditioning or (presumably) somewhere in between for a mixed-mode building. This levelOfConditioning will become an official input for all LB components using the adaptive model (not just the chart at the moment). At the end of all of this, I will put together a new video series on Adaptive comfort so that we are all on the same page about how to use the model. -Chris…; Added by Chris Mackey to Ladybug Tools at 1:06pm on July 4, 2015

Comment on: Topic 'Offset curve C#': Send Feedback Defines enumerated values for all implemented corner styles in curve offsets. Namespace: Rhino.GeometryAssembly: RhinoCommon (in RhinoCommon.dll) Version: 5.1.30000.12 (5.0.20693.0) Syntax C# public enum CurveOffsetCornerStyle Visual Basic Public Enumeration CurveOffsetCornerStyle Members Member name Value Description None 0 The dafault value. Sharp 1 Offsets and extends curves with a straight line until they intersect. Round 2 Offsets and fillets curves with an arc of radius equal to the offset distance. Smooth 3 Offsets and connects curves with a smooth (G1 continuity) curve. Chamfer 4 Offsets and connects curves with a straight line between their endpoints. …; Added by Daniel González Abalde at 8:54am on August 30, 2015

Comment on: Topic 'How to get one branch out of a tree and store it in a list? in C#': ... er ... hmm ... I would strongly suggest Plan B: How to get the gist of C# in just 123 (+1) easy steps (I've already posted that 3-4 times if memory serves well): Step 0: get rid of the computer (press the OFF button), buy some cigars: Step 1: get the cookies The bible PlanA: C# In depth (Jon Skeet). The bible PlanB: C# Step by step (John Sharp). The bible PlanC: C# 5.0/6.0 (J/B Albahari) > my favorite The reference: C# Language specs ECMA-334 The candidates: C# Fundamentals (Nakov/Kolev & Co) C# Head First (Stellman/Greene) C# Language (Jones) Step 2: read the cookies (computer OFF) Step 3: re-read the cookies (computer OFF) ... Step 120: re-read the cookies (computer OFF) Step 121: tun ON computer Step 122: do something Step 123: shut down computer permanently, forget all that May The Force (the Dark Option) be with you.…; Added by peter fotiadis at 10:58pm on September 3, 2015

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 'complicated curve to surface': s, Mesh Pleated Inflation". I am not an expert of this way of modelisation (first time today) but it is named funicular. Almost 2 ways 1) Kangarooo from Daniel Piker , see example 2) http://www.grasshopper3d.com/profiles/blogs/finding-funicular-forms-using-the-dynamic-mass-method I propose you a script, far from the real one but could help you to build a surface like you want, a smooth one. The real is not like that it has a lot of V shapes. 1) draw on XY plane the main lines of the structure 2) draw surface with rhino with corner points. Always with the same way in order to have U and V aligned correctly. 3) extract fixed edges with rhino (yellow here) put them on a specific layer 4) F10 => select all control point except edges moves them upper (z > 0) I gave you an example far from perfect at this time. It uses kangaroo. Open rhino first followed by GH script. Ways to improve : In real shapes begin in zigzag. Surface must be added to kangaroo, surely through mesh... play with goals of Kangaroo ... …; Added by Laurent DELRIEU at 3:40pm on December 13, 2015