algorithmic modeling for Rhino

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Comment on: Topic 'Multiple breps with Meshmachine': h, and using the BScale and BDistance are creating havoc somehow too. I've simplified first, and used the Kangaroo Frames component along with setting internal iterations, to make MeshMachine act like a normal component, along with releasing the FixC and FixV. The FixV didn't make any sense anyway. I've also set Pull to 0 to speed it up during testing, since much less calculation is involved to just let the meshes collapse, prevented from disappearing altogether by using a mere 15 iterations. Also, your breps are open so that allows much more chaos and then collapse, though they did manage to close themselves too at times. Here is closed breps with a full 45 iterations: So now that it's working, lets re-Fix the curves, and the problem arises that there is an extra seam line that is getting fixed too, running along the cylinder, stopping the mesh from pulling tight under tension wherever a vertex happens to be near that line: So lets grab only the naked edge curves instead: And what happens if we lose the end caps, now that we don't have an extra line skewing the result?: There is no real curvature differences since it's not a curvy brep so the Adapt at full 1 setting has little to do. Now what does the BScale and BDist do? Nothing! Why? Your scale is out of whack, 99 mm high cylinders but only a falloff maximum of about 5, so let's make the falloff be 25 instead, but I must restore the end caps or the meshes collapse away for some reason and freezes Rhino for a minute or so the first time I try it: It's a start. If I intersect the cylinders, nothing changes, since they are being treated as separate runs. MeshMachine outputs a sequence of two outputs though, due to Frames being set to a bare minimum of 2 needed to get it to work, so I filter out the original run, which is just the unmodified initial mesh it creates. The lesson so far is that closed meshes are much less prone to collapse and glitches leading to screw ups. A Boolean union of the cylinders is when it gets funner, here show with and without the fixed curves that seem to define boundaries too where really there are just polysurface edges: …; Added by Nik Willmore at 6:54am on July 29, 2015

Comment on: Topic 'Square to Circle morph or loft? - solved': owing a tutorial is easy and adapting the idea of it again - it's not a fuss - i guess my skills are at 1 - since I can not yet stand alone! However I am very determined to nail this program to the ground and be at a 9 by Easter - of course that means a lot of work and hours testing - but I am young and ambitions! I am a revit user and I just switched over (from the dark rigid side) to rhino because of a simple math problem which has to do with variations and combinations. I am investigating the form factor for my thesis. Form factor= building envelope (the area of the facade+the area of the roof+the area of the footprint)/the total area of the floors. I have started by defining a specific set of parameters such as height, number of floors, maximum total floor area so I can compare the results. Therefore the floating number will be the facade area - which in the end, considering the height is a constant - ends up being just the length of a certain shape - circle, square, triangle ... I have done the calculation through excel after extracting from revit but only on simple shapes as follow(the following examples are my own analyzing work): My problem is: I need a way to get all possible shapes that meet the criteria i put in - which at the moment will be defined by square meters of a floor- that is why galapagos comes in - I need it to make all possible combinations that can be computed that meet the criteria - so then the user(myself or who ever else want to use it) can make an informed choice. I am not looking for a square - circle, sphere or anything I can manually create by just using basic geometry, I am looking for all the possible combination that equal the same area. (plan view) After i can solve it for one level - i will constrain that all the levels add up have specific total area - so if a level get's bigger in size another one gets smaller. Again run it through Galapagos and get all possible outcomes (like the sections below) I am aiming to get an outcome from which you have options to pick out of -> a design process not a specific shape. You are thinking too complex - not that it's a bad thing - but I am looking for something more simplistic than that. I need a shape - windows and panels are for later use in my process and at this early stage completely irrelevant - and that will be another percentage math problem rather than aesthetics. I just need shapes to morph based on input parameters. I hope this was an interesting read for you and I really appreciate your patience with me.…; Added by Stefania Dinea at 3:30am on December 23, 2015

Comment on: Topic 'blend surface / curve network / fillet': I wanted to use it for a client, really I can't since they will freak out about a weird version of Rhino being needed. http://discourse.mcneel.com/t/scripting-blendsrf/24635 http://mcneel.myjetbrains.com/youtrack/issue/RH-29978 What you call trivial is the core of your business, the core of your product, meaning Grasshopper user ability to access serious commands or not. This is, after all, one of the most important commands in the entire Rhino universe. Without it, I have to just completely abandon NURBS and edit meshes since I can't join surfaces smoothly so I have to stop using fragments at all and only meshes afford local detail well compared to single NURBS surfaces. Only polysurfaces can mix in little high UV count blends to deal with tight local detail. I guess I'll switch to the WIP now. Test that, and just tell clients, hey, that's life. It's not exactly easy to find the WIP download, being a hidden "Serengeti" topic on the main Rhino forum, but I can offer the membership link. http://discourse.mcneel.com/t/how-do-i-actually-download-serengeti/23846 http://www.rhino3d.com/download/rhino/wip I had to manually install IronPython 2.7.5 too, to fix a broken Python system: http://ironpython.codeplex.com/releases/view/169382 Now, where on Earth do I find the Rhinocommon manual for Rhino 6 WIP? I guess it's within the main Rhino EditPythonScript editor, though that can't be searched like a normal manual: CreateBlendSurface(face0: BrepFace, edge0: BrepEdge, domain0: Interval, rev0: bool, continuity0: BlendContinuity, face1: BrepFace, edge1: BrepEdge, domain1: Interval, rev1: bool, continuity1: BlendContinuity) -> Array[Brep] Makes a surface blend between two surface edges. face0: First face to blend from. edge0: First edge to blend from. domain0: The domain of edge0 to use. rev0: If false, edge0 will be used in its natural direction. If true, edge0 will be used in the reversed direction. continuity0: Continuity for the blend at the start. face1: Second face to blend from. edge1: Second edge to blend from. domain1: The domain of edge1 to use. rev1: If false, edge1 will be used in its natural direction. If true, edge1 will be used in the reversed direction. continuity1: Continuity for the blend at the start. Returns: Array of Breps if successful. Now I have normal, productive homework, of figuring out how to specify edges from a Python script. I'll just sell this extra special capability of Rhino 5 WIP from Grasshopper as a cutting edge advanced new feature other lowly consultants can't match, assuming I can get it to work first. The initial strategy is to Grasshopper create discrete surfaces, blow holes in a parent surface, scale down and move the little surfaces away, and just blend everything together into a polysurface. Then a client won't freak out so badly when I show them how to use meshes instead, since at least there's an alternative straight from NURBS, that maybe isn't as creatively open ended, but will get them out of a bind if their own client freaks out about meshes converted to NURBS via ZBrush ZRemesher run through T-Splines to get a smooth NURBS polysurface surface that looks like odd patchwork. Alas, the above Rhinocommon blurb is incomplete, lacking info about what values for continuity are defined as, such as position, tangency, or curvature. I guess I'll just use try numbers. …; Added by Nik Willmore at 1:55pm on March 27, 2016

Topic: Copy+Rotate: copies of a square, but each copy rotated according to a desired angleHelp me please! Great Sorry for my bad english!…; Added by Daniel de Berna at 4:14am on February 14, 2011

Topic: Surface Panelization: e following tutorial: http://digitaltoolbox.info/grasshopper-intermediate/offset-scale/ I think the beginning is correct because I have the same things. However, at the last step I can't correctly generate the tabs for assemble this shape. I try to put "flatten" everywhere but it doesn't work ... If someone just give me a little help please ? Or check if everything is okay? Or if there is an another tutorial ? Or if the question has already been asked in this forum ? I take! I'm really sorry if my problem is not very interesting but I'm new ... Yours, Anna, windows 7 on bootcamp Rhino 5 Grasshopper O.8.0063 Files : Shape.3dm Shape.gh …; Added by Anna at 3:12pm on December 20, 2011

Topic: Formatting Numbers in Grasshopper: and where the decimal place should be. The reason it only shows the first 5 numbers that make up 1,000,000 is because anything smaller than 100 is considered insignificant when talking about 1 million. Think of it like this if 1 million represents an Olympic size swimming pool then 10 would represent the volume of a full tank of petrol for an average family car. You would have to stand there for an extremely long time to fill up the pool from a petrol pump. It's important to know that these insignificant digits are still there for the purpose of calculations but are just not being displayed. There are times when you may want to display these numbers in a format that makes more sense, for these occasions we can use the Format() function. Format() Function For versions BEFORE 0.9.0001 the VB Format Function is available through the Expression Components found on the Math Tab > Script Panel Either by using the F input* or the Expressions Editor found on the Context Menu you can apply a format mask to the x input. * except FxN Anatomy of the formatting function above: Format(..............................) <-- VB function Format("........................."....) <-- Display String Format("{0....................}"....) <-- Place Holder for first variable Format("{0:0.000000000}"...) <-- Format Mask for 9 decimal places Format("{0:0.000000000}", x) <-- Variable This can be applied to points and their components: For versions AFTER 0.9.0001 there is a dedicated Format Component or you can use the Expressions Components successor Evaluate. For more information on the tags used in the Format Function see these links. Standard formatting tags Custom formatting tags WARNING: If you format a number to be displayed in this way it becomes a string and will no longer have the complete Real number available for calculations. Always use the input to the format function for further requirements in calculations.…; Added by Danny Boyes at 5:58am on May 22, 2012

Comment on: Topic 'DataTree(of object) > GH_Structure(of ?)': 3. receiver gets data from sender via input (0) < the data here may be changed in the meantime, for instance if its a double then I would like to add 1 to it. 4. receiver sends data to sender's input(2) 5. go to 1. VS 2013 studio project folder SENDER Public Class loopStart Inherits GH_Component Dim cnt As Integer Friend Property counter() As Integer Get Return cnt End Get Set(value As Integer) cnt = value End Set End Property Dim iData As New GH_Structure(Of IGH_Goo) Friend Property startData() As GH_Structure(Of IGH_Goo) Get Return iData End Get Set(value As GH_Structure(Of IGH_Goo)) iData = value End Set End Property Public Sub New() MyBase.New("loopStart", "loopStart", "Start the loop with this one.", "Extra", "Extra") End Sub Public Overrides ReadOnly Property ComponentGuid() As System.Guid Get Return New Guid("bdf1b60d-6757-422b-9d2d-08257996a88c") End Get End Property Protected Overrides Sub RegisterInputParams(ByVal pManager As Grasshopper.Kernel.GH_Component.GH_InputParamManager) pManager.AddGenericParameter("Data", "dIn", "Data to loop", GH_ParamAccess.tree) pManager.AddIntegerParameter("Steps", "S", "Number of loops", GH_ParamAccess.item) pManager.AddGenericParameter("<X>", "<X>", "Please leave this one alone, don't input anything.", GH_ParamAccess.tree) pManager.Param(2).Optional = True End Sub Protected Overrides Sub RegisterOutputParams(ByVal pManager As Grasshopper.Kernel.GH_Component.GH_OutputParamManager) pManager.AddGenericParameter("Data", "dOut", "Data to loop", GH_ParamAccess.tree) End Sub Public Overrides Sub CreateAttributes() m_attributes = New loopStartAttributes(Me) End Sub Protected Overrides Sub SolveInstance(ByVal DA As Grasshopper.Kernel.IGH_DataAccess) Dim numLoop As Integer DA.GetData(1, numLoop) Dim loopDt As New Grasshopper.Kernel.Data.GH_Structure(Of IGH_Goo) If cnt = 0 Then Me.startData.Clear() DA.GetDataTree(0, Me.startData) loopDt = startData.Duplicate DA.SetDataTree(0, loopDt) End If If cnt < numLoop - 1 And cnt > 0 Then DA.GetDataTree(2, loopDt) DA.SetDataTree(0, loopDt) Me.ExpireSolution(True) Else DA.GetDataTree(2, loopDt) DA.SetDataTree(0, loopDt) End If cnt += 1 End Sub End Class RECEIVER Public Class loopEnd Inherits GH_Component Dim aData As New GH_Structure(Of IGH_Goo) Friend Property anyData() As GH_Structure(Of IGH_Goo) Get Return aData End Get Set(value As GH_Structure(Of IGH_Goo)) aData = value End Set End Property Public Sub New() MyBase.New("loopEnd", "loopEnd", "End the loop with this one.", "Extra", "Extra") End Sub Public Overrides ReadOnly Property ComponentGuid() As System.Guid Get Return New Guid("3ffa3b66-8160-4ab3-87c9-356b2c17aadd") End Get End Property Protected Overrides Sub RegisterInputParams(ByVal pManager As Grasshopper.Kernel.GH_Component.GH_InputParamManager) pManager.AddGenericParameter("Data", "dIn", "Data to loop", GH_ParamAccess.tree) End Sub Protected Overrides Sub RegisterOutputParams(ByVal pManager As Grasshopper.Kernel.GH_Component.GH_OutputParamManager) pManager.AddGenericParameter("Data", "dOut", "Data after the loop", GH_ParamAccess.tree) End Sub Protected Overrides Sub SolveInstance(ByVal DA As Grasshopper.Kernel.IGH_DataAccess) Me.aData.Clear() DA.GetDataTree(0, Me.aData) runner() DA.SetDataTree(0, Me.aData) End Sub Sub runner() Dim doc As GH_document = Grasshopper.Instances.ActiveCanvas.Document Dim docl As list(Of iGH_DocumentObject) = (doc.Objects) For i As Integer = 0 To docl.count - 1 Step 1 Dim comp As Object = docl(i) If comp.NickName = "loopStart" Then Dim compp As IGH_Param = comp.Params.input(2) compp.VolatileData.Clear() compp.AddVolatileDataTree(anyData) Exit For End If Next End Sub End Class …; Added by Mateusz Zwierzycki at 2:47pm on November 28, 2013

Topic: Ladybug Solar Water Heating components released !: option, after downloading check if .ghuser files are blocked (right click -> "Properties" and select "Unblock"). Then paste them in File->Special Folders->User Object Folder. You can download the example files from here. They act in similar way, Ladybug Photovoltaics components do: we pick a surface, and get an answer to a question: "How much thermal energy, for a certain number of persons can my roof, building facade... generate if I would populate them with Solar Water Heating collectors"? This information can then be used to cover domestic hot water, space heating or space cooling loads: Components enable setting specific details of the system, or using simplified ones. They cover analysis of domestic hot water load, final performance of the SWH system, its embodied energy, energy value, consumption, emissions... And finding optimal system and storage size. By Dr. Chengchu Yan and Djordje Spasic, with invaluable support of Dr. Willian Beckman, Dr. Jason M. Keith, Jeff Maguire, Nicolas DiOrio, Niraj Palsule, Sargon George Ishaya and Craig Christensen. Hope you will enjoy using the components! References: 1) Calculation of delivered energy: Solar Engineering of Thermal Processes, John Wiley and Sons, J. Duffie, W. Beckman, 4th ed., 2013. Technical Manual for the SAM Solar Water Heating Model, NREL, N. DiOrio, C. Christensen, J. Burch, A. Dobos, 2014. A simplified method for optimal design of solar water heating systems based on life-cycle energy analysis, Renewable Energy journal, Yan, Wang, Ma, Shi, Vol 74, Feb 2015 2) Domestic hot water load: Modeling patterns of hot water use in households, Ernest Orlando Lawrence Berkeley National Laboratory; Lutz, Liu, McMahon, Dunham, Shown, McGrue; Nov 1996. ASHRAE 2003 Applications Handbook (SI), Chapter 49, Service water heating 3) Mains water temperature Residential alternative calculation method reference manual, California energy commission, June 2013. Development of an Energy Savings Benchmark for All Residential End-Uses, NREL, August 2004. Solar water heating project analysis chapter, Minister of Natural Resources Canada, 2004. 4) Pipe diameters and pump power: Planning & Installing Solar Thermal Systems, Earthscan, 2nd edition 5) Sun postion and POA irradiance, the same as for Ladybug Photovoltaics (Michalsky (1988), diffuse irradiance by Perez (1990), ground reflected irradiance by Liu, Jordan (1963)) 6) Optimal system and storage tank size: A simplified method for optimal design of solar water heating systems based on life-cycle energy analysis, Renewable Energy journal, Yan, Wang, Ma, Shi, Vol 74, Feb 2015.…; Added by djordje to Ladybug Tools at 8:05am on December 8, 2015

Event: DISEÑO PARAMÉTRICO [GRASSHOPPER]: uier momento del diseño de un modelo 3D y este se readapta sin necesidad de redibujar la zona alterada. Otra de las principales características del trabajo paramétrico es que nos permite automatizar procesos de trabajo o diseño. Esto quiere decir que, con procesos sencillos, podemos generar geometrías complejas y siempre justificadas en función de unos parámetros que nosotros definamos; lo que, en cierto modo, elimina la arbitrariedad en el diseño y nos arma de argumentos en la toma de decisiones de proyecto. Por otro lado, se pueden generar texturas y patrones de manera aleatoria o variable en función de atractores. Tras la realización de este workshop, el alumno será capaz de desarrollar sus propias gramáticas, con la confianza que da comprender los términos básicos de programación sobre los que se apoya todo el sistema de trabajo de Grasshopper. Grasshopper nos abre todo un mundo de posibilidades en el diseño y en la fabricación digital. PARA QUIÉN El workshop está dirigido a estudiantes y profesionales de la arquitectura, el interiorismo, la ingeniería, el diseño de producto, el diseño industrial y, en general, perfiles creativos y disciplinas artísticas que quieran introducirse en el mundo del diseño paramétrico. Es recomendable tener conocimientos previos de Rhinoceros (nivel básico) ya que hay algunos conceptos que pueden ser útiles para un mejor seguimiento del workshop. …; Added by Diego Cuevas at 9:27am on June 16, 2020

Comment on: Topic 'Geco - UserProblems': try now to integrate Geco in an interdisciplinary architectural engineering studio: hoping we can show you some nice applications of your tool, I'll keep you update and sending now details by e-mail. Here the file (very welcome to be shared). It most probably contais trivial errors by me, thanks for helping and giving some tip! Gr. Michela FILE: Ok, right, I see the outputs update correctly. Origin of problems must be in some different mistake I do: - Incident radiation: I am not sure I understand what is going on: why I get so many 'not a number' ? (The Galapagos report is full of NaNs). Bio-Diversity: 0.887 Genome[0], Fitness=NaN, Genes [89% · 44%] { Record: Too many fitness values supplied } ... Genome[7], Fitness=NaN, Genes [74%] { Record: No fitness value was supplied } .... Genome[9], Fitness=NaN, Genes [37% · 11%] { Record: Genome was mutated to avoid collision Record: Too many fitness values supplied } - Daylight calculations: the geometry accumulates withouth deleting the previous models. As a consequance, results almost do not change after few varations (so, outputs get updated but do not vary). In current daylight definition: the first object being imported is the one where the grid has to fit; its setting makes it cancelling all the other objects during import. All the others, do not delete anything when imported. When running loops (manual or GA) that vary parameters, the entire geometry do not get cancelled - so I guess the loop does not pass back by the cancelling step, but imports only the geometry which has been varied by the parameters using the setting of that import component only? I will then try again by changing the order of the operations, but if you have specfic tips, let me know. THANKS! …; Added by Michela Turrin to [uto] tools Plug-ins at 7:34am on December 18, 2010