able and it needs to know how to convert itself from/to other types of data.
Let's say that you have a simple data type that combines a point and an integer:
public struct PointIndexData
{
public Point3d Point;
public int Index;
}
It doesn't really matter whether it's a class or a struct. Once you have your data type you can 'wrap' it up in goo in order to make it Grasshopper compliant:
public class PointIndexGHData : GH_Goo<PointIndexData>
{
//...
}
At this point you'll need to implement the 5 abstract methods that are not implemented by GH_Goo<T>. They might look something like this:
public class PointIndexGHData : GH_Goo<PointIndexData>{ public override IGH_Goo Duplicate() { PointIndexGHData dup = new PointIndexGHData(); dup.Value = Value; return dup; }
public override bool IsValid { get { return Value.Index >= 0; } }
public override string ToString() { return string.Format("{0} [{1}]", Value.Point, Value.Index); }
public override string TypeDescription { get { return "Points and Integers, living in perfect harmony"; } }
public override string TypeName { get { return "IndexPoint"; } }}
You'll probably also want to override the CastFrom and CastTo methods so that your data can easily be used by any component which takes in simple points or integers, and -in this case- you want your data to also implement the Grasshopper.Kernel.IGH_PreviewData interface as this data can -and should- be displayed in the Rhino viewports.
--
David Rutten
david@mcneel.com
Poprad, Slovakia…
com/forum/topics/kangaroo-matters-relaxing...
For a simplified version of the lost data issue use the modified def attached.
Note:
1. In this case GH stored some data (3 out of 5 nurbs). Notice that the internalized info is dimmed (but "null" is the final output).
2. Image sampler suffers as well - here using a recent photo of me (+ my cat) as a test ("save in file = on" it doesn't work in pretty much all the cases).
If the sampler could work you should see this:
3. Imagine storing captured images in various directories and creating a GH def using some images from, say, directory "capture screens 17".
In some occasions Image sampler stores correctly the image file name ... but mess things as regards the donor directory:
Here's a typical example with image files stored and directory name "replaced":
…
ll pop-up a message saying what it's happening inside that "A" slot, as i'm doing in the screenshot above.
"Similar" component is automatically converting his inputs into numbers (if it wasn't able to do it, it would be displayed an error).
If you compare the lists, you can see that the conversion from point to number is not very helpful at this moment (this specific conversion is the distance from the point to the world 0, or the length of the vector equivalent to the point, same thing).
2- Grasshopper lists-components managing.
A generic component in grasshopper behave different to what you are expecting.
What is happening here is somehow like this:
The component "Similar" (but it work like this in a lot of other components, if not all) take the first element in list "A" and combine it with the first element in list "B",
the second element in list "A" and combine it with the second element in list "B",
the third element in list "A" and combine it with the third element in list "B",
4th in A with 4th in B,
then, as the list B is shorter then list A (4vs33 elements), grasshopper repeat the last element in list B until the end of list A.
What you want to do after with that true/false list?
And how can you compare point with a 5% tolerance? Depending of their coordinates?
Or you want to remove every point in list A that is similar to at least one point in list B... ?
These are simple operations, and there are so many way to achieve any result.
If you can explain to what you are aiming for, it will be the best to help you.
:D
…
go and sulk in the corner, my C# is non existent, although i am making progress on python unfortunately slower than my grasshopper.
Attached is a typical relatively simple planar grillage model for a bridge form that is common in Australia/NZ/Asia. The analysis package has a good graphical interface, however i am looking at replicating the process ideally with GH. I am getting there.
There are a few constraints in the use of a super T, the precast mould is governed by two critical dimensions:
1. from the beams soffit to the underside of the precast flange, normally Depth -75 or 100mm. Depths that are common are 1200/1500/1800.
2.The real sweet spot dimension is the 1027mm dimension to the outside of the webs, this is a constraint
The actual shapes of the prestressed beams are governened by AS5100:5 Appendix H (from memory)
In my definition I included the super T cross section which is parametric.
The other definition is where I have got to with the grillage.
I am a little one dimensional: point-line-surface-volume. I think I am getting to grips with manageing data i lists.
My ulimate aim is to:
generate basic geometry in gh, the type of analysis will be a space frame or FE, these analysis types require different geometries imported to a structural analysis package
ideally utilise IFC, for materials, 2D, 3D drawings and project documentation
At the moment I am looking to generate all of my gemetry in GH, that seems to generate a lot of doubled up geometry. Deconstruct Brep may become my favourite.
A little excesive is the inclined members spilt into the same no. of points at the grillage length.
again thanks for you time, oh! took a a few minutes to work out how to plug your def's in.
kenyon
…
Added by Kenyon Graham at 7:57pm on December 3, 2015
t'd be great.
I am trying in Rhino 5 and would like to understand where to get the documentation and get the feel for the differences.
Also, do you write such scripts directly in the component? Or elsewhere? How can one debug them?
Thank you for your help.
Option ExplicitCall Main()Sub Main() Dim arrObjects, arrMP, i Dim offsetSize offsetSize = 1 arrObjects = Rhino.GetObjects("Select curves to offset") If IsArray(arrObjects) Then For i = 0 To UBound(arrObjects) arrMP = Rhino.CurveAreaCentroid(arrObjects(i)) If IsArray(arrMP) Then Dim arrNewobject, strGroup, grpName arrNewobject = Rhino.OffsetCurve(arrObjects(i), arrMP(0), offsetSize, ,2) Rhino.AddLayer("offset") Rhino.ObjectLayer arrObjects(i),"offset" Rhino.ObjectLayer arrNewobject,"offset" strGroup = Rhino.AddGroup Rhino.AddObjectsToGroup arrObjects(i), strGroup Rhino.AddObjectsToGroup arrNewobject, strGroup End If Next End If End Sub
…
occur more than once in the same list, and different elements with identical values can occur more than once. Also, a list may contain lack of elements, referred to as "nulls".
Sets. Strictly speaking a Set is a mathematical construct which adheres to a strict collection of rules and limitations. Basically, a Set is the same as a List, with the exception that it cannot contain the same element more than once, or indeed two or more different elements with the same values. You see, in mathematics there is no difference between a value and an instance of that value, they are the same thing. In programming however it is possible to store the number 7 in more than one spot in the RAM. Grasshopper does not enforce this rule very strongly though, you can use a lot of Set components on lists that have multiple occurrences of the same value. The big difference between Lists and Sets in Grasshopper is that Sets are only defined for simple data types that have trivial equality comparisons. Basically: booleans, integers, numbers, complex numbers, strings, points, vectors, colours and intervals. Lists can contain all kinds of data.
Strings. Strings are text. There's nothing more to it. I don't know why early programmers chose to call them strings, but I suppose it's a better description of the memory representation of them. Strings are essentially sequences of individual characters.
Trees. Trees are the way all data is stored in Grasshopper. Even when you only have a single item, it will still be stored in a tree. A tree is a sorted collection of lists, where each list is identified by a path. A specific path can only occur once in a tree, when you merge two trees together, lists with identical paths are appended to each other. Trees are an attempt to losslessly represent not just the data itself, but also the history of that data. Imagine you have 4 curves {A,B,C,D} and you divide each into 3 points {X,Y,Z}. Then, for each of those points you create a new line segment {X',Y',Z'} and then divide each of those line segments again into 5 points each {K,L,M,N,O}. The way data is stored in trees, it should be possible to figure out whether a point M belongs to X' or to Z', and whether that X' or Z' came from A, B, C or D. This is why paths are often quite long after a while, because they encode a lot of history.
Paths. A Path is nothing more than a list of integers. It's denoted using curly brackets and semi-colons: {A;B;...;Z}. A Path should never be empty {} or have negative integers {0;-1}, but it is certainly possible to create a path like this and it probably won't even crash Grasshopper. Paths are 'grown' by components that (potentially) create more than one output value for a single input value. For example Divide Curve. It creates N points for every single input curve. In cases like this a new integer is appended to the end of the path.
In the next release the Path logic in Grasshopper is somewhat different. I fixed a number of obscure bugs (hopefully without introducing new fresh bugs) and special cased certain operations to somewhat reduce the speed at which paths grow. This may well break files that rely on a specific tree layout, but I hope the temporary sacrifice will be worth the long-term benefits.
--
David Rutten
david@mcneel.com
Poprad, Slovakia…
si à faire le tri avec Grasshopper et l'outil Points in Brep, comme je pensais. Je suis passé d'environ 400 000 points à uniquement 20 000 points autour de mes 3 rails. C'est très efficace (mais un peu dangereux avec tous ces points).
J'ai interdit au composant CircleFit de faire un cercle, s'il n'y a pas au moins 5 points présents sur la section. Car lorsqu'il y a seulement 3 ou 4 points, il suffit qu'il y en ait un pour que le cercle soit faux, alors qu'au delà, le cercle a plus de chance d'être "bon".
J'ai également créé des "Pipe" (créés à partir de portions de l'axe) au lieu des "Box » de sélection des points pour éviter de sélection trop de points que ne serait pas des points du rail.
J'ai ensuite créé des « panel » pour la moyenne des distances en X et en Y et la moyenne des distances centre à centre.
Tout cela fonctionne bien avec un axe et un tuyau. Mais maintenant j'essaie d'appliquer ça à plusieurs rails en même temps. Je crois avoir compris qu'il faut créer des « path » dans l'imput manager, et faire correspondre le « path » de l'axe et celui du Tuyau.
Dans mon exemple j’ai mis 3 courbes et 21 sections. Au moment où j'utilise les boîtes pour créer les portions des axes, il crée 63 « sous-path » de 1 courbe alors qu'il faudrait qu'il crée 3 "paths" de 21 courbes, enfin si j'ai bien compris.
Car une fois qu’il a créé les points à l’intérieur des « Pipe », il doit les projeter sur les plans correspondant. Et c’est là que le problème se voit. Il ne fait pas correspondre les points à projeter et les plans.
Je vous envoie la version à une courbe et un tuyau (c’est la v5 avec un fichier rhino ou la courbe d'axe est "bakée" pour pouvoir faire un zoom sur la zone plus rapidement) et je vous envoie également, celle avec 3 courbes et 3 tuyaux. Sachant qu’il faudra également attribuer un rayon pour un des tuyaux et un autre rayon pour les deux autres.
Tout ça est bien compliqué, j’espère que je ne vous embête pas trop.
Merci d’avance.…
http://www.pilkington.com/) dominates the planar market. Charges "around" 1K Euros per m2 for a "plain" system. Personally in bespoke projects I design my own stuff but due to economies of scale ... they cost a bit more (but they look far more sexier, he he) . On the other hand only in a bespoke project I could dare to suggest such a solution (for a large scale building we are talking lots and lots of dollars).
3. Several scales below (aesthetics) you can find static alu systems (either structural or semi-structural):
Or hinged systems (either structural or semi-structural) capable to adapt in contemporary double curvature facades/roofs/envelopes/cats/dogs etc etc ... pioneered worldwide many years ago by my best friend Stefanos Tampakakis (everybody in UAE knows that genius man: http://www.alustet.gr/company.html):
4. With the exception of some paranoid things that Guru Stefanos does for Zaha these days we are talking about planar "facets" (obviously a triangle is such a planar facet). The current trend is: the more edges the better (humans excel in vanity matters). But achieving planarity in, say, quads (like yours) it adds another "restriction" on what you are doing. Until recently Evolute Tools Pro was the only answer. But right now ... well let's say that in short time you'll be greatly surprised by some WOW things in this Noble Forum, he he.
5. MERO (and obviously custom systems) can adapt (at almost no extra charge) in anything imaginable. But in a bespoke building ... well.. you know ultra rich people: they don't want MERO anymore since "everybody" does MERO solutions. Vanity, what else?
6. Smart Glass would become a must in the years to come: Eco-Architecture MUST dominate everything you do. On the other hand spending millions to do some extra WOW stuff (Vanity) ... it doesn't look to me very Eco-Friendly/Whatever ... but let's pretend so, he he.
7. I'm Architect but a bit different from the norm: for instance I smoke cigars (highly politically incorrect stuff) I always talk openly (ditto) and I ride lethal bikes (ditto).
may the Force (as always the Dark Option) be with you: go out there and kill them all.
best, Peter
…
Ladybug + Honeybee:
(Follow steps 0-4 for basic functionality and 0-9 for full functionality)
0. If you have an old version of LB+HB, download the file here (https://app.box.com/s/ds96em9l6stxpcw8kgtf)
and open it in Grasshopper to remove your old Ladybug and Honeybee version.
1. Make sure that you have a working copy of both Rhino and Grasshopper installed.
2. Open Rhino and type "Grasshopper" into the command line (without quotations). Wait for grasshopper to load.
3. Install GHPython 0.6.0.3 by downloading the file at this link (http://www.food4rhino.com/project/ghpython?ufh) and
drag the .gha file onto the Grasshopper canvas.
4. Select and drag all of the userObject files (downloaded with this instructions file) onto your Grasshopper canvas.
You should see Ladybug and Honeybee appear as tabs on the grasshopper tool bar.
(If you are reading this instruction on github you can download them from http://www.food4rhino.com/project/ladybug-honeybee)
5. Restart Rhino and Grasshopper. You now have a fully-functioning Ladybug. For Honeybee, continue to the following:
6. Install Radiance to C:\Radiance by downloading it from this link (https://github.com/NREL/Radiance/releases/download/4.2.2/radiance-4.2.2-win32.exe) and running the exe.
7. Install Daysim 4.0 for Windows to C:\DAYSIM by downloading it at this link (http://daysim.ning.com/page/download) and running the exe.
8. Install EnergyPlus 8.1 to C:\EnergyPlusV8-1-0 by going to the DOE website (http://apps1.eere.energy.gov/buildings/energyplus/energyplus_download.cfm), making an account, going to "download older
versions of EnergyPlus, selecting 8.1 and running the exe.
9. Copy falsecolor2.exe (http://pyrat.googlecode.com/files/falsecolor2.exe) and evalglare.exe (http://www.ise.fraunhofer.de/en/downloads-englisch/software/evalglare_windows.zip/at_download/file) to C:\Radiance\bin
10. You now have a fully-working version of Ladybug + Honeybee. Get started visualizing weather data with these video tutorials (https://www.youtube.com/playlist?list=PLruLh1AdY-Sj_XGz3kzHUoWmpWDXNep1O).
After I've done all the above I followed this video
https://vimeo.com/96155674
And everything works well.
…
e actual method.
Below, I descibe how they work:
1) drag "scheduleDay" onto the canvas
2) drag some Gene Pool lists onto the canvas and connect a number slider - from 0 to 3.
3) connect the Gene Pool list to _genePool input. The component change some important features of the Gene Pool list automatically. Now you have LB_GenePool!!
4) choose the template that it's suitable for you.
5) disconnect LB_GenePool and if templates are not good, you can change them manually
6) drag "Ladybug annual schedule" onto the canvas
7) Connect LB_GenePools to inputs for the days of the week, Epw file and if you want to "_holiday" (in this way you consider holidays). Now you have your simple schedule.
8) a small workflow to visualize it into Rhino..
9) Connect "Ladybug annual schedule" to "Honeybee_Create CSV Schedule" to make your csv Schedule
You could make a schedule more complex than the one in the example above.
You can do that with _analysisPeriod input.
Bests
Antonello…