ey eventually recover and you can continue to working normally. This however is not very practical...
(Additional information: We have a virtualized Windows SPS environment, might this be the problem? Locally - on my hard drive - it works fine.)
Futhermore we've discovered the following bug/feature:
We export a cluster and reference it back into our .gh file, then copy the .ghcluster file to a different location and rename the copy (without opening or changing it), then also reference the copied version back into the .gh file. Now Grasshopper shows two clusters with two different file paths, but claims that they both are the same ("this cluster occurs twice in this document"). If I double click one of them, make a change and save, both clusters get changed, even though they are separate .ghcluster files.
This would follow the logic that David laid out in this entry (http://www.grasshopper3d.com/page/clusters09), that GH identifies a cluster not by its file name or location but by its internal ID.
An addition we would very much appreciate for the next GH update, would be the option to right click a referenced cluster and then not only be able to "update" it but to also to "relink" it to a new or different source.
Right now you have to rename or delete the .ghcluster file in order to relink a cluster via the update option. You can also overwrite the old cluster und update. However, sometimes we want to keep the old version or disentangle one of a clusters many instances and relink just one, with out loosing its various inputs and outputs by referencing the new version and reconnecting it.
Thanks, BB.…
whole design intent, but this is what Inventor is good at. The way it packages bits of 'scripted' components into 'little models' that can be stored and re-assembled is central to MCAD working.
The Inventor model shown is almost 5 years old. We don't model like that any more, however it does offer a good idea of general MCAD modeling approaches.
iParts is useful in certain situations, it could've been useful in the above model, its usefulness is often in function of the quantity of variants/configurations.
So much is scripted in GH, maybe it should also be possible to script/define/constrain/assist the placement/gluing of the results?
...
Starting point: I think we are talking across purposes. AFAIK, the solving sequence of GH's scripted components is fixed. It won't do circular dependencies... without a fight. The inter-component dependencies not 'managed' like constraints solvers do for MCAD apps.
Components and assemblies are individual files in MCAD.
Placement of these within assemblies in MCAD is a product of matrix transforms and persistent constraints. There is no bi-directional link, the link is unidirectional (downflow only), because of the use of proxies.
Consequently, scripting the placement of components is irrelevant in GH, unless you decide that each component needs to be contained in its own separate file.
This also brings up the point that generating components and assemblies in MCAD is not as straightforward. In iParts and iAssemblies, each configuration needs to be generated as a "child" (the individual file needs to be created for each child) before those children can be used elsewhere.
You notice the dilemma, if you generate 100 parts, and then you realize you only need 20, you've created 80 extra parts which you have no need for, thus generating wasteful data that may cause file management issues later on.
GH remains in a transient world, and when you decide to bake geometry (if you need to at all), you can do that in one Rhino file, and save it as the state of the design at that given moment. Very convenient for design, though unacceptable for most non-digital manufacturing methods, which greatly limits Rhino's use for manufacturing unless you combine it with an MCAD app.
One of the reasons why the distributed file approach makes perfect sense in MCAD, is that in industry you deal with a finite set of objects. Generative tools are usually not a requirement. Most mechanical engineers, product engineers and machinists would never have any use for that.
The other thing that MCAD apps like Inventor have, is the 'structured' interface that offers up all that setting out information like the coordinate systems, work planes, parameters etc in a concise fashion in the 'history tree'. This will translate into user speed. GH's canvas is a bit more freeform. I suppose the info is all there and linked, so a bit of re-jigging is easy. Also, see how T-Flex can even embed sliders and other parameter input boxes into the model itself. Pretty handy/fast to understand, which also means more speed.
True. As long as you keep the browser pane/specification tree organized and easy to query.
:)
Would love to understand what you did by sketching.
I'll start by showing what was done years ago in the Inventor model, and then share with you what I did in GH, but in another post.
Let's use one of the beams as an example:
We can isolate this component for clarity.
Notice that I've highlighted the sectional sketch with dimensions, and the point of reference, which is in relation to the CL of the column which the beam bears on. The orientation and location of the beam is already set by underlying geometry.
Here's a perspective view of the same:
The extent of the beam was also driven by reference geometry, 2 planes offset from the beam's XY plane, driven by parameters from another underlying file which serves as a parameter container:
Reference axes and points are present for all other components, here are some of them:
It starts getting cluttered if you see the reference planes as well:
Is I mentioned earlier, over time we've found better ways to define and associate geometry, parameters, manage design change, improving the efficiency of parametric models. But this model is a fair representation of a basic modeling approach, and since an Inventor-GH comparison is like comparing apples and oranges anyways, this model can be used to understand the differences and similarities, for those interested.
I haven't even gotten to your latest post yet, I will eventually.…
Added by Santiago Diaz at 10:36am on February 26, 2011
he picture (4).
Previously, I had a problem with generating intersections between the two directions of the beams, but a colleague helped me by extending beams, so there was no problem with lines of intersection. But this solution has generated curl (5) at the highest vertex geometry, which I ignored in order to repair it before printing, perhaps this mean my problem with my beam spread properly. Only when the beams is 19, does not jump no problem, but I still can not distribute them properly.
(1)
(2)
(3)
(4)
(5)
I tried to show as simply as possible by removing or signing my code in GHX file.
Thank you in advance for your help
…
ard to find example...
I do not know how to load windows form and send data to object in form.vb...using grasshopper sdk.
it is the same,, when I try to use dll(class) with VB component in grasshopper.
may be I have to make two class (class1, form1) but,
when I send data to class1, form1 can not receive class1 data because form 1 made new class1 and both class1, class1(from form1) is different session?
for novice programer,, for me it is very hard.
load class1,
class1 load form1
send data from grasshopper to form1. x
and button click
couldn't calculated,... result was always "0"
and tried many other methods,, but it failed...
may be some known technic but it is hard to find books...
Please...help me.
if possible would you tell me how to load form1 using grasshopper sdk and ""send data "" to form1
or form1 could use data from grasshopper?
Thank you....
for ex)
'(in class.vb)
Public Class Class1 Private Shared fl As Form1 Public Sub fload() If fl Is Nothing Then fl = New Form1 fl.Show() End If End SubEnd Class
'(in form1.vb)
Public Class Form1 Public x, y As Double Private Sub Button1_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Button1.Click
ab(x, y) MsgBox("hi" & y) End Sub Sub ab(ByRef a As Double, ByRef b As Double) b = a * 2 End SubEnd Class
'(in Grasshopper VB.component)
Dim cl As ClassLibrary1.Class1 If cl Is Nothing And f = True Then cl = New Class1 cl.fload() End If Dim fr As ClassLibrary1.Form1 If fr Is Nothing Then fr = New Form1 End If fr.x = x a = fr.y…
f my list.I don't understand why, but I guess I must be too young user ^^In the original list, i have a path {0;0;0;4} with two index and after the random node, {0;0;0;4} has 88 index.Items are not correct?I would have a comparable structure has the right list on my jpg (photomontage...)How I can do that?Thank you in advance
…
le with you.
I am trying to achieve the minimal path algorithm of Steiners tree in Python using the minimal path algorithm.The syntax would be as followsFirst I need to create a cube of any dimension.
Then I need to specify one origin say point A and destination point say B.
Now for this point A,B I need to create a machine based network which will automatically enroute A to B.
Where the angle will be constant i.e 120, length can be a variable, triangular node(steiners tree)using these constraints it will create a network.
Now, I should iterate the program in such a way that I should specify the further points say like A1 and B1 so on.The program will contain a limit constraint where it will come out of iteration loop and start a new loop,forming the network.
By this I will get a dense network of 120 deg branches.
The branching gets denser the moment I add source and destination points.
There can be 100 iterations to reach from A to B but the algorithm chooses the one following the minimal path.
I would be highly thankful to you if you would please share the python syntax and grasshopper definitionCapture.JPG for the same
Thank you for your time in advance
I would be highly grateful if you help me through
warm regards
Arya
12.gifShortest%20path%20algorithm.gh
min-paths.jpgcc.henn.studyimagesminimalpaths.jpg …
er, i hae drawn a quck sketch. Different curves in blue and orange colour. i have marked on my sketch which is a a non-planar surface.
At the moment, i have modeled this with NURBS curve component (component without Knots & Weights). I have set 5 to its 'P' intput (I'm going to reduce it to 3). Each point having 3 parameters X, Y & X axis. I have set my slider from -100mm to 100mm range. It is a closed curve.
If i just loft it, i get random results which i donot want. I can get a planar surface if i set Z parameter to zero. But how do i get a non planar and preferably a burbs surface?
the curves are very important to this projects. as Whole form is dependent on these curves.
Your tips will be highly appreciated. If you have different way of modelling it, I'm open to suggestion too.
cheers,
aB…
and perpframes
3) Ellipse on perframes
4) Series + Move + Series + Scale + Series + rotate (to create generations)
5) Divide curve (ellipse) + Dispatch only seleced points + join those points on ellipse using Intercurve + Divide the resulting intercurve
6) List items (I used list items 4 times, you could do as many). For 'i' parameter in list item i used slider to create generations. depending upon your definition, at this stage you might have to flatten your list output
7) joint the points you get from list output to form another intercurve + repeat that for all items.
8) Loft the curve
9) to form fenestrations, i again used rhino closed curves.
8) Project curve onto surface + copy trim + surface to mesh + mesh thickening from WB.
Hope this helps
Cheers
aB
…
his project. Attached is my latest script. It seems to work for all points & directions of gravity except when the points are at equal height (in the reference plane the script creates, not in the world space). In other words, when the vector from A to B is perpendicular to the gravity vector, it doesn't work. It's totally due to the formulas used to solve for distance (see script), but I haven't found a way to fix it to make it work. Kudos to anyone that can help me figure it out!
Other notes: Required input: Point A, Point B, Gravity vector, and desired Height and/or desired chain/arch Length. Cool trick: when inputting both Height and Length, it recalculates the end point (point B) with those desired parameters, and the end point lies along the AB vector. Also, the "x" output shows either the found height, length, or distance (when both height & length are input), and "newPl" just shows the reference plane used to make calculations easier.
Cheers…
Added by Will McElwain at 11:52pm on January 18, 2014