st between those two applications. But as soon as every frame is re-calculated I noticed that intersection function is very slow. It is actually so slow, that maximum number of polygons to play with is only 10 or less.
Could you help me to find a faster solution for my script?
calculation of intersection lines;
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import ghpythonlib.components as ghcompimport rhinoscriptsyntax as rsdef ctr(crv): pts = ghcomp.Explode(crv)[1] pts = ghcomp.CullDuplicates(pts,0.001)[0] return ghcomp.Average(pts)pts = []lines = []ctr_c1 = ctr(C1)for crv in C2: if ctr(crv) != ctr_c1: int = ghcomp.CurveXCurve(C1, crv)[0] if int: [pts.append(x) for x in int] lines.append(rs.AddLine(int[0],int[1]))
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The overall description of the script:
a)Processing+ghowl is used for moving objects and physics
b)python script (slowest part) calculates intersection lines
c)intersected parts of polygons are rotated in 90 degrees.
I have attached grasshopper and processing files. (processing is not necessary to test the script)
Thank you in advance,
Pereas.
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simple, there are many symetries in 3 main planes. So I used arcs rotated 45° from the main planes and I generate a pentagon which was mirrored and rotated many times.
At the end there are 24 pentagons and 8 hexagons so 32 faces, 54 points/vertex and 84 edges.
It could generate some others tessalation styles
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derstanding of the graphical algorithm editor, and then dive into more complex parametric models. We’ll also learn tricks to keep our project responsive and enjoyable to use.Course outline
covering similar content as the first part of the primer(http://www.grasshopper3d.com/page/tutorials-1)
novel material
duration: 3 days (24 hours)
Including
An understanding of the Grasshopper interface and the visual programming theory
Base parameters, large numbers of points and vectors, and small geometrical instances
Data flow
Troubleshooting definition problems and solutions
Know the main component types
Be able to join, and manage connections and trees
Expressions for both calculation and boolean creation
Understand Data Matching and casting
Managing long lists of objects within Grasshopper
Have an understanding of the functioning of Grasshopper components
Experience creating definitions
Parametric geometry examples, like attractors and list culling
Re-utilizable modeling examples: colored panelization, surface population, gradient and picture sampling and manipulation, catenary line and weaving
Spline animation examples
Getting ready to prepare own definitions in groups
More information...
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egin working on a design, we first have to systematically examine the resources and restrictions which, on the one hand, make every design project possible and, on the other hand, also define and delimit it. Knowing what we have to work with enables us to explore its boundaries and at the same time to venture beyond those boundaries. This is our studio’s sphere of action; our projects emerge as a critical reflection of the discipline of architecture, in its essence, on fundamental concepts, their general form, and their underlying media and processes. The goal of our work is to master a variety of forms of the architectural repertoire of the 20th century, but especially to develop and expand this repertoire, as has been happening in the past 20 years. The goal of this workshop is to introduce a series of these techniques and expertises and to apply the knowledge transfer on a given site in Timisoara. GUESTS: STUDIO ZAHA HADID VIENNA: http://www1.uni-ak.ac.at/architektur/ https://www.facebook.com/StudioHadidVienna Ass. Dipl.-Ing.MArch. AA Dist. Robert NEUMAYR-BEELITZ - lecturer/critic http://www.unsquare.at/ AProf. Mag.arch. Mag.theol. Johannes TRAUPMANN - critic http://www.pxt.at/ Univ.-Ass. Dipl.-Ing. Jens Erik MEHLAN - critic http://moh-architecture.com/ Univ.Stud.Ass. Daniel BOLOJAN - tutor - Grasshopper http://nonstandardstudio.wordpress.com/ Univ.Stud.Ass. Bogdan ZAHA - tutor - Maya http://bogdanzaha.tumblr.com/ LOCAL: Prof.Dr.Arh.Urb.Conf. Florin MACHEDON - critic (BUC)
more information on https://encodedfields.wordpress.com/…
(tree info, relationships to certain other objects, etc.) after it's been baked, so that our team can hand tool some of the results, delete certain objects, etc. I'm using the doc.objects.find(guid) function right now - which works fine when I feed a string into the VB component and set the input as a GUID, but am having a hard time casting my strings from Excel into the GUID directly in the VB component. Hopefully it's easy to do and I can whack my palm on my face, as often I do. Here's my script...I get the "specified cast is not valid" error at: Dim obj As Guid = xlSheet.Range(strGUIDColumn & I).Value.
If activate = True Then
Dim xlApp, xlSheet As Object
xlApp = System.Runtime.InteropServices.Marshal.GetActiveObject("Excel.Application")Dim strSheet As String = "MEM_6"
Dim strGUIDColumn As String = "C"
Dim strDeleteColumn As String = "F"
Dim intCheck As Int16 = xlApp.Worksheets("META").Range("B4").Value
Dim I As Int16
xlSheet = xlApp.Worksheets(strSheet)
For I = 2 To intCheck + 1
Dim obj As Guid = xlSheet.Range(strGUIDColumn & I).Value <- returns my casting error
If doc.Objects.Find(obj) Is Nothing Then
xlSheet.Range(strDeleteColumn & I).Value = "X"
End If
Next
End If
thanks!…
Added by David Stasiuk at 8:05am on December 15, 2010
see in my bottom post image there is only one isocurve showing in U and V.
In Grasshopper there's no surface rebuild? Well, the same old Grasshopper Patch command will let you specify spans I guess, to make a surface from a planar curve, but it won't work for things with holes since they will just fill in!
You can recreate a surface painfully by untrimming, adding many UV points, rebuilding from those points, then retrimming with the original surface info, but the retrimming simply fails.
If you make a planar surface from a curve in Rhino, you end up with utterly no point editability:
No wonder my CreatePatch tests were a failure. The starting surface could not be distorted except in the extreme case of moving four corner points!
I have no idea how to successfully rebuild a surface akin to the Rhino rebuild command. It's great to be able to prototype in Grasshopper, but with Python I can rebuild easily ( http://4.rhino3d.com/5/rhinocommon/?topic=html/M_Rhino_Geometry_Surface_Rebuild.htm ;), so I guess I should start a collection, like peter, of little script components for prototyping with.…
Added by Nik Willmore at 6:18am on February 26, 2016
Introduction to Grasshopper Videos by David Rutten.
Wondering how to get started with Grasshopper? Look no further. Spend an some time with the creator of Grasshopper, David Rutten, to learn the
p; 3D Urban ModelingOn the topography subject I get the next message: "One or more boundaries may be outside the bounds of the topo dataset" I'm not sure if it's the .IMG file I'm loading since I found so many IMG files nearing my polyline area (Miami Lat:26 Lon:-81 aprox.) or maybe my polygon doesn't match the topo area? I have no idea why it isn't working :(On the Shapefile subject, haven't been able to find a Building Height SHP File, so far have downloaded around 8 SHP files which only contain Polylines, my solution is to meanwhile randomize Z heights, but of course this data is not "technically" correct.P.S.: I've already tried all example links and also the ones posted by you and Benjamin in this video.Been strugling last few days, hope you can help me, thanks in advance!!…
Simpsons episode were Bart goes into a mall and in the time he goes in and out of a shop all others have been turned into Starbucks.
I personally don't like it but you can't say they are crushing all competitors because, as far as i know, all owners of those software packages voluntarily sold their property for a good price. I would actually be more worried that an antitrust lawsuit was filed against Autodesk.
For example, this is what happened with Rockefeller's Standard Oil:
The antitrust case against Standard Oil also seems absurd because its share of the petroleum products market had actually dropped significantly over the years. From a high of 88 percent in 1890, Standard Oil's market share had fallen to 64 percent by 1911, the year in which the US Supreme Court reaffirmed the lower court finding that Standard Oil was guilty of monopolizing the petroleum products industry.[32]
The court argued, in essence, that Standard Oil was a "large" company with many divisions, and if those divisions were in reality separate companies, there would be more competition. The court made no mention at all of the industry's economic performance; of supposed predatory pricing; of whether industry output had been restrained, as monopoly theory holds; or of any other economic factors relevant to determining harm to consumers. The mere fact that Standard Oil had organized some thirty separate divisions under one consolidated management structure (a trust) was sufficient reason to label it a monopoly and force the company to break up into a number of smaller units.
To economists, "predatory pricing" is theoretical nonsense and has no empirical validity, either.
In other words, the organizational structure that was responsible for the company's great efficiencies and decades-long price cutting and product improving was seriously damaged. Standard Oil became much less efficient as a result, to the benefit of its less efficient rivals and to the detriment of consumers.
From: http://mises.org/daily/2317
(Beware, that site is very ideologically charged)…
points within the bounds of the site boundary and use each location as an attractor point controlling a variable at each point in the grid (radius of a circle/height of a cube/colour based on a gradient etc.).This would be based on proximity to the attractor points with the effect of each attractor point essentially scaled by the percentage associated with it. For example a location with 88% visitor rates would have a more dramatic effect than a location with 26% visitor rates.
I've had a bit of a play around but can't seem to get beyond the point of what is shown in basic point attractor tutorials online. I'm definitely a novice.
Here's how I figured it would be done:
1) Create a grid of source points within a boundary curve.
2) Select 18 pre-defined attractor points.
2) Measure the distance between the source points and the attractor points.
3) Invert this data so that variables increase with proximity rather than decrease.
4) Give each of the attractor points a strength value from 1-100% based on the visitor rates.
5) Use the scaled data to control a variable at each of the source points.
6) Create some way to control the drop-off rate of the effect from each point.
It is at step 3 that I get completely lost.
I hope my description is clear. Any help would be greatly appreciated,
Adam
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