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
d the workshop PDF from this link: http://goo.gl/bcvRNH Download event poster from this link: http://goo.gl/Q0KWCM Brief: Cairo is filled with barriers controlling people movements, suppressing them as well as detaining green and public spaces to the extent that most people have been taking these spaces for granted. Public spaces have been for a while the periphery of our daily life. We will explore in this workshop how we can manipulate and alter people’s perception and direct their attention to how these spaces are integral for city life. This exploration will be backed up by intensive technical tutorials introducing computational design and fabrication techniques and tools mainly Rhino, Grasshopper, Geco and Ecotect. Not only will this be the typical technical workshop, but rather you will also have the chance to be guided step by step on how these tools are used through out different design stages in a real world scenario. Design prototypes will be produced through 3D printing, the main workshop output will be a fabricated one to one functional model for one of the designs using our new in-house CNC machine. Tutors (check the PDF for bio): Olga Kovrikova, MArch DIA Alexandr Kalachev, MArch DIA Karim Soliman, MArch DIA Islam Ibrahim, MArch DIA Sherif Tarabishy, B.Sc. AAST Application: Application deadline 1 September 2013 ** For students (undergrad / Master), teachers and PhD proof of status is required (university ID with a date or a certificate of enrollment) to apply for the students package. Packages (choose one of the following in the application form): 1. Standard registration Course fee is 4250 EGP For Students 3500 EGP 2. Early bird registration discounted fee For Professionals 3750 EGP For Students 3000 EGP ** Early bird offer ends on 14 August 2013 3. Group registrations discounted fee (5 or more) For Students 20% off - You will have to fill out an application form here: http://goo.gl/0QxAga - You will need to submit your CV and Short Portfolio (max. 10 MB) to info@morph-d.com, email subject: “Morphing Norms Application” (we will decide if you are eligible for an early bird discount or not based on the date of your email submission) - We will confirm receiving emails from all applicants. Successful applicants will be contacted 5 days after each deadline (early bird/final) and will have to confirm participation within 3 days, if they fail to do so, places will be given to others on the waiting list. - A maximum of 30 applicants will be selected.
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teaching Rhino, Grasshopper, Environmental Analysis, Keyshot and 3D printing. Taught by Radul Shishkov - DesignMorphine Georgi Kunchev - DesignMorphine Apply Now and view details at: www.designmorphine.com/workshop/future/vertical-variables-v2/ Follow us on Facebook: https://www.facebook.com/designmorphine and Instagram: https://www.instagram.com/designmorphine/…
ibute it across a curved vertical surface and to have the control to rotate the panels individually.any feed back will be much appreciated :)new hex componant build 01 .ghx
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on or show me what I'm doing wrong?
Im getting the following errors:
1. Error (CS0136): A local variable named 'stk' cannot be declared in this scope because it would give a different meaning to 'stk', which is already used in a 'parent or current' scope to denote something else (line 75)
2. Error (CS0029): Cannot implicitly convert type 'Rhino.Geometry.Brep[]' to 'Rhino.Geometry.Brep' (line 75)
Code below:
private void RunScript(List<Brep> x, Brep y, ref object A) { List<Rhino.Geometry.Brep> myBreplist = x;
Brep stk = y;
int i = 0;
while(i < myBreplist.Count){ Brep brepA = myBreplist[i]; Brep stk = Brep.CreateBooleanDifference(brepA, stk, .01); i++; }
A = stk;…
jpg and would like the image sampler to produce circles on the center points of anywhere there is white in the jpeg. It's performing almost perfectly except that the result is producing the smallest of circles on the portions of the jpg that are black. Is there a way that once the sampler would not allow any circles where the jpg reaches full black.
So instead of producing a circle on every cell center in the grid, I only want the circles where there is a trace or more of white. So this would cut down significantly the amount of 'smallest size' circles.
02. For some reason, the output is producing circles slightly pushed to the right. The values and content of the jpg are perfectly centered from the edges, yet it just off center. Looking for a solution to this too.
Thanks for the time and consideration everyone.…
umbrella of Urban Heat Island (UHI) and I am going to try to separate them out in order to give you a sense of the current capabilities in LB+HB.
1) UHI as defined as a recorded elevated air temperature in an urban area:
If you have access to epw files for both an urban area and a rural area, you can use Ladybug to visualize and deeply explore the differences between the two weather files. Ladybug is primarily a tool for weather file visualization and analysis and it can be very helpful for understanding the consequences of UHI on strategies for buildings or on comfort. This said, if you do not have both rural and urban recorded weather data or you want to generate your own weather files based on criteria about urban areas (as it sounds like you want to do), this definition might not be so helpful.
2) UHI defined by air elevated air temperature but viewed as a computer model-able phenomenon resulting primarily from urban canyon geometry, building materials, and (to a lesser degree) anthropogenic heat:
This definition seems to fit more with they type of thing that you are looking for but it is unfortunately very difficult and computationally intensive such that we do not currently have anything within Ladybug to do this right now. I can say that the state-of-the art for this type of modeling is an application called Town Energy Budget (TEB) and this is what all of the advanced UHI researches that I know use (http://www.cnrm.meteo.fr/surfex/spip.php?article7). Unfortunately for those trying to use it in professional practice, it can take a while to get comfortable with it and it currently runs exclusively on Linux (this does mean that it is open source, though, and that you can really get deep into the assumptions of the model). A couple years ago, a peer of mine translated almost all of TEB into Matlab language making it possible to run it on Windows if you have Matlab. He wrapped everything together into a tool called the Urban Weather Generator (UWG), which can take an epw file of a rural area and warp it to an urban area based on inputs that you give of building height, materials, vegetation, anthropogenic heat, etc. I would recommend looking into this for your project, although, bear in mind that is it not open source like the original TEB tool and that you may need to get a (very expensive) copy of MATLAB (http://urbanmicroclimate.scripts.mit.edu/uwg.php).
3) UHI as defined by a thermal satellite image of an urban area depicting an elevated average radiant environment that reaches a maximum a the city center and changes by land use:
This is the definition of UHI that I am most familiar with and was the basis of much of my past research. I feel that it is also a definition of UHI that is a bit more in line with where a lot of contemporary UHI research is headed, which is away from the notion of UHI as a macro-scale meteorological phenomena that is averaged as an air temperature over a huge area towards one that accepts that different land uses have different microclimates and (importantly) different radiant environments. While the air temperature difference between urban and rural areas usually does not change more than 1-4 C, the radiant environment can be very different (on the order of 10-15 C differences). The best way to understand UHI in this context is with Thermal satellite images, for which there is ha huge database of publicly available data on NASA's glovis website (http://glovis.usgs.gov/) or their ECHO website (http://reverb.echo.nasa.gov/reverb/#utf8=%E2%9C%93&spatial_map=satellite&spatial_type=rectangle). I tend to use thermal data from LANDSAT 5-8 and ASTER satellites in my research. Unfortunately, there is a lot f bad data with a lot of cloud cover mixed in with the really good stuff and it can take some time to find good images. Also, there aren't too many programs that read the GeoTiff file format that you download the data as. I know that ArcGIS will read it, a program called ENVI will read it (I think that the open source QGIS can also red it). I have plans to write a set of components to bring this type of data into Rhino and GH (I may get to it a few months down the line).
4) UHI as a computer model-able notion of "Urban Microclimate" with consideration of local differences and the local radiant environment:
This is where a lot of my research has lead and, thankfully, is an area that Honeybee can help you out a lot with. EnergyPlus simulations can output information on outside building surface temperatures and these can be very helpful in helping get a sense of the radiant environment around individual buildings. Right now, I am focusing just on using this data to fully model the indoor environments of buildings as you see in this video:
https://www.youtube.com/watch?v=fNylb42FPIc&list=UUc6HWbF4UtdKdjbZ2tvwiCQ
I have plans to move this methodology to the outdoors once I complete this initial application to the indoors. For now, you can use the "Surface result reader" and the "color surfaces based on EP result" components to get a sense of variation in the outside temperature of your buildings.
I hope that this helped,
-Chris
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and how I can layer information into my components.
Essentially this whole definition has been working towards replicating a thermography graph (i.e. heat sensor) in a grasshopper definition. The arbitrary paths at the beginning of the definition simulate a walking pattern, the proximity (and the subsequent half of the wall subsurfaces) indicate which wall panels should react and finally, the radius of the sphere (which I've been working on since my response this morning, is indicative of the temperature of an entity at the point along the path and is represented on the wall surfaces by color.
The reason that I first started this thread was because I am trying to make the definition work for multiple heat sources (e.g. multiple people walking by this wall), which in turn creates a hierarchy among the subsurfaces of the wall. Essentially there are three groups:
Area 01: Subsurfaces that are not in proximity to any of the heat sources (the opposite of what you helped me with earlier)
Area 02: Subsurfaces that are in proximity to multiple heat sources (what you helped me on earlier)
Area 03: Subsurfaces that only are in proximity to a single heat source.
Area 01 will always be the darkest color on the gradient because it essentially is not reacting to the heat sources. Area 03 will have specific reactions to only one heat source. Area 02 will be an amplified area because multiple heat sources are being read. For me, the hard part to get my head around is that all subsurfaces of Area 02 are technically part of Area 03 and so their color should be a product of whatever initial heat sources are interacting. If I were in a program such as photoshop/illustrator, I could change the opacity of each zone of interaction in order to see the overlap, but in this case I need to build this idea into the components.
There is unquestionable redundancy in the grasshopper file that I'm attaching, but it illustrates how I'm trying to have the wall surface measure and react to two independent entities (using the position and radius of the spheres). I have started re-working the definition according to a lot of the logic you used in your file, but I still am uncertain of how to have the overlap area also reflect an amplification because of multiple points. I've tried to make notes on the definition and call out areas where I am still questioning my logic.
Again, thanks for all the help Danny.
--Jordan…
Added by Jordan Barr at 12:48pm on January 28, 2011