ted a picture of in your post. The reason is that sound has larger wavelengths than light.
With a light rendering model, energy can be said to reflect specularly, relative to their geometry, because the wavelength of light is inifinitesimally small relative to any object you might have modelled. With sound, energy may travel and reflect diffusely, or move around objects, depending on the scale of those objects. Think of the fundamental equation of frequency to wavelength - speed of sound = frequency X wavelength. Using that, you can see that a wave in the 125 hz octave is about as tall as a human being (or maybe a little taller) and would easily move around your body, not being reflected at all. A wave in the 1000 Hz. octave band is as big as your forearm, and might reflect specularly from your torso. A wave in the 4000 hz. octave band is about as long as your index finger, and might reflect off of your torso, or even your head.
Similarly, if you were to model the seats explicitly, it might be relatively accurate at very high frequencies (say 4000 hz. and above) but that is a very small part of the answer. Consensus in the field is that the most accurate way to model the seats is with a flat plane, raised to about shoulder height, and then with scattering coefficients applied to represent the varying effects of geometry on sound. I tend to use low coefficents below 250 hz. (say around 30%) and high coefficents above 250 Hz.(90%).
Absorption depends on the seat which was chosen. This is often a good area to use for a model calibration based on measured reverberation time.
Arthur…
ces are distorted (second). What is going on?
Surfaces in the second are a rhino cage edit of the surfaces in the first image. They were originally all closed polysrfs exploded just to input into grasshopper.
In the definition attached, each surface is compared to an original (its the small box in the far left of the top image) The point there is the ability to select for more than just the 6 faces of a cube, but find the closest match to more complicated inputs. In the second image, distorted surfaces are being compared to a distorted original.
If I have my math right, two parallel unitized normal vectors should have a dot product of 1, and the further away from 1 their dot product the further away from parallel, no? Why does it fail when I leave the comfy land of 90 degrees?…
Added by Peter Stone at 2:39pm on January 28, 2015
e to constrains, I HAVE to do it like this (I can't 3D print everything or opposite).
First
I have no idea how to make the panels, without so many duplicate Edges, Faces etc.
Second
I can't figure out how to align the triangle panels to fit in the construction, so it can be assembled ideally without glue. This problem is both conceptual (I can't figure out how to do it fiscally) and grasshoper-wise - I don't know how to organize data list and produce a global movement, so that the triangle parts do not intersect with each other, BUT intersect the 3d printed construction part (where they fit fix in or just fit and can be glued).
Triangles will be milled out from 3mm Plexiglas, BUT I will not have an option to mill at an angle, so only 90° edges.
3D printed parts will be executed by a high level production powder printer, so it should hold good.
Any ideas?
best,
cuki
…
File) 2. I have designed a curved Trichordal-Truss from one curve in Rhino.
The Truss is lying in the XY direction and the footer is placed on the zero point.
3. And now my problem:
I want to put the Truss-object on the feet, move 90°
(from the XY axis to Z axis, see sketch 1).
4. Then copy / move the truss to all 36-points of ellipse (see sketch 1).
5. Align the 36 trusses with the center of the triangle .
pointing at the center of the ellipse (see sketch 2).
6. Using a slider to change the position of the 36-Trusses at der ellipse.
Variable distance between Truss and ellipse (see sketch 3).
Thanks for you Answer.
Best regards
Noureddine…
multiply of variants from Galapagos, to have a chance for better analysis and comparability after. I also would like to use more then one solution in my design after.
In old topics i found kind of 3 solutions.
1.Change Galapagos to octopus ( what don t really want to do, i am kind of happy with Galapagos)
2. Use Slingshot! and MySQL Database ( it s look a little bit too complicated from the first view)
3. Use Colibri and Design Explorer Platform (looks kind of pretty way to solve my problem)
So i tried to add Colibri components to my definition , but have some mistake in the Colibri Aggregator after adding the Genome "An item with the same key already been added". I think it comes because for some steps i am using the "Gen Pool" and not a normal slider. Is it a way to connect Gen Pool and Colibri (i really prefer to have it, then a lot of sliders in some cases)?
And the second question (if i will get it solved with gen pool), could i somehow controll the recording process? For example i would likte to record only variants wit fitness over 90% or start recording just after 20. generation and record till the end?
I also opend for all other possibilities to reach the same goal (record/save/bake multiply variants from galapagos)
…
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…
o simulate is someone standing a foot or two from their window, drinking their morning coffee and enjoying their view of the nearby mountain or body of water or whatever landmark is interesting in the area. I realize I'm sort of using the component backwards, but it is really useful in the context I'm applying it in, it is just returning un-realistic results in some situations (where the space needle is 98 degrees off the normal of the window, for example).
The weighting factor could also be folded into this, views closer to normal get more weight for example. In my firm I'm asked to produce this analysis a lot, but I hate giving caveats about this angle issue. It also returns counter-intuitive results, making our shaping of the building seem less impactful than it really is.
Anyways, that is my 2 cents. I might bone up on my vector maths and see if I can't crack it.
Thanks!
Shane…
ils.ExceptionUtils.RemoveData(System.Exception, System.Object)'.
Traceback: line 67, in <module>, "C:\Program Files\Rhino WIP\Plug-ins\IronPython\Lib\types.py" line 6, in <module>, "C:\Program Files\Rhino WIP\Plug-ins\IronPython\Lib\abc.py" line 11, in <module>, "C:\Program Files\Rhino WIP\Plug-ins\IronPython\Lib\_abcoll.py" line 83, in <module>, "C:\Program Files\Rhino WIP\Plug-ins\IronPython\Lib\UserDict.py" line 398, in <module>, "C:\Program Files\Rhino WIP\Plug-ins\IronPython\Lib\os.py" line 9, in <module>, "C:\Program Files\Rhino WIP\Plug-ins\IronPython\Lib\linecache.py" line 6, in <module>, "C:\Program Files\Rhino WIP\Plug-ins\IronPython\Lib\warnings.py" line 43, in <module>, "C:\Program Files\Rhino WIP\Plug-ins\IronPython\Lib\random.py" line 5, in script…
l my nodes in separate lists, from this I've extracted the angles between each axis. Now I'm assuming these are then paired according to the smallest angle. What's the logic behind dealing with an uneven number? Would you make the calculation based on the closest neighbor and apply the result to only that strut?
Secondly I don't quiet understand the calculation, would you mind clarifying this based on the drawing below. Where A1, B1 and C1 are the optimized lengths.
Many thanks!
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