English.
Hi all!
I created .ghx for Parametric Design of Bottle. I defined profile curves giving control points with slider, definition of hight, shifting, and offset based on referenced…
cture, Rhino treats them as a single flat list. For example a surface can have 10 rows and 6 columns of control-points, resulting in a list of 60 points.
But 10 times 6 isn't the only way to get to 60. If you want to make a surface out of a list of 60 points, you'll also have to tell Rhino how those 60 points should be interpreted in terms of a grid. It could be 2*30, 3*20, 4*15, 5*12, 6*10, and all of the aforementioned products the other way around.
Sometimes there's only one way for a number of points to fit into a rectangular grid. For example if you provide 49 points, then 7*7 is the only way to make it work, but these cases are rare so we always demand you give us all the information required to actually make a rectangular grid of control-points from a linear collection.
As for "Why is it, sometimes we need to attach additional value into it?", this is usually because when you divide a domain or a curve into N segments, you end up with N+1 points. For example take the domain {0 to 5}, and divide it into 5 equal subdomains. You end up with {0 to 1}, {1 to 2}, {2 to 3}, {3 to 4} and {4 to 5}. However there are six numbers that mark the transitions between these domains 0, 1, 2, 3, 4 and 5. This is why you often have to add 1 to the UCount, because the number that controls the UCount often results in N+1 actual points.…
Added by David Rutten at 8:30am on December 25, 2014
org/index.php?option=com_community&view=groups&task=viewdiscussion&topicid=20&groupid=2&Itemid=0
But im wondering if there is a way of appliying this to my definition for the bending of a gridshell in various steps of progression until its resting position is achieved.
I can see that the components upon which the stress display is calculated are the start length of the structural members minus the rest length. If the length remains constant as the lathes are bent into shape - is there an alternative method or a way or applying this kind of feedback analysis to this process?
Thanks,
Chris I
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Added by Chris Ingram at 5:24am on October 19, 2011
is forbidden to have two bars at 18.
Flexible rules:
These are the percentages, the accuracy of the match determines a certain amount of fit.
What exactly is the problem? Well, I don't know what a good strategy is to tackle this problem. For example, I can make a python script that randomly picks the bars and when it lands on 18 it will remove the last one and try another. I can execute that script for 20 times and pick the best fit. But that doesn't seem very intelligent, are there better ways?…
s, indeed, surfaces are flat to 0.001", you can walk a straight edge around the surfaces and they are flat. Here it is 3d machined in 6061 aluminum, 20" long, 12 " wide, about 1" deep…
d an object, which allows me to define a value as an input and which then outputs an adjustable number of random values which - if summed - equal the input value. For example I want to define 50 as an input and the output should be 20 + 30 or 20 + 20 + 10 or 25 + 25,...
So basically I need something like a flipped addition object (but with an adjustable number of random output values) Is there anything like that in Grasshopper?
Thanks a lot in advance!
regards
Peter…
Added by Peter Steiner at 3:35pm on November 5, 2012
component I just used different components and GH tools to do the same - and this become part of my short paper submission for SimAUD 2016). My solution compares the height of the same points of different solar envelope and then chose the lowest one. I read about the improvement you are working on and it is good but I think it is not yet what I need (or how the solar envelope tool could be more complete).
What I need is a solar envelope that would guarantee on different facades with different orientations (the example I sent you) a certain amount of direct sunlight, say 4h per day in a given period for example all the month of June at 60°N. So to guarantee the south facing facade I should chose the vectors from 10 to 14. But these are not ok for all the other facades because in this timeframe the East and West facing facades get only 2 hours and the North get 0 hours.
So the fist step would be have the possibility to chose different sun vectors for different facades. For the example I did (the 4 hours in June at 60°N) the south facing facade would need from 10 to 14, the East facing for example from 8 to 12, the West facing facade from 12 to 16 and the North facing facade from 6 to 8 and from 18 to 20.
If I would chose a single longer time frame that could get all these hours, from 8 to 20 then the resulting solar envelope would result probably smaller than the sum of the four solar envelopes.
But this is not complete yet. I mean the use of different sun vectors on different facades. The reason is that for example when I chose the sun vectors from 8 to 12 for the four hours on the East facing facade how do I know that the sun hit on the facade in that time frame or maybe it is obstructed by surrounding buildings? Since the sun at 60°N (where I live) in June rise at around 3.15 then maybe for that specific facade the sun hit from 4 to 8 and not from 8 to 12.
I did an extreme case talking about 60°N and that maybe the sun hit on a facade at 4 instead than 12, but it is just to make understand the logic. My suggestion for a more advanced solar envelope it should be integrated with the Sunlight Hours tool of ladybug. So the input should not be the sun vectors because I don't know when the sun hit on the facade but the input should be just the desired number of hours and the possibility to specify different number of hours for each facade. Then this last component that sum different solar envelope (I didn't use it yet but I understood what it does) should be integrated yes so the result would be one single solar envelope more likely using the lowest points (the highest I don't understand what for).
Let me know what you think!
…
- 100.
After that, I want to separate it into 5 different lists in spesific thickness.
in this case of 0-100 so it would be :
1. if the distance 0 - 20 then the thickness is 5
2. if the distance 21 - 40 then the thickness is 10
3. if the distance 41 - 60 then the thickness is 15
4. if the distance 61 - 80 then the thickness is 20
5. if the distance 81 - 100 then the thickness is 25
But, the problem is the list of distance isn't static between 0-100. It could be 5 - 250 / 3.5-175/etc.....
Could you help me how to make the expression?? Is this possible if I make one expression?
thank you.
Z.
nb: distance and thickness hasn't mathematical relation.…
Added by ZAQI FATHIS at 8:43am on November 27, 2013