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algorithmic modeling for Rhino

Gregory Quinn
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  • Germany
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MeshInclusion error
2 Replies

Dear Hoppers,I'd be delighted if anyone can help me out with this one. I hope this isn't painfully simple, however I don't think so...In the attached file, I have two (seemingly) closed meshes and a…Continue

Started this discussion. Last reply by Gregory Quinn Jun 1, 2016.

 

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Gregory Quinn replied to Gregory Quinn's discussion MeshInclusion error
"Dear Daniel, thank you so much! Yes, I had tried using the "Mesh Flip" and while that inverts the volume value, it didn't correct the Inclusion issue. Your VB script does however... so thank you very much for this!! :) I'm…"
Jun 1, 2016
Daniel González Abalde replied to Gregory Quinn's discussion MeshInclusion error
"Your file crashed my Rhino, luckily I have not lost anything.You had the mesh inverted (inward normal vectors), so it gave a negative volume. Just flip the mesh (and why not, also clean it)."
Jun 1, 2016
Gregory Quinn posted a discussion

MeshInclusion error

Dear Hoppers,I'd be delighted if anyone can help me out with this one. I hope this isn't painfully simple, however I don't think so...In the attached file, I have two (seemingly) closed meshes and a floating point. When testing for MeshInclusion of the point, only the second mesh returns a True statement. However, as far as I can tell both meshes are actually closed (since I can measure the volume for each).What is at fault with mesh one and how can I go about identifying/correcting that…See More
Jun 1, 2016
Gregory Quinn replied to Gregory Quinn's discussion Threshold query in the group Kangaroo
"Hi Dan, I'm making reference to VSum and convergence threshold in my paper. Just to clarify is VSum a root mean square value? According to your description above you don't take the root... so would that mean the final VSum is a squared…"
May 16, 2016
Gregory Quinn is attending Anders Holden Deleuran's event
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sg2016: Calibrated Modelling of Form-Active Hybrid Structures at Chalmers University of Technology, Gothenburg, Sweden

April 4, 2016 to April 9, 2016
One week left to apply for SmartGeometry 2016 clusters! If you're into Kangaroo2-ing and hybrid structures you should come join our team. Which, in addition to Gregory Quinn and Anders Holden Deleuran, consists of…See More
Feb 8, 2016
Gregory Quinn replied to Miguel Vidal's discussion Change current view in Rhino´s viewport
"This is fantastic! Thank you for sharing."
Feb 5, 2016
Gregory Quinn replied to Gregory Quinn's discussion How to automate actions after waiting for K2 to converge for sequential input changes in the group Kangaroo
"Since custom goals are not compatible with a custom K2 solver, an alternative to check whether K2 is still solving would be to passively read downstream output, as per the attached example. This method works and is not sensitive to wider custom…"
Jan 18, 2016
Gregory Quinn replied to Gregory Quinn's discussion How to automate actions after waiting for K2 to converge for sequential input changes in the group Kangaroo
"Interestingly, the custom script can't seem to accept the FloorPlane goal. Object reference issues (?). See attached. As far as I can tell, it doesn't have an issue with the other goals, just FloorPlane. Any ideas anyone? Regards, Greg"
Jan 15, 2016
Gregory Quinn replied to Gregory Quinn's discussion How to automate actions after waiting for K2 to converge for sequential input changes in the group Kangaroo
"Hello! So I've been able to make some decent progress with the file that Anders shared last. I now have a pretty cool and versatile custom script which I wanted to share with the community - I'm sure others will be able to benefit from…"
Jan 15, 2016
Anders Holden Deleuran replied to Gregory Quinn's discussion How to automate actions after waiting for K2 to converge for sequential input changes in the group Kangaroo
"The attached seems to work. Although updating/changing goal values probably will not work with scripted goals though. Just FYI :)"
Dec 21, 2015
Gregory Quinn replied to Gregory Quinn's discussion Output mesh from one Kangaroo engine to provide input collision mesh for second engine? in the group Kangaroo
"Dear Eike, thank you! Yes in fact we are making good progress on this front! Kangaroo 2 goals can indeed (and usually are) scripted such that they are based on real-world mechanical properties. Daniel does list most of the input units in the K2…"
Nov 27, 2015
Eike Schling replied to Gregory Quinn's discussion Output mesh from one Kangaroo engine to provide input collision mesh for second engine? in the group Kangaroo
"Hi Greg, Great to see your progress from this post, to your presentation at the Membranes, Barcelona in October! I would like to join your question about material properties: "For the sake of carrying out further experiments, I will need to be…"
Nov 27, 2015
Gregory Quinn added a discussion to the group Kangaroo
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How to automate actions after waiting for K2 to converge for sequential input changes

Hello world,this is perhaps a broad question, but nonetheless I'd be extremely grateful of any help or pointers.For an arbitrarily slow/big K2 simulation with some variable input parameter (see file attached), I'd like to automate a downstream action (in my case: push a button and store some data) when, and only when, K2 has successfully converged. Once the convergence and action have been completed, I'd like to tell the input variable to change.As the power of K2 grows, so too does its…See More
Nov 24, 2015
Daniel Piker replied to Gregory Quinn's discussion Threshold query in the group Kangaroo
"I think it's a reasonable question. Using the residual is surely the more correct way of doing things. For many applications though, I felt that the default velocity threshold of 10^-15 was small enough that these distinctions didn't…"
Nov 11, 2015
Gregory Quinn replied to Gregory Quinn's discussion Threshold query in the group Kangaroo
"Yes, thank you! Ok, so it is a velocity vector. The velocity of the particles however I assume is not affected by the "speed" of the convergence or vice versa... meaning that for the case described above, a given threshold should produce…"
Nov 11, 2015
Daniel Piker replied to Gregory Quinn's discussion Threshold query in the group Kangaroo
"Hi Greg, It sums the square of the velocity of each of the particles, then divides by the number of particles. If the result is less than the input value for "threshold" it stops, if not it keeps iterating. Hope that is clear and answers…"
Nov 11, 2015

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Universität der Künste Berlin

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