This is likely because the default value for the “constant” input is not working properly (Some users have reported this type of issue)
It is very easy to fix: Just manually input a vector into the “constant” input. In this case, you should use the vector value (0, 0, -0.1) because that is this default value for “constant”
Hy LongNguyen, first of all I have to thank you for your great contribution. It’s simply fantastic…
Right now I’m reading a bit about Form Finding and optimization applied to structural engineering. And, of course, your package is very useful.
I only have one question: What method do you use to determine the equilibrium surface? Is it the force density method or some other? I would like to understand the bases.
At this moment I have not read the code. But I will soon.
However I am having problems installing it and I have tried everything I can imagine. I have carried out all the instructions as per your installation post. Please help. See screen shot.
Have you used the installer package or have you done some manual file placement? This has worked very recently for me with no issues.
The installer was from the link @LongNguyen provided at the start of this topic http://bit.ly/2w3nD0k
Hi Felix. The equilibrium is essentially achieved using an iterative error minimization algorithm that works very similar to Jacobi method for solving over-constrained system of linear equation.
The implementation in DynaShape, however, does not use matrix notation as in the paper. Otherwise it will be quite tricky for users to define custom goals/constraints.
I am still working on the next DynaShape release, which will be compatible with Dynamo 2.0
I expected so.
But, at least in theory, Dynamo 1.3 doesn’t work with 2015 (hope all the 2015 projects will be done soon ).
I’m in no haste to use DynaShape but it does look pretty amazing to try out.