@Vestmann : could you tell me if the new version asks you the same problem as the previous version.

@piersyf : I will answer you on the two subjects of your post.

The selection of vertices has been a great difficulty to write. In addition to the methods that I had integrated in the program to its beginning, some users have asked me to add new methods. I think that, in the current state, the existing methods allow to make any kind of selections. The operations of the calculator type are the only one able to offer much flexibility. Some clothes selections require a rather complex selection but it should be remembered that .RIP files allow to repeat simulation parameters.

As regards the types materials: cotton, wool, leather etc ... I tried to explain why I have not done it and why I will not do it.

I tried many cloth simulators and I've never found that the type of material corresponded to that proposed. I'll try to give you a technical explanation.

First, more than thirty years in the field of development of programs linked to the numerical simulation, have taught me that the operation "click button" never works. What for :

To successfully assign a behavior of a certain type of fabric to a mesh, we need three conditions, it is necessary to know: the mesh size, the shape of the mesh and regularity of the mesh. Apart from some adaptive quadrilateral meshes that generally yield poor quality simulation results, there is the quadrangle and the triangle. The quadrangle does not achieve meshes with regular size. The only solution to obtain a regular mesh is to work with equilateral triangles. To be able to create a pattern of behavior, the mesh size must be all identical. The best mesher program to achieve this, is called HyperMesh and costs tens of thousands of euros per year. There is also a free mesher that often gives very good results and is called GMSH. In both cases, it is necessary to start with a geometry file (.STEP, .IGES). If you meet these requirements, then you can claim to affect a repeatable behavior to a mesh. These conditions are hardly met in dynamic clothes. For conforming clothes, that, remember it, were not created for the purpose of simulation at the time of their creation, these conditions are never met. I refuse to have a cloth to which I claim to assign a cotton behavior and that behaves like leather as seen too often.

Please excuse me for such explanations that may seem too rigid, but I have not written VWD to look like the others, but only because the others did not allow me to do the simulations I wanted to do.

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