C#，显示和导航结构 3D FEM model（螺旋工具包，SharpDX？）

Question

Hello. I am trying to implement a simple way to display the deformed shape of a beam, I found HelixToolkit that offers perfect tools, but I can't find the way to display different tiles of the same mesh with a different colour. or gradient: I found this: https://github.com/helix-toolkit/helix-toolkit/issues/885 that is the adding of the VertColorMaterial property, but it looks like it is for SharpDX library, but I started with HelixToolkit wpf (don't understand if in HelixToolkit is also available).

I can't even find a way to do it with SharpDX: it looks that there is almost no doc in internet.

Additionaly, SharpDX stopped its developement.

So:

• do you know any example?
• do you suggest me another library, which is fast/offers the ability of navigate the model, and it is compatible/use the wpf framework?

I also would like the ability to refine and subdivide a mesh.

Any kind of advice would be useful, I am new to the world of computer 3d graphic.

Thanks

EDIT 1:

I followed JonasH hint applying a texture, but it apply the texture for each tile. (See image).

I can only dinstict by out materian and in materia (set in the picture as Hue and the arrow Texture).

I need to apply one color for each polygon to give to the mesh a "FEM" style. Do you know how is it possibile with HelixToolkit?

Answer 1

You might consider using Kitware VTK instead of HelixToolkit. It's extremely powerful library for scientific data visualization, well documented, perfect for finite element pre and post processing. You can take a look on my app, unfortunately it has not been documented yet, but just as an example: https://github.com/galuszkm/STAN

Answer 2

I assume you have a color per vertex you want to use. I would recommend using wpf or helixToolkit wpf since they are quite easy to use. But as far as I'm aware they do not support vertex coloring.

A workaround would be to use a texture. I would assume you want to visualize some scalar property as a color. You would first need to create your MeshGeometry and assign the TextureCoordinates , simply assign the value you want to visualize to one of the texture coordinates in the 0-1 range. You would also need to create a gradient texture, either a gradientBrush or create an image. You would then assign the brush like:

        var brush = new ImageBrush()
        {
            ImageSource = new BitmapImage(new Uri("gradient.png", UriKind.Relative))
        };
           
        var material = new DiffuseMaterial(brush);
        GeometryModel3D model = new GeometryModel3D(mesh, material);