How to switch to wireframe display mode for a Viewport3D control in WPF?

Question

Is there any way to do this? I am looking for something like this:

viewport3dControl.DisplayMode = DisplayMode.Wireframe; 

Instead of the current shaded one.

Or do I need to set this for each object that I want to display as a wireframe? If so, how?

Answer 1

It is not as simple as we would like, but it can be done using some library. Cm:

• 3D Tools for Windows Presentation Foundation

In particular, in the ModelViewer sample, the "View → Wireframe" checkbox is selected, which does what you want. The sample is small, so you can see how it can be applied to your situation.

Answer 2

The same answer is also posted here:

Migrating a wireframe to WPF

I have seen many answers related to third-party solutions for this problem.

For a clean WPF solution, I create a new Model3D from an existing Model3D, where each facet is created with a hole in it. those. split into 6 new faces with the width of each "line" proportional to the original size of the facet.

The reason for this is that it looks better than a fixed line width, but you can use a fixed line width if necessary.

Optionally, fill the center hole as a new face in black (separate 3D model in the group), and you have a hidden line removal.

For the three points in facet A0, B0, and C0, calculate the midpoints AB, AC, and BC. the new point A1 is 1/20 along the line to BC. Repeat for the next two points B1 and C1.

6 new faces for the “lines” are represented by the following combinations:

A0, B0, B1
A0, B1, A1
A0, C1, C0
A0, A1, C1
B0, C0, C1
B0, C1, B1

Add A1, B1 and C1 to another model for the option to remove the hidden line.