WPF 3D engine does not support 3D pixels. You could "fake" it with using a 3D plane (PlaneVisual3D) that would be always oriented to face the camera (PlaneVisual3D has a AlignWithCamera method) and adjust its size when the camera changes (to get the desired 3D size you can use the Ab3d.Utilities.CameraUtils.GetPerspectiveWorldSize method).
But this will work for showing only a limited number of pixels because the performance will not be good.
If you want to show many 3D points then you should use Ab3d.DXEngine (https://www.ab4d.com/DXEngine.aspx). It supports hardware rendering of pixels and with using a decent graphics card it can render hundreds of millions of pixels. See the samples project that comes with Ab3d.DXEngine library.
Here you can see two screenshots:
https://www.ab4d.com/images/DXEngineGall...Engine.png
https://www.ab4d.com/images/DXEngineGall...ptions.png
But this will work for showing only a limited number of pixels because the performance will not be good.
If you want to show many 3D points then you should use Ab3d.DXEngine (https://www.ab4d.com/DXEngine.aspx). It supports hardware rendering of pixels and with using a decent graphics card it can render hundreds of millions of pixels. See the samples project that comes with Ab3d.DXEngine library.
Here you can see two screenshots:
https://www.ab4d.com/images/DXEngineGall...Engine.png
https://www.ab4d.com/images/DXEngineGall...ptions.png
Andrej Benedik