Hello everyone,

First of all big thanks to the creators and contributors of the Helix Toolkit and of course thanks for sharing this with all of us.

So about my question...

the native HellixToolkit has this nice sandbox example with a teapot being visualized.

https://github.com/helix-toolkit/helix-toolkit/wiki/Getting-started-with-WPF-3D

I was wondering if somebody could share something similar for the HelixToolkit + SharpDX extension. ( create basic lighting and a basic object, say a box, in a code as small as possible, preferable only in XAML )

This would be extremely helpful when taking a closer look at one certain functionality or when sharing a certain problem on this forum.

I don't' have much of a programming background, depending quite on the example in the source code, which tend to be rather bulky.

But honestly I don't have a clue how i would compress this in one smaller example that can be easily shared in a forum.

Can somebody help me out with this?

I'm using a HelixViewport3D to display a collection of Point3D objects derived from raw magnetometer readings. Magnetometer X,Y,Z reading can vary from very small values (<< 1) to well over 5000.

When my program starts, I load a small collection of points whose radius is <= 1, as shown in Figure 1

After loading my actual magnetometer data, all points are very far off-screen (Figure2), but zooming out with the mouse wheel allows me to see them all, and rotate/pan/zoom as desired (Figure3):

I decided to try calling ZoomExtents() after loading all the magnetometer points, in order to avoid having the user panic when no points were visible immediately after loading, but this resulted in points being clipped regardless of the zoom level produced by zooming in or out with the mouse wheel (See Figure4 below). I also tried using the 'S' command to move the camera position out, but the camera position moves so slowly using this method that it was unusable for my purposes.

At the moment, I'm not quite sure how to proceed. Any idea what I'm doing wrong with the ZoomExtents() command?

TIA,

Frank

I am rendering a point cloud in WPF using PointsVisual3D and Point3DCollection. This all works well, and I now want to put a set of 3 principal plane-oriented 3D ellipses into the view as a set of reference circles. I am currently using 3 EllipsoidVisual3D objects with two of the radii set to 1 and the third set to zero to accomplish this, but I have a couple of problems

• I can't seem to change the fill color. I have tried using the material and/or Fill properties for this, but nothing seems to affect the default (black) color
• I would really like to have these objects be rings instead of disks, so they obscure as few data points as possible, but I can't figure out how to do this, either :-(

Any thoughts or pointers would be appreciated.

TIA,

Frank

I am developing an application using Helix toolkit in which users are given control to click on the individual 3d models that have loaded and manipulate them independantly. 3d model loader in my application can load ModelVisual3D type models. the tutorials so far I could find were on performing hit testing on Model3D type models which didn't work with ModelVisual3D type whatsoever. Can anybody help ?

I am doing a project using helix 3d toolkit in which a background image is overlayed with helix3d viewport that displays 3d models on top.So far everything works fine except 3d models appear unrealistic on the interior image since they dont cast any shadoes to the light. Does anybody know how to add shadows for each 3d model in viewport ?

Hi,

I would like to add a second view to my program so that the scene can be viewed from 2 different angles.

Can anybody give me a hint how to achieve this? Preferable without doubling the scene :D

I have added 2 tubes using the same list of points, but tube A is rotated approx 90 degrees around its axis relative to tube B. I am using MeshBuilder.AddTube(points, diameter, 5, false);

Since the tube is square instead of round, this is noticeable. How can I control the rotation of the tube geometry?

Thanks for any feedback!

I would like to only change material in certain parts of my imported object. I want to simulate brain activity. I am using an imported .obj and I would like to draw/change texture of the object only on the right side. Is that possible within Helixtoolkit?

I want to plot textual data into 3D plot instead of spheres or other shapes. Texts like 1,2,3 or A,B,C... or P1, P2... etc...

Hello,

I started billboard demo and i have problem. Text billboards are moving around the screen when I zooming or rotating camera. Problem occurs only when camera is in inertia mode after zooming wheel or releasing right mouse button.

I attached below recorded behaviour posted on YouTube.

I noticed that when you add billboards in xaml file everything is working fine, but i have to inserting text billboards dynamically in program.

Best regards,

Mateusz