I looking for option in engine, to turn on Vertex Buffer optimization, or any other optimization.
When i was writing my own engine on SharpDX, I have got 20ms per render on 20,000,000 points and 60,000,000 triangles objects. But with HelixToolkit.SharpDX.WPF I even cant render 2,000,000 points because its laggig to much.

Hello.

Can someone please provide a Visual Basic version of the ModelViewer example in https://github.com/helix-toolkit/helix-toolkit/tree/master/Source/Examples/WPF/ModelViewer?

In helix toolkit double right click can change the center target. How can I do the same in SharpDX?

I hawe ViewPort and many "TubeVisual3D" generated on it.

Is there a way to select and delete or edit this visuals?

Hello guys!

I have one question about bounds property of MeshGeometryModel3D.

When I create new instance of MeshGeometryModel3D it has "bounds" property {Minimum:X:0 Y:0 Z:0 Maximum:X:0 Y:0 Z:0}. If I add to this model some geometry (sphere for example) with center in (500, 500, 0) and radius 5, my MeshGeometryModel3D will have "bounds" property like {Minimum:X:0 Y:0 Z:-5 Maximum:X:505 Y:505 Z:5}!

So my question is: is there any method to set "bounds" property of MeshGeometryModel3D by geometry, which this model contains? To receive in this particular example something like {Minimum:X:495 Y:495 Z:-5 Maximum:X:505 Y:505 Z:5}.

Thanks in advance!

Hello guys! Thank you for great toolkit!

I have 2 questions, maybe anyone can help me:

First: I want to import obj model (with textures) and display it in Viewport3DX. How to do it correctly?
Now I have next:

ObjReader Reader = new HelixToolkit.Wpf.SharpDX.ObjReader();
List<Object3D> objs = Reader.Read(ModelPath);

After reading objs variable contains near 1000 objects. What shall be the next steps to to display model in viewport?

Second: And one more question: How to receive cursor position in Viewport3DX. Is there some property like CursorPosition in HelixViewport3D?

Thank you in advance!

LinesVisual3D doesn't properly cat by cutting plane. In my example code:

<ht:CuttingPlaneGroup x:Name="CuttingGroup" IsEnabled="True">

<ht:CuttingPlaneGroup.CuttingPlanes>

<ht:Plane3D Normal="0,0,1" Position="0,0,0"/>

</ht:CuttingPlaneGroup.CuttingPlanes>

<ht:CubeVisual3D Center="4,4,2" SideLength="8"/>

<ht:LinesVisual3D Points="0,0,-10,0,0,22" Thickness="3" ></ht:LinesVisual3D>

</ht:CuttingPlaneGroup>

When cuttingPlaneGroup is disabled it looks good:

When cuttingPlaneGroup is enabled, line is one-side-visible and has wrong size and direction:

Hi all!!

I have the 3d model in Blender. It has several objects (meshes).

I export the model and load it into helix. How can I get a link to mesh by it's name? GetName() functions retun null.

Can it be done already?

I would like to add an Element3D to the scene (a CoordinateSystem) when the user selects an object, but it should always be "on top" so it can be seen, even it is in the Element.

Greetings

Egon

I have a HelixViewport3D window in a WPF app, with Pan and axis coordinate features enabled. I am rendering a 'point-cloud' using PointsVisual3D. When I Pan the point-cloud around, the coordinate axis stays in the center of the view instead of moving with the point cloud, and this seems wrong. I thought that the 'Pan' operation simply translated the camera around in the current viewing plane, which would make everything in the model (including the coordinate axis symbol) move together, but clearly this is not the case.

This screenshot shows the situation: The left-hand HelixViewport3D viewport shows a point collection panned off center, while the right-hand viewport shows the original, unpanned setup.

What am I missing, and what do I need to do to make sure the coordinate symbol stays in the same relative position with respect to other model elements when panning the view?

TIA,

Frank