thecake wrote at 2012-10-12 13:46:

The HelixViewport3D has a ModelUpDirection property, which affects the turning directions of the Camera - the anaglyph view does not have this property.

How can I change the ModelUpDirection of the anaglyph view, that it corresponds with the Cameras UpDirection?

thanks!

objo wrote at 2012-10-14 16:00:

It should be possible to bind the ModelUpDirection of the CameraController inside the AnaglyphView. I added the issue http://helixtoolkit.codeplex.com/workitem/9970

BogusException wrote at 2014-07-22 19:57:

objo wrote at 2014-08-08 12:46:

SagarDabas wrote at 2013-03-31 08:05:

public static readonly DependencyProperty PointsProperty = 
DependencyProperty.Register("PointsList", typeof(Point3DCollection), 
typeof(AreaChart), new UIPropertyMetadata(null,
 GeometryChanged));


 public Point3DCollection PointsList
    {
        get
        { return (Point3DCollection)this.GetValue(PointsProperty); }

        set
        { this.SetValue(PointsProperty, value); }
    }

<local:AreaChart PointsList="0,0,8 0,-10,11" Extrusion="2" />

SagarDabas wrote at 2013-03-31 09:35:

bluerobotz wrote at 2013-04-28 10:44:

objo wrote at 2013-04-30 23:12:

objo wrote at 2014-08-26 11:24:

Rogad wrote at 2014-08-26 17:45:

BogusException wrote at 2014-08-26 19:39:

Rogad wrote at 2014-08-26 20:44:

objo wrote at 2014-08-27 08:37:

objo wrote at 2014-08-27 09:35:

BogusException wrote at 2014-08-27 21:53:

objo wrote at 2014-08-27 23:38:

BogusException wrote at 2014-08-28 18:04:

objo wrote at 2014-09-01 07:42:

charismatubagus wrote at 2013-01-25 07:50:

Hi I am a newbie in HelixToolkit. I would like to load 3D model (.obj and .mtl) into the scene. However, I can only load the object. The material can't be seen.  

This is my code.

<h:HelixViewport3D Canvas.Left="377" Canvas.Top="253" Name="helixViewport3D1" Margin="195,190,185,12">
     <h:FileModelVisual3D x:Name="model3D" >
                
     </h:FileModelVisual3D>
</h:HelixViewport3D>

string _3DClothPath = (string)Application.Current.FindResource("3DClothes");
model3D.Source = _3DClothPath;

rinaldin wrote at 2013-10-27 13:25:

For Each element As ContainerUIElement3D In HelixViewport3D1.Children
                Dim position = Overlay.GetPosition3D(element)
                Dim position2D = matrix.Transform(position)
                If position2D.X > rectOrig.X And position2D.X < (rectOrig.X + rect.Width) And _
                   position2D.Y > rectOrig.Y And position2D.Y < (rectOrig.Y + rect.Height) Then
                    ' select element
                    Dim element1 = TryCast(sender, ModelUIElement3D)
                    Dim model = TryCast(element1.Model, GeometryModel3D)

                    If model.Material Is Materials.Green Then
                        model.Material = Materials.Yellow ' is selected!
                    ElseIf model.Material Is Materials.Yellow Then ' deselect
                        model.Material = Materials.Green
                    End If

                End If

            Next

rinaldin wrote at 2013-10-28 15:52:

rinaldin wrote at 2013-12-20 20:31:

objo wrote at 2014-01-07 22:34:

AnotherBor wrote at 2014-01-08 02:15:

objo wrote at 2014-01-08 07:30:

Lainy wrote at 2013-10-18 23:04:

DK_danik wrote at 2013-10-22 13:56:

RobPerkins wrote at 2012-11-08 17:28:

I'm trying to think of a way to add something like a BillboardVisual3D such that its position stays fixed relative to the camera. Ultimately it would have an ArrowVisual3D reaching from the Billboard into the model space itself, pointing at a feature. 

This would mean that as the camera is rotated, panned, zoomed, etc, the control would stay "stuck" to the front of the frustum, as it were. 

If I understand things correctly the camera in Helix3D is the thing doing the moving during panning, rotating, and zooming; no transformations are computed on the model itself. 

How would you approach this?

objo wrote at 2012-11-12 22:15:

Yes, in this library the camera properties are modified, not the world or camera transforms.

You need to update the 3D positions of your visuals each time the camera move. I think you could create a plane at the camera 'target' position, with the camera direction as the normal vector. Then use Viewport3DHelper.GetRay and Ray3D.PlaneIntersection to calculate the 3D positions.

RobPerkins wrote at 2012-11-12 23:05:

Good; that signifies an approach I could take. What if instead of doing that, we simply position the control in the visual tree as a 2D ContentControl atop the viewport, and then extend an ArrowVisual3D from the frustum front to a world coordinate? Would the same ViewPort3DHelper and Ray3D methods be useful, or is there something simpler?

(Yes, I can figure this out on my own, but I thought the discussion here would be beneficial to others.)

objo wrote at 2012-11-13 06:05:

Yes, that should also work - I have tested 2D overlays in the ExampleBrowser/OverlayDemo. The "target" adorner and "zoom by rectangle" features in HelixViewport3D are also 2D overlays.