RobPerkins wrote at 2012-10-02 04:51:

I've gotten myself lost again. 

Well, not that lost; my application is using the HelixViewPort3D, which of course comes with the ViewCube and key bindings for orienting views. That's working perfectly. 

Now I have other UI elements *around* the HelixViewPort3D in the same UserControl which I'd like to configure to send commands to the HelixViewPort3D's camera controller. I had thought to do this with three buttons formatted something like this: 

            <dxb:BarButtonItem Content="XZ Front View" Command="{x:Static h:CameraController.FrontViewCommand}" CommandTarget="{Binding ElementName=VP, Path=CameraController}" />
       

I'm not sure how to proceed, or whether it's possible. The CameraController exposes a RoutedCommand named "FrontViewCommand" so I thought this syntax would work. 

Any ideas? 

RobPerkins wrote at 2012-10-02 05:14:

Never mind; exactly those XAML bindings work... if the focus is on the ViewPort. This is the only Viewport in the control, though, so I'm not sure why an automatic CanExecute isn't being routed through...

matthewfrazier wrote at 2010-10-12 17:23:

I'm trying to create a simple tube which I can do fine using this wonderful toolkit.  What I'm having a problem with is perspective or scaling.  Using the given array list of xyz coordinates I draw my tube BUT I can't make it "look right" in my view. I tried dividing by 1000 but that obviously just keeps the same problem just on a smaller scale.  My issue is that my z coordinate is always going to be much larger than my xy.   I want to create a tubing path for my users to view so they can see the deviation of the tubing.  I can do this with a simple xyz scatter plot in winforms but I want to be able to have the 3D camera control in WPF to give the users more perspective.  Any ideas?

private void LoadArrayList()
        {
            _x = new ArrayList() { 0, 1.31, 2.71, 3.06, 3.48, 4.69, 6.8, 9.51, 12.37, 15.75, 19.65, 23.76, 30.21, 38.89, 47.77, 56.81, 69.86, 78.23, 86.62, 96.26, 107.4, 117.4, 125.63, 133.91, 142.02, 148.47, 152.32 };
            _y = new ArrayList() { 0, 4.76, 7.19, 6.56, 6.76, 8.31, 11.66, 16.48, 22.3, 29.07, 36.08, 43.1, 54.16, 69.78, 85.66, 101.81, 124.95, 140.06, 154.96, 169.97, 185.11, 198.52, 210.58, 222.8, 235.48, 245.87, 251.77 };
            _z = new ArrayList() { 0, -463.96, -775.94, -901.94, -964.94, -1027.91, -1091.78, -1155.54, -1217.2, -1279.74, -1342.23, -1404.7, -1497.83, -1622.55, -1747.23, -1872.88, -2060, -2184.81, -2309.64, -2434.37, -2558.96, -2683.84, -2808.99, -2934.12, -3059.22, -3161.49, -3221.08 };
        }

        private void BuildTube()
        {
            var pc = new Point3DCollection();
            for (int i = 0; i < (_x.Count); i++)
            {
                pc.Add(new Point3D((Convert.ToDouble(_x[i]) / 1000.00) * 5, (Convert.ToDouble(_y[i]) / 1000.00) * 5, (Convert.ToDouble(_z[i]) / 1000.00) * 5));
            }
            tube.Path = pc;
        }

objo wrote at 2010-10-13 08:09:

can you change only the scale of the z-coordinates?

  var _x = new List<double> { 0, 1.31, 2.71, 3.06, 3.48, 4.69, 6.8, 9.51, 12.37, 15.75, 19.65, 23.76, 30.21, 38.89, 47.77, 56.81, 69.86, 78.23, 86.62, 96.26, 107.4, 117.4, 125.63, 133.91, 142.02, 148.47, 152.32 };
  var _y = new List<double> { 0, 4.76, 7.19, 6.56, 6.76, 8.31, 11.66, 16.48, 22.3, 29.07, 36.08, 43.1, 54.16, 69.78, 85.66, 101.81, 124.95, 140.06, 154.96, 169.97, 185.11, 198.52, 210.58, 222.8, 235.48, 245.87, 251.77 };
  var _z = new List<double> { 0, -463.96, -775.94, -901.94, -964.94, -1027.91, -1091.78, -1155.54, -1217.2, -1279.74, -1342.23, -1404.7, -1497.83, -1622.55, -1747.23, -1872.88, -2060, -2184.81, -2309.64, -2434.37, -2558.96, -2683.84, -2808.99, -2934.12, -3059.22, -3161.49, -3221.08 };
        
  var pc = new Point3DCollection();
  for (int i = 0; i < (_x.Count); i++)
            {
                pc.Add(new Point3D(_x[i], _y[i], _z[i]*0.01));
            }
  tube.IsPathClosed = false;
  tube.Path = pc;

dcrysty23 wrote at 2014-08-12 12:45:

 xmlns:helix="clr-namespace:HelixToolkit.Wpf;assembly=HelixToolkit.Wpf"
 xmlns:helixInput="clr-namespace:HelixToolkit.Wpf.Input;assembly=HelixToolkit.Wpf.Input"

shaelyn wrote at 2014-02-28 14:40:

iLovePasta wrote at 2013-01-20 10:34:

Hi,

is there any possibility to change dimensions of rendered *.jpg file from HelixViewport3D. It seems to me, that it adjusts dimensions of exported image according to current ViewPort size. But I'm not able to change these via none of it' properties like Width, RenderWidth, even a ScaleTransform does not seem to make things happen.

Do You know how is possible to change export sizes? Typical use case - I want to export in, say, 800x600 & 1024#768 resolution etc.

Thanks.

edit: It looks like I'm spamming here:), but it's my second post & again...after trying to resolve the problem like for an hour or so, I wrote here & suddenly after few minutes, I figured out how to do this.

If somebody is interested in future - You have to access HelixViewport3D's property ViewPort, where You shold define rendersize property.

objo wrote at 2013-01-23 20:32:

Thanks for posting the solution to your problem.

I think the Viewport3DHelper.RenderBitmap method should be overloaded with a method where you can specify the width and height.

Did you also notice the "oversampling" multiplier feature in that method? It is good for software rendering!

NMorgan wrote at 2011-08-22 16:45:

I was wondering how I could get the cordinate bounds that are being displayed in a viewport?  For instance the top left corner is (-100,100) and the bottom left corner is (100,-100).

objo wrote at 2011-08-22 20:37:

hi NMorgan, I don't quite understand what coordinates you need. Do you need the actual client rectangle of the HelixView control? Did you try

new Rect(VisualOffset.X, VisualOffset.Y, ActualWidth, ActualHeight);

(Temporarily arranging a control to VisualOffset=(0,0) helped me out in another project when I was rendering to a RenderTargetBitmap..)

If you need to project 3D coordinates on the 2D view, see the Helpers/ViewPort3DHelper class.

NMorgan wrote at 2011-08-23 14:49:

Hello, thanks for the reponse what I am looking for a rectangle (or just the coordinates of the points) that represents the area being displayed by the viewport. 

objo wrote at 2011-08-23 15:48:

Still do not understand. The HelixView control displays a 3D frustum (when using a ProjectionCamera).

NMorgan wrote at 2011-08-23 15:50:

I am using a orthographic camera not a projection. Basicly if I wanted to draw a point at the upper right hand corner of the viewpoint how would I go about getting the coordinates of that point.

objo wrote at 2011-08-23 20:24:

try

HelixToolkit.Viewport3DHelper.Point2DtoRay3D(yourViewport, new Point(yourViewport.ActualWidth,0))

I have not tested it, but I think this will work with an orthographic camera. Note that this will give you a ray, you can use the Point2DtoPoint3D method if you want a point at the near or far clip plane.
Petzold's 3D programming book could also be a good source for more solutions to this!  

francolico88 wrote at 2013-04-04 17:06:

objo wrote at 2013-04-15 12:12:

ftp25 wrote at 2013-05-30 14:11:

objo wrote at 2013-06-08 07:20:

ftp25 wrote at 2013-06-16 21:47:

var g = new Transform3DGroup();
g.Children.Add(rotateTransform);

                     <Transform3DGroup>
                            <RotateTransform3D>
                                <RotateTransform3D.Rotation>
                                    <AxisAngleRotation3D Axis="0,1,0" Angle="{Binding RotationAngle}"/>
                                </RotateTransform3D.Rotation>
                            </RotateTransform3D>
                        </Transform3DGroup>

Ranik wrote at 2014-04-15 12:20:

objo wrote at 2014-04-29 10:27:

alexalthauser wrote at 2012-02-19 00:21:

Hi,

Are the Helix controls meant to show in the toolbox? Mine do not. If they are, which I kind of doubt, but if they are, can somebody plz give me a point in the right direction? I thought they might, since they are referred to as 'custom controls', but I could be mistaken. Either way, it's a really great library.

Thanks!

objo wrote at 2012-02-21 20:45:

are you auto populating the toolbox items? http://karlshifflett.wordpress.com/2009/10/27/new-options-for-visual-studio-2010-beta2-wpf-and-silverlight-projects/

I think it is also possible to right click in the toolbox and "choose items...", but I have not tried myself. All HelixToolkit.Wpf controls are showing up in the toolbox when I open the HelixToolkit solution here.

Rahvil wrote at 2011-09-07 12:13:

Hi again,

Is it possible to set the cameras target point from code. I found target point property from HelixView3D.CameraController.CameraTarget but it's read only. So basically what I would like to achieve from code is the same as double right clicking the model.

Thanks for the help in advance.

objo wrote at 2011-09-07 21:24:

Do you want to change the camera position or the look direction? I think that was the reason I did not add a setter.We could add a setter that changes one of these properties. Also notice that the CameraTarget is a plain property, not a bindable dependency property.

Rahvil wrote at 2011-09-12 10:08:

Thanks for the reply.

I achieved to do what I needed by changing camera position and look direction.