I made a 3d model in 3dmax. There is a fan in the model. I want to rotate the fan. There are some questions:

1. How can I get handler of the fan? I named the fan in the 3ds file. Can I get the handler?
2. How can I rotate it? There are two examples in Helix, however, the elements were generated in the examples, other than from 3ds file.
3. How can I change the color of the fan using Helix?
   

Thanks again for this amazing toolkit. And many many thanks to Objo!

Regards,
Young

I have the same problem.

Manipulation events don't work inside a ScatterViewItem.

Anyone has a solution to this problem?

Is this related to the Surface SDK? Do I need Surface hardware to reproduce this?

Yes, it's related to the Surface SDK.

No, you don't need to have Surface hardware.
You can use the Input Simulator (available in the Surface SDK) to reproduce it.

http://msdn.microsoft.com/en-us/library/ff727911.aspx

I need to know that is it possible to measure distance between camera position and mesh position?(for example camera position to center of mesh)

@behname263,

If you mean the center of the mesh, there has to be at least 2 ways to use the mesh center as origin and camera position in 3d in a simple trig function... as in this example...

Or are you talking about the nearest point/vertices to the camera?

This may help as well, not knowing the actual issue: Fitting view with perspective camera

I'm trying to visualize a mesh using Helix 3D, it works fine, the only problem i got is how to limite the HelixViewport3D camera zoom. In fact, sometimes my model disappear when i zoom in or out.

Before Zoom :


After Zoom


Any idea how can i solve that issue
Regards,

Have you tried PerspectiveCamera instead of Orthographic one?

Hello everyone,
i'm starting my project from the contour demo samples of this awesome tool, but i cannot figure out how to control the trackball (don't know if is right call it like this, i mean the cude with the face "L, B, U, R, S..") by code in a wpf application (so c#). i can't figure out if it's something about the camera (view1.SetView(...)). or the model (model1.transform(...))
can someone help me?
a little piece of code

   <ht:HelixViewport3D x:Name="view1" Camera="{ht:PerspectiveCamera 5.3,-12.3,3.3,-6.3,11,-6.6}" CameraChanged="view1_cameraChanged" ShowCameraInfo="True"  Margin="0,71,0,0">
        <ht:SunLight/>
        <ht:FileModelVisual3D x:Name="model1" Source="D:/MARCO/Onthebrain/WPF - 3D - Kinect/Contour sample di Helix/Contour_demo/Contour_demo/bin/Debug/Astronaut.3ds"/>
    </ht:HelixViewport3D>

inside a grid...
in the .cs file i want to simulate the "right mouse click + mouse movement" input, as in the example, but in code...
thanks!

I wonder if anyone could suggest an approach to drawing a funnel?

See the usage of MeshBuilder.AddSurfaceOfRevolution in the example Source\Examples\WPF\ExampleBrowser\Examples\BuildingDemo\SiloVisual3D.cs, I think a similar approach can be used to model a funnel.

Thank you very much. I have been using Helix for several months in an application that is designed for the residential construction market. I would rather not publish the results yet but if you would send me a direct email, I will share a number of screen shots with you. I am most grateful for your work and "brag" about both Caliburn Micro and Helix (which are both in the same class of excellence) at each of the Microsoft meetings that I attend.

Bob

Hello objo,

Thank you for your suggestion, I should not have much trouble creating a FunnelVisual3D. But I have hit a real snag. I work in VB rather than C# so I need to write my own version of theSiloVisual3D. However, I don't understand the lambda contained in the Dependency property, shown below.

public static readonly DependencyProperty DiameterProperty =
      DependencyPropertyEx.Register<double, SiloVisual3D>("Diameter", 40, (s, e) => s.AppearanceChanged());

My version for VB will look about like this: (However the lambda is not quite right)

Public Shared ReadOnly DiameterProperty As DependencyProperty =
     DependencyPropertyEx.Register(Of Double, SiloVisual3D)("Diameter", 40, Function(s, e) s.AppearanceChanged())

I'm not asking for you to fix my code, but rather to help me understand the C# version, so that I can fix the VB version myself.

Once I master SiloVisual3D (in VB) I fully expect to create an entire library of specialized visuals for my needs, so getting past this snag is kind of important for me.
Now that I see this example from Building Demo, the funnel shape should not be to hard.

Bob

Sorry I don't know how to write the lambda in VB.
But you could change to standard dependency property registration with DependencyProperty.Register, see http://msdn.microsoft.com/en-us/library/ms750428(v=vs.110).aspx
Make sure you add the property changed calback to the metadata.

Bob,

Try:

Public Shared ReadOnly DiameterProperty As DependencyProperty =
     DependencyPropertyEx.Register(Of Double, SiloVisual3D)("Diameter", 40, Sub(s, e) s.AppearanceChanged())

(because the lambda is supposed to be a function returning "void" (in C# terms) and in VB, that's represented with a Sub() lambda instead of a Function() )

DOH!
Would you believe that I spent the better part of a day because I forgot that rule.
Thank you very much Rob

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

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;
        }

  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;