Hello,

I am trying to change the axis color on the CoordinateSystemVisual3d, but I can only get the black or the default (green, red, blue colors).

            <helix:CoordinateSystemVisual3D x:Name="Cord" ArrowLengths="10">
                <helix:CoordinateSystemVisual3D.XAxisColor>
                    <Color R="152" B="152" G="152"/>
                </helix:CoordinateSystemVisual3D.XAxisColor>
                <helix:CoordinateSystemVisual3D.YAxisColor>
                    <Color R="30" B="187" G="238"/>
                </helix:CoordinateSystemVisual3D.YAxisColor>
                <helix:CoordinateSystemVisual3D.ZAxisColor>
                    <Color R="68" B="35" G="80"/>
                </helix:CoordinateSystemVisual3D.ZAxisColor>
            </helix:CoordinateSystemVisual3D>

Thanks for any help,
John

I was wondering if there is a better way to do this :

            ObjReader CurrentHelixObjReader = new ObjReader();
            neutral = CurrentHelixObjReader.Read("C:/Users/Roger/Desktop/cutie1/cutie.obj");

            ObjReader CurrentHelixObjReader2 = new ObjReader();
            anger = CurrentHelixObjReader2.Read("C:/Users/Roger/Desktop/cutie1/cutie_ExpressionAnger.obj");

            ObjReader CurrentHelixObjReader3 = new ObjReader();
            smile = CurrentHelixObjReader3.Read("C:/Users/Roger/Desktop/cutie1/cutie_ExpressionSmileOpen.obj");

            ObjReader CurrentHelixObjReader4 = new ObjReader();
            blink = CurrentHelixObjReader4.Read("C:/Users/Roger/Desktop/cutie1/cutie_ModifierBlinkLeft.obj");

So you can see I am loading 4 models.

I was thinking I could do this, but the individual models do not load, I think it's just loading the first one four times but I am not sure.

            ObjReader CurrentHelixObjReader = new ObjReader();
            neutral = CurrentHelixObjReader.Read("C:/Users/Roger/Desktop/cutie1/cutie.obj");
            anger = CurrentHelixObjReader.Read("C:/Users/Roger/Desktop/cutie1/cutie_ExpressionAnger.obj");
            smile = CurrentHelixObjReader.Read("C:/Users/Roger/Desktop/cutie1/cutie_ExpressionSmileOpen.obj");
            blink = CurrentHelixObjReader.Read("C:/Users/Roger/Desktop/cutie1/cutie_ModifierBlinkLeft.obj");

Still stuck on this, anyone have any ideas ?

The first code is correct, but I am considering adding an issue on refactoring the importers so it looks more like the second version. The exporters were recently refactored so they could be reused.

It snaps to the closes 90° increment and then rotates 90° on each single click. The rotation would be nicer with arrows outside the cube. Not nice enough for a pull request, still useful imo.

        private void FaceMouseLeftButtonDown(object sender, MouseButtonEventArgs e)
        {
            if (!this.IsEnabled)
            {
                return;
            }

            var faceNormal = this.faceNormals[sender];
            var faceUp = this.faceUpVectors[sender];

            var lookDirection = -faceNormal;
            var upDirection = faceUp;
            lookDirection.Normalize();
            upDirection.Normalize();

            // Double-click reverses the look direction
            if (e.ClickCount == 2)
            {
                lookDirection *= -1;
                if (upDirection != this.ModelUpDirection)
                {
                    upDirection *= -1;
                }
            }

            if (this.Viewport != null)
            {
                var camera = this.Viewport.Camera as ProjectionCamera;
                if (camera != null)
                {
                    var target = camera.Position + camera.LookDirection;
                    double distance = camera.LookDirection.Length;
                    lookDirection *= distance;
                    var newPosition = target - lookDirection;
                    Vector3D crossProduct = Vector3D.CrossProduct(upDirection, lookDirection);
                    var vector3Ds = new[] { upDirection, -1*upDirection, crossProduct, -1*crossProduct };
                    double dp = 95;
                    foreach (var v in vector3Ds)
                    {
                        double tdp =Vector3D.AngleBetween(camera.UpDirection, v);
                        if (tdp < dp)
                        {
                            dp = tdp;
                            upDirection = v;
                        }
                    }
                    if (Vector3D.AngleBetween(upDirection, camera.UpDirection)  < 0.1)
                    {
                        var rot = new RotateTransform3D(new AxisAngleRotation3D(
                                  lookDirection, 90));
                        upDirection = rot.Transform(upDirection);
                    }
                    CameraHelper.AnimateTo(camera, newPosition, lookDirection, upDirection, 500);
                }
            }

            e.Handled = true;
            this.OnClicked(lookDirection, upDirection);
        }

thanks for sharing your code - I will have a look at this when I get time :)

I was wondering, by using the sharpdx fork of helix toolkit, would the transparency be treated as they should be in 3D??

Case:
There are two semi-transparent planes cutting each other in the scene. This case can't be handled in WPF3D due the fact the models are not depth sorted. Even with the depth sorting, as the planes are cutting each other so one plane will partially hide the other.

Using sharpdx fork, would this case be handled as it is in WPF3D(one plane partially hiding other) or would this case be handled properly (both planes are partially visible from every angle)

I know improved transparency methods are planned on the sharpdx fork, but it is not there yet.

Hi,

don't know if anyone has experienced this:

I try to put HelixViewport3D in a user control like this

    <Grid HorizontalAlignment="Stretch" VerticalAlignment="Stretch">
        <h:HelixViewport3D ZoomExtentsWhenLoaded="True"
            x:Name="HelixViewport"
            Width="{Binding ActualWidth, ElementName=Container, Mode=OneWay}" 
            Height="{Binding Height, ElementName=Container, Mode=OneWay}">
            <h:SunLight />
        </h:HelixViewport3D>
    </Grid>

and in my Shell.xaml, I have this

<ContentControl cal:RegionManager.RegionName="MainCanvasRegion" Width="auto" Height="auto" />

Next, I use Prism to load the UserControl to the region like this

            _regionManager.RegisterViewWithRegion(Constants.RegionNames.MainCanvasRegion,
                                                  () => _container.Resolve<HelixCanvasView>());

the user control is placed to the ContentControl, but the user control has nothing in it.

I use Snoop to check. In the visual tree, the HelixCanvasView is in the tree, but underneather, it has nothing. Everything is gone. Very strange.

The way I am using Prism is correct. The shell has other regions, and other user controls are loaded properly. It's only this user control with HelixViewport3D. Well, technically, the control is loaded, but the HelixViewport3D is kicked out.

Does anyone know why?


Thanks

ok, I found out the problem of this issue. It's not really related to Helix control.

It feels more like a Microsoft bug.

For testing purpose, I was using a static resource of array for the items source, but as long as it's there, it kicks out the InitializeComponent method. So my user control becomes blank.

It's very strange, because the same way of defining the static resource works fine in Windows-level. The problem is only in the User Control level. and I can't find any reason or solution to it.

Hi,

I am doing quite well with my modelling. Got a little stuck though. Does HELIX allow for the use of transparent PNGs as a texture ?

I'm trying to get my human model's eyelashes to show up but they don't. I know I am locating the image okay because when I try to load a jpg in there it appears where the eyelashes should be.

The original texture for the eyelashes used alpha channel, but I don't think we can do that with HELIX at this time.

So, I used created a PNG of them instead, but then nothing appears at all. Surely something should appear ?

This is how the material looks in the MTL file :

newmtl 6_Eyelash
d 1
Kd 1 1 1
map_Kd Maps/V5BreeLashes1.png

I also made sure that the eyelashes are loaded last, as I was reading that transparent objects need to come last. Not sure if that's appropriate for what I am doing though.

Any thoughts ?

I am so silly. I had two folders as I had to convert the alpha maps to PNG. Of course I forgot to transfer the eyelashes PNG to the working folder. So it was not finding it.

Shoot me now. All working once I had the ordering correct - transparencies need to come last !

Hello,

I have an application with Helix 3D Toolkit.
I am using seamless texture and I need to mapping textures (jpg) on the mesh in repeated mode (wrap mode).

mGeometries.Add(new GeometryModel3D(mesh, new DiffuseMaterial(imgBrush)));

for the imgBrush I need to have imgBrush with Wrap mode texture.

In the DirectX is enumerator TextureAddressMode.

http://msdn.microsoft.com/en-us/library/windows/desktop/bb206366(v=vs.85).aspx

How can I do this?

Many thanks
Jindrich

I think you can use the TileMode property of the ImageBrush!
http://msdn.microsoft.com/en-us/library/system.windows.media.tilebrush.tilemode(v=vs.110).aspx

I'm working with the SimpleDemo and getting stuck as I am new to C#.

I see this in the code :

        /// <summary>
        /// Gets or sets the model.
        /// </summary>
        /// <value>The model.</value>
        public Model3D Model { get; set; }

I assume this is going to load and get the current model in the scene ?

So how can I load a model from outside of the MainViewModel.cs ?

Hopefully I can explain where I am. I reduced the size of the HelixViewPort and added a slider and a text box. At this point I am just playing, but lets say I want the slider to trigger models. So when it is to the right it is one model and to the left a different model.

I have some code I came up with for the form :

namespace ExampleBrowser
{
    /// <summary>
    /// Interaction logic for MainWindow.xaml
    /// </summary>
    /// 

using System.Windows;
using System.Windows.Media;
using System.Windows.Media.Media3D;

using HelixToolkit.Wpf;

    public partial class MainWindow : Window
    {
        public static int foo;

        public MainWindow()
        {
            InitializeComponent();
            this.DataContext = new MainViewModel();
        }

        public void Slider_ValueChanged(object sender, RoutedPropertyChangedEventArgs<double> e)
        {

            ObjReader CurrentHelixObjReaderb = new ObjReader();
            Model3DGroup MyCube = CurrentHelixObjReaderb.Read("C:/Users/Roger/Desktop/cube/cube-long.obj");

            // And now what ?!


        }

        
    }
}

Here's an image of my form that may help :




I'm just stuck on loading the model into the viewer. I can do it in the MainViewModel.cs quite easily

ObjReader CurrentHelixObjReaderb = new ObjReader();
            Model3DGroup MyEnd = CurrentHelixObjReaderb.Read("C:/Users/Roger/Desktop/cube/cube-long.obj");

            this.Model = MyEnd;

But due to C# being new to me I don't know how to do it elsewhere, like make it global or something.

Many thanks for any help :)

Please delete this thread if you see fit. I realise I was leading myself up a blind alley.

Hi,

First, thanks for your work with helixtoolkit!
I use it to create a 3D application to display model 3D in .stl

Now i want to try your fork HelixToolkit.SharpDX.Wpf_NET40, but it is impossible to run and try the example.

It writes "Error registering effect, unable to load d3dcompiler_43.dll"

Could you help me ?

Thanks

Cédric

I put d3dcompiler_43.dll in c:/windows/system32


and now i have

"Tentative de chargement d’un programme de format incorrect. (Exception de HRESULT : 0x8007000B)"

"Attempt to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)"

Any help would be fine ?


Cédric

If you have errors with missing DirectX dlls (e.g. d3dcompiler_42.dll is missing) try installing the DirectX 2010 End-Users Runtime from: http://www.microsoft.com/en-us/download/details.aspx?id=8109 That applies also to Windows 8/8.1 even if it comes with a DX SDK.

I am playing with Terrain Example

Currently the Source refers to a file to be uploaded using SurfacePlotVisual3D's

UpdateModel()

I am testing to use Helix3D as usercontrol through ElementHost in WinForm application

I am trying to figure out how to pass a new fileName string from WinForm so that I could define UpdateModel( FileName) and choose new file to load 3D data during run time.

Anyone know any example which I could study?
D.

Sorry, I don't know how to use it from winforms.