Hi,

Im looking to take a snap shot of whats in the helix HelixViewport3D control by clicking a button. Has anyone done this before? Any advice appreciated!

Thanks!

something like this should do the work (helix is your HelixViewport3D):


Bitmap RenderBitmapAndSaveToFile(int width, string fileName)
{
double scale = width / helix.ActualWidth;

int height = (int)(helix.ActualHeight * scale);

RenderTargetBitmap bmp = new RenderTargetBitmap( width, height, 96 * scale, 96 * scale, PixelFormats.Pbgra32);

// draw the bitmap Background
Rectangle vRect = new Rectangle();
vRect.Width = bmp.Width;
vRect.Height = bmp.Height;
vRect.Fill = helix.Background;
vRect.Arrange(new Rect(0, 0, vRect.Width, vRect.Height));
bmp.Render(vRect);

bmp.Render(helix.Viewport);

PngBitmapEncoder aEncoder = new PngBitmapEncoder();
aEncoder.Frames.Add(BitmapFrame.Create(bmp));

Directory.CreateDirectory(System.IO.Path.GetDirectoryName(fileName));

using (Stream stm = File.Create(fileName))
{

aEncoder.Save(stm);

}
}

regads,
Joachim

I would like to have a context menu to pop up when I right click on an object.
Two questions:
1) does Helix have any functions to create menus?
2) right click seems to control the camera, is there a way to override that? or switch camera control to a combination of left and right click buttons together?

I don't know it Helix has GUI functions - although you could just pop a menu by the cursor using system API.
About how to control the camera, you can select which button (gesture) does what like this for example:

v3d.RotateGesture = new System.Windows.Input.MouseGesture(MouseAction.LeftClick);

where v3d is HelixViewport3D type.

1) Use a standard WPF ContextMenu
2) Yes, change the gesture as AnotherBor suggests

Thank you!

Hello everyone,
i know that this has been a solved issue, but i cannot get out of this mess.
I have tried all the possibilities that i found over internet, but i cannot figure out why some objects are loaded well and some others not. I tried three different ways...I post some code:

FileModelVisual3D Mymodel= new FileModelVisual3D();
Mymodel.source = MODELS[i]; //where MODELS[i] is a string with the path of the model, let's //say C:/fish.obj
view1.Children.Add(Mymodel);//where view1 is my helixviewport3d

so i try:

Model3DGroup modelGroup = ModelImporter.Load(MODELS[i]);
GeometryModel3D Mymodel = (GeometryModel3D)modelGroup.Children[0];
newVisual = new ModelVisual3D { Content = MyModel }; //or Content = modelGroup;
view1.Children.Add(newVisual);//where view1 is my helixviewport3d

then i try:

var reader = new StudioReader();
Model3D MyModel = reader.Read(path); //where path is the object path
newVisual = new ModelVisual3D { Content = MyModel };
view1.Children.Add(newVisual);//where view1 is my helixviewport3d

i tried also:

ObjReader reader2 = new ObjReader();
Model3DGroup modelGroup = reader2.Read(MODELS[i]);
GeometryModel3D _objRead = (GeometryModel3D)modelGroup.Children[0];
newVisual = new ModelVisual3D { Content = _objRead};
view1.Children.Add(newVisual);//where view1 is my helixviewport3d

and obviously i'have tried also the loading directly from xaml, without any significant results :(
also i tried what have been described here https://helixtoolkit.codeplex.com/discussions/354077, meaning the loading from stream, but without any success...

No one of this method is working for me :( i cannot see well all the models that i find both in the helix samples both on internet. The best result that i've obtained, till now, is with the use of the second method (create a ModelGroup3D and show it through the use of a ModelVisual3D, that will be the helixViewPort children...

Can someone told me what i'm doing wrong? Could someone give me a piece of code that is actually working? because i've searched over the internet and all i read is that everyone could get this fantastic tool to work but me :'(

have a nice day and thanks in advance...:)

Do you have lights in your scene? I think your code using ModelVisual3D looks ok.
I recommend setting a breakpoint on line 527 in StudioReader.cs, then you can check if the texture is loaded correctly!
Textures are not supported when loading from a stream.

Hi,

Instead of using the mouse to rotate around an object I want to use some buttons.

is it the AddRotateForce method I should use to do this where x and y would be the coordinate in world around the object?

Thanks
Seb

No, the arguments are relative to the screen coordinate system. See the usage by the arrow keys!

I have moved my project from helixtoolkit to helixtoolkit.wpf and found some difference with drag & drop behaviour. When dragging over HelixViewport3D and its children (i.e. some 3D models in it) I'm getting a lot of DragEnter/DragLeave events. Both events are connected to HelixViewport3D (new version) and HelixView3D (old version).

I am not aware of any changes related to drag/drop in the HelixViewport3D control.
Can you reproduce the behaviour in a small example?



        <h:HelixViewport3D x:Name="view1" CameraRotationMode="Turntable" IsHeadLightEnabled="True">
            
            <h:HelixViewport3D.Camera>
                <PerspectiveCamera Position="0, -200, 0"  LookDirection="0, 200, 0" FieldOfView="45" UpDirection="0,0,1">
                    <PerspectiveCamera.Transform>
                        <Transform3DGroup>
                            <TranslateTransform3D x:Name="cameraTranslateTransform3D"></TranslateTransform3D>
                        </Transform3DGroup>
                    </PerspectiveCamera.Transform>
                </PerspectiveCamera>
            </h:HelixViewport3D.Camera>
        </h:HelixViewport3D>

then some binding in code since my objects are runtime:

            Binding aBinding = new Binding("OffsetX");
            aBinding.Source = tryMe.outerCasePosition;
            BindingOperations.SetBinding(cameraTranslateTransform3D, TranslateTransform3D.OffsetXProperty, aBinding);

I don't find any documentation for "Hello World" demo application , many good comments but 0 documentation , how I start ?

Sorry, there is no "getting started" documentation yet. But there is a lot of examples, see the source code. Also, all properties and methods should be covered by XML comments.