mesta wrote at 2013-11-19 12:54:

/// <summary>
        /// Identifies the <see cref="Items"/> dependency property.
        /// </summary>
        public static readonly DependencyProperty ItemsProperty = DependencyProperty.Register(
            "Items",
            typeof(List<BillboardTextItem>),
            typeof(BillboardTextGroupVisual3D),
            new UIPropertyMetadata(null, VisualChanged));

 /// <summary>
        /// Gets or sets the items.
        /// </summary>
        /// <value>The items.</value>
        public List<BillboardTextItem> Items
        {
            get
            {
                return (List<BillboardTextItem>)this.GetValue(ItemsProperty);
            }

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

objo wrote at 2013-11-19 13:31:

mesta wrote at 2013-11-19 13:45:

public static readonly DependencyProperty ItemsProperty = DependencyProperty.Register("Items", typeof(IList<BillboardTextItem>), typeof(BillboardTextGroupVisual3D), new UIPropertyMetadata(null, new PropertyChangedCallback(BillboardTextGroupVisual3D.VisualChanged)));

objo wrote at 2013-11-19 18:45:

chadsixt wrote at 2014-04-17 18:24:

objo wrote at 2014-04-29 10:20:

przem321 wrote at 2012-01-26 19:32:

Hi Objo,

here are some issues I would like to mention:

• PointsVisual3D will not work if Points is set to null. While this is not a bug, I like to disable the visual without removing it from the Viewport.Childern by setting Poins=null. I know, there is the IsRendering prop, but it serves a different purpose. Would it not make sense to add a line like 

	if (Points == null) return; 

to the 

	protected override void UpdateGeometry() function? 

The same applies to all ScreenSpaceVisual3D classes?

• Shouldn't the MeshNormals3D class be called MeshNormalsVisual3D for sake of consistency? 
• The BoundingBoxVisual3D has a hard-coded color to Yellow - well, not the perfect solution. I added a Property "Fill" to it, there one can set the color. I submit the file as a patch. 

objo wrote at 2012-01-26 20:09:

thanks for reporting bugs/inconsistencies! I'm correcting all three now.

objo wrote at 2012-01-26 20:13:

I used the property name "Color" instead of "Fill" (which should be of type Brush).

objo wrote at 2012-01-26 21:13:

After one more thought I changed again to "Fill" as you suggested, to be consistent with the other objects in the library.

jacobya wrote at 2012-01-23 06:00:

Hi objo,

I have a question regarding controlling the camera position and the direction the camera is looking.  What I'm essentially trying to do is to move the camera to a specific position (i.e. new Point3D(0, 100, 100)) and have the camera look at position 0, 0, 0.  The code I am using is this:

This doesn't seem to have the expected behavior.  After I move the camera around in the Viewport and change the Rotation etc..., executing the following code seems to move the camera and then puts it back where it was before the code was executed.  Any idea what I'm doing wrong?  I noticed there is a LookAt overload that takes a Vector3D as the second argument, but I'm not sure what should be passed here.

Thanks,

Jason

objo wrote at 2012-01-26 20:02:

hi Jason, the LookAt method you are using should keep the LookDirection unchanged and is changing the Position of the camera. There is an overload that also takes a LookDirection as an argument:

public static void LookAt(ProjectionCamera camera, Point3D target, Vector3D newLookDirection, double animationTime)

Also note that it should be possible to write

Viewport.Camera.Position = new Point3D(0,100,100);

(not using CameraController). 

przem321 wrote at 2012-01-14 07:12:

Hi,

I just needed the RotatonManipulator and figured out that there is no property to provide a pivot (= center of the rotation). It might appear as it is not necessary, but the current manipulator only rotates an object around its center if the geometry is centered around the origin. If the objects geometry is shifted (i.e. the actual vertex positions are such that the object does not center around the origin) than the object does not rotate around its center, but around its actual local origin. This point can now be set with the Pivot property. Note in most cases the geometry is centered properly such that it can be left at (0,0,0). A good test case is a box with its min corner at (0,0,0) and max at (1,1,1).

I added the prop to the abstract Manipulator class and changed the rotation call (OnMouseMove in the RotationManipulator class). I also provided these props to the CombinedManipulater class. Further I added a Bind and UnBind method for easy in-code-binding, since someone was asking how does it work:

    /// <summary>
    /// Binds this manipulator to a given Visual3D.
    /// </summary>
    /// <param name="source">Source Visual3D which receives the manipulator transforms.</param>
    public virtual void Bind(ModelVisual3D source)
    {
        BindingOperations.SetBinding(this, CombinedManipulator.TargetTransformProperty, new Binding("Transform") { Source = source });
        BindingOperations.SetBinding(this, CombinedManipulator.TransformProperty, new Binding("Transform") { Source = source });
    }

    /// <summary>
    /// Releases the binding of this manipulator.
    /// </summary>
    public virtual void UnBind()
    {
        BindingOperations.ClearBinding(this, CombinedManipulator.TargetTransformProperty);
        BindingOperations.ClearBinding(this, CombinedManipulator.TransformProperty);
    }

I will sent you the patch, maybe you want to integrate it. Cheers. P.

objo wrote at 2012-01-16 07:16:

Great! I submitted these changes. Should also add an example in the ManipulatorDemo...

cobra18t wrote at 2011-12-20 17:02:

I have the field of view of a perspective camera bound to a int variable in the code behind. Right now, it will not update the field of view until I "flick" the mouse with the right mouse button. Just rotating around will not cause the update. Is there something, perhaps a function that I can call, to force the camera FOV to update automatically?

objo wrote at 2011-12-21 21:36:

Sorry, I don't understand the problem here.

Here is an example binding the FieldOfView property of a PerspectiveCamera to a Slider

<Grid>
	<helix:HelixViewport3D>
        	<helix:DefaultLights/>
                <helix:CubeVisual3D SideLength="4" Fill="Blue"/>
                <helix:HelixViewport3D.Camera>
                	<PerspectiveCamera FieldOfView="{Binding Value, ElementName=FieldOfViewSlider}"/>
                </helix:HelixViewport3D.Camera>
        </helix:HelixViewport3D>
        <StackPanel HorizontalAlignment="Left" VerticalAlignment="Top" Margin="8">
                <Slider Name="FieldOfViewSlider" Value="45" Minimum="10" Maximum="160" Width="200"/>
        </StackPanel>
</Grid>

cobra18t wrote at 2011-12-21 21:45:

Let me see if I can clarify...I am an idiot and forgot to raise a propertychanged event. It works just fine now.

ezolotko wrote at 2013-08-02 04:28:

            Camera = new OrthographicCamera
            {
                LookDirection = new Vector3D(-398.987, -42.626, -19.482),
                UpDirection = new Vector3D(-0.049, -0.001, 0.999),
                Position = new Point3D(398.987, 42.626, 19.482),
                Width = 235,
            };

ezolotko wrote at 2013-08-05 03:03:

ezolotko wrote at 2013-08-06 04:03:

Mrme wrote at 2013-08-06 10:09:

ezolotko wrote at 2013-08-06 10:17:

ShadesJeff wrote at 2013-09-24 23:02:

objo wrote at 2013-09-25 08:59:

objo wrote at 2013-09-26 22:40:

ShadesJeff wrote at 2013-09-26 22:47:

objo wrote at 2013-09-27 11:12:

rinaldin wrote at 2013-10-03 22:14:

rinaldin wrote at 2013-10-25 22:27:

var newRelativePosition = relativePosition * (1 + delta);

var newRelativePosition = relativePosition * (1.1 + delta);

wangzh wrote at 2014-07-24 04:56:

var newRelativePosition = relativePosition * (1 + delta); 

rinaldin wrote at 2014-07-24 19:46:

wangzh wrote at 2014-07-25 02:42:

 var newRelativePosition = relativePosition * (1 + delta);
 var newRelativeTarget = relativeTarget * (1 + delta);

 var f = Math.Pow(2.5, delta);
 var newRelativePosition = relativePosition * f;
 var newRelativeTarget = relativeTarget * f;

wangzh wrote at 2014-07-25 15:49:

 public MainWindow()
        {
            InitializeComponent();
            resetZoom();
         }

private void resetZoom()
        {
            OrthographicCamera myOCamera = new OrthographicCamera(new Point3D(0, 0, 0), new Vector3D(100000, 100000, -100000), new Vector3D(0, 0, 1), 5000);
            ViewPort.Camera = myOCamera;
            
        }

double z1 = 0;
double h = 500;
        private void cylinder_Click(object sender, RoutedEventArgs e)
        {
            PipeVisual3D pipe = new PipeVisual3D();
            pipe.Point1 = new Point3D(0, 0, z1);
            pipe.Point2 = new Point3D(0, 0, z1+h);
            pipe.Material = Materials.LightGray;
            pipe.Diameter = 1200;
            pipe.InnerDiameter = 1180;
            z1 += h;
            SolidModels.Children.Add(pipe);
            ViewPort.ZoomExtents();
        }

esi wrote at 2013-10-18 15:30:

musicxpg wrote at 2013-03-20 04:35:

JohnSourcer wrote at 2012-12-10 12:50:

Hi All,

I've created a HelixViewport3D which contains a SphereVisual3D. I'm trying to capture manipulation events on it. Does anybody know if this is supported?

HV3D.ZoomExtentsWhenLoaded = true;
HV3D.Viewport.IsManipulationEnabled = true;
HV3D.Viewport.ManipulationStarting += Viewport_ManipulationStarting;

JohnSourcer wrote at 2012-12-10 13:32:

Apols, this has something to do with it being in a Scatterview.

nsousa wrote at 2013-04-04 18:47:

objo wrote at 2013-04-15 12:47:

nsousa wrote at 2013-04-15 12:54: