How Do I Move A 3D Camera With Buttons (Helix Viewport)

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Hi there, i am trying to move my 3Dcamera with buttons on a single touch display.
For that i added a perspective camera to the helix viewport and bind its properties.

XML

<h:HelixViewport3D.Camera>
                <PerspectiveCamera
                LookDirection="{Binding PerspectiveCamera.LookDirection, UpdateSourceTrigger=PropertyChanged, Mode=TwoWay}"
                Position="{Binding PerspectiveCamera.Position,  UpdateSourceTrigger=PropertyChanged,Mode=TwoWay}"
                UpDirection="{Binding PerspectiveCamera.UpDirection,  UpdateSourceTrigger=PropertyChanged,Mode=TwoWay}"
                />
            </h:HelixViewport3D.Camera>

In the code behind i change these properties like that:

C#

this.PerspectiveCamera.Position = new Point3D(PerspectiveCamera.Position.X, PerspectiveCamera.Position.Y, perspectiveCamera.Position.Z - 50);

My question is, if it is possible to use an animation or the camera controller to change the properties of the camera.

Thanks for your help!

Posted 11-Dec-14 2:48am

3DC#

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This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Jan Bakker · Accepted Answer · 2014-12-14T23:03:00

If you want to use the keyboard, additional to the buttons,
Add the following to your HelixViewPort:

XML

IsMoveEnabled="False" IsPanEnabled="False" IsRotationEnabled="False"

On your button left click:
(repeat for the other buttons, lookdirection an updirection)

C#

PerspectiveCamera cam = ((PerspectiveCamera)h3d.DefaultCamera);
                h3d.Camera.AnimateTo(new Point3D()
                {
                    X = cam.Position.X - ViewPortScale * 2,
                    Y = cam.Position.Y,
                    Z = cam.Position.Z
                },
                   cam.LookDirection,
                   cam.UpDirection,
                1000);

You need some kind of scale for your model.
(How much does the camera have to move)
Try experimenting with this.

C#

double ViewPortScale = GetViewPortScale(Visual3DHelper.FindBounds(myModelVisual3D, Transform3D.Identity));

C#

private double GetViewPortScale(Rect3D bounds)
        {
            //calculate contour diameter
            double biggestSize = 0;
            if (bounds.SizeX > biggestSize) biggestSize = bounds.SizeX;
            if (bounds.SizeY > biggestSize) biggestSize = bounds.SizeY;
            if (bounds.SizeZ > biggestSize) biggestSize = bounds.SizeZ;
            ViewPortScale = biggestSize / 100;
            return biggestSize / 100;
        }

C#

How Do I Move A 3D Camera With Buttons (Helix Viewport)

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How Do I Move A 3D Camera With Buttons (Helix Viewport)

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