Zoom out

Nov 23, 2012 at 10:40 PM
Edited Nov 23, 2012 at 10:40 PM
I'm beginners and would need your help! I made a console application 
to save down a rendered image. BUT the camera is too close and
I can not somehow zoom out.






How do I solve this?
using System.IO;
using System.Threading;
using System.Windows;
using System.Windows.Media;
using System.Windows.Media.Media3D;
using System.Windows.Shapes;
using HelixToolkit.Wpf;

namespace ConsoleApplication1
{
    internal class Program
    {             
        public static IHelixViewport3D HelixView { get; set; }
        public static Model3D MyModel { get; set; }

        private static void Main(string[] args)
        {
            var thread = new Thread(Test);
            thread.SetApartmentState(ApartmentState.STA);
            thread.Start();
            thread.Join();
        }

        private static void Test()
        {
            var c = new FileStream("Ferarri40.3ds", FileMode.Open, FileAccess.Read, FileShare.Read);
            var reader = new StudioReader {TexturePath = "."};
            MyModel = reader.Read(c);

            var m = new ModelVisual3D {Content = MyModel};

            const string Path = @"H:\test.png";
            const int Height = 480;
            const int Width = 640;

            var vp = new HelixViewport3D {Width = Width, Height = Height};

            vp.Viewport.Children.Add(m);

            vp.Children.Add(new DefaultLights());

            var zoom = new ScaleTransform3D(1.5, 1.5, 1.5);
            var t = new Transform3DGroup();
            t.Children.Add(zoom);
            vp.Camera.Transform = t;

            vp.Camera = CameraHelper.CreateDefaultCamera();
            vp.Camera.Position = new Point3D(5.300, -12.300, 3.300);
            vp.Camera.LookDirection = new Vector3D(-6.300, 11.000, -6.600);
            vp.Camera.UpDirection = new Vector3D(0.000, 0.000, 1.000);
            vp.Camera.NearPlaneDistance = 0.123;         

            var r = new Rectangle {Width = vp.ActualWidth, Height = vp.ActualHeight};
            var cb = new BitmapCacheBrush(vp) {BitmapCache = new BitmapCache(0)};
            r.Fill = cb;
            r.Arrange(new Rect(0, 0, r.Width, r.Height));
            r.UpdateLayout();            

            vp.Export(Path);
        }       
    }
}