public static void SetCameraView(HelixViewport3D viewPort, eCameraViews view, double animationTime)
{
Vector3D faceNormal = GetNormal(view);
Vector3D faceUp = GetUpVector(view);
Vector3D lookDirection = -faceNormal;
Vector3D upDirection = faceUp;
lookDirection.Normalize();
upDirection.Normalize();
ProjectionCamera camera = viewPort.Camera as ProjectionCamera;
if (camera != null)
{
var target = camera.Position + camera.LookDirection;
double distance = camera.LookDirection.Length;
lookDirection *= distance;
var newPosition = target - lookDirection;
viewPort.SetView(newPosition, lookDirection, upDirection, animationTime);
}
}
private static Vector3D GetUpVector(eCameraViews view)
{
switch (view)
{
case eCameraViews.Top: return(CameraViews.StandardViews.UpVectors.Top);
case eCameraViews.Bottom: return(CameraViews.StandardViews.UpVectors.Bottom);
case eCameraViews.Left: return(CameraViews.StandardViews.UpVectors.Left);
case eCameraViews.Right: return(CameraViews.StandardViews.UpVectors.Right);
case eCameraViews.Isometric_PPP: return(CameraViews.IsometricViews.UpVectors.PPP);
case eCameraViews.Isometric_MPP: return(CameraViews.IsometricViews.UpVectors.MPP);
case eCameraViews.Isometric_PMP: return(CameraViews.IsometricViews.UpVectors.PMP);
case eCameraViews.Isometric_MMP: return(CameraViews.IsometricViews.UpVectors.MMP);
default:
throw new NotSupportedException();
}
}
