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RayHitTestParameters.Direction Proprietà

Definizione

Ottiene o imposta un Vector3D indica la direzione del raggio (dalla sua origine) lungo il quale viene eseguito un hit test.

public:
 property System::Windows::Media::Media3D::Vector3D Direction { System::Windows::Media::Media3D::Vector3D get(); };
public System.Windows.Media.Media3D.Vector3D Direction { get; }
member this.Direction : System.Windows.Media.Media3D.Vector3D
Public ReadOnly Property Direction As Vector3D

Valore della proprietà

Vector3D

Vector3D che indica la direzione del raggio lungo il quale viene eseguito un hit test.

Esempio

public void HitTest(object sender, System.Windows.Input.MouseButtonEventArgs args)
{
    Point mouseposition = args.GetPosition(myViewport);
    Point3D testpoint3D = new Point3D(mouseposition.X, mouseposition.Y, 0);
    Vector3D testdirection = new Vector3D(mouseposition.X, mouseposition.Y, 10);
    PointHitTestParameters pointparams = new PointHitTestParameters(mouseposition);
    RayHitTestParameters rayparams = new RayHitTestParameters(testpoint3D, testdirection);

    //test for a result in the Viewport3D
    VisualTreeHelper.HitTest(myViewport, null, HTResult, pointparams);
Public Sub HitTest(ByVal sender As Object, ByVal args As MouseButtonEventArgs)
    Dim mouseposition As Point = args.GetPosition(myViewport)
    Dim testpoint3D As New Point3D(mouseposition.X, mouseposition.Y, 0)
    Dim testdirection As New Vector3D(mouseposition.X, mouseposition.Y, 10)
    Dim pointparams As New PointHitTestParameters(mouseposition)
    Dim rayparams As New RayHitTestParameters(testpoint3D, testdirection)

    'test for a result in the Viewport3D
    VisualTreeHelper.HitTest(myViewport, Nothing, AddressOf HTResult, pointparams)

Commenti

Si noti che il livello visivo supporta l'hit testing su tutti gli oggetti in un punto o in una geometria, non solo nell'oggetto superiore. Un hit test 2D restituirà anche risultati 3D direttamente sotto il punto o la geometria specificati.

Si applica a

Vedi anche