PrtEngine.ShadowRayIntersects Method

Language:

Uses efficient ray-tracing in precomputed radiance transfer (PRT) simulations to determine whether a ray intersects a mesh. Typically used to determine whether a given point is in shadow.

Definition

Visual Basic Public Function ShadowRayIntersects( _
    ByVal rayPosition As Vector3, _
    ByVal rayDirection As Vector3 _
) As Boolean

C# public bool ShadowRayIntersects(
    Vector3 rayPosition,
    Vector3 rayDirection
);

C++ public:
bool ShadowRayIntersects(
    Vector3 rayPosition,
    Vector3 rayDirection
);

JScript public function ShadowRayIntersects(
    rayPosition : Vector3,
    rayDirection : Vector3
) : boolean;

Visual Basic	Public Function ShadowRayIntersects( _ ByVal rayPosition As Vector3, _ ByVal rayDirection As Vector3 _ ) As Boolean
C#	public bool ShadowRayIntersects( Vector3 rayPosition, Vector3 rayDirection );
C++	public: bool ShadowRayIntersects( Vector3 rayPosition, Vector3 rayDirection );
JScript	public function ShadowRayIntersects( rayPosition : Vector3, rayDirection : Vector3 ) : boolean;

Parameters

rayPosition Microsoft.DirectX.Vector3
A Vector3 structure that specifies the point where the ray begins.

rayDirection Microsoft.DirectX.Vector3
A Vector3 structure that specifies the direction of the ray.

Return Value

System.Boolean
true if the ray intersects the current mesh, or false if it does not.

Remarks

Use SetMinMaxIntersection to set minimum and maximum distances of intersection with the ray.

This method executes faster than ClosestRayIntersects.

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rayPosition	Microsoft.DirectX.Vector3 A Vector3 structure that specifies the point where the ray begins.
rayDirection	Microsoft.DirectX.Vector3 A Vector3 structure that specifies the direction of the ray.