public void SetRadius(
	float radius
)

Public Sub SetRadius ( 
	radius As Single
)

public:
void SetRadius(
	float radius
)

member SetRadius : 
        radius : float32 -> unit 

Parameters

radius

Type: SystemSingle

The radius is defined in pixels when defining a ray using the setPoint or setNormalizedPoint method, and is defined in world coordinates, when the ray is defined using the setRay method. By default, for the setPoint and setNormalizedPoint method the radius is 5 pixels.

For the setRay method, by default, the radius is not taken into account for triangle based shapes, only for points and lines. To enable this use the enableRadiusForTriangles method. When radius is taken into account, the ray is extended in 3D space. For perspectivecameras, the ray is extended to be a cone. For orthographic cameras, the ray is extended to be a cylinder.

Specifying a radius of 0 may give better performance. In particular, some shapes like MoMeshSkin and SoIndexedFaceSet implement a fast GPU picking algorithm that can only be used when radius is 0.

Reference