DisplayPipelineDrawArrowHead Method

public void DrawArrowHead(
	Point3d tip,
	Vector3d direction,
	Color color,
	double screenSize,
	double worldSize
)

Public Sub DrawArrowHead ( 
	tip As Point3d,
	direction As Vector3d,
	color As Color,
	screenSize As Double,
	worldSize As Double
)

Parameters

tip

Type: Rhino.GeometryPoint3d
Point of arrow head tip.

direction

Type: Rhino.GeometryVector3d
Direction in which arrow head is pointing.

color

Type: System.DrawingColor
Color of arrow head.

screenSize

Type: SystemDouble
If screenSize != 0.0, then the size (in screen pixels) of the arrow head will be equal to the screenSize.

worldSize

Type: SystemDouble
If worldSize != 0.0 and screen size == 0.0 the size of the arrow head will be equal to the number of units in worldSize.

Reference