NAME
	draw arrow - create a 3-D arrow that can point to geometry objects

SUMMARY
	Name	draw arrow
	Author  Anonymous g69d
	Type	Input
	Inputs	NONE
	Outputs	geom - 	geom

	Parameters
	Name			Type	Default	Choices
	Make Arrow		oneshot
	Base Length		typein_real	 5.00	 0.00	100.00
	Arrowhead Length	typein_real	 1.00	 0.00	100.00
	Aspect Ratio		typein_real	 1.00	 0.00	10.00
	Bent Base		toggle		off	off	on
	Additional Base	Length	typein_real	 5.00	 0.00	100.00
	Bend Angle		typein_real	45.00 -179.99	179.99

DESCRIPTION
	This modules creates a 3 dimensional arrow for use in the geometry
  viewer.  The arrow  can then be moved and rotated so that it points at 
  a particular object or interesting data value.  The arrow can be straight,
  or it can have a bend in the shaft.  The arrow is created each time that
  the 'Make Arrow' button is pressed, removing any previous arrow in the
  process.  Therefore, to create two arrows, you must use two modules.

INPUTS

PARAMETERS

Make Arrow (oneshot) - This parameter is what generates the arrow.  If any 
  other parameters change, they will not affect the arrow until this button
  is pressed.

Base Length (typein_real) - The length of the arrow base from the bottom end 
  to the back of the arrowhead.  If the 'Bent Base' parameter is on, then 
  this is the distance from the bend to the back of the arrowhead.

Arrowhead Length (typein_real) - The length of the arrowhead.

Aspect Ratio (typein_real) - The width of the arrow divided by the length.
  A higher number creates a wider arrowhead (and a wider arrow base, since
  the base diameter is 1/3 the arrowhead diameter.)

Bent Base (toggle) - If this parameter is on, then the arrow will have a
  bend in its shaft.  The next two parameters will become visible, so that
  the bend can be described.

Additional Base Length (typein_real) - The length of the base from the bend
  in the shaft to the back end of the arrow.

Bend Angle (typein_real) - The angle of bend for the arrow.  A value of zero
  makes a straight arrow.   

OUTPUTS
	geom - geom

EXAMPLE NETWORKS

 	DRAW ARROW    READ GEOM
               |          |
               +----------+
               |
       GEOMETRY VIEWER

RELATED MODULES
      tube.

SEE ALSO