This module was tested on
HP, Kubota and Stellar machines.
NAME
	field_lines - field lines is a mapper module which
		      converts a 2D field in an object 
		      of lines and planes.
		      This module will create black lines (in optionally
		      i- or j-direction) with a 'no-lighting' plane
		      below it, so the field will look like a serie
		      of non-transparent graphs.

AUTHOR
       Rob Kuyper
       Section Heat Transfer
       Faculty of Applied Physics
       Univerity of Technology Delft
       The Netherlands

       E-mail: robk@duttwta.tn.tudelft.nl

SUMMARY
	Name	field_lines
	Type	Mapper
	Inputs	infield - 	field 2D scalar float REQUIRED

	Outputs	lines - 	geom
	        planes - 	geom

	Parameters
	Name		Type	Default	Choices
	i	radio_buttons	Choice List	Separator	Default
	j	radio_buttons	Choice List	Separator	Default
	mesh_height	dial	Float Min	Float Max	Float Default

DESCRIPTION
       The module uses a 2D scalar field to build a mesh.
       The mesh consists of lines, where the value in the field
       is used as the z-position of the vertex.
       Since the "lines" option in the geometry viewer
       creates a transparent object, lines in the
       back stay visible and the object does not look clear.
       In order to make lines in the back invisible, a plane is created
       below the created line.
	
       This way the object looks like a serie of graphs positioned
       next to each other.
       You can choose to make only graphs in the i=constant or the
       y=constant direction or both.
       In order to make the lines good visible, you might use
       'anti-alias' or a translation of the planes object in the z-direction.

       Since sometimes only the values in the j-direction are correlated,
       this is a very nice module to show the corresponding graphs
       in one picture.

INPUTS
	infield - field 2D scalar float

PARAMETERS

i (radio_buttons)

j (radio_buttons)

mesh_height (dial)

OUTPUTS
	lines - geom
	planes - geom

EXAMPLE NETWORKS
        field_lines.net

RELATED MODULES
        field to mesh

SEE ALSO