class TTeXDump: public TVirtualPS

 Default TeX constructor

 Initialize the TeX interface

  fname : TeX file name
  wtype : TeX workstation type. Not used in the TeX driver. But as TTeXDump
          inherits from TVirtualPS it should be kept. Anyway it is not
          necessary to specify this parameter at creation time because it
          has a default value (which is ignore in the TeX case).

 Open a TeX file

 Default TeX destructor

 Close a TeX file

 Activate an already open TeX file

 Deactivate an already open TeX file

 Draw a Box

 Draw a Frame around a box

 mode = -1  the box looks as it is behind the screen
 mode =  1  the box looks as it is in front of the screen
 border is the border size in already pre-computed TeX units dark is the
 color for the dark part of the frame light is the color for the light
 part of the frame

 Draw a PolyLine

  Draw a polyline through  the points  xy.
  If NN=1 moves only to point x,y.
  If NN=0 the x,y are  written in the TeX file
     according to the current transformation.
  If NN>0 the line is clipped as a line.
  If NN<0 the line is clipped as a fill area.

 Draw a PolyLine in NDC space

  Draw a polyline through  the points  xy.
  If NN=1 moves only to point x,y.
  If NN=0 the x,y are  written in the TeX file
     according to the current transformation.
  If NN>0 the line is clipped as a line.
  If NN<0 the line is clipped as a fill area.

 Paint PolyMarker

 Paint PolyMarker

 This function defines a path with xw and yw and draw it according the
 value of nn:

  If nn>0 a line is drawn.
  If nn<0 a closed polygon is drawn.

 Start the TeX page. This function starts the tikzpicture environment

 Set the range for the paper in centimetres

 Set color index for fill areas

 Set color index for lines

 Change the line style

 linestyle = 2 dashed
           = 3 dotted
           = 4 dash-dotted
           = else solid (1 in is used most of the time)

 Set the lines width.

 Set size for markers.

 Set color index for markers.

 Set color with its color index

 Set color with its R G B components

  r: % of red in [0,1]
  g: % of green in [0,1]
  b: % of blue in [0,1]

 Set color index for text

 Draw text

 xx: x position of the text
 yy: y position of the text
 chars: text to be drawn

 Write a string of characters in NDC

 Convert U from NDC coordinate to TeX

 Convert V from NDC coordinate to TeX

 Convert X from world coordinate to TeX

 Convert Y from world coordinate to TeX

 Begin the Cell Array painting

 Paint the Cell Array

 End the Cell Array painting

 Not needed in TeX case

 add additional pgfplotmarks