Name:  ChairPlot 2D Txt - Chair Plot using 2D texture map mode 

Type:  mapper, C

Input: field 3D uniform byte

Output: geometry

Parameters:
  X   integer  cut-point of chair slice
  Y   integer  cut-point of chair slice
  Z   integer  cut-point of chair slice
  Draw_Sides   boolean   interior only or all

Description:
  The  ChairPlot module is another alternative way of visualizing
  3D volume data. The volume is displayed with 3 orthogonal
  slice planes, with the exterior boundary filled in behind,
  so it looks like a section has been removed from a corner of the
  volume. It is similar to excavate brick, except that it
  makes 2D polygons, with UV texture coordinates and resamples
  the input data into 2D images that glue onto the slice sections.
  This way, 2D texture map facilities are used, rather than 3D texture.
  Several hardware vendors, notably E&S, SGI, Kubota, Vistra, etc.,
  have hardware support for this type of texture mapping.
  The software renderer also has support for this mode, where no
  accelerator is available.
  The controls are virtually identical to excavate brick.