Name: "ace_to_ucd" Ace to UCD - Example Coroutine with UCD output port 

Author: Ian Curington, AVS Inc., UK 

Type: data_input, coroutine

Language: C

Inputs:      none

Outputs:     ucd structure

Parameters:  none


Description:

  This is intended as a source code example to show how to allocate
  and manage a simple UCD output port structure, from within a
  free-running AVS coroutine.
  This simulates time varying data on a 2D quadrilateral mesh.
  It has no parameters or input ports, for simplicity all values
  are hand-coded.
  The UCD output structure contains a 2D mesh of quadrilateral cells,
  with connected shared nodes. The geometric and connectivity info
  is only built the first time, then only the values change
  from each time step.