BIGVIA(3)						  MBK PHYSICAL UTILITY FUNCTIONS						 BIGVIA(3)

NAME

       bigvia - draws a non minimal via as a bunch of vias

ORIGIN

       This  software  belongs	to  the  ALLIANCE CAD SYSTEM developed by the ASIM team at LIP6 laboratory of Universite Pierre et Marie CURIE, in
       Paris, France.

       Web : http://asim.lip6.fr/recherche/alliance/
       E-mail : alliance-users@asim.lip6.fr

SYNOPSYS

       #include "mph.h"
       void *bigvia(figure, viatype, x, y, dx, dy)
       phfig_list *figure;
       char viatype;
       long x, y, dx, dy;

PARAMETERS

       figure		   Pointer to the physical figure in the which vias must be put.

       viatype		   Contact type to be put.

       x, y		   Coordinate of the center of the bigvia.

       dx, dy		   Maximun rectangle to be filled with vias.

DESCRIPTION

       bigvia draws as many vias as necessary to fill the rectangle defined by its dx and dy arguments.  The ``bigvia'' center is  indicated  with
       dx  and dy, thus making this function much like addphvia.  The necessary segments are drawn to avoid having notches or other drc rules vio-
       lated.
       This function is tipically used by routers when connecting two non minimal wires, like supplies or clocks.
       The values for drawing the via correctly, ie avoid drc violations, are taken from the idps set of rules, and  are  not  changeable  at  run
       time.

ERRORS

	      "*** mbk error *** bigvia impossible : negative values dx, dy in figure figure at (x, y)"
       If either dx or dy are negative, the function complains and exits.

EXAMPLE

       #include "mph.h"
       #define BigVia(x, y, dx, dy) 
	  bigvia(WORK_PHFIG, CONT_VIA, x, y, dx, dy)

SEE ALSO

       mbk(1), addphvia(3), addphseg(3).

BUG REPORT

       This tool is under development at the ASIM department of the LIP6 laboratory.
       We need your feedback to improve documentation and tools.

ASIM
/LIP6							  October 1, 1997							 BIGVIA(3)