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- /* Copyright (c) 1992 The Geometry Center; University of Minnesota
- 1300 South Second Street; Minneapolis, MN 55454, USA;
-
- This file is part of geomview/OOGL. geomview/OOGL is free software;
- you can redistribute it and/or modify it only under the terms given in
- the file COPYING, which you should have received along with this file.
- This and other related software may be obtained via anonymous ftp from
- geom.umn.edu; email: software@geom.umn.edu. */
-
- /* Authors: Charlie Gunn, Pat Hanrahan, Stuart Levy, Tamara Munzner, Mark Phillips */
-
- #include "stdio.h"
- #include "transform3.h"
-
- # define MAXSTACK 32
- static int maxstack = 0;
- static Transform3 stack[MAXSTACK];
-
- void
- Tm3Push( T )
- Transform3 T;
- {
- if( maxstack < MAXSTACK )
- Tm3Copy( T, stack[maxstack++] );
- else
- fprintf( stderr, "Stack Overflow at 32\n" );
- }
-
- void
- Tm3Pop( T )
- Transform3 T;
- {
- if( maxstack > 0 )
- Tm3Copy( stack[--maxstack], T );
- else
- fprintf( stderr, "Stack Underflow\n" );
- }
-
-