NAME

       v_print2, v_print3, m_print2, m_print3, v_scan2, v_scan3,  v_inters2, v_dupl2, v_dupl3, m_dupl2,  m_dupl3
       - additional 3d graphics and associated matrix and vector routines

SYNOPSIS

       #include <graphadd.h>

       void      v_print2(hvec2_t vec, const char *name)

       void      v_print3(hvec3_t vec, const char *name)

       void      m_print2(hmat2_t mat, const char *name)

       void      m_print3(hmat3_t mat, const char *name)

       int v_scan2(hvec2_t &vec)

       int v_scan3(hvec3_t &vec)

       int v_inters2(
       const hvec2_t &p1, const hvec2_t &p2, const hvec2_t &q1,
       const hvec2_t &q2, hvec2_t *S1, hvec2_t *S2)

       void v_dupl2(hvec2_t *, hvec2_t *)

       void v_dupl3(hvec3_t *, hvec3_t *)

       void m_dupl2(hmat2_t *, hmat2_t *)

       void m_dupl3(hmat3_t *, hmat3_t *)

DESCRIPTION

       These routines ar an addition to grapmat(3). The *print routines print the appropriate  data  to  stderr.
       The  *scan  routines  read  from stdin.  The *dupl routines copy data. v_inters2 returns the intersection
       point of p1,p2 and q1,q2 in S1 and S2. The return value is 0 if no intersection  point  is  found,  1  if
       there is an intersection point, and two if the two lines do overlap. In that case, the two points are the
       extrema.

NAMES

       Naming conventions as in graphmat(3).

USAGE

       All the "functions" may have been implemented as macro's, so you can't take the address of a function. It
       is  however  guaranteed that arguments of each function/macro will be evaluated only once, except for the
       result argument, which can be evaluated multiple times.

SEE ALSO

       graphmat(3), graphmat++(3), Graphics and matrix routines.

NOTE

       Only available in C++ and ANSI C. v_inters2 only in C++.  Library  file  is  /usr/local/lib/libgraphmat.a
       and the C++ util files.

AUTHOR

       Herbert Hilhorst
       Klamer Schutte

                                                9 September 1992                                     GRAPHADD(3)