/* We know ppath != ppath_old. */
int
gx_path_copy_reversed(const gx_path *ppath_old, gx_path *ppath, int init)
{ const subpath *psub = ppath_old->first_subpath;
#ifdef DEBUG
if ( gs_debug['p'] )
gx_dump_path(ppath_old, "before reversepath");
#endif
if ( init )
gx_path_init(ppath, &ppath_old->memory_procs);
nsp: while ( psub )
{ const segment *pseg = psub->last;
const segment *prev;
int code = gx_path_add_point(ppath, pseg->pt.x, pseg->pt.y);
if ( code < 0 )
{ gx_path_release(ppath);
return code;
}
for ( ; ; pseg = prev )
{ prev = pseg->prev;
switch ( pseg->type )
{
case s_start:
/* Finished subpath */
if ( psub->closed )
code = gx_path_close_subpath(ppath);
psub = (const subpath *)psub->last->next;
goto nsp;
case s_curve:
{ const curve_segment *pc = (const curve_segment *)pseg;
code = gx_path_add_curve(ppath,
pc->p2.x, pc->p2.y,
pc->p1.x, pc->p1.y,
prev->pt.x, prev->pt.y);
break;
}
case s_line:
case s_line_close:
code = gx_path_add_line(ppath, prev->pt.x, prev->pt.y);
break;
}
if ( code )
{ gx_path_release(ppath);
return code;
}
}
/* not reached */
}
ppath->position = ppath_old->position; /* restore current point */
#ifdef DEBUG
if ( gs_debug['p'] )
gx_dump_path(ppath, "after reversepath");
#endif
return 0;
}
int
gs_newpath(gs_state *pgs)
{ gx_path_release(pgs->path);
gx_path_init(pgs->path, &pgs->memory_procs);
return 0;
}
