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/* Copyright (C) 1989, 1995, 1996, 1997, 1998, 1999 Aladdin Enterprises. All rights reserved.
This software is licensed to a single customer by Artifex Software Inc.
under the terms of a specific OEM agreement.
*/
/*$RCSfile$ $Revision$ */
/* Basic path operators */
#include "math_.h"
#include "ghost.h"
#include "oper.h"
#include "igstate.h"
#include "gsmatrix.h"
#include "gspath.h"
#include "store.h"
/* Forward references */
private int common_to(P2(i_ctx_t *,
int (*)(P3(gs_state *, floatp, floatp))));
private int common_curve(P2(i_ctx_t *,
int (*)(P7(gs_state *, floatp, floatp, floatp, floatp, floatp, floatp))));
/* - newpath - */
private int
znewpath(i_ctx_t *i_ctx_p)
{
return gs_newpath(igs);
}
/* - currentpoint <x> <y> */
private int
zcurrentpoint(i_ctx_t *i_ctx_p)
{
os_ptr op = osp;
gs_point pt;
int code = gs_currentpoint(igs, &pt);
if (code < 0)
return code;
push(2);
make_real(op - 1, pt.x);
make_real(op, pt.y);
return 0;
}
/* <x> <y> moveto - */
int
zmoveto(i_ctx_t *i_ctx_p)
{
return common_to(i_ctx_p, gs_moveto);
}
/* <dx> <dy> rmoveto - */
int
zrmoveto(i_ctx_t *i_ctx_p)
{
return common_to(i_ctx_p, gs_rmoveto);
}
/* <x> <y> lineto - */
int
zlineto(i_ctx_t *i_ctx_p)
{
return common_to(i_ctx_p, gs_lineto);
}
/* <dx> <dy> rlineto - */
int
zrlineto(i_ctx_t *i_ctx_p)
{
return common_to(i_ctx_p, gs_rlineto);
}
/* Common code for [r](move/line)to */
private int
common_to(i_ctx_t *i_ctx_p,
int (*add_proc)(P3(gs_state *, floatp, floatp)))
{
os_ptr op = osp;
double opxy[2];
int code;
if ((code = num_params(op, 2, opxy)) < 0 ||
(code = (*add_proc)(igs, opxy[0], opxy[1])) < 0
)
return code;
pop(2);
return 0;
}
/* <x1> <y1> <x2> <y2> <x3> <y3> curveto - */
int
zcurveto(i_ctx_t *i_ctx_p)
{
return common_curve(i_ctx_p, gs_curveto);
}
/* <dx1> <dy1> <dx2> <dy2> <dx3> <dy3> rcurveto - */
int
zrcurveto(i_ctx_t *i_ctx_p)
{
return common_curve(i_ctx_p, gs_rcurveto);
}
/* Common code for [r]curveto */
private int
common_curve(i_ctx_t *i_ctx_p,
int (*add_proc)(P7(gs_state *, floatp, floatp, floatp, floatp, floatp, floatp)))
{
os_ptr op = osp;
double opxy[6];
int code;
if ((code = num_params(op, 6, opxy)) < 0)
return code;
code = (*add_proc)(igs, opxy[0], opxy[1], opxy[2], opxy[3], opxy[4], opxy[5]);
if (code >= 0)
pop(6);
return code;
}
/* - closepath - */
int
zclosepath(i_ctx_t *i_ctx_p)
{
return gs_closepath(igs);
}
/* - initclip - */
private int
zinitclip(i_ctx_t *i_ctx_p)
{
return gs_initclip(igs);
}
/* - clip - */
private int
zclip(i_ctx_t *i_ctx_p)
{
return gs_clip(igs);
}
/* - eoclip - */
private int
zeoclip(i_ctx_t *i_ctx_p)
{
return gs_eoclip(igs);
}
/* ------ Initialization procedure ------ */
const op_def zpath_op_defs[] =
{
{"0clip", zclip},
{"0closepath", zclosepath},
{"0currentpoint", zcurrentpoint},
{"6curveto", zcurveto},
{"0eoclip", zeoclip},
{"0initclip", zinitclip},
{"2lineto", zlineto},
{"2moveto", zmoveto},
{"0newpath", znewpath},
{"6rcurveto", zrcurveto},
{"2rlineto", zrlineto},
{"2rmoveto", zrmoveto},
op_def_end(0)
};
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