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/***********************************************************************/
/* */
/* Objective Caml */
/* */
/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
/* */
/* Copyright 1996 Institut National de Recherche en Informatique et */
/* en Automatique. All rights reserved. This file is distributed */
/* under the terms of the GNU Library General Public License, with */
/* the special exception on linking described in file ../../LICENSE. */
/* */
/***********************************************************************/
/* $Id: draw.c 6351 2004-05-30 14:11:41Z xleroy $ */
#include "libgraph.h"
#include <alloc.h>
value caml_gr_plot(value vx, value vy)
{
int x = Int_val(vx);
int y = Int_val(vy);
caml_gr_check_open();
if(caml_gr_remember_modeflag)
XDrawPoint(caml_gr_display, caml_gr_bstore.win, caml_gr_bstore.gc, x, Bcvt(y));
if(caml_gr_display_modeflag) {
XDrawPoint(caml_gr_display, caml_gr_window.win, caml_gr_window.gc, x, Wcvt(y));
XFlush(caml_gr_display);
}
return Val_unit;
}
value caml_gr_moveto(value vx, value vy)
{
caml_gr_x = Int_val(vx);
caml_gr_y = Int_val(vy);
return Val_unit;
}
value caml_gr_current_x(void)
{
return Val_int(caml_gr_x);
}
value caml_gr_current_y(void)
{
return Val_int(caml_gr_y);
}
value caml_gr_lineto(value vx, value vy)
{
int x = Int_val(vx);
int y = Int_val(vy);
caml_gr_check_open();
if(caml_gr_remember_modeflag)
XDrawLine(caml_gr_display, caml_gr_bstore.win, caml_gr_bstore.gc,
caml_gr_x, Bcvt(caml_gr_y), x, Bcvt(y));
if(caml_gr_display_modeflag) {
XDrawLine(caml_gr_display, caml_gr_window.win, caml_gr_window.gc,
caml_gr_x, Wcvt(caml_gr_y), x, Wcvt(y));
XFlush(caml_gr_display);
}
caml_gr_x = x;
caml_gr_y = y;
return Val_unit;
}
value caml_gr_draw_rect(value vx, value vy, value vw, value vh)
{
int x = Int_val(vx);
int y = Int_val(vy);
int w = Int_val(vw);
int h = Int_val(vh);
caml_gr_check_open();
if(caml_gr_remember_modeflag)
XDrawRectangle(caml_gr_display, caml_gr_bstore.win, caml_gr_bstore.gc,
x, Bcvt(y) - h, w, h);
if(caml_gr_display_modeflag) {
XDrawRectangle(caml_gr_display, caml_gr_window.win, caml_gr_window.gc,
x, Wcvt(y) - h, w, h);
XFlush(caml_gr_display);
}
return Val_unit;
}
value caml_gr_draw_arc_nat(value vx, value vy, value vrx, value vry, value va1, value va2)
{
int x = Int_val(vx);
int y = Int_val(vy);
int rx = Int_val(vrx);
int ry = Int_val(vry);
int a1 = Int_val(va1);
int a2 = Int_val(va2);
caml_gr_check_open();
if(caml_gr_remember_modeflag)
XDrawArc(caml_gr_display, caml_gr_bstore.win, caml_gr_bstore.gc,
x - rx, Bcvt(y) - ry, rx * 2, ry * 2, a1 * 64, (a2 - a1) * 64);
if(caml_gr_display_modeflag) {
XDrawArc(caml_gr_display, caml_gr_window.win, caml_gr_window.gc,
x - rx, Wcvt(y) - ry, rx * 2, ry * 2, a1 * 64, (a2 - a1) * 64);
XFlush(caml_gr_display);
}
return Val_unit;
}
value caml_gr_draw_arc(value *argv, int argc)
{
return caml_gr_draw_arc_nat(argv[0], argv[1], argv[2], argv[3], argv[4], argv[5]);
}
value caml_gr_set_line_width(value vwidth)
{
int width = Int_val(vwidth);
caml_gr_check_open();
XSetLineAttributes(caml_gr_display, caml_gr_window.gc,
width, LineSolid, CapRound, JoinRound);
XSetLineAttributes(caml_gr_display, caml_gr_bstore.gc,
width, LineSolid, CapRound, JoinRound);
return Val_unit;
}
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