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