93 lines
2.6 KiB
C
93 lines
2.6 KiB
C
/***********************************************************************/
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/* */
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/* Objective Caml */
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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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/* Automatique. Distributed only by permission. */
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/* */
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/***********************************************************************/
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/* $Id$ */
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#include "libgraph.h"
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#include <alloc.h>
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value 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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gr_check_open();
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XDrawPoint(grdisplay, grwindow.win, grwindow.gc, x, Wcvt(y));
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XDrawPoint(grdisplay, grbstore.win, grbstore.gc, x, Bcvt(y));
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XFlush(grdisplay);
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return Val_unit;
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}
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value gr_moveto(value vx, value vy)
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{
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grx = Int_val(vx);
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gry = Int_val(vy);
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return Val_unit;
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}
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value gr_current_point(void)
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{
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value res;
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res = alloc_tuple(2);
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Field(res, 0) = Val_int(grx);
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Field(res, 1) = Val_int(gry);
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return res;
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}
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value 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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gr_check_open();
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XDrawLine(grdisplay, grwindow.win, grwindow.gc,
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grx, Wcvt(gry), x, Wcvt(y));
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XDrawLine(grdisplay, grbstore.win, grbstore.gc,
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grx, Bcvt(gry), x, Bcvt(y));
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grx = x;
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gry = y;
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XFlush(grdisplay);
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return Val_unit;
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}
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value gr_draw_arc_nat(value vx, value vy, value vrx, value vry, value va1, 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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gr_check_open();
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XDrawArc(grdisplay, grwindow.win, grwindow.gc,
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x - rx, Wcvt(y) - ry, rx * 2, ry * 2, a1 * 64, (a2 - a1) * 64);
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XDrawArc(grdisplay, grbstore.win, grbstore.gc,
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x - rx, Bcvt(y) - ry, rx * 2, ry * 2, a1 * 64, (a2 - a1) * 64);
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XFlush(grdisplay);
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return Val_unit;
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}
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value gr_draw_arc(value *argv, int argc)
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{
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return gr_draw_arc_nat(argv[0], argv[1], argv[2], argv[3], argv[4], argv[5]);
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}
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value gr_set_line_width(value vwidth)
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{
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int width = Int_val(vwidth);
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gr_check_open();
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XSetLineAttributes(grdisplay, grwindow.gc,
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width, LineSolid, CapRound, JoinRound);
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XSetLineAttributes(grdisplay, grbstore.gc,
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width, LineSolid, CapRound, JoinRound);
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return Val_unit;
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}
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