/*******************************************************************************  Copyright (C) 1998-2001  Ljubomir Milanovic & Horst Wagner**  This file is part of the g2 library****  This library is free software; you can redistribute it and/or**  modify it under the terms of the GNU Lesser General Public**  License as published by the Free Software Foundation; either**  version 2.1 of the License, or (at your option) any later version.****  This library is distributed in the hope that it will be useful,**  but WITHOUT ANY WARRANTY; without even the implied warranty of**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU**  Lesser General Public License for more details.****  You should have received a copy of the GNU Lesser General Public**  License along with this library; if not, write to the Free Software**  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA******************************************************************************//* * g2_splines_demo.c * 06/16/99 */#include <stdio.h>#include <g2.h>#ifdef DO_PS#include <g2_PS.h>#endif#ifdef DO_X11#include <g2_X11.h>#endif#ifdef DO_GD#include <g2_gd.h>#endif#ifdef DO_WIN32#include <g2_win32.h>#endif#ifdef DO_WMF32#include <g2_win32.h>#endif#define n	14#define o	60#define tn	0.6#define X11	0#define PS	1#define GD     2int otp=X11;int id=-1 ;	           /* default output device */void curves(){   int i;   double points[(2*n)];   double dy[n]   =   {  10., 280., 140., 200.,  60., 120., 380.,			500., 480., 400., 220., 180., 260., 340.};   for (i = 0; i < n; i++) {      points[(i+i)]	= (i*o)+20.;       /* from 20 to 800 (20+(13*60)) */      points[(i+i+1)]	= dy[i];   }   g2_pen(id, 1);   g2_poly_line(id, n, points);   g2_pen(id, 3);   g2_spline(id, n, points, o);   g2_pen(id, 7);   g2_b_spline(id, n, points, o);   g2_pen(id, 10);   g2_raspln(id, n, points, tn);   g2_pen(id, 19);   g2_para_3(id, n, points);   g2_pen(id, 22);   g2_para_5(id, n, points);}void axes(){   g2_line(id, 5, 300, 810, 300);   g2_line(id, 400, 5, 400, 560);}void draw(){   g2_rectangle(id, 5, 5, 810, 560);	/* window: 815 x 565 */   axes();   curves();}int main(int argc, char *argv[]){    int dev[5]={-1, -1, -1, -1, -1};    id=g2_open_vd();				  /* open virtual device */    printf("\nAdding..");    #ifdef DO_PS    printf("..PS");    dev[0]=g2_open_PS("g2_splines_demo.ps", g2_A4, g2_PS_land);    g2_attach(id, dev[0]);#endif#ifdef DO_X11    printf("..X11");    dev[1]=g2_open_X11(850, 600);    g2_attach(id, dev[1]);#endif#ifdef DO_GD    printf("..GD");    dev[2]=g2_open_gd("g2_splines_demo.png", 850, 600, g2_gd_png);    g2_attach(id, dev[2]);#endif#ifdef DO_WIN32    printf("..WIN32");    dev[3]=g2_open_win32(850, 600,"g2_splines_demo",0);	g2_set_auto_flush(dev[3],0);    g2_attach(id, dev[3]);#endif#ifdef DO_WMF32    printf("..WMF32");    dev[4]=g2_open_win32(850, 600,"g2_splines_demo.emf",1);	g2_set_auto_flush(dev[3],0);    g2_attach(id, dev[4]);#endif        g2_set_auto_flush(id,0);       g2_set_coordinate_system(id, 12, 15, 1., 1.);        draw();    g2_flush(id);    if (otp==X11) {	printf("\nDone.\n[Enter]\n");	getchar();    }    g2_close(id);    return 0;}