/*
**      $Id: xy02c.c,v 1.15 1995/06/22 21:09:22 haley Exp $
*/
/***********************************************************************
*                                                                      *
*                Copyright (C)  1995                                   *
*        University Corporation for Atmospheric Research               *
*                All Rights Reserved                                   *
*                                                                      *
***********************************************************************/
/*
**  File:       xy02c.c
**
**  Author:     Mary Haley
**          National Center for Atmospheric Research
**          PO 3000, Boulder, Colorado
**
**  Date:       Fri Jan 27 08:24:42 MST 1995
**
** Description:    This program shows how to create an XyPlot object
**                 and how to tweak some of the XyPlot resources to
**                 change the appearance of the plot.  A resource file
**                 is used to change the resources.
**
**                 The "CoordArrays" object is used to set up the data.
*/

#include <stdio.h>
#include <math.h>
#include <ncarg/hlu/hlu.h>
#include <ncarg/hlu/ResList.h>
#include <ncarg/hlu/App.h>
#include <ncarg/hlu/XWorkstation.h>
#include <ncarg/hlu/NcgmWorkstation.h>
#include <ncarg/hlu/PSWorkstation.h>
#include <ncarg/hlu/XyPlot.h>
#include <ncarg/hlu/CoordArrays.h>

/*
 * Define the number of points in the curve.
 */
#define NPTS  500
#define PI100 .031415926535898

main()
{
    int     appid,xworkid,plotid,dataid;
    int     rlist;
    int     i;
    float   ydra[NPTS], theta;
    int NCGM=0, X11=1, PS=0;
/*
 * Initialize some data for the XyPlot object.
 */
    for( i = 0; i < NPTS; i++ ) {
        theta = PI100*(float)(i);
        ydra[i] = 500.+.9*(float)(i)*sin(theta);
    }
/*
 * Initialize the HLU library and set up resource template.
 */
    NhlInitialize();
    rlist = NhlRLCreate(NhlSETRL);
/*
 * Create Application object.  The Application object name is used to
 * determine the name of the resource file, which is "xy02.res" in
 * this case.
 */
    NhlRLClear(rlist);
    NhlRLSetString(rlist,NhlNappDefaultParent,"True");
    NhlRLSetString(rlist,NhlNappUsrDir,"./");
    NhlCreate(&appid,"xy02",NhlappClass,NhlDEFAULT_APP,rlist);

    if (NCGM) {
/*
 * Create a meta file object.
 */
        NhlRLClear(rlist);
        NhlRLSetString(rlist,NhlNwkMetaName,"./xy02c.ncgm");
        NhlCreate(&xworkid,"xy02Work",NhlncgmWorkstationClass,
                  NhlDEFAULT_APP,rlist);
    }
    else if (X11) {
/*
 * Create an XWorkstation object.
 */
        NhlRLClear(rlist);
        NhlRLSetInteger(rlist,NhlNwkPause,True);
        NhlCreate(&xworkid,"xy02Work",NhlxWorkstationClass,
                  NhlDEFAULT_APP,rlist);
    }
    else if (PS) {
/*
 * Create a PS workstation.
 */
        NhlRLClear(rlist);
        NhlRLSetString(rlist,NhlNwkPSFileName,"./xy02c.ps");
        NhlCreate(&xworkid,"xy02Work",NhlpsWorkstationClass,
                  NhlDEFAULT_APP,rlist);
    }
/*
 * Define the data object.  Since only the Y values are specified here,
 * each Y value will be paired with its integer array index.  The id
 * for this object will later be used as the value for the XyPlot
 * object resource, "xyCoordData".
 */
    NhlRLClear(rlist);
    NhlRLSetFloatArray(rlist,NhlNcaYArray,ydra,NhlNumber(ydra));
    NhlCreate(&dataid,"xyData",NhlcoordArraysClass,
              NhlDEFAULT_APP,rlist);
/*
 * Create the XyPlot object which is created as a child of the
 * XWorkstation object.  The resources that are being changed are done
 * in the "xy02.res" file.
 */
    NhlRLClear(rlist);
    NhlRLSetInteger(rlist,NhlNxyCoordData,dataid);
    NhlCreate(&plotid,"xyPlot",NhlxyPlotClass,xworkid,rlist);
/*
 * Draw the plot.
 */
    NhlDraw(plotid);
    NhlFrame(xworkid);
/*
 * NhlDestroy destroys the given id and all of its children
 * so destroying "xworkid" will also destroy "plotid".
 */
    NhlRLDestroy(rlist);
    NhlDestroy(xworkid);
    NhlDestroy(appid);
/*
 * Restores state.
 */
    NhlClose();

    exit(0);
}