/*
**      $Id: xy03c.c,v 1.14 1995/06/22 21:09:26 haley Exp $
*/
/***********************************************************************
*                                                                      *
*                Copyright (C)  1995                                   *
*        University Corporation for Atmospheric Research               *
*                All Rights Reserved                                   *
*                                                                      *
***********************************************************************/
/*
**  File:       xy03c.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
**                 with some of the XyPlot line resources tweaked.  A
**                 resource file is used to changed the resources.
**                 This program uses the same Y-axis dataset as the
**                 example "xy02", but this time values for the X
**                 axis are specified, changing the look of the plot.
**
**                 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     i, rlist, len[2];
    float   xdra[NPTS],ydra[NPTS], theta;
    float   cmap[4][3];
    int     NCGM=0, X11=1, PS=0;
/*
 * Initialize some data for the XyPlot object.
 */
    for( i = 0; i < NPTS; i++ ) {
        theta = PI100*(float)(i);
        xdra[i] = 500.+.9*(float)(i)*cos(theta);
        ydra[i] = 500.+.9*(float)(i)*sin(theta);
    }
/*
 * Initialize the HLU library and set up resource template.
 */
    NhlInitialize();
    rlist = NhlRLCreate(NhlSETRL);
/*
 * Modify the color map.  Color indices '0' and '1' are the background
 * and foreground colors respectively.
 */
    cmap[0][0] = cmap[0][1] = cmap[0][2] = 0.;
    cmap[1][0] = cmap[1][1] = cmap[1][2] = 1.;
    cmap[2][0] = 0.; cmap[2][1] = .5; cmap[2][2] = 1.;
    cmap[3][0] = 0.; cmap[3][1] = 1.; cmap[3][2] = 0.;
    len[0] = 4;  len[1] = 3;
/*
 * Create Application object.  The Application object name is used to
 * determine the name of the resource file, which is "xy03.res" in
 * this case.
 */
    NhlRLClear(rlist);
    NhlRLSetString(rlist,NhlNappDefaultParent,"True");
    NhlRLSetString(rlist,NhlNappUsrDir,"./");
    NhlCreate(&appid,"xy03",NhlappClass,NhlDEFAULT_APP,rlist);

    if (NCGM) {
/*
 * Create a meta file object.
 */
        NhlRLClear(rlist);
        NhlRLSetString(rlist,NhlNwkMetaName,"./xy03c.ncgm");
        NhlRLSetMDFloatArray(rlist,NhlNwkColorMap,&cmap[0][0],2,len);
        NhlCreate(&xworkid,"xy03Work",NhlncgmWorkstationClass,
                  NhlDEFAULT_APP,rlist);
    }
    else if (X11) {
/*
 * Create an XWorkstation object.
 */
        NhlRLClear(rlist);
        NhlRLSetInteger(rlist,NhlNwkPause,True);
        NhlRLSetMDFloatArray(rlist,NhlNwkColorMap,&cmap[0][0],2,len);
        NhlCreate(&xworkid,"xy03Work",NhlxWorkstationClass,
                  NhlDEFAULT_APP,rlist);
    }
    else if (PS) {
/*
 * Create a PS workstation.
 */
        NhlRLClear(rlist);
        NhlRLSetString(rlist,NhlNwkPSFileName,"./xy03c.ps");
        NhlRLSetMDFloatArray(rlist,NhlNwkColorMap,&cmap[0][0],2,len);
        NhlCreate(&xworkid,"xy03Work",NhlpsWorkstationClass,
                  NhlDEFAULT_APP,rlist);
    }
/*
 * Define the data object.  The id for this object will later be used
 * as the value for the XyPlot data resource, "xyCoordData".
 */
    NhlRLClear(rlist);
    NhlRLSetFloatArray(rlist,NhlNcaXArray,xdra,NhlNumber(xdra));
    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 "xy03.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);
}