/usr/share/ncarg/hluex/primitives/pr02c.c is in libncarg-data 6.4.0-9.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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; ;
; Copyright (C) 1996 ;
; University Corporation for Atmospheric Research ;
; All Rights Reserved ;
; ;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;
; File: pr02c.c
;
; Author: Lynn Hermanson
; National Center for Atmospheric Research
; PO 3000, Boulder, Colorado
;
; Date: May 6, 1996
;
; Description: Given an array of xaxis values and
; an array of yaxis values, where each
; x,y pair corresponds to one vertex or
; the location of one point, draw a
; square (a polyline), four points (asterisks)
; at the corners of a square (a polymarker), and
; a rectangular filled area (a polygon),on to
; a blank canvas (an empty default logLinPlot).
;
; Polylines, polymarkers, and polygons, are
; refered to as primitives.
*/
#include <stdio.h>
#include <math.h>
#include <ncarg/gks.h>
#include <ncarg/ncargC.h>
#include <ncarg/hlu/hlu.h>
#include <ncarg/hlu/App.h>
#include <ncarg/hlu/NcgmWorkstation.h>
#include <ncarg/hlu/PSWorkstation.h>
#include <ncarg/hlu/PDFWorkstation.h>
#include <ncarg/hlu/CairoWorkstation.h>
#include <ncarg/hlu/LogLinPlot.h>
int main(int argc, char *argv[])
{
char const *wks_type = "x11";
int rlist,grlist;
int appid,wid,cid,gsid_pl,gsid_pm, gsid_pg;
/*These are the polyline points*/ /*a square*/
float X[] = { 0.25,0.25,0.45,0.45,0.25 };
float Y[] = { 0.25,0.45,0.45,0.25,0.25 };
/*These are the polymarker points*/ /*four corner points*/
float U[] = { 0.35,0.35,0.55,0.55 };
float V[] = { 0.35,0.55,0.55,0.35 };
/*These are the polygon points*/ /*a filled rectangle*/
float PX[] = { 0.6,0.7,0.7,0.8,0.6 };
float PY[] = { 0.2,0.8,0.8,0.2,0.2 };
/*
* Initialize the high level utility library
*/
NhlInitialize();
/* Next,
; create an application context. Set the app dir to the current directory
; so the application looks for a resource file in the working directory.
; ***See resource file pr02.res***
*/
rlist = NhlRLCreate(NhlSETRL);
grlist = NhlRLCreate(NhlGETRL);
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNappUsrDir,"./");
NhlCreate(&appid,"pr02",NhlappClass,NhlDEFAULT_APP,rlist);
/*; Choose to display output to an X11 workstation.(set above)*/
if (!strcmp(wks_type,"ncgm") || !strcmp(wks_type,"NCGM")) {
/*
* Create a meta file workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkMetaName,"./pr02c.ncgm");
NhlCreate(&wid,"pr02Work",
NhlncgmWorkstationClass,NhlDEFAULT_APP,rlist);
}
else if (!strcmp(wks_type,"x11") || !strcmp(wks_type,"X11")) {
/*
* Create an X workstation.
*/
NhlRLClear(rlist);
NhlRLSetInteger(rlist,NhlNwkPause,True);
NhlCreate(&wid,"pr02Work",NhlcairoWindowWorkstationClass,appid,rlist);
}
else if (!strcmp(wks_type,"oldps") || !strcmp(wks_type,"OLDPS")) {
/*
* Create an older-style PostScript workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkPSFileName,"pr02c.ps");
NhlCreate(&wid,"pr02Work",NhlpsWorkstationClass,appid,rlist);
}
else if (!strcmp(wks_type,"oldpdf") || !strcmp(wks_type,"OLDPDF")) {
/*
* Create an older-style PDF workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkPDFFileName,"pr02c.pdf");
NhlCreate(&wid,"pr02Work",NhlpdfWorkstationClass,appid,rlist);
}
else if (!strcmp(wks_type,"pdf") || !strcmp(wks_type,"PDF") ||
!strcmp(wks_type,"ps") || !strcmp(wks_type,"PS")) {
/*
* Create a cairo PS/PDF workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkFileName,"pr02c");
NhlRLSetString(rlist,NhlNwkFormat,(char*)wks_type);
NhlCreate(&wid,"pr02Work",NhlcairoDocumentWorkstationClass,appid,rlist);
}
else if (!strcmp(wks_type,"png") || !strcmp(wks_type,"PNG")) {
/*
* Create a cairo PNG workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkFileName,"pr02c");
NhlRLSetString(rlist,NhlNwkFormat,(char*)wks_type);
NhlCreate(&wid,"pr02Work",NhlcairoImageWorkstationClass,appid,rlist);
}
/*; Create a blank plot object to place the primitives on.*/
NhlRLClear(rlist);
NhlCreate(&cid,"canvas",NhllogLinPlotClass,wid,rlist);
/*; Create a graphicPlot object consisting of a thick blue square, large
; red filled circular corner points,and a dashed red triangle
; filled with green stripes.
; The graphicStyle object is NOT a stand-alone plot object. There
; must exist some kind of plot object which has already been drawn
; to place the primitives on.
*/
/* make polyline */
NhlRLClear(rlist);
/*;;;**** See resource file pr02.res ****
;;; NhlRLSetInteger(rlist,NhlNgsLineColor, 4);
;;; NhlRLSetInteger(rlist,NhlNgsLineThicknessF, 3);
;;;*/
NhlCreate(&gsid_pl,"pr02polyline",NhlgraphicStyleClass,wid,rlist);
/* make polymarker */
NhlRLClear(rlist);
/*;;;**** See resource file pr02.res ****
;;; NhlRLSetInteger(rlist,NhlNgsMarkerIndex, 16);
;;; NhlRLSetFloat(rlist,NhlNgsMarkerSizeF, .02);
;;; NhlRLSetInteger(rlist,NhlNgsMarkerColor, 2);
;;;*/
NhlCreate(&gsid_pm,"pr02polymarker",NhlgraphicStyleClass,wid,rlist);
/* make polygon */
NhlRLClear(rlist);
/*;;;**** See resource file pr02.res ****
;;; NhlRLSetInteger(rlist,NhlNgsFillIndex, 1);
;;; NhlRLSetInteger(rlist,NhlNgsFillColor, 3);
;;; NhlRLSetString(rlist,NhlNgsEdgesOn, "true");
;;; NhlRLSetInteger(rlist,NhlNgsEdgeColor, 2);
;;; NhlRLSetInteger(rlist,NhlNgsEdgeThicknessF, 3);
;;; NhlRLSetInteger(rlist,NhlNgsEdgeDashPattern, 1);
;;;*/
NhlCreate(&gsid_pg,"pr02polygon",NhlgraphicStyleClass,wid,rlist);
/*; Draw the shapes onto the blank logLinPlot object.
; Signify end of frame.*/
NhlDraw(cid);
/* The last paramenter is the number of points required*/
NhlNDCPolyline(cid, gsid_pl, X, Y,5);
NhlNDCPolymarker(cid, gsid_pm, U, V,4);
NhlNDCPolygon(cid, gsid_pg, PX, PY,5);
NhlFrame(wid);
/*; Destroy all of the objects created, close the HLU library and exit.*/
NhlDestroy(cid);
NhlDestroy(wid);
NhlDestroy(appid);
NhlClose();
exit(0);
}
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