/usr/share/ncarg/hluex/primitives/pr04c.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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* $Id: pr04c.c,v 1.6 2010-03-15 22:49:24 haley Exp $
*/
/***********************************************************************
* *
* Copyright (C) 1993 *
* University Corporation for Atmospheric Research *
* All Rights Reserved *
* *
***********************************************************************/
/*
* File: pr04c.c
*
* Author: David Brown
* National Center for Atmospheric Research
* PO 3000, Boulder, Colorado
*
* Date: Wed May 22 19:16:58 MDT 1996
*
* Description: Demonstrates graphics primitives drawn in NDC and
* and data space into an IrregularPlot (and therefore
* using the IrregularTransformation).
*/
#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/IrregularPlot.h>
int main(int argc, char *argv[])
{
char const *wks_type = "x11";
int rlist,grlist;
int appid,wid,canvas;
int i;
float plx[5] = { 0.1,0.9,0.5,0.1 };
float ply[5] = { 0.1,0.1,0.9,0.1 };
float pmx[4] = { 0.05,0.95,0.5,0.5 };
float pmy[4] = { 0.05,0.05,1.05,0.5 };
float pgx[4] = { 0.2,0.8,0.5,0.2 };
float pgy[4] = { 0.25,0.25,0.85,0.25 };
float dpgx[7] = { 5.0,110.0,110.0,0.0,110.0,5.0,5.0 };
float dpgy[7] = { 10.,10.,20.0,20.,110.,110,10.0 };
/*
* Initialize the high level utility library
*/
NhlInitialize();
/*
* Create an application context. Set the app dir to the current
* directory so the application looks for a resource file in the working
* directory.
*/
rlist = NhlRLCreate(NhlSETRL);
grlist = NhlRLCreate(NhlGETRL);
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNappUsrDir,"./");
NhlCreate(&appid,"pr04",NhlappClass,NhlDEFAULT_APP,rlist);
if (!strcmp(wks_type,"ncgm") || !strcmp(wks_type,"NCGM")) {
/*
* Create a meta file workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkMetaName,"./pr04c.ncgm");
NhlCreate(&wid,"pr04Work",
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,"pr04Work",NhlcairoWindowWorkstationClass,appid,rlist);
}
else if (!strcmp(wks_type,"oldps") || !strcmp(wks_type,"OLDPS")) {
/*
* Create an older-style PostScript workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkPSFileName,"pr04c.ps");
NhlCreate(&wid,"pr04Work",NhlpsWorkstationClass,appid,rlist);
}
else if (!strcmp(wks_type,"oldpdf") || !strcmp(wks_type,"OLDPDF")) {
/*
* Create an older-style PDF workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkPDFFileName,"pr04c.pdf");
NhlCreate(&wid,"pr04Work",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,"pr04c");
NhlRLSetString(rlist,NhlNwkFormat,(char*)wks_type);
NhlCreate(&wid,"pr04Work",NhlcairoDocumentWorkstationClass,appid,rlist);
}
else if (!strcmp(wks_type,"png") || !strcmp(wks_type,"PNG")) {
/*
* Create a cairo PNG workstation.
*/
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNwkFileName,"pr04c");
NhlRLSetString(rlist,NhlNwkFormat,(char*)wks_type);
NhlCreate(&wid,"pr04Work",NhlcairoImageWorkstationClass,appid,rlist);
}
/*
* Create an IrregularPlot that covers the entire NDC space
* to use as a drawing canvas
*/
NhlRLClear(rlist);
NhlRLSetFloat(rlist,NhlNvpXF,0.1);
NhlRLSetFloat(rlist,NhlNvpYF,0.9);
NhlRLSetFloat(rlist,NhlNvpWidthF,0.8);
NhlRLSetFloat(rlist,NhlNvpHeightF,0.8);
NhlRLSetString(rlist,NhlNpmTitleDisplayMode,"always");
NhlRLSetString(rlist,NhlNtiMainString,
"Irregular Plot with NDC Primitives");
NhlCreate(&canvas,"canvas",NhlirregularPlotClass,wid,rlist);
NhlDraw(canvas);
NhlNDCPolyline(canvas,0,plx,ply,4);
NhlNDCPolygon(canvas,0,pgx,pgy,4);
NhlNDCPolymarker(canvas,0,pmx,pmy,4);
NhlFrame(wid);
for (i=0; i<4; i++) {
plx[i] = plx[i] * 100.0 + 50.;
ply[i] = ply[i] * 100.0 + 50.;
pgx[i] = pgx[i] * 100.0 + 50.;
pgy[i] = pgy[i] * 100.0 + 50.;
pmx[i] = pmx[i] * 100.0 + 50.;
pmy[i] = pmy[i] * 100.0 + 50.;
}
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNtiMainString,
"Clipped Data Space Primitives");
NhlSetValues(canvas,rlist);
NhlDraw(canvas);
NhlDataPolyline(canvas,0,plx,ply,4);
NhlDataPolymarker(canvas,0,pmx,pmy,4);
NhlDataPolygon(canvas,0,pgx,pgy,4);
NhlFrame(wid);
for (i=0; i<4; i++) {
plx[i] = plx[i] - 40.;
ply[i] = ply[i] - 40.;
pgx[i] = pgx[i] - 40.;
pgy[i] = pgy[i] - 40.;
pmx[i] = pmx[i] - 40.;
pmy[i] = pmy[i] - 40.;
}
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNtiMainString,
"Data Space Primitives Repositioned");
NhlSetValues(canvas,rlist);
NhlDraw(canvas);
NhlDataPolyline(canvas,0,plx,ply,4);
NhlDataPolymarker(canvas,0,pmx,pmy,4);
NhlDataPolygon(canvas,0,pgx,pgy,4);
NhlFrame(wid);
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNtiMainString,
"A Diamond in Data Space");
NhlSetValues(canvas,rlist);
NhlDraw(canvas);
plx[0] = 10.0;
plx[1] = 50.0;
plx[2] = 90.0;
plx[3] = 50.0;
plx[4] = 10.0;
ply[0] = 50.0;
ply[1] = 10.0;
ply[2] = 50.0;
ply[3] = 90.0;
ply[4] = 50.0;
NhlDataPolygon(canvas,0,plx,ply,4);
plx[0] = 5.0;
plx[2] = 95.0;
plx[4] = 5.0;
ply[1] = 5.0;
ply[3] = 95.0;
NhlDataPolyline(canvas,0,plx,ply,5);
NhlFrame(wid);
NhlRLClear(rlist);
NhlRLSetString(rlist,NhlNtiMainString,
"A Self-Intersecting Data Polygon");
NhlSetValues(canvas,rlist);
NhlDraw(canvas);
NhlDataPolygon(canvas,0,dpgx,dpgy,7);
NhlFrame(wid);
NhlClose();
exit(0);
}
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