[Plplot-cvs] plplot/examples/c x22c.c,NONE,1.1 Makefile.am,1.17,1.18 Makefile.examples.in,1.19,1.20

[<and...@us...>]

Update of /cvsroot/plplot/plplot/examples/c
In directory sc8-pr-cvs1.sourceforge.net:/tmp/cvs-serv30158/examples/c

Modified Files:
	Makefile.am Makefile.examples.in 
Added Files:
	x22c.c 
Log Message:
Change plarrows to use an user supplied arrow style via the new API
call plsarrow. The default is the old style if none is supplied. Add 
C++ bindings. Add example x22c to demonstrate the routines.


--- NEW FILE: x22c.c ---
/* $Id:

    Simple arrow plot example
    Copyright (C) 2004 Andrew Ross <and...@us...>

    This file is part of PLplot.

    PLplot is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Library Public License as published
    by the Free Software Foundation; either version 2 of the License, or
    (at your option) any later version.

    PLplot 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 Library General Public License for more details.

    You should have received a copy of the GNU Library General Public License
    along with PLplot; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA

*/

#include "plcdemos.h"
#include "plevent.h"

/* Variables and data arrays used by plot generators */

static PLFLT x[100], y[100], u[100], v[100], r[100];

static PLFLT arrow_x[6] = {0.5, -0.5, 0.5, 0.3, 0.5, 0.3};
static PLFLT arrow_y[6] = {0.0, 0.0,  0.0, 0.2, 0.0, -0.2};

/*--------------------------------------------------------------------------*\
 * main
 *
 * Generates several simple vector plots.  
\*--------------------------------------------------------------------------*/

int
main(int argc, char *argv[])
{
    int i,j,k, nx, ny, npts;
    PLFLT dx, dy;
    PLFLT xmin, xmax, ymin, ymax;

/* Parse and process command line arguments */

    plParseOpts(&argc, argv, PL_PARSE_FULL);

/* Initialize plplot */

    plinit();

    dx = 1.0;
    dy = 1.0;

    nx = 10;
    ny = 10;
    npts = nx*ny;

    xmin = -nx/2*dx;
    xmax = nx/2*dx;
    ymin = -ny/2*dy;
    ymax = ny/2*dy;

    k = 0;
    for (i = 0; i<nx; i++) {
	for (j = 0; j<ny; j++) {
	    x[k] = (i-nx/2+0.5)*dx;
	    y[k] = (j-ny/2+0.5)*dy;
	    u[k] = y[k];
	    v[k] = -x[k];
	    k++;
	}
    }

    plenv(xmin, xmax, ymin, ymax, 0, 0);
    pllab("(x)", "(y)", "#frPLplot Example 22 - vector plot");
    plarrows(u,v,x,y,npts,-0.5,dx,dy);

    plsarrow(arrow_x, arrow_y, 6);
    plenv(xmin, xmax, ymin, ymax, 0, 0);
    pllab("(x)", "(y)", "#frPLplot Example 22 - vector plot");
    plarrows(u,v,x,y,npts,-0.5,dx,dy);

    plend();
    exit(0);
}

Index: Makefile.am
===================================================================
RCS file: /cvsroot/plplot/plplot/examples/c/Makefile.am,v
retrieving revision 1.17
retrieving revision 1.18
diff -u -d -r1.17 -r1.18
--- Makefile.am	28 Jan 2004 19:38:52 -0000	1.17
+++ Makefile.am	10 Feb 2004 14:45:18 -0000	1.18
@@ -46,7 +46,8 @@
 	x18c.c \
 	x19c.c \
 	x20c.c \
-	x21c.c
+	x21c.c \
+	x22c.c
 examples_c_DATA = \
 	$(sources) \
 	Makefile.examples
@@ -77,7 +78,8 @@
 	x18c \
 	x19c \
 	x20c \
-	x21c
+	x21c \
+	x22c
 
 LDADD = $(libplplot)
 

Index: Makefile.examples.in
===================================================================
RCS file: /cvsroot/plplot/plplot/examples/c/Makefile.examples.in,v
retrieving revision 1.19
retrieving revision 1.20
diff -u -d -r1.19 -r1.20
--- Makefile.examples.in	17 Jan 2004 16:41:38 -0000	1.19
+++ Makefile.examples.in	10 Feb 2004 14:45:18 -0000	1.20
@@ -48,7 +48,8 @@
 		 x18c$(EXEEXT) \
 		 x19c$(EXEEXT) \
 		 x20c$(EXEEXT) \
-		 x21c$(EXEEXT)
+		 x21c$(EXEEXT) \
+		 x22c$(EXEEXT)
 
 all: $(EXECUTABLES_list)