X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Foutput%2Fcharts%2Fpiechart.c;h=97910010c69101d16c21f607cc13a369aad0f3b7;hb=62120c1a218f5172d69357073297a1004ec9ee52;hp=15d69664bb8bf9ef4fc662ffea010f288486dfce;hpb=f5c108becd49d78f4898cab11352291f5689d24e;p=pspp-builds.git

diff --git a/src/output/charts/piechart.c b/src/output/charts/piechart.c
index 15d69664..97910010 100644
--- a/src/output/charts/piechart.c
+++ b/src/output/charts/piechart.c
@@ -1,27 +1,25 @@
-/* PSPP - draws pie charts of sample statistics
+/* PSPP - a program for statistical analysis.
+   Copyright (C) 2004, 2009 Free Software Foundation, Inc.
 
-Copyright (C) 2004 Free Software Foundation, Inc.
+   This program is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
 
-This program is free software; you can redistribute it and/or
-modify it under the terms of the GNU General Public License as
-published by the Free Software Foundation; either version 2 of the
-License, or (at your option) any later version.
+   This program 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 General Public License for more details.
 
-This program 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
-General Public License for more details.
-
-You should have received a copy of the GNU General Public License
-along with this program; if not, write to the Free Software
-Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301, USA. */
+   You should have received a copy of the GNU General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>. */
 
 
 #include <config.h>
 
 #include <float.h>
 #include <assert.h>
+#include <gsl/gsl_math.h>
 #include <math.h>
 #include <stdio.h>
 
@@ -35,14 +33,6 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 
 #include "minmax.h"
 
-
-/* Pie charts of course need to know Pi :) */
-#ifndef M_PI
-#define M_PI ( 22.0 / 7.0 )
-#endif
-
-
-
 /* Draw a single slice of the pie */
 static void
 draw_segment(struct chart *ch,
@@ -58,7 +48,7 @@ void
 piechart_plot(const char *title, const struct slice *slices, int n_slices)
 {
   int i;
-  double total_magnetude=0;
+  double total_magnitude=0;
 
   struct chart *ch = chart_create();
 
@@ -76,18 +66,19 @@ piechart_plot(const char *title, const struct slice *slices, int n_slices)
 			    1.0 / 4.0 * (ch->data_right - ch->data_left)
 			    );
 
+  double angle;
+
 
-  chart_write_title(ch, title);
+  chart_write_title(ch, "%s", title);
 
   for (i = 0 ; i < n_slices ; ++i )
-    total_magnetude += slices[i].magnetude;
+    total_magnitude += slices[i].magnitude;
 
+  angle = 0.0;
   for (i = 0 ; i < n_slices ; ++i )
     {
-      static double angle=0.0;
-
       const double segment_angle =
-	slices[i].magnetude / total_magnetude * 2 * M_PI ;
+	slices[i].magnitude / total_magnitude * 2 * M_PI ;
 
       const double label_x = centre_x -
 	radius * sin(angle + segment_angle/2.0);
@@ -99,7 +90,7 @@ piechart_plot(const char *title, const struct slice *slices, int n_slices)
       draw_segment(ch,
 		   centre_x, centre_y, radius,
 		   angle, segment_angle,
-		   data_colour[i]);
+		   data_colour[i % N_CHART_COLOURS]);
 
       /* Now add the labels */
       if ( label_x < centre_x )
@@ -107,7 +98,7 @@ piechart_plot(const char *title, const struct slice *slices, int n_slices)
 	  pl_line_r(ch->lp, label_x, label_y,
 		    left_label, label_y );
 	  pl_moverel_r(ch->lp,0,5);
-	  pl_alabel_r(ch->lp,0,0,slices[i].label);
+	  pl_alabel_r (ch->lp, 0, 0, ds_cstr (&slices[i].label));
 	}
       else
 	{
@@ -116,7 +107,7 @@ piechart_plot(const char *title, const struct slice *slices, int n_slices)
 		    right_label, label_y
 		    );
 	  pl_moverel_r(ch->lp,0,5);
-	  pl_alabel_r(ch->lp,'r',0,slices[i].label);
+	  pl_alabel_r (ch->lp, 'r', 0, ds_cstr (&slices[i].label));
 	}
 
       angle += segment_angle;