From: John Darrington <john@darrington.wattle.id.au>
Date: Fri, 28 May 2010 11:49:43 +0000 (+0200)
Subject: Fix inconsistent label positions on piecharts.
X-Git-Tag: v0.7.6~388
X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=571a1c6fa3b068837f98dcf3ad98d69753fd7634;p=pspp-builds.git

Fix inconsistent label positions on piecharts.

The labels of piechart slices did not match the positions
of the slices (possibly due to libplot legacy).  This
change fixes this problem.
---

diff --git a/src/output/charts/piechart-cairo.c b/src/output/charts/piechart-cairo.c
index 501c0bd4..3917e4e1 100644
--- a/src/output/charts/piechart-cairo.c
+++ b/src/output/charts/piechart-cairo.c
@@ -81,11 +81,11 @@ xrchart_draw_piechart (const struct chart_item *chart_item, cairo_t *cr,
       const double segment_angle =
 	pie->slices[i].magnitude / total_magnitude * 2 * M_PI ;
 
-      const double label_x = centre_x -
-	radius * sin(angle + segment_angle/2.0);
+      const double label_x = centre_x +
+	radius * cos (angle + segment_angle/2.0);
 
       const double label_y = centre_y +
-	radius * cos(angle + segment_angle/2.0);
+	radius * sin (angle + segment_angle/2.0);
 
       /* Fill the segment */
       draw_segment (cr,