From 550acac3992f5b5aa2d162ed215ddd3359588450 Mon Sep 17 00:00:00 2001
From: Thomas White <taw@physics.org>
Date: Fri, 4 Dec 2009 15:31:43 +0100
Subject: Fix rotation group sampling.  D'oh.

---
 src/utils.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/utils.c b/src/utils.c
index f27b1228..5942299d 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -122,10 +122,10 @@ struct quaternion random_quaternion()
 {
 	struct quaternion q;
 
-	q.w = (double)random()/RAND_MAX;
-	q.x = (double)random()/RAND_MAX;
-	q.y = (double)random()/RAND_MAX;
-	q.z = (double)random()/RAND_MAX;
+	q.w = 2.0*(double)random()/RAND_MAX - 1.0;
+	q.x = 2.0*(double)random()/RAND_MAX - 1.0;
+	q.y = 2.0*(double)random()/RAND_MAX - 1.0;
+	q.z = 2.0*(double)random()/RAND_MAX - 1.0;
 	q = normalise_quaternion(q);
 
 	return q;
-- 
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