'Satisfactory-ish' basis finding

git-svn-id: svn://cook.msm.cam.ac.uk:745/diff-tomo/dtr@135 bf6ca9ba-c028-0410-8290-897cf20841d1

1 files changed, 4 insertions, 0 deletions

diff --git a/src/utils.c b/src/utils.c
index eaaa036..4618b44 100644
--- a/src/utils.c
+++ b/src/utils.c
@@ -39,6 +39,10 @@ double modulus(double x, double y, double z) {
 	return sqrt(x*x + y*y + z*z);
 }
 
+double distance3d(double x1, double y1, double z1, double x2, double y2, double z2) {
+	return modulus(x1-x2, y1-y2, z1-z2);
+}
+
 /* Angle between two vectors.  Answer in radians */
 double angle_between(double x1, double y1, double z1, double x2, double y2, double z2) {