X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;ds=sidebyside;f=source%2Fgeometry%2Fhypersphere.h;h=de028fa580d627ed06d1cb811f43b104a450ed7a;hb=cc51208545c3941fcfdb078ad0c70c7fd607614e;hp=01aee0e57b22e2791763077aecb3e3193ea35843;hpb=643aa7b2317f88463f66da11e595ebe0f6c9621d;p=libs%2Fmath.git

diff --git a/source/geometry/hypersphere.h b/source/geometry/hypersphere.h
index 01aee0e..de028fa 100644
--- a/source/geometry/hypersphere.h
+++ b/source/geometry/hypersphere.h
@@ -2,6 +2,7 @@
 #define MSP_GEOMETRY_HYPERSPHERE_H_
 
 #include <cmath>
+#include <stdexcept>
 #include <msp/linal/vector.h>
 #include "hyperbox.h"
 #include "ray.h"
@@ -44,7 +45,10 @@ inline HyperSphere<T, D>::HyperSphere():
 template<typename T, unsigned D>
 inline HyperSphere<T, D>::HyperSphere(T r):
 	radius(r)
-{ }
+{
+	if(r<=T(0))
+		throw std::invalid_argument("HyperSphere::HyperShpere");
+}
 
 template<typename T, unsigned D>
 inline HyperSphere<T, D> *HyperSphere<T, D>::clone() const