X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fgeometry%2Fray.h;h=d8eb7d8405ec75f799226572c5135d08260b978b;hb=7d43d93ac2d701bb3de87cdf81e44c03e64c35c3;hp=99f447bcd62edc2a640039d1ad7ad1eea54bb8c2;hpb=24f239e418599c13a9d0bdc4942c188ccf0a8437;p=libs%2Fmath.git

diff --git a/source/geometry/ray.h b/source/geometry/ray.h
index 99f447b..d8eb7d8 100644
--- a/source/geometry/ray.h
+++ b/source/geometry/ray.h
@@ -7,6 +7,9 @@
 namespace Msp {
 namespace Geometry {
 
+/**
+A directed line segment.  Can be used to point at things.
+*/
 template<typename T, unsigned D>
 class Ray
 {
@@ -30,7 +33,7 @@ template<typename T, unsigned D>
 inline Ray<T, D>::Ray():
 	limit(0)
 {
-	direction[0] = 1;
+	direction[0] = T(1);
 }
 
 template<typename T, unsigned D>
@@ -46,14 +49,14 @@ inline Ray<T, D>::Ray(const LinAl::Vector<T, D> &s, const LinAl::Vector<T, D> &d
 	direction(normalize(d)),
 	limit(l)
 {
-	if(l<0)
+	if(l<T(0))
 		throw std::invalid_argument("Ray::Ray");
 }
 
 template<typename T, unsigned D>
 inline bool Ray<T, D>::check_limits(T x) const
 {
-	return x>=0 && (!limit || x<=limit);
+	return x>=T(0) && (!limit || x<=limit);
 }
 
 } // namespace Geometry