X-Git-Url: http://git.tdb.fi/?p=libs%2Fdemoscene.git;a=blobdiff_plain;f=source%2Fvignette.cpp;fp=source%2Fvignette.cpp;h=27b2dc1f156f9690d053a994662b3ab10e8acecc;hp=e4d7de8f3a848e61c4fd31c6fce8059a550010ed;hb=b90bd4cd4fc8ea898912541ab48995117cecf174;hpb=77d0c7ac9e3ebe1cecaf0c84e1501d3b6459055f

diff --git a/source/vignette.cpp b/source/vignette.cpp
index e4d7de8..27b2dc1 100644
--- a/source/vignette.cpp
+++ b/source/vignette.cpp
@@ -27,7 +27,8 @@ void Vignette::set_optical(float pupil, float aperture)
 	float p_sq = pupil*pupil;
 	float a_sq = aperture*aperture;
 	float two_ap = 2*pupil*aperture;
-	shdata.uniform("optical", pupil, aperture, a_sq, a_sq*M_PI);
+	static const float pi = Geometry::Angle<float>::straight().radians();
+	shdata.uniform("optical", pupil, aperture, a_sq, a_sq*pi);
 	shdata.uniform("optical_range", p_sq-two_ap+a_sq, p_sq+two_ap+a_sq);
 }