From 205855acabc4c7f1b2f0e20ad6cb6cd0abad7520 Mon Sep 17 00:00:00 2001
From: Oliver Bock <oliver.bock@aei.mpg.de>
Date: Thu, 29 Jul 2010 18:10:44 +0200
Subject: [PATCH] Correcting for beam intensity peak offset in texture (to
 match profile)

---
 src/pulsaranimationwidget.cpp | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/src/pulsaranimationwidget.cpp b/src/pulsaranimationwidget.cpp
index 5504768..7fe75a3 100644
--- a/src/pulsaranimationwidget.cpp
+++ b/src/pulsaranimationwidget.cpp
@@ -679,9 +679,16 @@ void PulsarAnimationWidget::setPulsarMagneticAxisInclination(const int degrees)
 
 void PulsarAnimationWidget::setPulsarBeamAngle(const int degrees)
 {
-    m_pulsarBeamAngle = degrees;
+    double beamTexturePeakCorrectionFactor = 0.83;
+    double correctedOuterRadius;
 
+    // compute visual radius
     m_pulsarBeamOuterRadius = tan(deg2rad * degrees * 0.5f) * m_pulsarBeamLength;
+
+    // compute corrected angle for pulse profile
+    correctedOuterRadius = m_pulsarBeamOuterRadius * beamTexturePeakCorrectionFactor;
+    m_pulsarBeamAngle = 2 * atan(correctedOuterRadius / m_pulsarBeamLength) * 180.0/PI;
+
     updatePulseProfile();
 
     updateGL();
-- 
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