Let beam cones start in pulsar center

src/pulsaranimationwidget.cpp

@@ -312,7 +312,7 @@ void PulsarAnimationWidget::paintGL()
                 glPopMatrix();
             }
 
-            glTranslatef(0.0, 0.0, -4.0);
+            glTranslatef(0.0, 0.0, -3.0);
 
             glMaterialfv(GL_FRONT, GL_AMBIENT, coneAmbient);
             glMaterialfv(GL_FRONT, GL_DIFFUSE, coneDiffuse);
@@ -329,7 +329,7 @@ void PulsarAnimationWidget::paintGL()
             glRotatef(m_pulsarRotationAngle - 90.0, 0.0, 0.0, 1.0);
             glRotatef(m_pulsarMagneticAxisInclination, 1.0, 0.0, 0.0);
 
-            glTranslatef(0.0, 0.0, -4.0);
+            glTranslatef(0.0, 0.0, -3.0);
 
             glMaterialfv(GL_FRONT, GL_AMBIENT, coneAmbient);
             glMaterialfv(GL_FRONT, GL_DIFFUSE, coneDiffuse);