+ ZLimits::thickness

Sample/Scattering/ZLimits.cpp

@@ -32,7 +32,6 @@ bool ZLimits::isFinite() const
     return !std::isinf(m_zmin) && !std::isinf(m_zmax);
 }
 
-
 ZLimits ZLimits::enclosingInterval(const ZLimits& left, const ZLimits& right)
 {
     return {std::min(left.zBottom(), right.zBottom()), std::max(left.zTop(), right.zTop())};

Sample/Scattering/ZLimits.h

@@ -37,6 +37,7 @@ public:
 
     double zBottom() const { return m_zmin; }
     double zTop() const { return m_zmax; }
+    double thickness() const { return m_zmax - m_zmin; }
 
     static constexpr double inf = std::numeric_limits<double>::infinity();