SplineUtils::point: pass spline as const

src/Utility/SplineUtils.C

@@ -42,7 +42,7 @@ Vec4 SplineUtils::toVec4 (const Go::Point& X, Real time,
 }
 
 
-void SplineUtils::point (Vec3& X, double u, Go::SplineCurve* curve)
+void SplineUtils::point (Vec3& X, double u, const Go::SplineCurve* curve)
 {
   Go::Point Y;
 #pragma omp critical
@@ -51,7 +51,7 @@ void SplineUtils::point (Vec3& X, double u, Go::SplineCurve* curve)
 }
 
 
-void SplineUtils::point (Vec3& X, double u, double v, Go::SplineSurface* surf)
+void SplineUtils::point (Vec3& X, double u, double v, const Go::SplineSurface* surf)
 {
   Go::Point Y;
 #pragma omp critical
@@ -61,7 +61,7 @@ void SplineUtils::point (Vec3& X, double u, double v, Go::SplineSurface* surf)
 
 
 void SplineUtils::point (Vec3& X, double u, double v, double w,
-                         Go::SplineVolume* vol)
+                         const Go::SplineVolume* vol)
 {
   Go::Point Y;
 #pragma omp critical

src/Utility/SplineUtils.h

@@ -42,11 +42,11 @@ namespace SplineUtils //! Various utility functions on spline objects.
               const double* u = nullptr);
 
   //! \brief Evaluates given spline curve at a parametric point.
-  void point(Vec3& X, double u, Go::SplineCurve* curve);
+  void point(Vec3& X, double u, const Go::SplineCurve* curve);
   //! \brief Evaluates given spline surface at a parametric point.
-  void point(Vec3& X, double u, double v, Go::SplineSurface* surf);
+  void point(Vec3& X, double u, double v, const Go::SplineSurface* surf);
   //! \brief Evaluates given spline colume at a parametric point.
-  void point(Vec3& X, double u, double v, double w, Go::SplineVolume* vol);
+  void point(Vec3& X, double u, double v, double w, const Go::SplineVolume* vol);
 
   //! \brief Establishes matrices with basis functions and 1st derivatives.
   void extractBasis(const Go::BasisDerivsSf& spline,