From e16b9f47afe7f95234e3fcfd06b2fb46c98a9346 Mon Sep 17 00:00:00 2001
From: Abdullah Tahiri <abdullah.tahiri.yo@gmail.com>
Date: Wed, 10 Nov 2021 18:44:27 +0100
Subject: [PATCH] Part: Geometry - Curve member to calculate the normal at
 Point

==============================================================

Convenience member function combining closestParameter and normalAt using parameter.
---
 src/Mod/Part/App/Geometry.cpp | 8 ++++++++
 src/Mod/Part/App/Geometry.h   | 1 +
 2 files changed, 9 insertions(+)

diff --git a/src/Mod/Part/App/Geometry.cpp b/src/Mod/Part/App/Geometry.cpp
index bc26e1f52b..fdcc29a688 100644
--- a/src/Mod/Part/App/Geometry.cpp
+++ b/src/Mod/Part/App/Geometry.cpp
@@ -698,6 +698,14 @@ bool GeomCurve::normalAt(double u, Base::Vector3d& dir) const
     return false;
 }
 
+bool GeomCurve::normalAt(const Base::Vector3d & curvepoint, Base::Vector3d & dir) const
+{
+    double u;
+    closestParameter(curvepoint, u);
+
+    return normalAt(u, dir);
+}
+
 bool GeomCurve::intersect(  const GeomCurve *c,
                             std::vector<std::pair<Base::Vector3d, Base::Vector3d>>& points,
                             double tol) const
diff --git a/src/Mod/Part/App/Geometry.h b/src/Mod/Part/App/Geometry.h
index 1dd2210dee..467f6b8a5d 100644
--- a/src/Mod/Part/App/Geometry.h
+++ b/src/Mod/Part/App/Geometry.h
@@ -197,6 +197,7 @@ public:
     double curvatureAt(double u) const;
     double length(double u, double v) const;
     bool normalAt(double u, Base::Vector3d& dir) const;
+    bool normalAt(const Base::Vector3d & curvepoint, Base::Vector3d& dir) const;
     bool intersect(const GeomCurve *c,
                    std::vector<std::pair<Base::Vector3d, Base::Vector3d>>& points,
                    double tol = Precision::Confusion()) const;