From: sshutina <svetlana.shutina@opencascade.com>
Date: Wed, 23 Jul 2025 14:14:46 +0000 (+0100)
Subject: Add API to get vertex by index from sensitive
X-Git-Url: http://git.dev.opencascade.org/gitweb/?a=commitdiff_plain;h=f0a4b37b5d15234f0d6d58f0dee245d0eec0eb80;p=occt.git

Add API to get vertex by index from sensitive
---

diff --git a/src/Select3D/Select3D_SensitivePrimitiveArray.cxx b/src/Select3D/Select3D_SensitivePrimitiveArray.cxx
index 8c0d0d3fdc..3a4956283c 100644
--- a/src/Select3D/Select3D_SensitivePrimitiveArray.cxx
+++ b/src/Select3D/Select3D_SensitivePrimitiveArray.cxx
@@ -395,6 +395,23 @@ bool Select3D_SensitivePrimitiveArray::InitTriangulation (const Handle(Graphic3d
   return true;
 }
 
+// =======================================================================
+// function : GetVertex
+// purpose  :
+// =======================================================================
+std::vector<Graphic3d_Vec3> Select3D_SensitivePrimitiveArray::GetVertex (const Standard_Integer theIndex) const
+{
+  std::vector<Graphic3d_Vec3> aVertices;
+  aVertices.reserve(3);
+  Graphic3d_Vec3i aTriNodes;
+  const Standard_Integer anIndexOffset = theIndex * 3;
+  getTriIndices(myIndices, anIndexOffset, aTriNodes);
+  aVertices.push_back (getPosVec3(aTriNodes[0]));
+  aVertices.push_back (getPosVec3(aTriNodes[1]));
+  aVertices.push_back (getPosVec3(aTriNodes[2]));
+  return aVertices;
+}
+
 // =======================================================================
 // function : InitPoints
 // purpose  :
diff --git a/src/Select3D/Select3D_SensitivePrimitiveArray.hxx b/src/Select3D/Select3D_SensitivePrimitiveArray.hxx
index 28002d8ecb..2f409c17b4 100644
--- a/src/Select3D/Select3D_SensitivePrimitiveArray.hxx
+++ b/src/Select3D/Select3D_SensitivePrimitiveArray.hxx
@@ -195,6 +195,9 @@ public:
   //! Return the second node of last topmost detected edge or -1 if undefined (axis picking).
   Standard_Integer LastDetectedEdgeNode2() const { return myDetectedEdgeNode2; }
 
+  //! Return vertex by index.
+  Standard_EXPORT std::vector<Graphic3d_Vec3> GetVertex (const Standard_Integer theIndex) const;
+
   //! Dumps the content of me into the stream
   Standard_EXPORT virtual void DumpJson (Standard_OStream& theOStream, Standard_Integer theDepth = -1) const Standard_OVERRIDE;