0032182: Visualization - add Select3D_SensitiveSphere

- created Select3D_SensitiveSphere class
- implemented interfaces for intersection methods
- added tests

src/Select3D/FILES

@@ -29,6 +29,8 @@ Select3D_SensitiveSegment.cxx
 Select3D_SensitiveSegment.hxx
 Select3D_SensitiveSet.cxx
 Select3D_SensitiveSet.hxx
+Select3D_SensitiveSphere.cxx
+Select3D_SensitiveSphere.hxx
 Select3D_SensitiveTriangle.cxx
 Select3D_SensitiveTriangle.hxx
 Select3D_SensitiveTriangulation.cxx

src/Select3D/Select3D_SensitiveSphere.cxx

@@ -0,0 +1,80 @@
+// Created on: 2021-03-04
+// Created by: Maria KRYLOVA
+// Copyright (c) 2021 OPEN CASCADE SAS
+//
+// This file is part of Open CASCADE Technology software library.
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
+// by the Free Software Foundation, with special exception defined in the file
+// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
+// distribution for complete text of the license and disclaimer of any warranty.
+//
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement.
+
+#include <Select3D_SensitiveSphere.hxx>
+
+IMPLEMENT_STANDARD_RTTIEXT(Select3D_SensitiveSphere, Select3D_SensitiveEntity)
+
+// ==================================================
+// Function: Select3D_SensitiveSphere
+// Purpose :
+// ==================================================
+Select3D_SensitiveSphere::Select3D_SensitiveSphere (const Handle(SelectMgr_EntityOwner)& theOwnerId,
+                                                    const gp_Pnt& theCenter,
+                                                    const Standard_Real theRadius)
+: Select3D_SensitiveEntity (theOwnerId),
+  myCenter (theCenter),
+  myRadius (theRadius)
+{
+}
+
+// ==================================================
+// Function: Mathes
+// Purpose :
+// ==================================================
+Standard_Boolean Select3D_SensitiveSphere::Matches (SelectBasics_SelectingVolumeManager& theMgr,
+                                                    SelectBasics_PickResult& thePickResult)
+{
+  if (theMgr.GetActiveSelectionType() != SelectMgr_SelectionType_Point)
+  {
+    if (!theMgr.IsOverlapAllowed())
+    {
+      Standard_Boolean isInside = Standard_True;
+      return theMgr.OverlapsSphere (myCenter, myRadius, &isInside) && isInside;
+    }
+    else
+    {
+      return theMgr.OverlapsSphere (myCenter, myRadius, NULL);
+    }
+  }
+  if (!theMgr.OverlapsSphere (myCenter, myRadius, thePickResult))
+  {
+    return Standard_False;
+  }
+
+  thePickResult.SetDistToGeomCenter (theMgr.DistToGeometryCenter (myCenter));
+  return Standard_True;
+}
+
+// ==================================================
+// Function: GetConnected
+// Purpose :
+// ==================================================
+Handle(Select3D_SensitiveEntity) Select3D_SensitiveSphere::GetConnected()
+{
+  Handle(Select3D_SensitiveEntity) aNewEntity = new Select3D_SensitiveSphere (myOwnerId, myCenter, myRadius);
+  return aNewEntity;
+}
+
+// ==================================================
+// Function: BoundingBox
+// Purpose :
+// ==================================================
+Select3D_BndBox3d Select3D_SensitiveSphere::BoundingBox()
+{
+  const SelectMgr_Vec3 aMinPnt = SelectMgr_Vec3 (myCenter.X() - myRadius, myCenter.Y() - myRadius, myCenter.Z() - myRadius);
+  const SelectMgr_Vec3 aMaxPnt = SelectMgr_Vec3 (myCenter.X() + myRadius, myCenter.Y() + myRadius, myCenter.Z() + myRadius);
+  return Select3D_BndBox3d (aMinPnt, aMaxPnt);
+}

src/Select3D/Select3D_SensitiveSphere.hxx

@@ -0,0 +1,63 @@
+// Created on: 2021-03-04
+// Created by: Maria KRYLOVA
+// Copyright (c) 2021 OPEN CASCADE SAS
+//
+// This file is part of Open CASCADE Technology software library.
+//
+// This library is free software; you can redistribute it and/or modify it under
+// the terms of the GNU Lesser General Public License version 2.1 as published
+// by the Free Software Foundation, with special exception defined in the file
+// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
+// distribution for complete text of the license and disclaimer of any warranty.
+//
+// Alternatively, this file may be used under the terms of Open CASCADE
+// commercial license or contractual agreement.
+
+#ifndef _Select3D_SensitiveSphere_HeaderFile
+#define _Select3D_SensitiveSphere_HeaderFile
+
+#include <Select3D_SensitiveEntity.hxx>
+
+//! A framework to define selection by a sensitive sphere.
+class Select3D_SensitiveSphere : public Select3D_SensitiveEntity
+{
+  DEFINE_STANDARD_RTTIEXT(Select3D_SensitiveSphere, Select3D_SensitiveEntity)
+public:
+
+  //! Constructs a sensitive sphere object defined by the owner theOwnerId,
+  //! the center of the sphere and it's radius.
+  Standard_EXPORT Select3D_SensitiveSphere (const Handle(SelectMgr_EntityOwner)& theOwnerId,
+                                            const gp_Pnt& theCenter,
+                                            const Standard_Real theRadius);
+
+  //! Returns the radius of the sphere
+  Standard_Real Radius() const { return myRadius; }
+
+public:
+
+  //! Checks whether the sphere overlaps current selecting volume
+  Standard_EXPORT virtual Standard_Boolean Matches (SelectBasics_SelectingVolumeManager& theMgr,
+                                                    SelectBasics_PickResult& thePickResult) Standard_OVERRIDE;
+
+  //! Returns the copy of this
+  Standard_EXPORT virtual Handle(Select3D_SensitiveEntity) GetConnected() Standard_OVERRIDE;
+
+  //! Returns bounding box of the sphere.
+  //! If location transformation is set, it will be applied
+  Standard_EXPORT virtual Select3D_BndBox3d BoundingBox() Standard_OVERRIDE;
+
+  //! Always returns Standard_False
+  virtual Standard_Boolean ToBuildBVH() const Standard_OVERRIDE { return Standard_False; }
+
+  //! Returns the amount of points
+  virtual Standard_Integer NbSubElements() const Standard_OVERRIDE { return 1; }
+
+  //! Returns center of the sphere with transformation applied
+  virtual gp_Pnt CenterOfGeometry() const Standard_OVERRIDE { return myCenter; };
+
+protected:
+  gp_Pnt        myCenter;
+  Standard_Real myRadius;
+};
+
+#endif // _Select3D_SensitiveSphere_HeaderFile