From c276139f192a51bd9c57a911e1d70f1398e69d01 Mon Sep 17 00:00:00 2001
From: wmayer <wmayer@users.sourceforge.net>
Date: Sat, 19 Dec 2020 16:07:00 +0100
Subject: [PATCH] Part: [skip ci] add TopoShape::isInfinite

---
 src/Mod/Part/App/TopoShape.cpp      | 27 +++++++++++++++++++++++++++
 src/Mod/Part/App/TopoShape.h        |  2 ++
 src/Mod/Part/App/TopoShapePy.xml    |  5 +++++
 src/Mod/Part/App/TopoShapePyImp.cpp | 11 +++++++++++
 4 files changed, 45 insertions(+)

diff --git a/src/Mod/Part/App/TopoShape.cpp b/src/Mod/Part/App/TopoShape.cpp
index 3246fbe4b5..32d817cd82 100644
--- a/src/Mod/Part/App/TopoShape.cpp
+++ b/src/Mod/Part/App/TopoShape.cpp
@@ -4206,6 +4206,33 @@ bool TopoShape::findPlane(gp_Pln &pln, double tol) const {
     }
 }
 
+bool TopoShape::isInfinite() const
+{
+    if (_Shape.IsNull())
+        return false;
+
+    try {
+        // If the shape is empty an exception may be thrown
+        Bnd_Box bounds;
+        BRepBndLib::Add(_Shape, bounds);
+        bounds.SetGap(0.0);
+        Standard_Real xMin, yMin, zMin, xMax, yMax, zMax;
+        bounds.Get(xMin, yMin, zMin, xMax, yMax, zMax);
+
+        if (Precision::IsInfinite(xMax - xMin))
+            return true;
+        if (Precision::IsInfinite(yMax - yMin))
+            return true;
+        if (Precision::IsInfinite(zMax - zMin))
+            return true;
+
+        return false;
+    }
+    catch (Standard_Failure&) {
+        return false;
+    }
+}
+
 bool TopoShape::isCoplanar(const TopoShape &other, double tol) const {
     if(isNull() || other.isNull())
         return false;
diff --git a/src/Mod/Part/App/TopoShape.h b/src/Mod/Part/App/TopoShape.h
index 96ccb0df9f..2ef6027191 100644
--- a/src/Mod/Part/App/TopoShape.h
+++ b/src/Mod/Part/App/TopoShape.h
@@ -198,6 +198,8 @@ public:
     bool isClosed() const;
     bool isCoplanar(const TopoShape &other, double tol=-1) const;
     bool findPlane(gp_Pln &pln, double tol=-1) const;
+    /// Returns true if the expansion of the shape is infinite, false otherwise
+    bool isInfinite() const;
     //@}
 
     /** @name Boolean operation*/
diff --git a/src/Mod/Part/App/TopoShapePy.xml b/src/Mod/Part/App/TopoShapePy.xml
index f0924ebc59..f50d37e9c1 100644
--- a/src/Mod/Part/App/TopoShapePy.xml
+++ b/src/Mod/Part/App/TopoShapePy.xml
@@ -552,6 +552,11 @@ If the shape is an edge it returns True if its vertices are the same.
         <UserDocu>isCoplanar(shape,tol=None) -- Checks if this shape is coplanar with the given shape.</UserDocu>
       </Documentation>
     </Methode>
+    <Methode Name="isInfinite" Const="true">
+      <Documentation>
+        <UserDocu>isInfinite() -- Checks if this shape has an infinite expansion.</UserDocu>
+      </Documentation>
+    </Methode>
     <Methode Name="findPlane" Const="true">
       <Documentation>
           <UserDocu>findPlane(tol=None) -- return a plane if the shape is planar</UserDocu>
diff --git a/src/Mod/Part/App/TopoShapePyImp.cpp b/src/Mod/Part/App/TopoShapePyImp.cpp
index 4d5f69718b..4b4870ca06 100644
--- a/src/Mod/Part/App/TopoShapePyImp.cpp
+++ b/src/Mod/Part/App/TopoShapePyImp.cpp
@@ -1896,6 +1896,17 @@ PyObject*  TopoShapePy::isCoplanar(PyObject *args)
     }PY_CATCH_OCC
 }
 
+PyObject*  TopoShapePy::isInfinite(PyObject *args)
+{
+    if (!PyArg_ParseTuple(args, ""))
+        return nullptr;
+
+    PY_TRY {
+        return Py::new_reference_to(Py::Boolean(getTopoShapePtr()->isInfinite()));
+    }
+    PY_CATCH_OCC
+}
+
 PyObject*  TopoShapePy::findPlane(PyObject *args)
 {
     double tol = -1;