Part: expose Precision to Python

src/Mod/Part/App/AppPart.cpp

@@ -147,6 +147,7 @@
 #include <Mod/Part/App/HLRBRep/HLRBRep_PolyAlgoPy.h>
 #include <Mod/Part/App/HLRBRep/PolyHLRToShapePy.h>
 #include <Mod/Part/App/ShapeUpgrade/UnifySameDomainPy.h>
+#include <Mod/Part/App/PrecisionPy.h>
 #include "PropertyGeometryList.h"
 #include "DatumFeature.h"
 #include "Attacher.h"
@@ -289,6 +290,7 @@ PyMOD_INIT_FUNC(Part)
     Base::Interpreter().addType(&Part::GeometryStringExtensionPy ::Type,partModule,"GeometryStringExtension");
     Base::Interpreter().addType(&Part::GeometryBoolExtensionPy ::Type,partModule,"GeometryBoolExtension");
     Base::Interpreter().addType(&Part::GeometryDoubleExtensionPy ::Type,partModule,"GeometryDoubleExtension");
+    Base::Interpreter().addType(&Part::PrecisionPy ::Type,partModule,"Precision");
 
     // BRepFeat package
     PyObject* brepfeatModule(module.getAttr("BRepFeat").ptr());

src/Mod/Part/App/CMakeLists.txt

@@ -92,6 +92,7 @@ generate_from_xml(TopoShapeVertexPy)
 generate_from_xml(TopoShapeWirePy)
 generate_from_xml(BRepOffsetAPI_MakePipeShellPy)
 generate_from_xml(BRepOffsetAPI_MakeFillingPy)
+generate_from_xml(PrecisionPy)
 
 # make sure to create the directory at configure time
 file(MAKE_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}/BRepFeat)
@@ -318,6 +319,8 @@ SET(Python_SRCS
     BRepOffsetAPI_MakePipeShellPyImp.cpp
     BRepOffsetAPI_MakeFillingPy.xml
     BRepOffsetAPI_MakeFillingPyImp.cpp
+    PrecisionPy.xml
+    PrecisionPyImp.cpp
     PartPyCXX.cpp
     PartPyCXX.h
 )

src/Mod/Part/App/PrecisionPy.xml

@@ -0,0 +1,69 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<GenerateModel xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="generateMetaModel_Module.xsd">
+  <PythonExport
+      Father="PyObjectBase"
+      Name="PrecisionPy"
+      PythonName="Part.Precision"
+      Twin="Precision"
+      TwinPointer="Precision"
+      Include="Precision.hxx"
+      Namespace="Part"
+      FatherInclude="Base/PyObjectBase.h"
+      FatherNamespace="Base">
+    <Documentation>
+      <Author Licence="LGPL" Name="Werner Mayer" EMail="wmayer@users.sourceforge.net" />
+      <DeveloperDocu>This is the Type class</DeveloperDocu>
+      <UserDocu>This is the Type class</UserDocu>
+    </Documentation>
+    <Methode Name="angular" Static="true">
+      <Documentation>
+        <UserDocu>Returns the recommended precision value when checking the equality of two angles (given in radians)</UserDocu>
+      </Documentation>
+    </Methode>
+    <Methode Name="confusion" Static="true">
+      <Documentation>
+        <UserDocu>Returns the recommended precision value when checking coincidence of two points in real space</UserDocu>
+      </Documentation>
+    </Methode>
+    <Methode Name="squareConfusion" Static="true">
+      <Documentation>
+        <UserDocu>Returns square of confusion</UserDocu>
+      </Documentation>
+    </Methode>
+    <Methode Name="intersection" Static="true">
+      <Documentation>
+        <UserDocu>Returns the precision value in real space, frequently used by intersection algorithms</UserDocu>
+      </Documentation>
+    </Methode>
+    <Methode Name="approximation" Static="true">
+      <Documentation>
+        <UserDocu>Returns the precision value in real space, frequently used by approximation algorithms</UserDocu>
+      </Documentation>
+    </Methode>
+    <Methode Name="parametric" Static="true">
+      <Documentation>
+        <UserDocu>Convert a real space precision to a parametric space precision</UserDocu>
+      </Documentation>
+    </Methode>
+    <Methode Name="isInfinite" Static="true">
+      <Documentation>
+        <UserDocu>Returns True if R may be considered as an infinite number</UserDocu>
+      </Documentation>
+    </Methode>
+    <Methode Name="isPositiveInfinite" Static="true">
+      <Documentation>
+        <UserDocu>Returns True if R may  be considered as a positive infinite number</UserDocu>
+      </Documentation>
+    </Methode>
+    <Methode Name="isNegativeInfinite" Static="true">
+      <Documentation>
+        <UserDocu>Returns True if R may  be considered as a negative infinite number</UserDocu>
+      </Documentation>
+    </Methode>
+    <Methode Name="infinite" Static="true">
+      <Documentation>
+        <UserDocu>Returns a  big number that  can  be  considered as infinite</UserDocu>
+      </Documentation>
+    </Methode>
+  </PythonExport>
+</GenerateModel>

src/Mod/Part/App/PrecisionPyImp.cpp

@@ -0,0 +1,133 @@
+/***************************************************************************
+ *   Copyright (c) 2022 Werner Mayer <wmayer[at]users.sourceforge.net>     *
+ *                                                                         *
+ *   This file is part of the FreeCAD CAx development system.              *
+ *                                                                         *
+ *   This library is free software; you can redistribute it and/or         *
+ *   modify it under the terms of the GNU Library General Public           *
+ *   License as published by the Free Software Foundation; either          *
+ *   version 2 of the License, or (at your option) any later version.      *
+ *                                                                         *
+ *   This library  is distributed in the hope that it will be useful,      *
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
+ *   GNU Library General Public License for more details.                  *
+ *                                                                         *
+ *   You should have received a copy of the GNU Library General Public     *
+ *   License along with this library; see the file COPYING.LIB. If not,    *
+ *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
+ *   Suite 330, Boston, MA  02111-1307, USA                                *
+ *                                                                         *
+ ***************************************************************************/
+
+
+#include "PreCompiled.h"
+#ifndef _PreComp_
+#endif
+
+#include "PrecisionPy.h"
+#include "PrecisionPy.cpp"
+
+using namespace Part;
+
+
+// returns a string which represents the object e.g. when printed in python
+std::string PrecisionPy::representation() const
+{
+    return std::string("<Precision object>");
+}
+
+PyObject* PrecisionPy::angular(PyObject * /*args*/)
+{
+    Py::Float v(Precision::Angular());
+    return Py::new_reference_to(v);
+}
+
+PyObject* PrecisionPy::confusion(PyObject * /*args*/)
+{
+    Py::Float v(Precision::Confusion());
+    return Py::new_reference_to(v);
+}
+
+PyObject* PrecisionPy::squareConfusion(PyObject * /*args*/)
+{
+    Py::Float v(Precision::SquareConfusion());
+    return Py::new_reference_to(v);
+}
+
+PyObject* PrecisionPy::intersection(PyObject * /*args*/)
+{
+    Py::Float v(Precision::Intersection());
+    return Py::new_reference_to(v);
+}
+
+PyObject* PrecisionPy::approximation(PyObject * /*args*/)
+{
+    Py::Float v(Precision::Approximation());
+    return Py::new_reference_to(v);
+}
+
+PyObject* PrecisionPy::parametric(PyObject *args)
+{
+    double p;
+    if (PyArg_ParseTuple(args, "d", &p)) {
+        Py::Float v(Precision::Parametric(p));
+        return Py::new_reference_to(v);
+    }
+
+    PyErr_Clear();
+    double t;
+    if (PyArg_ParseTuple(args, "dd", &p, &t)) {
+        Py::Float v(Precision::Parametric(p, t));
+        return Py::new_reference_to(v);
+    }
+
+    PyErr_SetString(PyExc_ValueError, "one or two floats expected");
+    return nullptr;
+}
+
+PyObject* PrecisionPy::isInfinite(PyObject *args)
+{
+    double v;
+    if (!PyArg_ParseTuple(args, "d", &v))
+        return nullptr;
+
+    Py::Boolean b(Precision::IsInfinite(v));
+    return Py::new_reference_to(b);
+}
+
+PyObject* PrecisionPy::isPositiveInfinite(PyObject *args)
+{
+    double v;
+    if (!PyArg_ParseTuple(args, "d", &v))
+        return nullptr;
+
+    Py::Boolean b(Precision::IsPositiveInfinite(v));
+    return Py::new_reference_to(b);
+}
+
+PyObject* PrecisionPy::isNegativeInfinite(PyObject *args)
+{
+    double v;
+    if (!PyArg_ParseTuple(args, "d", &v))
+        return nullptr;
+
+    Py::Boolean b(Precision::IsNegativeInfinite(v));
+    return Py::new_reference_to(b);
+}
+
+PyObject* PrecisionPy::infinite(PyObject * /*args*/)
+{
+    Py::Float v(Precision::Infinite());
+    return Py::new_reference_to(v);
+}
+
+PyObject *PrecisionPy::getCustomAttributes(const char* /*attr*/) const
+{
+    return nullptr;
+}
+
+int PrecisionPy::setCustomAttributes(const char* /*attr*/, PyObject* /*obj*/)
+{
+    return 0;
+}