Sketch: expose several methods to Python

* expose detectDegeneratedGeometries to Python
* expose removeDegeneratedGeometries to Python
* expose delConstraintsToExternal to Python
* expose evaluateConstraints to Python
* expose validateConstraints to Python

src/Mod/Sketcher/App/SketchObjectPy.xml

@@ -94,6 +94,38 @@ deleteAllGeometry()
             </UserDocu>
         </Documentation>
     </Methode>
+    <Methode Name="detectDegeneratedGeometries">
+        <Documentation>
+            <UserDocu>
+Detect degenerated geometries. A curve geometry is considered degenerated
+if the parameter range is less than the tolerance.
+
+detectDegeneratedGeometries(tolerance:float)
+
+    Args:
+        tolerance: The tolerance to check the parameter range of a curve.
+
+    Returns:
+        The number of degenerated geometries.
+            </UserDocu>
+        </Documentation>
+    </Methode>
+    <Methode Name="removeDegeneratedGeometries">
+        <Documentation>
+            <UserDocu>
+Remove degenerated geometries. A curve geometry is considered degenerated
+if the parameter range is less than the tolerance.
+
+removeDegeneratedGeometries(tolerance:float)
+
+    Args:
+        tolerance: The tolerance to check the parameter range of a curve.
+
+    Returns:
+        The number of degenerated geometries.
+            </UserDocu>
+        </Documentation>
+    </Methode>
     <Methode Name="deleteAllConstraints">
         <Documentation>
             <UserDocu>
@@ -263,6 +295,11 @@ delConstraintOnPoint(geoId:int, pointPos:int)
         </UserDocu>
       </Documentation>
     </Methode>
+    <Methode Name="delConstraintsToExternal" NoArgs="true">
+      <Documentation>
+        <UserDocu>Deletes all constraints referencing an external geometry.</UserDocu>
+      </Documentation>
+    </Methode>
     <Methode Name="setDatum">
       <Documentation>
         <UserDocu>
@@ -720,6 +757,20 @@ setLabelDistance(constraintIndex:int, value:float)
             </UserDocu>
         </Documentation>
     </Methode>
+    <Methode Name="evaluateConstraints" Const="true" NoArgs="true">
+        <Documentation>
+            <UserDocu>
+                Check for constraints with invalid indexes. Returns True if invalid constraints are found, False otherwise.
+            </UserDocu>
+        </Documentation>
+    </Methode>
+    <Methode Name="validateConstraints" NoArgs="true">
+        <Documentation>
+            <UserDocu>
+                Removes constraints with invalid indexes.
+            </UserDocu>
+        </Documentation>
+    </Methode>
     <Methode Name="autoRemoveRedundants">
         <Documentation>
             <UserDocu>

src/Mod/Sketcher/App/SketchObjectPyImp.cpp

@@ -46,6 +46,7 @@
 // other python types
 #include "ConstraintPy.h"
 #include "GeometryFacadePy.h"
+#include "SketchAnalysis.h"
 
 
 using namespace Sketcher;
@@ -260,6 +261,30 @@ PyObject* SketchObjectPy::deleteAllGeometry(PyObject* args)
     Py_Return;
 }
 
+PyObject* SketchObjectPy::detectDegeneratedGeometries(PyObject* args)
+{
+    double tolerance {};
+    if (!PyArg_ParseTuple(args, "d", &tolerance)) {
+        return nullptr;
+    }
+
+    SketchAnalysis analyse(this->getSketchObjectPtr());
+    int count = analyse.detectDegeneratedGeometries(tolerance);
+    return Py::new_reference_to(Py::Long(count));
+}
+
+PyObject* SketchObjectPy::removeDegeneratedGeometries(PyObject* args)
+{
+    double tolerance {};
+    if (!PyArg_ParseTuple(args, "d", &tolerance)) {
+        return nullptr;
+    }
+
+    SketchAnalysis analyse(this->getSketchObjectPtr());
+    int count = analyse.removeDegeneratedGeometries(tolerance);
+    return Py::new_reference_to(Py::Long(count));
+}
+
 PyObject* SketchObjectPy::deleteAllConstraints(PyObject* args)
 {
     if (!PyArg_ParseTuple(args, "")) {
@@ -617,6 +642,12 @@ PyObject* SketchObjectPy::delConstraintOnPoint(PyObject* args)
     Py_Return;
 }
 
+PyObject* SketchObjectPy::delConstraintsToExternal()
+{
+    this->getSketchObjectPtr()->delConstraintsToExternal();
+    Py_Return;
+}
+
 PyObject* SketchObjectPy::setDatum(PyObject* args)
 {
     double Datum;
@@ -1941,6 +1972,18 @@ PyObject* SketchObjectPy::makeMissingEquality(PyObject* args)
     Py_Return;
 }
 
+PyObject* SketchObjectPy::evaluateConstraints()
+{
+    bool ok = this->getSketchObjectPtr()->evaluateConstraints();
+    return Py::new_reference_to(Py::Boolean(ok));
+}
+
+PyObject* SketchObjectPy::validateConstraints()
+{
+    this->getSketchObjectPtr()->validateConstraints();
+    Py_Return;
+}
+
 PyObject* SketchObjectPy::autoRemoveRedundants(PyObject* args)
 {
     PyObject* updategeo = Py_True;