From e9d988d43cbeec22d0cc52c60c2e5781b58db8fa Mon Sep 17 00:00:00 2001
From: wandererfan <wandererfan@gmail.com>
Date: Wed, 19 Oct 2022 14:39:21 -0400
Subject: [PATCH] [TD]expose DVP projectPoint to Python

---
 src/Mod/TechDraw/App/DrawViewPartPy.xml    | 10 +++++++++-
 src/Mod/TechDraw/App/DrawViewPartPyImp.cpp | 14 ++++++++++++++
 2 files changed, 23 insertions(+), 1 deletion(-)

diff --git a/src/Mod/TechDraw/App/DrawViewPartPy.xml b/src/Mod/TechDraw/App/DrawViewPartPy.xml
index 52645d1ad9..e0fd128a37 100644
--- a/src/Mod/TechDraw/App/DrawViewPartPy.xml
+++ b/src/Mod/TechDraw/App/DrawViewPartPy.xml
@@ -148,7 +148,15 @@
         <UserDocu>getVertexBySelection(vertexName). Returns Part.TopoShape.</UserDocu>
       </Documentation>
     </Methode>
-    <Methode Name="requestPaint">
+    <Methode Name="projectPoint">
+      <Documentation>
+        <UserDocu>projectPoint(vector3d point, [bool invert]). Returns the projection of point in the
+        projection coordinate system of this DrawViewPart. Optionally inverts the Y coordinate of the
+        result.</UserDocu>
+      </Documentation>
+    </Methode>
+
+<Methode Name="requestPaint">
       <Documentation>
         <UserDocu>requestPaint(). Redraw the graphic for this View.</UserDocu>
       </Documentation>
diff --git a/src/Mod/TechDraw/App/DrawViewPartPyImp.cpp b/src/Mod/TechDraw/App/DrawViewPartPyImp.cpp
index cb9c9977fd..30d4469810 100644
--- a/src/Mod/TechDraw/App/DrawViewPartPyImp.cpp
+++ b/src/Mod/TechDraw/App/DrawViewPartPyImp.cpp
@@ -709,6 +709,20 @@ PyObject* DrawViewPartPy::getVertexBySelection(PyObject *args)
     return new Part::TopoShapeVertexPy(new Part::TopoShape(outVertex));
 }
 
+PyObject* DrawViewPartPy::projectPoint(PyObject *args)
+{
+    PyObject* pPoint = nullptr;
+    PyObject* pInvert = Py_False;
+    if (!PyArg_ParseTuple(args, "O!|O!", &(Base::VectorPy::Type), &pPoint, &PyBool_Type, &pInvert)) {
+        throw Py::TypeError("expected (vector)");
+    }
+
+    bool invert = Base::asBoolean(pInvert);
+
+    DrawViewPart* dvp = getDrawViewPartPtr();
+    Base::Vector3d projection = dvp->projectPoint(static_cast<Base::VectorPy*>(pPoint)->value(), invert);
+    return new Base::VectorPy(new Base::Vector3d(projection));
+}
 
 //==============================================================================
 PyObject *DrawViewPartPy::getCustomAttributes(const char* /*attr*/) const