Part: implement Prism as extension

src/Mod/Part/App/AppPart.cpp

@@ -147,6 +147,7 @@
 #include "DatumFeature.h"
 #include "Attacher.h"
 #include "AttachExtension.h"
+#include "PrismExtension.h"
 #include "FaceMaker.h"
 #include "FaceMakerCheese.h"
 #include "FaceMakerBullseye.h"
@@ -346,6 +347,8 @@ PyMOD_INIT_FUNC(Part)
     Part::AttachExtension       ::init();
     Part::AttachExtensionPython ::init();
 
+    Part::PrismExtension        ::init();
+
     Part::Feature               ::init();
     Part::FeatureExt            ::init();
     Part::BodyBase              ::init();

src/Mod/Part/App/CMakeLists.txt

@@ -188,6 +188,8 @@ SET(Features_SRCS
     DatumFeature.h
     AttachExtension.h
     AttachExtension.cpp
+    PrismExtension.cpp
+    PrismExtension.h
 )
 SOURCE_GROUP("Features" FILES ${Features_SRCS})
 

src/Mod/Part/App/PrismExtension.cpp

@@ -0,0 +1,79 @@
+/***************************************************************************
+ *   Copyright (c) 2021 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_
+# include <BRepPrimAPI_MakePrism.hxx>
+#endif
+
+#include "PrismExtension.h"
+#include <Base/Tools.h>
+
+
+using namespace Part;
+
+EXTENSION_PROPERTY_SOURCE(Part::PrismExtension, App::DocumentObjectExtension)
+
+PrismExtension::PrismExtension()
+{
+    EXTENSION_ADD_PROPERTY_TYPE(FirstAngle, (0.0f), "Prism", App::Prop_None, "Angle in first direction");
+    EXTENSION_ADD_PROPERTY_TYPE(SecondAngle, (0.0f), "Prism", App::Prop_None, "Angle in second direction");
+
+    static const App::PropertyQuantityConstraint::Constraints angleConstraint = { -89.99999, 89.99999, 1.0 };
+    FirstAngle.setConstraints(&angleConstraint);
+    SecondAngle.setConstraints(&angleConstraint);
+
+    initExtensionType(PrismExtension::getExtensionClassTypeId());
+}
+
+PrismExtension::~PrismExtension()
+{
+}
+
+short int PrismExtension::extensionMustExecute()
+{
+    if (FirstAngle.isTouched())
+        return 1;
+    if (SecondAngle.isTouched())
+        return 1;
+    return DocumentObjectExtension::extensionMustExecute();
+}
+
+App::DocumentObjectExecReturn *PrismExtension::extensionExecute()
+{
+    return App::DocumentObjectExtension::extensionExecute();
+}
+
+void PrismExtension::extensionOnChanged(const App::Property* prop)
+{
+    App::DocumentObjectExtension::extensionOnChanged(prop);
+}
+
+TopoDS_Shape PrismExtension::makePrism(double height, const TopoDS_Face& face) const
+{
+    // the direction vector for the prism is the height for z and the given angle
+    BRepPrimAPI_MakePrism mkPrism(face,
+        gp_Vec(height * tan(Base::toRadians<double>(FirstAngle.getValue())),
+               height * tan(Base::toRadians<double>(SecondAngle.getValue())),
+               height));
+    return mkPrism.Shape();
+}

src/Mod/Part/App/PrismExtension.h

@@ -0,0 +1,55 @@
+/***************************************************************************
+ *   Copyright (c) 2021 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                                *
+ *                                                                         *
+ ***************************************************************************/
+
+#ifndef PART_PRISM_EXTENSION_H
+#define PART_PRISM_EXTENSION_H
+
+#include <App/DocumentObjectExtension.h>
+#include <App/PropertyUnits.h>
+#include <TopoDS_Face.hxx>
+
+namespace Part
+{
+
+class PartExport PrismExtension : public App::DocumentObjectExtension
+{
+    EXTENSION_PROPERTY_HEADER(Part::PrismExtension);
+public:
+    PrismExtension();
+    virtual ~PrismExtension();
+
+
+    App::PropertyAngle FirstAngle;
+    App::PropertyAngle SecondAngle;
+
+    TopoDS_Shape makePrism(double height, const TopoDS_Face& face) const;
+
+    virtual short int extensionMustExecute(void);
+    virtual App::DocumentObjectExecReturn *extensionExecute(void);
+
+protected:
+    virtual void extensionOnChanged(const App::Property* /*prop*/);
+};
+
+} // namespace Part
+
+#endif // PART_PRISM_EXTENSION_H