diff -r 03f8e6d42e13 -r 2f79053c2e9a src/modeleditcontext.cpp
--- a/src/modeleditcontext.cpp	Fri Mar 04 11:37:50 2022 +0200
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,85 +0,0 @@
-/*
- *  LDForge: LDraw parts authoring CAD
- *  Copyright (C) 2013 - 2020 Teemu Piippo
- *
- *  This program is free software: you can redistribute it and/or modify
- *  it under the terms of the GNU General Public License as published by
- *  the Free Software Foundation, either version 3 of the License, or
- *  (at your option) any later version.
- *
- *  This program 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 General Public License for more details.
- *
- *  You should have received a copy of the GNU General Public License
- *  along with this program.  If not, see <http://www.gnu.org/licenses/>.
- */
-
-#include "modeleditcontext.h"
-#include "linetypes/triangle.h"
-#include "linetypes/quadrilateral.h"
-
-ModelEditor::ModelEditor(Model& model) :
-	storedModel{model}
-{
-}
-
-ModelEditor::~ModelEditor()
-{
-	for (ldraw::id_t id : this->modifiedObjects)
-	{
-		const QModelIndex index = this->model().find(id);
-		if (index.isValid())
-		{
-			Q_EMIT this->objectModified(index.row());
-		}
-	}
-}
-
-ldraw::id_t ModelEditor::append(std::unique_ptr<ldraw::Object>&& object)
-{
-	this->storedModel.append(std::move(object));
-	Q_EMIT this->objectAdded(this->model().size() - 1);
-	return object->id;
-}
-
-void ModelEditor::remove(int position)
-{
-	this->storedModel.remove(position);
-}
-
-auto ModelEditor::setObjectProperty(
-	const ldraw::id_t id,
-	const ldraw::Property property,
-	const QVariant& value)
-	-> ldraw::Object::SetPropertyResult
-{
-	ldraw::Object* const object = this->storedModel.findObjectById(id);
-	if (object != nullptr)
-	{
-		const ldraw::Object::SetPropertyResult result = object->setProperty(ldraw::PropertyKeyValue{property, value});
-		modifiedObjects.insert(id);
-		return result;
-	}
-	else
-	{
-		return ldraw::Object::SetPropertyResult::PropertyNotHandled;
-	}
-}
-
-void ModelEditor::setObjectPoint(ldraw::id_t id, int pointId, const glm::vec3& value)
-{
-	ldraw::Object* object = this->storedModel.findObjectById(id);
-	if (object != nullptr)
-	{
-		object->setProperty(ldraw::PropertyKeyValue{ldraw::pointProperty(pointId), QVariant::fromValue(value)});
-		modifiedObjects.insert(id);
-	}
-}
-
-const Model &ModelEditor::model()
-{
-	return this->storedModel;
-}
-