diff -r 764381756899 -r 62373840e33a src/ui/objecteditor.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/ui/objecteditor.cpp	Tue Mar 17 23:13:29 2020 +0200
@@ -0,0 +1,32 @@
+#include <QVBoxLayout>
+#include "objecteditor.h"
+
+ObjectEditor::ObjectEditor(Model* model, const ldraw::id_t id, QWidget *parent) :
+	QWidget{parent},
+	model{model}
+{
+	this->setObjectId(id);
+	this->setLayout(new QVBoxLayout{this});
+}
+
+void ObjectEditor::setObjectId(const ldraw::id_t id)
+{
+	this->objectId = id;
+	const ldraw::Object* object = this->model->get(id);
+	if (object != nullptr and object->numPoints() > 0)
+	{
+		if (not this->polygonEditor.has_value())
+		{
+			this->polygonEditor.emplace(this->model, id);
+			this->layout()->addWidget(&*this->polygonEditor);
+		}
+		else
+		{
+			this->polygonEditor->setObjectId(id);
+		}
+	}
+	else
+	{
+		this->polygonEditor.reset();
+	}
+}