# HG changeset patch
# User Teemu Piippo <teemu@hecknology.net>
# Date 1632229215 -10800
# Node ID 488d0ba6070b6959bcefd7a6671b456cd6f2dee3
# Parent  e2080ac440398213aa7c6d708c3b4ab873b30dbc
Begin work with serialization

diff -r e2080ac44039 -r 488d0ba6070b src/colors.cpp
--- a/src/colors.cpp	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/colors.cpp	Tue Sep 21 16:00:15 2021 +0300
@@ -127,3 +127,13 @@
 		return colorTable[color].faceColor;
 	}
 }
+
+QDataStream& operator<<(QDataStream& stream, ldraw::Color color)
+{
+	return stream << color.index;
+}
+
+QDataStream& operator>>(QDataStream& stream, ldraw::Color& color)
+{
+	return stream >> color.index;
+}
diff -r e2080ac44039 -r 488d0ba6070b src/colors.h
--- a/src/colors.h	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/colors.h	Tue Sep 21 16:00:15 2021 +0300
@@ -105,3 +105,5 @@
 }
 
 double luma(const QColor& color);
+QDataStream& operator<<(QDataStream&, ldraw::Color);
+QDataStream& operator>>(QDataStream&, ldraw::Color&);
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/comment.cpp
--- a/src/linetypes/comment.cpp	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/comment.cpp	Tue Sep 21 16:00:15 2021 +0300
@@ -7,3 +7,8 @@
 	font.setItalic(true);
 	return font;
 }
+
+ldraw::Object::Type ldraw::Comment::typeIdentifier() const
+{
+	return Type::Comment;
+}
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/comment.h
--- a/src/linetypes/comment.h	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/comment.h	Tue Sep 21 16:00:15 2021 +0300
@@ -11,4 +11,5 @@
 {
 	using MetaCommand::MetaCommand;
 	QFont textRepresentationFont() const override;
+	Type typeIdentifier() const override;
 };
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/conditionaledge.cpp
--- a/src/linetypes/conditionaledge.cpp	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/conditionaledge.cpp	Tue Sep 21 16:00:15 2021 +0300
@@ -6,5 +6,10 @@
 		utility::vertexToStringParens(this->points[0]),
 		utility::vertexToStringParens(this->points[1]),
 		utility::vertexToStringParens(this->points[2]),
-		utility::vertexToStringParens(this->points[3]));
+			utility::vertexToStringParens(this->points[3]));
 }
+
+ldraw::Object::Type ldraw::ConditionalEdge::typeIdentifier() const
+{
+	return Type::ConditionalEdge;
+}
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/conditionaledge.h
--- a/src/linetypes/conditionaledge.h	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/conditionaledge.h	Tue Sep 21 16:00:15 2021 +0300
@@ -11,4 +11,5 @@
 public:
 	using PolygonObject<4>::PolygonObject;
 	QString textRepresentation() const override;
+	Type typeIdentifier() const override;
 };
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/edge.cpp
--- a/src/linetypes/edge.cpp	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/edge.cpp	Tue Sep 21 16:00:15 2021 +0300
@@ -15,3 +15,8 @@
 	Q_UNUSED(context)
 	polygons.push_back(gl::edgeLine(this->points[0], this->points[1], this->colorIndex, this->id));
 }
+
+ldraw::Object::Type ldraw::Edge::typeIdentifier() const
+{
+	return Type::EdgeLine;
+}
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/edge.h
--- a/src/linetypes/edge.h	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/edge.h	Tue Sep 21 16:00:15 2021 +0300
@@ -12,4 +12,5 @@
 	using PolygonObject::PolygonObject;
 	QString textRepresentation() const override;
 	void getPolygons(std::vector<gl::Polygon>& polygons, GetPolygonsContext* context) const override;
+	Type typeIdentifier() const override;
 };
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/errorline.cpp
--- a/src/linetypes/errorline.cpp	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/errorline.cpp	Tue Sep 21 16:00:15 2021 +0300
@@ -41,3 +41,8 @@
 {
 	return QBrush{Qt::red};
 }
+
+ldraw::Object::Type ldraw::ErrorLine::typeIdentifier() const
+{
+	return Type::ErrorLine;
+}
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/errorline.h
--- a/src/linetypes/errorline.h	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/errorline.h	Tue Sep 21 16:00:15 2021 +0300
@@ -15,6 +15,7 @@
 	QString textRepresentation() const override;
 	QBrush textRepresentationForeground() const override;
 	QBrush textRepresentationBackground() const override;
+	Type typeIdentifier() const override;
 	QString text;
 	QString message;
 protected:
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/metacommand.cpp
--- a/src/linetypes/metacommand.cpp	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/metacommand.cpp	Tue Sep 21 16:00:15 2021 +0300
@@ -26,3 +26,8 @@
 	return this->storedText;
 }
 
+ldraw::Object::Type ldraw::MetaCommand::typeIdentifier() const
+{
+	return Type::MetaCommand;
+}
+
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/metacommand.h
--- a/src/linetypes/metacommand.h	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/metacommand.h	Tue Sep 21 16:00:15 2021 +0300
@@ -14,6 +14,7 @@
 	QVariant getProperty(Property property) const override;
 	QString textRepresentation() const override;
 	QString storedText = "";
+	Type typeIdentifier() const override;
 protected:
 	void setProperty(SetPropertyResult* result, const PropertyKeyValue& pair) override;
 };
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/object.cpp
--- a/src/linetypes/object.cpp	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/object.cpp	Tue Sep 21 16:00:15 2021 +0300
@@ -74,6 +74,27 @@
 	throw BadPointIndex{};
 }
 
+/**
+ * @brief Serializes the object into a stream of bytes for internal storage.
+ * @param stream Data stream to serialize into
+ */
+QDataStream& ldraw::Object::serialize(QDataStream &stream) const
+{
+	return stream << static_cast<int>(this->typeIdentifier());
+}
+
+/**
+ * @brief Deserializes the object from a stream of bytes coming from internal storage.
+ * @param stream Data stream to serialize from.
+ * @note @c ldraw::Object::serialize will insert a type enumerator. Before calling this function,
+ * this enumerator is assumed to have been handled as the object class needs to be initialized based
+ * on the value of this enumerator.
+ */
+QDataStream& ldraw::Object::deserialize(QDataStream &stream)
+{
+	return stream;
+}
+
 ldraw::ColoredObject::ColoredObject(const Color color_index) :
 	colorIndex{color_index}
 {
@@ -101,7 +122,32 @@
 	Object::setProperty(result, pair);
 }
 
+/**
+ * @brief @overload @c ldraw::Object::serialize
+ * @param stream
+ * @return stream
+ */
+QDataStream& ldraw::ColoredObject::serialize(QDataStream& stream) const
+{
+	return Object::serialize(stream) << this->colorIndex;
+}
+
+/**
+ * @brief @overload @c ldraw::Object::deserialize
+ * @param stream
+ * @return stream
+ */
+QDataStream& ldraw::ColoredObject::deserialize(QDataStream& stream)
+{
+	return Object::serialize(stream) >> this->colorIndex;
+}
+
 QString ldraw::Empty::textRepresentation() const
 {
 	return "";
 }
+
+ldraw::Object::Type ldraw::Empty::typeIdentifier() const
+{
+	return Type::Empty;
+}
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/object.h
--- a/src/linetypes/object.h	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/object.h	Tue Sep 21 16:00:15 2021 +0300
@@ -33,6 +33,21 @@
 		Success = 0,
 		PropertyNotHandled
 	};
+	/**
+	 * @brief Enumerates different object types
+	 */
+	enum class Type
+	{
+		Empty,
+		Comment,
+		MetaCommand,
+		ErrorLine,
+		SubfileReference,
+		EdgeLine,
+		ConditionalEdge,
+		Triangle,
+		Quadrilateral,
+	};
 	friend bool handled(SetPropertyResult result)
 	{
 		return result == SetPropertyResult::Success;
@@ -57,6 +72,10 @@
 	virtual void invert() {}
 	virtual int numPoints() const { return 0; }
 	virtual const glm::vec3& getPoint(int index) const;
+	virtual QDataStream& serialize(QDataStream& stream) const;
+	virtual QDataStream& deserialize(QDataStream& stream);
+	virtual Type typeIdentifier() const = 0;
+
 protected:
 	template<Property property, typename Function>
 	void handle(SetPropertyResult* result, const PropertyKeyValue& pair, Function function);
@@ -87,6 +106,8 @@
 	ColoredObject(const Color colorIndex = ldraw::mainColor);
 	bool hasColor() const override final;
 	QVariant getProperty(Property id) const override;
+	QDataStream &serialize(QDataStream& stream) const override;
+	QDataStream& deserialize(QDataStream& stream) override;
 	Color colorIndex = ldraw::mainColor;
 protected:
 	void setProperty(SetPropertyResult* result, const PropertyKeyValue& pair) override;
@@ -98,4 +119,5 @@
 class ldraw::Empty : public Object
 {
 	QString textRepresentation() const override;
+	Type typeIdentifier() const override;
 };
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/polygonobject.h
--- a/src/linetypes/polygonobject.h	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/polygonobject.h	Tue Sep 21 16:00:15 2021 +0300
@@ -66,5 +66,22 @@
 		}
 		ColoredObject::setProperty(result, pair);
 	}
+	QDataStream &serialize(QDataStream& stream) const override
+	{
+		for (const glm::vec3& point : this->points)
+		{
+			stream << point;
+		}
+		return stream;
+	}
+	QDataStream& deserialize(QDataStream& stream) override
+	{
+		for (glm::vec3& point : this->points)
+		{
+			stream >> point;
+		}
+		return stream;
+	}
+protected:
 	std::array<glm::vec3, N> points;
 };
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/quadrilateral.cpp
--- a/src/linetypes/quadrilateral.cpp	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/quadrilateral.cpp	Tue Sep 21 16:00:15 2021 +0300
@@ -29,3 +29,8 @@
 	// -> 2 1 0 3
 	std::swap(this->points[0], this->points[2]);
 }
+
+ldraw::Object::Type ldraw::Quadrilateral::typeIdentifier() const
+{
+	return Type::Quadrilateral;
+}
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/quadrilateral.h
--- a/src/linetypes/quadrilateral.h	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/quadrilateral.h	Tue Sep 21 16:00:15 2021 +0300
@@ -13,4 +13,5 @@
 	QString textRepresentation() const override;
 	void getPolygons(std::vector<gl::Polygon>& polygons, GetPolygonsContext* context) const override;
 	void invert() override;
+	Type typeIdentifier() const override;
 };
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/subfilereference.cpp
--- a/src/linetypes/subfilereference.cpp	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/subfilereference.cpp	Tue Sep 21 16:00:15 2021 +0300
@@ -87,3 +87,18 @@
 {
 	return documents->findModelByName(this->referenceName);
 }
+
+ldraw::Object::Type ldraw::SubfileReference::typeIdentifier() const
+{
+	return Type::SubfileReference;
+}
+
+QDataStream& ldraw::SubfileReference::serialize(QDataStream &stream) const
+{
+	return stream << this->transformation << this->referenceName << this->isInverted;
+}
+
+QDataStream& ldraw::SubfileReference::deserialize(QDataStream &stream)
+{
+	return stream >> this->transformation >> this->referenceName >> this->isInverted;
+}
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/subfilereference.h
--- a/src/linetypes/subfilereference.h	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/subfilereference.h	Tue Sep 21 16:00:15 2021 +0300
@@ -22,6 +22,9 @@
 	glm::vec3 position() const;
 	void invert() override;
 	Model* resolve(DocumentManager* documents) const;
+	Type typeIdentifier() const override;
+	QDataStream& serialize(QDataStream& stream) const override;
+	QDataStream& deserialize(QDataStream& stream) override;
 	glm::mat4 transformation;
 	QString referenceName;
 	bool isInverted = false;
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/triangle.cpp
--- a/src/linetypes/triangle.cpp	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/triangle.cpp	Tue Sep 21 16:00:15 2021 +0300
@@ -27,3 +27,8 @@
 	// -> 1 0 2
 	std::swap(this->points[0], this->points[1]);
 }
+
+ldraw::Object::Type ldraw::Triangle::typeIdentifier() const
+{
+	return Type::Triangle;
+}
diff -r e2080ac44039 -r 488d0ba6070b src/linetypes/triangle.h
--- a/src/linetypes/triangle.h	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/linetypes/triangle.h	Tue Sep 21 16:00:15 2021 +0300
@@ -13,5 +13,6 @@
 	QString textRepresentation() const override;
 	void getPolygons(std::vector<gl::Polygon>& polygons, GetPolygonsContext* context) const override;
 	void invert() override;
+	Type typeIdentifier() const override;
 };
 
diff -r e2080ac44039 -r 488d0ba6070b src/main.cpp
--- a/src/main.cpp	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/main.cpp	Tue Sep 21 16:00:15 2021 +0300
@@ -37,3 +37,12 @@
 	mainwindow.show();
 	return app.exec();
 }
+
+QDataStream& operator<<(QDataStream& stream, const glm::vec3& vec)
+{
+	return stream << vec.x << vec.y << vec.z;
+}
+QDataStream& operator>>(QDataStream& stream, glm::vec3& vec)
+{
+	return stream >> vec.x >> vec.y >> vec.z;
+}
diff -r e2080ac44039 -r 488d0ba6070b src/main.h
--- a/src/main.h	Fri Sep 17 22:43:22 2021 +0300
+++ b/src/main.h	Tue Sep 21 16:00:15 2021 +0300
@@ -223,3 +223,41 @@
 		MapItemsIterator<K, const V, typename QMap<K, V>::iterator>
 	>{map};
 }
+
+/**
+ * Iterates a @c glm::mat
+ */
+template<int X, int Y, typename T, glm::qualifier Q, typename Fn>
+void iter_matrix(const glm::mat<X, Y, T, Q>& matrix, Fn&& fn)
+{
+	for (int i = 0; i < X; ++i)
+	{
+		for (int j = 0; j < Y; ++j)
+		{
+			fn(i, j, matrix[i][j]);
+		}
+	}
+}
+
+QDataStream& operator<<(QDataStream&, const glm::vec3&);
+QDataStream& operator>>(QDataStream&, glm::vec3&);
+
+template<int X, int Y, typename T, glm::qualifier Q, typename Fn>
+QDataStream& operator<<(QDataStream& stream, const glm::mat<X, Y, T, Q>& mat)
+{
+	iter_matrix(mat, [&stream](int, int, float x)
+	{
+		stream << x;
+	});
+	return stream;
+}
+
+template<int X, int Y, typename T, glm::qualifier Q, typename Fn>
+QDataStream& operator>>(QDataStream& stream, glm::mat<X, Y, T, Q>& mat)
+{
+	iter_matrix(mat, [&stream](int, int, float x)
+	{
+		stream >> x;
+	});
+	return stream;
+}