diff -r 8bbf2af8c3f5 -r 7a2d84112983 src/types/matrix.h
--- a/src/types/matrix.h	Sun Jun 10 23:25:08 2018 +0300
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,97 +0,0 @@
-/*
- *  LDForge: LDraw parts authoring CAD
- *  Copyright (C) 2013 - 2018 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/>.
- */
-
-#pragma once
-#include <QString>
-#include <QMetaType>
-
-/*
- * A mathematical 3 × 3 matrix
- */
-class Matrix
-{
-public:
-	class RowView;
-	class ConstRowView;
-
-	Matrix();
-	Matrix (const std::initializer_list<double>& values);
-	Matrix (double fillval);
-
-	double* begin();
-	const double* begin() const;
-	double determinant() const;
-	double* end();
-	const double* end() const;
-	Matrix multiply(const Matrix& other) const;
-	QString toString() const;
-	double& value(int index);
-	const double& value(int index) const;
-	void zero();
-
-	bool operator==(const Matrix& other) const;
-	bool operator!=(const Matrix& other) const;
-	Matrix operator*(const Matrix& other) const;
-	RowView operator[](int row);
-	ConstRowView operator[](int row) const;
-	double& operator()(int row, int column);
-	const double& operator()(int row, int column) const;
-	Matrix& operator*=(const Matrix& other);
-
-	static const Matrix identity;
-	static Matrix fromQMatrix(const QMatrix4x4& matrix);
-	static Matrix scaleMatrix(qreal scalar);
-
-private:
-	double m_values[9];
-};
-
-Q_DECLARE_METATYPE(Matrix)
-
-/*
- * A structure that provides a view into a row in a matrix.
- * This is returned by operator[] so that the matrix can be accessed by A[i][j]
- */
-class Matrix::RowView
-{
-public:
-	RowView(Matrix &matrix, int row);
-	double& operator[](int column);
-	Matrix& matrix() const;
-	int row();
-
-private:
-	Matrix& _matrix;
-	const int _row;
-};
-
-/*
- * Const version of the above
- */
-class Matrix::ConstRowView
-{
-public:
-	ConstRowView(const Matrix &matrix, int row);
-	const double& operator[](int column);
-	const Matrix& matrix() const;
-	int row();
-
-private:
-	const Matrix& _matrix;
-	const int _row;
-};