52 lines
1.2 KiB
C++
52 lines
1.2 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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*/
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#pragma once
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#include <basegfx/point/b2dpoint.hxx>
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#include <tools/gen.hxx>
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namespace vcl::pdf
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{
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// matrix helper class
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// TODO: use basegfx matrix class instead or derive from it
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/* for sparse matrices of the form (2D linear transformations)
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* f[0] f[1] 0
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* f[2] f[3] 0
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* f[4] f[5] 1
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*/
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class Matrix3
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{
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double f[6];
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void set(const double* pn)
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{
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for (int i = 0; i < 6; i++)
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f[i] = pn[i];
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}
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public:
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Matrix3();
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void skew(double alpha, double beta);
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void scale(double sx, double sy);
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void rotate(double angle);
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void translate(double tx, double ty);
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void invert();
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double get(size_t i) const { return f[i]; }
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Point transform(const Point& rPoint) const;
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basegfx::B2DPoint transform(const basegfx::B2DPoint& rPoint) const;
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};
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}
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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