Trsf2d.h

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//
// Copyright(C) 2013-2016  OpenCascade [www.opencascade.org]
//
// This library is free software; you can redistribute it and / or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library 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
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street,
// Fifth Floor, Boston, MA  02110 - 1301  USA
//

#pragma once

#include <Geom/Mat2d.h>
#include <Geom/XY.h>

namespace Geom
{
class Ax2d;
class Pnt2d;
class Vec2d;


class GEOM_EXPORT Trsf2d
{
public:
    enum FormEnum
    {
        Identity,
        Rotation,
        Translation,
        PntMirror,
        Ax1Mirror,
        Ax2Mirror,
        Scale,
        CompoundTrsf,
        Other
    };

    Trsf2d();
    Trsf2d(const Trsf2d& T);

    Trsf2d::FormEnum form() const;
    const Mat2d& hVectorialPart() const;

    void invert();

    Trsf2d inverted() const;

    bool isNegative() const;

    Trsf2d multiplied(const Trsf2d& T) const;
    void multiply(const Trsf2d& T);
    Trsf2d operator*(const Trsf2d& T) const { return multiplied(T); }

    void operator*=(const Trsf2d& T) { multiply(T); }

    void power(const int N);

    Trsf2d powered(const int N);

    void preMultiply(const Trsf2d& T);

    double rotationPart() const;

    double scaleFactor() const;

    void setMirror(const Pnt2d& P);

    void setMirror(const Ax2d& A);

    void setRotation(const Pnt2d& P, const double Ang);

    void setScale(const Pnt2d& P, const double S);

    void setScaleFactor(const double S);
    void setTransformation(const Ax2d& FromSystem1, const Ax2d& ToSystem2);

    void setTransformation(const Ax2d& ToSystem);

    void setTranslation(const Vec2d& V);

    void setTranslation(const Pnt2d& P1, const Pnt2d& P2);
    void setTranslationPart(const Vec2d& V);
    void transforms(double& X, double& Y) const;
    void transforms(XY& Coord) const;

    const XY& translationPart() const;

    double value(const int Row, const int Col) const;

    Mat2d vectorialPart() const;

    friend class GTrsf2d;

protected:
private:
    Geom::XY _loc;
    Mat2d _matrix;
    double _scale;
    Trsf2d::FormEnum _shape;
};
}  // namespace Geom