RPolyline.h

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#ifndef RPOLYLINE_H
#define RPOLYLINE_H

#include <QPainterPath>

#include "RDirected.h"
#include "RExplodable.h"
#include "RShape.h"
#include "RVector.h"

class RBox;

class RPolyline: public RShape, public RExplodable, public RDirected {
public:
    RPolyline();
    RPolyline(const QList<RVector>& vertices, bool closed);
    RPolyline(const QList<QSharedPointer<RShape> >& segments);
    virtual ~RPolyline();

    virtual RPolyline* clone() const {
        return new RPolyline(*this);
    }

    virtual void to2D();

    void clear();
    void normalize();

    void appendShape(const RShape& shape);

    void appendVertex(const RVector& vertex, double bulge = 0.0);
    void prependVertex(const RVector& vertex, double bulge = 0.0);
    void insertVertex(int index, const RVector& vertex);
    void removeLastVertex();
    void removeVertex(int index);

    void setVertices(const QList<RVector>& vertices);
    QList<RVector> getVertices() const;
    void setVertexAt(int i, const RVector& v);
    RVector getVertexAt(int i) const;
    RVector getLastVertex() const;
    int countVertices() const;

    void setBulges(const QList<double>& b);
    QList<double> getBulges() const;
    double getBulgeAt(int i) const;
    void setBulgeAt(int i, double b);
    bool hasArcSegments() const;

    void setClosed(bool on);
    bool isClosed() const;
    bool isLogicallyClosed() const;

    bool contains(const RVector& point) const;
    // TODO:
    //bool contains(const RShape& shape) const;

    virtual RVector getStartPoint() const;
    virtual RVector getEndPoint() const;

    virtual double getDirection1() const;
    virtual double getDirection2() const;

    virtual RBox getBoundingBox() const;

    virtual double getLength() const;

    virtual QList<RVector> getEndPoints() const;
    virtual QList<RVector> getMiddlePoints() const;
    virtual QList<RVector> getCenterPoints() const;
    virtual QList<RVector> getPointsWithDistanceToEnd(
        double distance, RS::From from = RS::FromAny) const;

    virtual RVector getVectorTo(const RVector& point,
            bool limited = true) const;

    virtual bool move(const RVector& offset);
    virtual bool rotate(double rotation, const RVector& center = RDEFAULT_RVECTOR);
    virtual bool scale(double scaleFactor, const RVector& center = RDEFAULT_RVECTOR);
    virtual bool scale(const RVector& scaleFactors, const RVector& center = RDEFAULT_RVECTOR);
    virtual bool mirror(const RLine& axis);
    virtual bool flipHorizontal();
    virtual bool flipVertical();
    virtual bool reverse();
    virtual bool stretch(const RPolyline& area, const RVector& offset);

    virtual RS::Ending getTrimEnd(const RVector& coord, const RVector& trimPoint);
    virtual void trimStartPoint(const RVector& p);
    virtual void trimEndPoint(const RVector& p);

    virtual QList<QSharedPointer<RShape> > getExploded() const;
    virtual bool isInterpolated() const {
        return false;
    }
    int countSegments() const;
    QSharedPointer<RShape> getSegmentAt(int i) const;

    static bool isStraight(double bulge);

    QPainterPath toPainterPath() const;

protected:
    void addToPainterPath(QPainterPath& pp, QSharedPointer<RShape> shape) const;
    bool isLineSegment(int i) const;

    void print(QDebug dbg) const;

protected:
    QList<RVector> vertices;

    QList<double> bulges;

    bool closed;

private:
    // TODO caching:
    //QList<QSharedPointer<RShape> > subShapes;
};

Q_DECLARE_METATYPE(const RPolyline*)
Q_DECLARE_METATYPE(RPolyline*)
Q_DECLARE_METATYPE(RPolyline)
Q_DECLARE_METATYPE(QSharedPointer<RPolyline>)
Q_DECLARE_METATYPE(QSharedPointer<RPolyline>*)

#endif