RArc.h

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#ifndef RARC_H
#define RARC_H

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

class RBox;
class RPolyline;

class RArc: public RShape, public RDirected {
public:
    RArc();
    RArc(const RVector& center, double radius, double startAngle,
            double endAngle, bool reversed = false);
    virtual ~RArc();

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

    virtual void to2D();

    bool isValid() const;
    bool isFullCircle() const;

    static RArc createFrom3Points(const RVector& startPoint,
                                  const RVector& point,
                                  const RVector& endPoint);
    static RArc createFrom2PBulge(const RVector& startPoint,
                                  const RVector& endPoint,
                                  double bulge);
    static RArc createTangential(const RVector& startPoint,
                                 const RVector& pos,
                                 double direction,
                                 double radius);

    virtual RBox getBoundingBox() 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;

    RVector getCenter() const;
    void setCenter(const RVector& vector);
    double getRadius() const;
    void setRadius(double radius);
    double getStartAngle() const;
    void setStartAngle(double startAngle);
    double getEndAngle() const;
    void setEndAngle(double endAngle);
    bool isReversed() const;
    void setReversed(bool reversed);
    double getAngleLength(bool allowForZeroLength = false) const;

    double getDiameter() const;
    void setDiameter(double d);
    void setLength(double l);
    double getArea() const;
    void setArea(double a);

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

    RS::Side getSideOfPoint(const RVector& point) const;

    double getSweep() const;
    double getLength() const;

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

    void moveStartPoint(const RVector& pos);
    void moveEndPoint(const RVector& pos);
    double getBulge() const;

    virtual bool move(const RVector& offset);
    virtual bool rotate(double rotation, const RVector& center = RDEFAULT_RVECTOR);
    virtual bool scale(const RVector& scaleFactors, const RVector& center = RDEFAULT_RVECTOR);
    virtual bool mirror(const RLine& axis);
    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);

    RPolyline approximateWithLines(double segmentLength);

protected:
    virtual void print(QDebug dbg) const;

public:
    RVector center;
    double radius;
    double startAngle;
    double endAngle;
    bool reversed;
};

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

#endif