RArc.h

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#ifndef RARC_H
#define RARC_H
 
#include "../core_global.h"
 
#include "RShape.h"
#include "RVector.h"
#include "RArcProxy.h"
 
class RBox;
class RLine;
class RPolyline;
 
class QCADCORE_EXPORT RArc: public RShape {
public:
    RArc();
    RArc(double cx, double cy, double radius, double startAngle,
         double endAngle, bool reversed = false);
    RArc(const RVector& center, double radius, double startAngle,
            double endAngle, bool reversed = false);
 
    virtual RShape::Type getShapeType() const {
        return Arc;
    }
 
    virtual QSharedPointer<RShape> clone() const {
        return QSharedPointer<RShape>(new RArc(*this));
    }
 
    QSharedPointer<RArc> cloneToArc() const {
        return QSharedPointer<RArc>(new RArc(*this));
    }
 
    virtual bool isDirected() const {
        return true;
    }
 
    virtual void setZ(double z);
 
    virtual QList<RVector> getVectorProperties() const;
    virtual QList<double> getDoubleProperties() const;
    virtual QList<bool> getBoolProperties() const;
 
    virtual bool isValid() const;
    bool isFullCircle(double tolerance = RS::AngleTolerance) 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 = 0.0,
                                 double sweep = 0.0);
    static QList<RArc> createBiarc(const RVector& startPoint, double startDirection,
                                   const RVector& endPoint, double endDirection, bool secondTry = false);
 
    virtual RBox getBoundingBox() const;
 
    virtual QList<RVector> getEndPoints() const;
    virtual QList<RVector> getMiddlePoints() const;
    virtual QList<RVector> getCenterPoints() const;
    virtual QList<RVector> getArcReferencePoints() const;
    virtual QList<RVector> getPointsWithDistanceToEnd(
        double distance, int from = RS::FromAny) const;
    virtual QList<RVector> getPointCloud(double segmentLength) const;
 
    virtual RVector getVectorTo(const RVector& point,
            bool limited = true, double strictRange = RMAXDOUBLE) 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;
    bool isAngleWithinArc(double a) const {
        return RMath::isAngleBetween(a, startAngle, endAngle, reversed);
    }
 
    double getDiameter() const;
    void setDiameter(double d);
    void setLength(double l);
    double getArea() const;
    void setArea(double a);
    double getChordArea() const;
 
    virtual double getDirection1() const;
    virtual double getDirection2() const;
 
    virtual RS::Side getSideOfPoint(const RVector& point) const;
 
    double getSweep() const;
    void setSweep(double s);
    double getLength() const;
 
    virtual RVector getStartPoint() const;
    virtual RVector getEndPoint() const;
    RVector getPointAtAngle(double a) const;
    virtual double getAngleAt(double distance, RS::From from = RS::FromStart) const;
    virtual RVector getMiddlePoint() const;
 
    void moveStartPoint(const RVector& pos, bool keepRadius = true);
    void moveEndPoint(const RVector& pos, bool keepRadius = true);
    void moveMiddlePoint(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 QSharedPointer<RShape> getTransformed(const QTransform& transform) const;
 
    virtual RS::Ending getTrimEnd(const RVector& trimPoint, const RVector& clickPoint);
    virtual bool trimStartPoint(const RVector& trimPoint, const RVector& clickPoint = RVector::invalid, bool extend = false);
    virtual bool trimEndPoint(const RVector& trimPoint, const RVector& clickPoint = RVector::invalid, bool extend = false);
    virtual bool trimStartPoint(double trimDist) {
        return RShape::trimStartPoint(trimDist);
    }
    virtual bool trimEndPoint(double trimDist) {
        return RShape::trimEndPoint(trimDist);
    }
    virtual double getDistanceFromStart(const RVector& p) const;
 
    RPolyline approximateWithLines(double segmentLength, double angle = 0.0) const;
    RPolyline approximateWithLinesTan(double segmentLength, double angle = 0.0) const;
 
    QList<RLine> getTangents(const RVector& point) const;
 
    virtual QList<QSharedPointer<RShape> > getOffsetShapes(double distance, int number, RS::Side side, const RVector& position = RVector::invalid) {
        return RShape::getOffsetArcs(*this, distance, number, side, position);
    }
 
    virtual QList<QSharedPointer<RShape> > splitAt(const QList<RVector>& points) const;
 
    QList<RArc> splitAtQuadrantLines() const;
 
    static bool hasProxy() {
        return arcProxy!=NULL;
    }
 
    static void setArcProxy(RArcProxy* p) {
        if (arcProxy!=NULL) {
            delete arcProxy;
        }
        arcProxy = p;
    }
 
    static RArcProxy* getArcProxy() {
        return arcProxy;
    }
 
#if QT_VERSION >= 0x060000
    RArc copy() const {
        return *this;
    }
#endif
 
protected:
    virtual void print(QDebug dbg) const;
 
private:
    static RArcProxy* arcProxy;
 
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