class CCL::Math::LogarithmicCurve

Overview

General logarithmic curve defined as: y = k * ln (m * x + c) + d. More…

#include <mathcurve.h>

class LogarithmicCurve: public CCL::Math::Curve
{
public:
    // fields

     m;
    XScaler d;

    // construction

    LogarithmicCurve (double k = 1., double m = 1., double c = 0., double d = 0.);

    // methods

    PROPERTY_VARIABLE (double, k, YScaler);
    XScaler PROPERTY_VARIABLE (double, c, XOffset);

    XScaler YOffset LogarithmicCurve& setPoints (
        double x1,
        double y1,
        double x2,
        double y2
    );

    virtual double getY (double x) const;
};

Inherited Members

public:
    // typedefs

    typedef CStringRef MemberID;

    // methods

    virtual tresult CCL_API queryInterface (UIDRef iid, void** ptr) = 0;
    virtual unsigned int CCL_API retain () = 0;
    virtual unsigned int CCL_API release () = 0;
    Unknown& operator = (const Unknown&);
    unsigned int getRetainCount () const;
    virtual Object*CCL_API revealObject (const void* moduleAddress) = 0;
    virtual void CCL_API addObserver (IObserver* observer) = 0;
    virtual void CCL_API removeObserver (IObserver* observer) = 0;
    virtual void CCL_API signal (MessageRef msg) = 0;
    virtual void CCL_API deferSignal (IMessage* msg) = 0;
    static ISubject void addObserver (IUnknown* unknown, IObserver* observer);
    static void removeObserver (IUnknown* unknown, IObserver* observer);
    virtual void CCL_API notify (ISubject* subject, MessageRef msg) = 0;

    static IObserver void notify (
        IUnknown* unknown,
        ISubject* subject,
        MessageRef msg
    );

    virtual const ITypeInfo&CCL_API getTypeInfo () const = 0;
    virtual tbool CCL_API getProperty (Variant& var, MemberID propertyId) const = 0;
    virtual tbool CCL_API setProperty (MemberID propertyId, const Variant& var) = 0;
    virtual tbool CCL_API getPropertyNames (IPropertyCollector& collector) const = 0;
    virtual tbool CCL_API invokeMethod (Variant& returnValue, MessageRef msg) = 0;
    DECLARE_BASE_CLASS (Object);
    virtual void CCL_API removeObserver (IObserver* observer);
    virtual void CCL_API signal (MessageRef msg);
    virtual void CCL_API deferSignal (IMessage* msg);
    virtual void deferChanged ();
    virtual void CCL_API notify (ISubject* subject, MessageRef msg);
    virtual bool equals (const Object& obj) const;
    virtual int compare (const Object& obj) const;
    virtual bool load (const Storage& storage);
    virtual bool save (const Storage& storage) const;
    virtual bool save (const OutputStorage& storage) const;
    virtual bool toString (String& string, int flags = 0) const;
    virtual int getHashCode (int size) const;
    IUnknown* asUnknown ();
    static void addGarbageCollected (Object* obj, bool globalScope = true);
    static void deferDestruction (Object* obj);
    static const void* getModuleAddress ();
    virtual double getY (double x) const = 0;

Detailed Documentation

General logarithmic curve defined as: y = k * ln (m * x + c) + d.

Methods

XScaler PROPERTY_VARIABLE (double, c, XOffset)

< x-scaling

XScaler YOffset LogarithmicCurve& setPoints (
    double x1,
    double y1,
    double x2,
    double y2
)

< y-offset

Translate the curve to go through two known points. Only changes c and d.

virtual double getY (double x) const

calculate y for x