QwtCurveFitter(3)

💖 QwtCurveFitter(3) — like, the mother of all curve fitters 💖

okay bestie, settle in, because this one's from the Qwt User's Guide manual and it's genuinely the blueprint of the whole curve-fitting family 🌸

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✨ NAME ✨

QwtCurveFitter — the abstract base class for a curve fitter. yes. abstract. it's giving "i don't do the work, my children do" main character energy 👑

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🦋 SYNOPSIS 🦋

#include <qwt_curve_fitter.h>

Inherited by QwtPolarFitter, QwtSplineCurveFitter, and QwtWeedingCurveFitter — those three are the nepo babies that actually implement stuff, and we love them for it 🫶

🎀 Public Types

• enum Mode { Polygon, Path } — the preferred mode of the fitting algorithm. like, what format does your fitter vibe with ✨

🎀 Public Member Functions

• virtual ~QwtCurveFitter () — Destructor. say bye 👋
• Mode mode () const — tells you which mode it prefers
• virtual QPolygonF fitCurve (const QPolygonF &polygon) const =0 — pure virtual, so you must implement it
• virtual QPainterPath fitCurvePath (const QPolygonF &polygon) const =0 — also pure virtual, also mandatory

🎀 Protected Member Functions

• QwtCurveFitter (Mode mode) — the constructor, protected, so it's a "family only" situation 🙈

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💅 Detailed Description 💅

Abstract base class for a curve fitter.

Definition at line 21 of file qwt_curve_fitter.h. — yes bestie, receipts included 🧾

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🌈 Member Enumeration Documentation 🌈

enum QwtCurveFitter::Mode

Preferred mode of the fitting algorithm. and listen, this is the important bit: even if a QPainterPath can always be created from a QPolygonF, the overhead of that conversion can be avoided by indicating the preference of the implementation to the application code. so like, don't do extra work for no reason, periodt 💀

Enumerator:

• Polygon — the fitting algorithm creates a polygon, and the implementation of fitCurvePath() simply wraps the polygon into a path. lowkey lazy but in a smart way 💅
  • See also: QwtWeedingCurveFitter
• Path — the fitting algorithm creates a painter path, and the implementation of fitCurve() extracts a polygon from the path. reverse uno card 🦋
  • See also: QwtSplineCurveFitter

Definition at line 32 of file qwt_curve_fitter.h.

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🍓 Constructor & Destructor Documentation 🍓

QwtCurveFitter::~QwtCurveFitter () [virtual]

Destructor. that's it. that's the whole sentence. clean, minimal, iconic 🎀

Definition at line 22 of file qwt_curve_fitter.cpp.

QwtCurveFitter::QwtCurveFitter (Mode mode) [explicit], [protected]

Constructor ✨

Parameters:

• mode — Preferred fitting mode. pick your vibe bestie 🌸

Definition at line 16 of file qwt_curve_fitter.cpp.

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🔥 Member Function Documentation 🔥

virtual QPolygonF QwtCurveFitter::fitCurve (const QPolygonF & polygon) const [pure virtual]

Find a curve which has the best fit to a series of data points. it's literally the whole point of the class 😭

Parameters:

• polygon — Series of data points

Returns: Curve points

See also: fitCurvePath()

Implemented in QwtPolarFitter, QwtSplineCurveFitter, and QwtWeedingCurveFitter — all three of them, no cap 👑

virtual QPainterPath QwtCurveFitter::fitCurvePath (const QPolygonF & polygon) const [pure virtual]

Find a curve path which has the best fit to a series of data points. same assignment, different return type, we stay flexible 💜

Parameters:

• polygon — Series of data points

Returns: Curve path

See also: fitCurve()

Implemented in QwtPolarFitter, QwtSplineCurveFitter, and QwtWeedingCurveFitter 🌈

QwtCurveFitter::Mode QwtCurveFitter::mode () const

Returns: Preferred fitting mode. that's the whole function. she's short and she knows it 💅

Definition at line 27 of file qwt_curve_fitter.cpp.

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⭐ Author ⭐

Generated automatically by Doxygen for Qwt User's Guide from the source code. so nobody wrote this by hand, the robot did it, and honestly? slay 🤖✨

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💖 reminder bestie: fitCurve() and fitCurvePath() are pure virtual — this base class will not do the fitting for you, you gotta subclass it or use one of the three implementations. no shortcuts, iykyk 😭

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mwah 💋 that's the whole page, sourced from the Qwt User's Guide, QwtCurveFitter(3), generated by Doxygen from the source code — see u next time, bestie 🦋💖