QwtClipper(3)

📦
version 6.3.0 · 6 versions
, in alpine 3.24

💅 QwtClipper(3) — Library Functions Manual

okay bestie, welcome to the glow-up era of clipping 💖 this is the QwtClipper page out of the Qwt User's Guide, and it's literally just clipping algorithms. that's the whole vibe. no cap.

✨ NAME ✨

QwtClipper — some clipping algorithms. that's it. that's the name. iconic minimalism 🎀

🌸 SYNOPSIS 🌸

🦋 Functions

QWT_EXPORT void clipPolygon (const QRect &, QPolygon &, bool
    closePolygon=false)
QWT_EXPORT void clipPolygon (const QRectF &, QPolygon &, bool
    closePolygon=false)
QWT_EXPORT void clipPolygonF (const QRectF &, QPolygonF &, bool
    closePolygon=false)
QWT_EXPORT QPolygon clippedPolygon (const QRect &, const QPolygon &,
    bool closePolygon=false)
QWT_EXPORT QPolygon clippedPolygon (const QRectF &, const QPolygon &,
    bool closePolygon=false)
QWT_EXPORT QPolygonF clippedPolygonF (const QRectF &, const QPolygonF &,
    bool closePolygon=false)
QWT_EXPORT QVector< QwtInterval > clipCircle (const QRectF &, const
    QPointF &, double radius)

seven whole functions, all QWT_EXPORT, all here to clip your stuff 🔥

🌈 Detailed Description 🌈

Some clipping algorithms.

that's the official description and honestly? she said what she said 💅 this class is the clip queen — polygons, circles, rectangles, all of it.

👑 Function Documentation 👑

🍓 QVector< QwtInterval > QwtClipper::clipCircle (const QRectF & clipRect, const QPointF & center, double radius)

Circle clipping 🌀

so clipCircle() divides a circle into intervals of angles, and those intervals represent arcs of the circle. and the cutest part: when the circle is completely inside the clip rectangle, you get an interval [0.0, 2 * M_PI] back. full circle, no notes, she ate 💖

Parameters

  • clipRect — Clip rectangle
  • center — Center of the circle
  • radius — Radius of the circle

Returns

Arcs of the circle ✨

Definition at line 477 of file qwt_clipper.cpp.

🧚 QPolygon QwtClipper::clippedPolygon (const QRect & clipRect, const QPolygon & polygon, bool closePolygon = false)

Sutherland-Hodgman polygon clipping ✂️

Parameters

  • clipRect — Clip rectangle
  • polygon — Polygon
  • closePolygon — True, when the polygon is closed

Returns

Clipped polygon 🫶

Definition at line 437 of file qwt_clipper.cpp.

🌸 QPolygon QwtClipper::clippedPolygon (const QRectF & clipRect, const QPolygon & polygon, bool closePolygon = false)

Sutherland-Hodgman polygon clipping ✂️ (the QRectF remix 💫)

Parameters

  • clipRect — Clip rectangle
  • polygon — Polygon
  • closePolygon — True, when the polygon is closed

Returns

Clipped polygon 🫶

Definition at line 420 of file qwt_clipper.cpp.

💜 QPolygonF QwtClipper::clippedPolygonF (const QRectF & clipRect, const QPolygonF & polygon, bool closePolygon = false)

Sutherland-Hodgman polygon clipping ✂️ but make it float — note the F on the end, she's fancy 🌟

Parameters

  • clipRect — Clip rectangle
  • polygon — Polygon
  • closePolygon — True, when the polygon is closed

Returns

Clipped polygon 🫶

Definition at line 455 of file qwt_clipper.cpp.

🎀 void QwtClipper::clipPolygon (const QRect & clipRect, QPolygon & polygon, bool closePolygon = false)

Sutherland-Hodgman polygon clipping ✂️

heads up bestie: polygon here is IN/OUT — she gets mutated in place, no return value, she just changes 😭

Parameters

  • clipRect — Clip rectangle
  • polygon — Polygon IN/OUT
  • closePolygon — True, when the polygon is closed

Definition at line 390 of file qwt_clipper.cpp.

⭐ void QwtClipper::clipPolygon (const QRectF & clipRect, QPolygon & polygon, bool closePolygon = false)

Sutherland-Hodgman polygon clipping ✂️ (yes, the QRectF version, she's a different overload, don't @ me)

again: polygon is IN/OUT — in-place mutation energy 👑

Parameters

  • clipRect — Clip rectangle
  • polygon — Polygon IN/OUT
  • closePolygon — True, when the polygon is closed

Definition at line 369 of file qwt_clipper.cpp.

🦋 void QwtClipper::clipPolygonF (const QRectF & clipRect, QPolygonF & polygon, bool closePolygon = false)

Sutherland-Hodgman polygon clipping ✂️ floating-point edition 💫

and yup, polygon is IN/OUT here too — mutated right in place ✨

Parameters

  • clipRect — Clip rectangle
  • polygon — Polygon IN/OUT
  • closePolygon — True, when the polygon is closed

Definition at line 404 of file qwt_clipper.cpp.

🫶 Author 🫶

Generated automatically by Doxygen for Qwt User's Guide from the source code.

(no human author credited, it's a robot doing its thing 🤖💅)

aaaaand that's the whole page, bestie — every function, every parameter, every default, every Definition at line reference, all accounted for, no cap 💖✨

real talk: closePolygon = false everywhere, so unless you flip it to true for closed polygons, she's open by default 🎀

and that's a wrap on QwtClipper(3) from the Qwt User's Guide — this cutie came straight from the source code, so go forth and clip slayfully 👑💜 🦋

📦 where this page comes from