QwtClipper(3)                  Qwt User's Guide                  QwtClipper(3)

NAME
       QwtClipper - Some clipping algorithms.


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)

Detailed Description
       Some clipping algorithms.

Function Documentation
   QVector< QwtInterval > QwtClipper::clipCircle (const QRectF & clipRect,
       const QPointF & center, double radius)
       Circle clipping

       clipCircle() divides a circle into intervals of angles representing
       arcs of the circle. When the circle is completely inside the clip
       rectangle an interval [0.0, 2 * M_PI] is returned.

       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

       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

       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

       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

       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

       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.

Version 6.2.0                   Sun Jul 18 2021                  QwtClipper(3)