SYNOPSIS

#include <qwt_clipper.h>

Static Public Member Functions

static QwtArray< QwtDoubleInterval > clipCircle (const QwtDoubleRect &, const QwtDoublePoint &, double radius)

static QwtPolygon clipPolygon (const QRect &, const QwtPolygon &)

static QwtPolygonF clipPolygonF (const QwtDoubleRect &, const QwtPolygonF &)

Detailed Description

Some clipping algos.

Member Function Documentation

QwtArray< QwtDoubleInterval > QwtClipper::clipCircle (const QwtDoubleRect &clipRect, const QwtDoublePoint &center, doubleradius) [static]Circle clipping

clipCircle() devides 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

QwtPolygon QwtClipper::clipPolygon (const QRect &clipRect, const QwtPolygon &polygon) [static]Sutherland-Hodgman polygon clipping

Parameters:

clipRect Clip rectangle
polygon Polygon

Returns:

Clipped polygon

QwtPolygonF QwtClipper::clipPolygonF (const QwtDoubleRect &clipRect, const QwtPolygonF &polygon) [static]Sutherland-Hodgman polygon clipping

Parameters:

clipRect Clip rectangle
polygon Polygon

Returns:

Clipped polygon

Author

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