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Qwt User's Guide 6.0.1
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Some clipping algos. More...
#include <qwt_clipper.h>
Static Public Member Functions | |
| static QVector< QwtInterval > | clipCircle (const QRectF &, const QPointF &, double radius) |
| static QPolygon | clipPolygon (const QRect &, const QPolygon &, bool closePolygon=false) |
| static QPolygonF | clipPolygonF (const QRectF &, const QPolygonF &, bool closePolygon=false) |
Some clipping algos.
| QVector< QwtInterval > QwtClipper::clipCircle | ( | const QRectF & | clipRect, |
| const QPointF & | center, | ||
| double | radius | ||
| ) | [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.
| clipRect | Clip rectangle |
| center | Center of the circle |
| radius | Radius of the circle |
| QPolygon QwtClipper::clipPolygon | ( | const QRect & | clipRect, |
| const QPolygon & | polygon, | ||
| bool | closePolygon = false |
||
| ) | [static] |
Sutherland-Hodgman polygon clipping
| clipRect | Clip rectangle |
| polygon | Polygon |
| closePolygon | True, when the polygon is closed |
| QPolygonF QwtClipper::clipPolygonF | ( | const QRectF & | clipRect, |
| const QPolygonF & | polygon, | ||
| bool | closePolygon = false |
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| ) | [static] |
Sutherland-Hodgman polygon clipping
| clipRect | Clip rectangle |
| polygon | Polygon |
| closePolygon | True, when the polygon is closed |
1.7.3