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Qwt User's Guide 6.3.0
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Some clipping algorithms. More...
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) |
Some clipping algorithms.
| 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.
| clipRect | Clip rectangle |
| center | Center of the circle |
| radius | Radius 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
| clipRect | Clip rectangle |
| polygon | Polygon |
| closePolygon | True, when the polygon is closed |
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
| clipRect | Clip rectangle |
| polygon | Polygon |
| closePolygon | True, when the polygon is closed |
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
| clipRect | Clip rectangle |
| polygon | Polygon |
| closePolygon | True, when the polygon is closed |
Definition at line 455 of file qwt_clipper.cpp.
| void QwtClipper::clipPolygon | ( | const QRect & | clipRect, |
| QPolygon & | polygon, | ||
| bool | closePolygon = false ) |
Sutherland-Hodgman polygon clipping
| 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
| 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
| clipRect | Clip rectangle |
| polygon | Polygon IN/OUT |
| closePolygon | True, when the polygon is closed |
Definition at line 404 of file qwt_clipper.cpp.