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QwtPixelMatrix(3) | Qwt User's Guide | QwtPixelMatrix(3) |
NAME¶
QwtPixelMatrix - A bit field corresponding to the pixels of a rectangle.
SYNOPSIS¶
#include <qwt_pixel_matrix.h>
Inherits QBitArray.
Public Member Functions¶
QwtPixelMatrix (const QRect &rect)
Constructor. ~QwtPixelMatrix ()
Destructor. void setRect (const QRect &rect)
QRect rect () const
bool testPixel (int x, int y) const
Test if a pixel has been set. bool testAndSetPixel (int x, int y, bool
on)
Set a pixel and test if a pixel has been set before.
Public Attributes¶
int const
Detailed Description¶
A bit field corresponding to the pixels of a rectangle.
QwtPixelMatrix is intended to filter out duplicates in an unsorted array of points.
Definition at line 24 of file qwt_pixel_matrix.h.
Constructor & Destructor Documentation¶
QwtPixelMatrix::QwtPixelMatrix (const QRect & rect) [explicit]¶
Constructor.
Parameters
Definition at line 17 of file qwt_pixel_matrix.cpp.
Member Function Documentation¶
QRect QwtPixelMatrix::rect () const¶
Returns
Definition at line 48 of file qwt_pixel_matrix.cpp.
void QwtPixelMatrix::setRect (const QRect & rect)¶
Set the bounding rectangle of the matrix
Parameters
Note
Definition at line 35 of file qwt_pixel_matrix.cpp.
bool QwtPixelMatrix::testAndSetPixel (int x, int y, bool on) [inline]¶
Set a pixel and test if a pixel has been set before.
Parameters
y Y-coordinate
on Set/Clear the pixel
Returns
Definition at line 67 of file qwt_pixel_matrix.h.
bool QwtPixelMatrix::testPixel (int x, int y) const [inline]¶
Test if a pixel has been set.
Parameters
y Y-coordinate
Returns
Definition at line 51 of file qwt_pixel_matrix.h.
Author¶
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Sun Jul 18 2021 | Version 6.2.0 |