Changeset - b330bcc00fb7
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Hasan Yavuz ÖZDERYA - 8 years ago 2018-05-13 12:36:08
hy@ozderya.net
updated FrameBufferSeries to new "FrameBuffer"
2 files changed with 13 insertions and 8 deletions:
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src/framebufferseries.cpp
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/*
 
  Copyright © 2017 Hasan Yavuz Özderya
 
  Copyright © 2018 Hasan Yavuz Özderya
 

	
 
  This file is part of serialplot.
 

	
 
  serialplot is free software: you can redistribute it and/or modify
 
  it under the terms of the GNU General Public License as published by
 
  the Free Software Foundation, either version 3 of the License, or
 
  (at your option) any later version.
 

	
 
  serialplot is distributed in the hope that it will be useful,
 
  but WITHOUT ANY WARRANTY; without even the implied warranty of
 
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
  GNU General Public License for more details.
 

	
 
  You should have received a copy of the GNU General Public License
 
  along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
 
*/
 

	
 
#include <math.h>
 
#include "framebufferseries.h"
 

	
 
FrameBufferSeries::FrameBufferSeries(FrameBuffer* buffer)
 
{
 
    xAsIndex = true;
 
    _xmin = 0;
 
@@ -36,55 +36,59 @@ void FrameBufferSeries::setXAxis(bool as
 
    _xmin = xmin;
 
    _xmax = xmax;
 
}
 

	
 
size_t FrameBufferSeries::size() const
 
{
 
    return int_index_end - int_index_start;
 
}
 

	
 
QPointF FrameBufferSeries::sample(size_t i) const
 
{
 
    i += int_index_start;
 
    if (xAsIndex)
 
    {
 
        return QPointF(i, _buffer->sample(i));
 
    }
 
    else
 
    {
 
        return QPointF(i * (_xmax - _xmin) / _buffer->size() + _xmin, _buffer->sample(i));
 
    }
 
}
 

	
 
QRectF FrameBufferSeries::boundingRect() const
 
{
 
    QRectF rect;
 
    auto yLim = _buffer->limits();
 
    rect.setBottom(yLim.start);
 
    rect.setTop(yLim.end);
 
    if (xAsIndex)
 
    {
 
        return _buffer->boundingRect();
 
        rect.setLeft(0);
 
        rect.setRight(size());
 
    }
 
    else
 
    {
 
        auto rect = _buffer->boundingRect();
 
        rect.setLeft(_xmin);
 
        rect.setRight(_xmax);
 
        return rect;
 
    }
 
    return rect;
 
}
 

	
 
void FrameBufferSeries::setRectOfInterest(const QRectF& rect)
 
{
 
    if (xAsIndex)
 
    {
 
        int_index_start = floor(rect.left())-1;
 
        int_index_end = ceil(rect.right())+1;
 
    }
 
    else
 
    {
 
        double xsize = _xmax - _xmin;
 
        size_t bsize = _buffer->size();
 
        int_index_start =  floor(bsize * (rect.left()-_xmin) / xsize)-1;
 
        int_index_end = ceil(bsize * (rect.right()-_xmin) / xsize)+1;
 
    }
 

	
 
    int_index_start = std::max(int_index_start, 0);
 
    int_index_end = std::min((int) _buffer->size(), int_index_end);
 
}
src/framebufferseries.h
Show inline comments
 
/*
 
  Copyright © 2017 Hasan Yavuz Özderya
 
  Copyright © 2018 Hasan Yavuz Özderya
 

	
 
  This file is part of serialplot.
 

	
 
  serialplot is free software: you can redistribute it and/or modify
 
  it under the terms of the GNU General Public License as published by
 
  the Free Software Foundation, either version 3 of the License, or
 
  (at your option) any later version.
 

	
 
  serialplot is distributed in the hope that it will be useful,
 
  but WITHOUT ANY WARRANTY; without even the implied warranty of
 
  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 
  GNU General Public License for more details.
 

	
 
  You should have received a copy of the GNU General Public License
 
  along with serialplot.  If not, see <http://www.gnu.org/licenses/>.
 
*/
 

	
 
#ifndef FRAMEBUFFERSERIES_H
 
#define FRAMEBUFFERSERIES_H
 

	
 
#include <QPointF>
 
#include <QRectF>
 
#include <qwt_series_data.h>
 

	
 
#include "framebuffer.h"
 
// TODO: rename when framebuffer.h is deleted
 
#include "framebuffer2.h"
 

	
 
/**
 
 * This class provides an interface for actual FrameBuffer
 
 * object. That way we can keep our data structures relatively
 
 * isolated from Qwt. Otherwise QwtPlotCurve owns FrameBuffer
 
 * structures.
 
 */
 
class FrameBufferSeries : public QwtSeriesData<QPointF>
 
{
 
public:
 
    FrameBufferSeries(FrameBuffer* buffer);
 
    FrameBufferSeries(const FrameBuffer* buffer);
 

	
 
    /// Behavior of X axis
 
    void setXAxis(bool asIndex, double xmin, double xmax);
 

	
 
    // QwtSeriesData implementations
 
    size_t size() const;
 
    QPointF sample(size_t i) const;
 
    QRectF boundingRect() const;
 
    void setRectOfInterest(const QRectF& rect);
 

	
 
private:
 
    FrameBuffer* _buffer;
 
    const FrameBuffer* _buffer;
 
    bool xAsIndex;
 
    double _xmin;
 
    double _xmax;
 

	
 
    int int_index_start; ///< starting index of "rectangle of interest"
 
    int int_index_end;   ///< ending index of "rectangle of interest"
 
};
 

	
 
#endif // FRAMEBUFFERSERIES_H
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