[89] | 1 | /* -*- mode: C++ ; c-file-style: "stroustrup" -*- *****************************
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| 2 | * Qwt Widget Library
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| 3 | * Copyright (C) 1997 Josef Wilgen
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| 4 | * Copyright (C) 2002 Uwe Rathmann
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| 5 | *
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| 6 | * This library is free software; you can redistribute it and/or
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| 7 | * modify it under the terms of the Qwt License, Version 1.0
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| 8 | *****************************************************************************/
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| 9 |
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| 10 | // vim: expandtab
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| 11 |
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| 12 | #ifndef QWT_RASTER_DATA_H
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| 13 | #define QWT_RASTER_DATA_H 1
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| 14 |
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| 15 | #include <qmap.h>
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| 16 | #include "qwt_global.h"
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| 17 | #include "qwt_double_rect.h"
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| 18 | #include "qwt_double_interval.h"
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| 19 |
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| 20 | #if QT_VERSION >= 0x040000
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| 21 | #include <qlist.h>
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| 22 | #include <QPolygonF>
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| 23 |
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| 24 | #if defined(QWT_TEMPLATEDLL)
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| 25 | // MOC_SKIP_BEGIN
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| 26 | template class QWT_EXPORT QMap<double, QPolygonF>;
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| 27 | // MOC_SKIP_END
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| 28 | #endif
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| 29 |
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| 30 | #else
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| 31 | #include <qvaluelist.h>
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| 32 | #include "qwt_array.h"
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| 33 | #include "qwt_double_rect.h"
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| 34 | #if defined(QWT_TEMPLATEDLL)
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| 35 | // MOC_SKIP_BEGIN
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| 36 | #ifndef QWTARRAY_TEMPLATE_QWTDOUBLEPOINT // by mjo3
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| 37 | #define QWTARRAY_TEMPLATE_QWTDOUBLEPOINT
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| 38 | template class QWT_EXPORT QwtArray<QwtDoublePoint>;
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| 39 | #endif //end of QWTARRAY_TEMPLATE_QWTDOUBLEPOINT
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| 40 | #ifndef QMAP_TEMPLATE_DOUBLE_QWTDOUBLEPOINT // by mjo3
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| 41 | #define QMAP_TEMPLATE_DOUBLE_QWTDOUBLEPOINT
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| 42 | template class QWT_EXPORT QMap<double, QwtArray<QwtDoublePoint> >;
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| 43 | #endif //end of QMAP_TEMPLATE_QWTDOUBLEPOINT
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| 44 | // MOC_SKIP_END
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| 45 | #endif
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| 46 | #endif
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| 47 |
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| 48 | class QwtScaleMap;
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| 49 |
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| 50 | /*!
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| 51 | \brief QwtRasterData defines an interface to any type of raster data.
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| 52 |
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| 53 | QwtRasterData is an abstract interface, that is used by
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| 54 | QwtPlotRasterItem to find the values at the pixels of its raster.
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| 55 |
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| 56 | Often a raster item is used to display values from a matrix. Then the
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| 57 | derived raster data class needs to implement some sort of resampling,
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| 58 | that maps the raster of the matrix into the requested raster of
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| 59 | the raster item ( depending on resolution and scales of the canvas ).
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| 60 | */
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| 61 | class QWT_EXPORT QwtRasterData
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| 62 | {
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| 63 | public:
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| 64 | #if QT_VERSION >= 0x040000
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| 65 | typedef QMap<double, QPolygonF> ContourLines;
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| 66 | #else
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| 67 | typedef QMap<double, QwtArray<QwtDoublePoint> > ContourLines;
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| 68 | #endif
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| 69 |
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| 70 | //! Attribute to modify the contour algorithm
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| 71 | enum ConrecAttribute
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| 72 | {
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| 73 | IgnoreAllVerticesOnLevel = 1,
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| 74 | IgnoreOutOfRange = 2
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| 75 | };
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| 76 |
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| 77 | QwtRasterData();
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| 78 | QwtRasterData(const QwtDoubleRect &);
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| 79 | virtual ~QwtRasterData();
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| 80 |
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| 81 | //! Clone the data
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| 82 | virtual QwtRasterData *copy() const = 0;
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| 83 |
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| 84 | virtual void setBoundingRect(const QwtDoubleRect &);
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| 85 | QwtDoubleRect boundingRect() const;
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| 86 |
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| 87 | virtual QSize rasterHint(const QwtDoubleRect &) const;
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| 88 |
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| 89 | virtual void initRaster(const QwtDoubleRect &, const QSize& raster);
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| 90 | virtual void discardRaster();
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| 91 |
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| 92 | /*!
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| 93 | \return the value at a raster position
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| 94 | \param x X value in plot coordinates
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| 95 | \param y Y value in plot coordinates
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| 96 | */
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| 97 | virtual double value(double x, double y) const = 0;
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| 98 |
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| 99 | //! \return the range of the values
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| 100 | virtual QwtDoubleInterval range() const = 0;
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| 101 |
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| 102 | #if QT_VERSION >= 0x040000
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| 103 | virtual ContourLines contourLines(const QwtDoubleRect &rect,
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| 104 | const QSize &raster, const QList<double> &levels,
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| 105 | int flags) const;
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| 106 | #else
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| 107 | virtual ContourLines contourLines(const QwtDoubleRect &rect,
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| 108 | const QSize &raster, const QValueList<double> &levels,
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| 109 | int flags) const;
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| 110 | #endif
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| 111 |
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| 112 | class Contour3DPoint;
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| 113 | class ContourPlane;
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| 114 |
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| 115 | private:
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| 116 | QwtDoubleRect d_boundingRect;
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| 117 | };
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| 118 |
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| 119 | #endif
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