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00029 #ifndef FFTFILTER_H
00030 #define FFTFILTER_H
00031
00032 #include "Filter.h"
00033
00034 class FFTFilter : public Filter
00035 {
00036 Q_OBJECT
00037
00038 public:
00039 FFTFilter(ApplicationWindow *parent, QwtPlotCurve *c, int m = 1);
00040 FFTFilter(ApplicationWindow *parent, QwtPlotCurve *c, double start, double end, int m = 1);
00041 FFTFilter(ApplicationWindow *parent, Graph *g, const QString& curveTitle, int m = 1);
00042 FFTFilter(ApplicationWindow *parent, Graph *g, const QString& curveTitle, double start, double end, int m = 1);
00043 FFTFilter(ApplicationWindow *parent, Table *t, const QString& xCol, const QString& yCol, int start = 0, int end = -1, int m = 1);
00044
00045 enum FilterType{LowPass = 1, HighPass = 2, BandPass = 3, BandBlock = 4};
00046
00047 void setFilterType(int type);
00048
00050 void setCutoff(double f);
00051
00053 void setBand(double lowFreq, double highFreq);
00054
00056 void enableOffset(bool offset = true){d_offset = offset;};
00057
00058 private:
00059 void init(int m);
00060 void calculateOutputData(double *x, double *y);
00061
00063 FilterType d_filter_type;
00064
00066 double d_low_freq;
00067
00069 double d_high_freq;
00070
00072 bool d_offset;
00073 };
00074
00075 #endif