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32 lines
1.1 KiB
C++
32 lines
1.1 KiB
C++
#ifndef REGRESSION_GRAPH_VIEW_H
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#define REGRESSION_GRAPH_VIEW_H
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#include <escher.h>
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#include "store.h"
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#include "../constant.h"
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#include "../shared/curve_view.h"
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namespace Regression {
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class GraphView : public Shared::CurveView {
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public:
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GraphView(Store * store, Shared::CurveViewCursor * cursor, Shared::BannerView * bannerView, View * cursorView);
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void drawRect(KDContext * ctx, KDRect rect) const override;
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private:
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char * label(Axis axis, int index) const override;
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float evaluateModelWithParameter(Model * curve, float t) const override;
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Store * m_store;
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char m_xLabels[k_maxNumberOfXLabels][Poincare::PrintFloat::bufferSizeForFloatsWithPrecision(Constant::ShortNumberOfSignificantDigits)];
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char m_yLabels[k_maxNumberOfYLabels][Poincare::PrintFloat::bufferSizeForFloatsWithPrecision(Constant::ShortNumberOfSignificantDigits)];
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/* We memoize the a and b of the regression y = ax+b to avoid recomputing them
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* for each stamp of the curve (since the computation is done with double
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* precision) */
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mutable float m_slope;
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mutable float m_yIntercept;
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};
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}
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#endif
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