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44 lines
1.2 KiB
C++
44 lines
1.2 KiB
C++
#ifndef GRAPH_FUNCTION_H
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#define GRAPH_FUNCTION_H
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#include <poincare.h>
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#include <kandinsky.h>
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namespace Graph {
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class Function {
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public:
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static constexpr const char * Parameter = "(x)";
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Function(const char * text = nullptr, KDColor color = KDColorBlack);
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~Function(); // Delete expression and layout, if needed
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const char * text();
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const char * name();
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KDColor color() const { return m_color; }
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Expression * expression();
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ExpressionLayout * layout();
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bool isActive();
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void setActive(bool active);
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bool displayDerivative();
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void setDisplayDerivative(bool display);
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void setContent(const char * c);
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void setColor(KDColor m_color);
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float evaluateAtAbscissa(float x, Context * context, Expression::AngleUnit angleUnit) const;
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float approximateDerivative(float x, Context * context, Expression::AngleUnit angleUnit) const;
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private:
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constexpr static float k_epsilon = 0.0001f;
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constexpr static float k_precision = 0.01f;
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constexpr static int k_bodyLength = 255;
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char m_text[k_bodyLength];
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const char * m_name;
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KDColor m_color;
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Expression * m_expression;
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ExpressionLayout * m_layout;
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bool m_active;
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bool m_displayDerivative;
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};
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}
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#endif
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