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43 lines
1.0 KiB
43 lines
1.0 KiB
// From https://raw.githubusercontent.com/kerinin/arduino-splines/master/spline.h
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/*
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Library for 1-d splines
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Copyright Ryan Michael
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Licensed under the LGPLv3
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*/
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#ifndef spline_h
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#define spline_h
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#include "Arduino.h"
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#define Hermite 10
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#define Catmull 11
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class Spline
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{
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public:
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Spline( void );
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Spline( float x[], float y[], int numPoints, int degree = 1 );
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Spline( float x[], float y[], float m[], int numPoints );
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float value( float x );
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void setPoints( float x[], float y[], int numPoints );
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void setPoints( float x[], float y[], float m[], int numPoints );
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void setDegree( int degree );
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private:
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float calc( float, int);
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float* _x;
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float* _y;
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float* _m;
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int _degree;
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int _length;
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int _prev_point;
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float hermite( float t, float p0, float p1, float m0, float m1, float x0, float x1 );
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float hermite_00( float t );
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float hermite_10( float t );
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float hermite_01( float t );
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float hermite_11( float t );
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float catmull_tangent( int i );
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};
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#endif
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