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https://github.com/DarkFlippers/unleashed-firmware.git
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117 lines
2.3 KiB
C
117 lines
2.3 KiB
C
//
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// Doofy's Math library
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//
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#pragma once
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typedef struct {
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float x;
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float y;
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} Vector;
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#define min(a, b) ((a) < (b) ? (a) : (b))
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#define max(a, b) ((a) > (b) ? (a) : (b))
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#define abs(x) ((x) > 0 ? (x) : -(x))
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/**
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* Lerp function
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*
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* @param v0 Start value
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* @param v1 End value
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* @param t Time (0-1 range)
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* @return Point between v0-v1 at a given time
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*/
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float lerp(float v0, float v1, float t);
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/**
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* 2D lerp function
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*
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* @param start Start vector
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* @param end End vector
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* @param t Time (0-1 range)
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* @return 2d Vector between start and end at time
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*/
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Vector lerp_2d(Vector start, Vector end, float t);
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/**
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* Quadratic lerp function
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*
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* @param start Start vector
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* @param control Control point
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* @param end End vector
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* @param t Time (0-1 range)
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* @return 2d Vector at time
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*/
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Vector quadratic_2d(Vector start, Vector control, Vector end, float t);
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/**
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* Add vector components together
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*
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* @param a First vector
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* @param b Second vector
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* @return Resulting vector
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*/
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Vector vector_add(Vector a, Vector b);
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/**
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* Subtract vector components together
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*
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* @param a First vector
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* @param b Second vector
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* @return Resulting vector
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*/
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Vector vector_sub(Vector a, Vector b);
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/**
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* Multiplying vector components together
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*
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* @param a First vector
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* @param b Second vector
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* @return Resulting vector
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*/
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Vector vector_mul_components(Vector a, Vector b);
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/**
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* Dividing vector components
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*
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* @param a First vector
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* @param b Second vector
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* @return Resulting vector
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*/
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Vector vector_div_components(Vector a, Vector b);
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/**
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* Calculating Vector length
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*
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* @param a Direction vector
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* @return Length of the vector
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*/
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float vector_magnitude(Vector a);
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/**
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* Get a normalized vector (length of 1)
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*
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* @param a Direction vector
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* @return Normalized vector
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*/
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Vector vector_normalized(Vector a);
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/**
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* Calculate two vector's distance
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*
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* @param a First vector
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* @param b Second vector
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* @return Distance between vectors
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*/
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float vector_distance(Vector a, Vector b);
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/**
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* Calculate the dot product of the vectors.
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* No need to normalize, it will do it
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*
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* @param a First vector
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* @param b Second vector
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* @return value from -1 to 1
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*/
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float vector_dot(Vector a, Vector b);
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