huxi
149 lines
4.1 KiB
C
149 lines
4.1 KiB
C
/**
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* @file ui_animation_math.h
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*
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*/
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#ifndef _UI_ANIMATION_MATH_H
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#define _UI_ANIMATION_MATH_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*********************
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* INCLUDES
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*********************/
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#include <stdint.h>
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/*********************
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* DEFINES
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*********************/
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#define UI_TRIGO_SIN_MAX 32767
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#define UI_TRIGO_SHIFT 15 /**< >> UI_TRIGO_SHIFT to normalize*/
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#define UI_BEZIER_VAL_MAX 1024 /**< Max time in Bezier functions (not [0..1] to use integers)*/
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#define UI_BEZIER_VAL_SHIFT 10 /**< log2(UI_BEZIER_VAL_MAX): used to normalize up scaled values*/
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#define UI_ATTRIBUTE_FAST_MEM
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/**********************
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* TYPEDEFS
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**********************/
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typedef struct {
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uint16_t i;
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uint16_t f;
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} ui_sqrt_res_t;
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/**********************
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* GLOBAL PROTOTYPES
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**********************/
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//! @cond Doxygen_Suppress
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/**
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* Return with sinus of an angle
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* @param angle
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* @return sinus of 'angle'. sin(-90) = -32767, sin(90) = 32767
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*/
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UI_ATTRIBUTE_FAST_MEM int16_t ui_trigo_sin(int16_t angle);
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static inline UI_ATTRIBUTE_FAST_MEM int16_t ui_trigo_cos(int16_t angle)
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{
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return ui_trigo_sin(angle + 90);
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}
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//! @endcond
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/**
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* Calculate a value of a Cubic Bezier function.
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* @param t time in range of [0..UI_BEZIER_VAL_MAX]
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* @param u0 start values in range of [0..UI_BEZIER_VAL_MAX]
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* @param u1 control value 1 values in range of [0..UI_BEZIER_VAL_MAX]
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* @param u2 control value 2 in range of [0..UI_BEZIER_VAL_MAX]
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* @param u3 end values in range of [0..UI_BEZIER_VAL_MAX]
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* @return the value calculated from the given parameters in range of [0..UI_BEZIER_VAL_MAX]
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*/
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uint32_t ui_bezier3(uint32_t t, uint32_t u0, uint32_t u1, uint32_t u2, uint32_t u3);
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/**
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* Calculate the atan2 of a vector.
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* @param x
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* @param y
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* @return the angle in degree calculated from the given parameters in range of [0..360]
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*/
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uint16_t ui_atan2(int x, int y);
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//! @cond Doxygen_Suppress
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/**
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* Get the square root of a number
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* @param x integer which square root should be calculated
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* @param q store the result here. q->i: integer part, q->f: fractional part in 1/256 unit
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* @param mask optional to skip some iterations if the magnitude of the root is known.
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* Set to 0x8000 by default.
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* If root < 16: mask = 0x80
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* If root < 256: mask = 0x800
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* Else: mask = 0x8000
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*/
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UI_ATTRIBUTE_FAST_MEM void ui_sqrt(uint32_t x, ui_sqrt_res_t *q, uint32_t mask);
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//! @endcond
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/**
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* Calculate the integer exponents.
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* @param base
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* @param power
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* @return base raised to the power exponent
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*/
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int64_t ui_pow(int64_t base, int8_t exp);
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/**
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* Get the mapped of a number given an input and output range
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* @param x integer which mapped value should be calculated
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* @param min_in min input range
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* @param max_in max input range
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* @param min_out max output range
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* @param max_out max output range
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* @return the mapped number
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*/
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int32_t ui_map(int32_t x, int32_t min_in, int32_t max_in, int32_t min_out, int32_t max_out);
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/**
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* Get a pseudo random number in the given range
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* @param min the minimum value
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* @param max the maximum value
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* @return return the random number. min <= return_value <= max
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*/
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uint32_t ui_rand(uint32_t min, uint32_t max);
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/**********************
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* MACROS
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**********************/
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#define UI_MIN(a, b) ((a) < (b) ? (a) : (b))
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#define UI_MIN3(a, b, c) (UI_MIN(UI_MIN(a,b), c))
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#define UI_MIN4(a, b, c, d) (UI_MIN(UI_MIN(a,b), UI_MIN(c,d)))
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#define UI_MAX(a, b) ((a) > (b) ? (a) : (b))
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#define UI_MAX3(a, b, c) (UI_MAX(UI_MAX(a,b), c))
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#define UI_MAX4(a, b, c, d) (UI_MAX(UI_MAX(a,b), UI_MAX(c,d)))
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#define UI_CLAMP(min, val, max) (UI_MAX(min, (UI_MIN(val, max))))
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#define UI_ABS(x) ((x) > 0 ? (x) : (-(x)))
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#define UI_UDIV255(x) (((x) * 0x8081U) >> 0x17)
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#define UI_IS_SIGNED(t) (((t)(-1)) < ((t)0))
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#define UI_UMAX_OF(t) (((0x1ULL << ((sizeof(t) * 8ULL) - 1ULL)) - 1ULL) | (0xFULL << ((sizeof(t) * 8ULL) - 4ULL)))
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#define UI_SMAX_OF(t) (((0x1ULL << ((sizeof(t) * 8ULL) - 1ULL)) - 1ULL) | (0x7ULL << ((sizeof(t) * 8ULL) - 4ULL)))
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#define UI_MAX_OF(t) ((unsigned long)(UI_IS_SIGNED(t) ? UI_SMAX_OF(t) : UI_UMAX_OF(t)))
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#ifdef __cplusplus
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} /*extern "C"*/
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#endif
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#endif
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