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feat(math): add cubic-bezier function

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Signed-off-by: Neo Xu <neo.xu1990@gmail.com>
This commit is contained in:
Neo Xu
2023-05-28 18:10:42 +08:00
committed by Gabor Kiss-Vamosi
parent 65f031c2bd
commit 62ec011585
2 changed files with 235 additions and 0 deletions
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22
src/misc/lv_math.h
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@@ -64,6 +64,28 @@ static inline LV_ATTRIBUTE_FAST_MEM int32_t lv_trigo_cos(int16_t angle)
*/
uint32_t lv_bezier3(uint32_t t, uint32_t u0, uint32_t u1, uint32_t u2, uint32_t u3);
/**
* Calculate the y value of cubic-bezier(x1, y1, x2, y2) function as specified x.
* @param x time in range of [0..1024]
* @param x1 x of control point 1 in range of [0..1024]
* @param y1 y of control point 1 in range of [0..1024]
* @param x2 x of control point 2 in range of [0..1024]
* @param y2 y of control point 2 in range of [0..1024]
* @return the value calculated
*/
int32_t lv_cubic_bezier(int32_t x, int32_t x1, int32_t y1, int32_t x2, int32_t y2);
/**
* Calculate the y value of cubic-bezier(x1, y1, x2, y2) function as specified x.
* @param x time in range of [0..1]
* @param x1 x of control point 1 in range of [0..1]
* @param y1 y of control point 1 in range of [0..1]
* @param x2 x of control point 2 in range of [0..1]
* @param y2 y of control point 2 in range of [0..1]
* @return the value calculated
*/
float lv_cubic_bezier_f(float x, float x1, float y1, float x2, float y2);
/**
* Calculate the atan2 of a vector.
* @param x