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#pragma once
#include "consts.h"
/** @brief round time to nearest frame */
unsigned long clamp_time(unsigned long unclamped_time);
/** @brief 'zigzag' value between 0 and `size - 1`, like modulo (`%`) operator */
unsigned int zigzag(unsigned int size, int index);
/** @brief color leds on plane perpendicular to `direction` with `offset` */
void fill_plane(unsigned int direction, unsigned int offset);
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