Picklock_RCM/bdk/libs/lvgl/lv_misc/lv_circ.h

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2020-06-26 22:17:06 +02:00
/**
* @file lv_circ.h
*
*/
#ifndef LV_CIRC_H
#define LV_CIRC_H
#ifdef __cplusplus
extern "C" {
#endif
/*********************
* INCLUDES
*********************/
#include <stddef.h>
#include "lv_area.h"
#include <utils/types.h>
/*********************
* DEFINES
*********************/
#define LV_CIRC_OCT1_X(p) (p.x)
#define LV_CIRC_OCT1_Y(p) (p.y)
#define LV_CIRC_OCT2_X(p) (p.y)
#define LV_CIRC_OCT2_Y(p) (p.x)
#define LV_CIRC_OCT3_X(p) (-p.y)
#define LV_CIRC_OCT3_Y(p) (p.x)
#define LV_CIRC_OCT4_X(p) (-p.x)
#define LV_CIRC_OCT4_Y(p) (p.y)
#define LV_CIRC_OCT5_X(p) (-p.x)
#define LV_CIRC_OCT5_Y(p) (-p.y)
#define LV_CIRC_OCT6_X(p) (-p.y)
#define LV_CIRC_OCT6_Y(p) (-p.x)
#define LV_CIRC_OCT7_X(p) (p.y)
#define LV_CIRC_OCT7_Y(p) (-p.x)
#define LV_CIRC_OCT8_X(p) (p.x)
#define LV_CIRC_OCT8_Y(p) (-p.y)
/**********************
* TYPEDEFS
**********************/
/**********************
* GLOBAL PROTOTYPES
**********************/
/**
* Initialize the circle drawing
* @param c pointer to a point. The coordinates will be calculated here
* @param tmp point to a variable. It will store temporary data
* @param radius radius of the circle
*/
void lv_circ_init(lv_point_t * c, lv_coord_t * tmp, lv_coord_t radius);
/**
* Test the circle drawing is ready or not
* @param c same as in circ_init
* @return true if the circle is not ready yet
*/
bool lv_circ_cont(lv_point_t * c);
/**
* Get the next point from the circle
* @param c same as in circ_init. The next point stored here.
* @param tmp same as in circ_init.
*/
void lv_circ_next(lv_point_t * c, lv_coord_t * tmp);
/**********************
* MACROS
**********************/
#ifdef __cplusplus
} /* extern "C" */
#endif
#endif