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/**
* @file lv_vglite_path.c
*
*/
/**
* Copyright 2023 NXP
*
* SPDX-License-Identifier: MIT
*/
/*********************
* INCLUDES
*********************/
#include "lv_vglite_path.h"
#if LV_USE_DRAW_VGLITE
#include "vg_lite.h"
/*********************
* DEFINES
*********************/
/**********************
* TYPEDEFS
**********************/
/**********************
* STATIC PROTOTYPES
**********************/
/**********************
* STATIC VARIABLES
**********************/
/**********************
* MACROS
**********************/
/**********************
* GLOBAL FUNCTIONS
**********************/
void vglite_create_rect_path_data(int32_t * path_data, uint32_t * path_data_size,
int32_t radius,
const lv_area_t * coords)
{
int32_t rect_width = lv_area_get_width(coords);
int32_t rect_height = lv_area_get_height(coords);
/* Get the final radius. Can't be larger than the half of the shortest side */
int32_t shortest_side = LV_MIN(rect_width, rect_height);
int32_t final_radius = LV_MIN(radius, shortest_side / 2);
/* Path data element index */
uint8_t pidx = 0;
if((radius == (int32_t)LV_RADIUS_CIRCLE) && (rect_width == rect_height)) {
/* Get the control point offset for rounded cases */
int32_t cpoff = (int32_t)((float)final_radius * BEZIER_OPTIM_CIRCLE);
/* Circle case */
/* Starting point */
path_data[pidx++] = VLC_OP_MOVE;
path_data[pidx++] = coords->x1 + final_radius;
path_data[pidx++] = coords->y1;
/* Top-right arc */
path_data[pidx++] = VLC_OP_CUBIC_REL;
path_data[pidx++] = cpoff;
path_data[pidx++] = 0;
path_data[pidx++] = final_radius;
path_data[pidx++] = final_radius - cpoff;
path_data[pidx++] = final_radius;
path_data[pidx++] = final_radius;
/* Bottom-right arc*/
path_data[pidx++] = VLC_OP_CUBIC_REL;
path_data[pidx++] = 0;
path_data[pidx++] = cpoff;
path_data[pidx++] = cpoff - final_radius;
path_data[pidx++] = final_radius;
path_data[pidx++] = 0 - final_radius;
path_data[pidx++] = final_radius;
/* Bottom-left arc */
path_data[pidx++] = VLC_OP_CUBIC_REL;
path_data[pidx++] = 0 - cpoff;
path_data[pidx++] = 0;
path_data[pidx++] = 0 - final_radius;
path_data[pidx++] = cpoff - final_radius;
path_data[pidx++] = 0 - final_radius;
path_data[pidx++] = 0 - final_radius;
/* Top-left arc*/
path_data[pidx++] = VLC_OP_CUBIC_REL;
path_data[pidx++] = 0;
path_data[pidx++] = 0 - cpoff;
path_data[pidx++] = final_radius - cpoff;
path_data[pidx++] = 0 - final_radius;
path_data[pidx++] = final_radius;
path_data[pidx++] = 0 - final_radius;
/* Ending point */
path_data[pidx++] = VLC_OP_END;
}
else if(radius > 0) {
/* Get the control point offset for rounded cases */
int32_t cpoff = (int32_t)((float)final_radius * BEZIER_OPTIM_CIRCLE);
/* Rounded rectangle case */
/* Starting point */
path_data[pidx++] = VLC_OP_MOVE;
path_data[pidx++] = coords->x1 + final_radius;
path_data[pidx++] = coords->y1;
/* Top side */
path_data[pidx++] = VLC_OP_LINE;
path_data[pidx++] = coords->x2 - final_radius + 1; /*Extended for VGLite*/
path_data[pidx++] = coords->y1;
/* Top-right corner */
path_data[pidx++] = VLC_OP_CUBIC_REL;
path_data[pidx++] = cpoff;
path_data[pidx++] = 0;
path_data[pidx++] = final_radius;
path_data[pidx++] = final_radius - cpoff;
path_data[pidx++] = final_radius;
path_data[pidx++] = final_radius;
/* Right side */
path_data[pidx++] = VLC_OP_LINE;
path_data[pidx++] = coords->x2 + 1; /*Extended for VGLite*/
path_data[pidx++] = coords->y2 - final_radius + 1; /*Extended for VGLite*/
/* Bottom-right corner*/
path_data[pidx++] = VLC_OP_CUBIC_REL;
path_data[pidx++] = 0;
path_data[pidx++] = cpoff;
path_data[pidx++] = cpoff - final_radius;
path_data[pidx++] = final_radius;
path_data[pidx++] = 0 - final_radius;
path_data[pidx++] = final_radius;
/* Bottom side */
path_data[pidx++] = VLC_OP_LINE;
path_data[pidx++] = coords->x1 + final_radius;
path_data[pidx++] = coords->y2 + 1; /*Extended for VGLite*/
/* Bottom-left corner */
path_data[pidx++] = VLC_OP_CUBIC_REL;
path_data[pidx++] = 0 - cpoff;
path_data[pidx++] = 0;
path_data[pidx++] = 0 - final_radius;
path_data[pidx++] = cpoff - final_radius;
path_data[pidx++] = 0 - final_radius;
path_data[pidx++] = 0 - final_radius;
/* Left side*/
path_data[pidx++] = VLC_OP_LINE;
path_data[pidx++] = coords->x1;
path_data[pidx++] = coords->y1 + final_radius;
/* Top-left corner */
path_data[pidx++] = VLC_OP_CUBIC_REL;
path_data[pidx++] = 0;
path_data[pidx++] = 0 - cpoff;
path_data[pidx++] = final_radius - cpoff;
path_data[pidx++] = 0 - final_radius;
path_data[pidx++] = final_radius;
path_data[pidx++] = 0 - final_radius;
/* Ending point */
path_data[pidx++] = VLC_OP_END;
}
else {
/* Non-rounded rectangle case */
/* Starting point */
path_data[pidx++] = VLC_OP_MOVE;
path_data[pidx++] = coords->x1;
path_data[pidx++] = coords->y1;
/* Top side */
path_data[pidx++] = VLC_OP_LINE;
path_data[pidx++] = coords->x2 + 1; /*Extended for VGLite*/
path_data[pidx++] = coords->y1;
/* Right side */
path_data[pidx++] = VLC_OP_LINE;
path_data[pidx++] = coords->x2 + 1; /*Extended for VGLite*/
path_data[pidx++] = coords->y2 + 1; /*Extended for VGLite*/
/* Bottom side */
path_data[pidx++] = VLC_OP_LINE;
path_data[pidx++] = coords->x1;
path_data[pidx++] = coords->y2 + 1; /*Extended for VGLite*/
/* Left side*/
path_data[pidx++] = VLC_OP_LINE;
path_data[pidx++] = coords->x1;
path_data[pidx++] = coords->y1;
/* Ending point */
path_data[pidx++] = VLC_OP_END;
}
/* Resulting path size */
*path_data_size = pidx * sizeof(int32_t);
}
/**********************
* STATIC FUNCTIONS
**********************/
#endif /*LV_USE_DRAW_VGLITE*/
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