diff options
Diffstat (limited to 'src/libs/lvgl/src/lv_draw/lv_draw_arc.c')
| m--------- | src/libs/lvgl | 0 | ||||
| -rw-r--r-- | src/libs/lvgl/src/lv_draw/lv_draw_arc.c | 251 |
2 files changed, 251 insertions, 0 deletions
diff --git a/src/libs/lvgl b/src/libs/lvgl deleted file mode 160000 -Subproject ee95d1c9cf74899585f9165458911f2d54ca750 diff --git a/src/libs/lvgl/src/lv_draw/lv_draw_arc.c b/src/libs/lvgl/src/lv_draw/lv_draw_arc.c new file mode 100644 index 0000000..5b19a12 --- /dev/null +++ b/src/libs/lvgl/src/lv_draw/lv_draw_arc.c @@ -0,0 +1,251 @@ +/** + * @file lv_draw_arc.c + * + */ + +/********************* + * INCLUDES + *********************/ +#include "lv_draw_arc.h" +#include "../lv_misc/lv_math.h" + +/********************* + * DEFINES + *********************/ + +/********************** + * TYPEDEFS + **********************/ + +/********************** + * STATIC PROTOTYPES + **********************/ +static void ver_line(lv_coord_t x, lv_coord_t y, const lv_area_t * mask, lv_coord_t len, lv_color_t color, + lv_opa_t opa); +static void hor_line(lv_coord_t x, lv_coord_t y, const lv_area_t * mask, lv_coord_t len, lv_color_t color, + lv_opa_t opa); +static bool deg_test_norm(uint16_t deg, uint16_t start, uint16_t end); +static bool deg_test_inv(uint16_t deg, uint16_t start, uint16_t end); + +/********************** + * STATIC VARIABLES + **********************/ + +/********************** + * MACROS + **********************/ + +/********************** + * GLOBAL FUNCTIONS + **********************/ + +/** + * Draw an arc. (Can draw pie too with great thickness.) + * @param center_x the x coordinate of the center of the arc + * @param center_y the y coordinate of the center of the arc + * @param radius the radius of the arc + * @param mask the arc will be drawn only in this mask + * @param start_angle the start angle of the arc (0 deg on the bottom, 90 deg on the right) + * @param end_angle the end angle of the arc + * @param style style of the arc (`body.thickness`, `body.main_color`, `body.opa` is used) + * @param opa_scale scale down all opacities by the factor + */ +void lv_draw_arc(lv_coord_t center_x, lv_coord_t center_y, uint16_t radius, const lv_area_t * mask, + uint16_t start_angle, uint16_t end_angle, const lv_style_t * style, lv_opa_t opa_scale) +{ + lv_coord_t thickness = style->line.width; + if(thickness > radius) thickness = radius; + +#if LV_ANTIALIAS + thickness--; + radius--; +#endif + + lv_coord_t r_out = radius; + lv_coord_t r_in = r_out - thickness; + int16_t deg_base; + int16_t deg; + lv_coord_t x_start[4]; + lv_coord_t x_end[4]; + + lv_color_t color = style->line.color; + lv_opa_t opa = opa_scale == LV_OPA_COVER ? style->body.opa : (uint16_t)((uint16_t)style->body.opa * opa_scale) >> 8; + + bool (*deg_test)(uint16_t, uint16_t, uint16_t); + if(start_angle <= end_angle) + deg_test = deg_test_norm; + else + deg_test = deg_test_inv; + + int middle_r_out = r_out; +#if !LV_ANTIALIAS + thickness--; + middle_r_out = r_out - 1; +#endif + if(deg_test(270, start_angle, end_angle)) + hor_line(center_x - middle_r_out, center_y, mask, thickness, color, opa); /*Left Middle*/ + if(deg_test(90, start_angle, end_angle)) + hor_line(center_x + r_in, center_y, mask, thickness, color, opa); /*Right Middle*/ + if(deg_test(180, start_angle, end_angle)) + ver_line(center_x, center_y - middle_r_out, mask, thickness, color, opa); /*Top Middle*/ + if(deg_test(0, start_angle, end_angle)) + ver_line(center_x, center_y + r_in, mask, thickness, color, opa); /*Bottom middle*/ + + uint32_t r_out_sqr = r_out * r_out; + uint32_t r_in_sqr = r_in * r_in; +#if LV_ANTIALIAS + uint32_t r_out_aa_sqr = (r_out + 1) * (r_out + 1); + uint32_t r_in_aa_sqr = (r_in - 1) * (r_in - 1); +#endif + int16_t xi; + int16_t yi; + for(yi = -r_out; yi < 0; yi++) { + x_start[0] = LV_COORD_MIN; + x_start[1] = LV_COORD_MIN; + x_start[2] = LV_COORD_MIN; + x_start[3] = LV_COORD_MIN; + x_end[0] = LV_COORD_MIN; + x_end[1] = LV_COORD_MIN; + x_end[2] = LV_COORD_MIN; + x_end[3] = LV_COORD_MIN; + int xe = 0; + for(xi = -r_out; xi < 0; xi++) { + + uint32_t r_act_sqr = xi * xi + yi * yi; +#if LV_ANTIALIAS + if(r_act_sqr > r_out_aa_sqr) { + continue; + } +#else + if(r_act_sqr > r_out_sqr) continue; +#endif + + deg_base = lv_atan2(xi, yi) - 180; + +#if LV_ANTIALIAS + int opa2 = -1; + if(r_act_sqr > r_out_sqr) { + opa2 = LV_OPA_100 * (r_out + 1) - lv_sqrt(LV_OPA_100 * LV_OPA_100 * r_act_sqr); + if(opa2 < LV_OPA_0) + opa2 = LV_OPA_0; + else if(opa2 > LV_OPA_100) + opa2 = LV_OPA_100; + } else if(r_act_sqr < r_in_sqr) { + if(xe == 0) xe = xi; + opa2 = lv_sqrt(LV_OPA_100 * LV_OPA_100 * r_act_sqr) - LV_OPA_100 * (r_in - 1); + if(opa2 < LV_OPA_0) + opa2 = LV_OPA_0; + else if(opa2 > LV_OPA_100) + opa2 = LV_OPA_100; + if(r_act_sqr < r_in_aa_sqr) + break; /*No need to continue the iteration in x once we found the inner edge of the + arc*/ + } + if(opa2 != -1) { + if(deg_test(180 + deg_base, start_angle, end_angle)) { + lv_draw_px(center_x + xi, center_y + yi, mask, color, opa2); + } + if(deg_test(360 - deg_base, start_angle, end_angle)) { + lv_draw_px(center_x + xi, center_y - yi, mask, color, opa2); + } + if(deg_test(180 - deg_base, start_angle, end_angle)) { + lv_draw_px(center_x - xi, center_y + yi, mask, color, opa2); + } + if(deg_test(deg_base, start_angle, end_angle)) { + lv_draw_px(center_x - xi, center_y - yi, mask, color, opa2); + } + continue; + } +#endif + + deg = 180 + deg_base; + if(deg_test(deg, start_angle, end_angle)) { + if(x_start[0] == LV_COORD_MIN) x_start[0] = xi; + } else if(x_start[0] != LV_COORD_MIN && x_end[0] == LV_COORD_MIN) { + x_end[0] = xi - 1; + } + + deg = 360 - deg_base; + if(deg_test(deg, start_angle, end_angle)) { + if(x_start[1] == LV_COORD_MIN) x_start[1] = xi; + } else if(x_start[1] != LV_COORD_MIN && x_end[1] == LV_COORD_MIN) { + x_end[1] = xi - 1; + } + + deg = 180 - deg_base; + if(deg_test(deg, start_angle, end_angle)) { + if(x_start[2] == LV_COORD_MIN) x_start[2] = xi; + } else if(x_start[2] != LV_COORD_MIN && x_end[2] == LV_COORD_MIN) { + x_end[2] = xi - 1; + } + + deg = deg_base; + if(deg_test(deg, start_angle, end_angle)) { + if(x_start[3] == LV_COORD_MIN) x_start[3] = xi; + } else if(x_start[3] != LV_COORD_MIN && x_end[3] == LV_COORD_MIN) { + x_end[3] = xi - 1; + } + + if(r_act_sqr < r_in_sqr) { + xe = xi; + break; /*No need to continue the iteration in x once we found the inner edge of the + arc*/ + } + } + + if(x_start[0] != LV_COORD_MIN) { + if(x_end[0] == LV_COORD_MIN) x_end[0] = xe - 1; + hor_line(center_x + x_start[0], center_y + yi, mask, x_end[0] - x_start[0], color, opa); + } + + if(x_start[1] != LV_COORD_MIN) { + if(x_end[1] == LV_COORD_MIN) x_end[1] = xe - 1; + hor_line(center_x + x_start[1], center_y - yi, mask, x_end[1] - x_start[1], color, opa); + } + + if(x_start[2] != LV_COORD_MIN) { + if(x_end[2] == LV_COORD_MIN) x_end[2] = xe - 1; + hor_line(center_x - x_end[2], center_y + yi, mask, LV_MATH_ABS(x_end[2] - x_start[2]), color, opa); + } + + if(x_start[3] != LV_COORD_MIN) { + if(x_end[3] == LV_COORD_MIN) x_end[3] = xe - 1; + hor_line(center_x - x_end[3], center_y - yi, mask, LV_MATH_ABS(x_end[3] - x_start[3]), color, opa); + } + } +} + +/********************** + * STATIC FUNCTIONS + **********************/ +static void ver_line(lv_coord_t x, lv_coord_t y, const lv_area_t * mask, lv_coord_t len, lv_color_t color, lv_opa_t opa) +{ + lv_area_t area; + lv_area_set(&area, x, y, x, y + len); + + lv_draw_fill(&area, mask, color, opa); +} + +static void hor_line(lv_coord_t x, lv_coord_t y, const lv_area_t * mask, lv_coord_t len, lv_color_t color, lv_opa_t opa) +{ + lv_area_t area; + lv_area_set(&area, x, y, x + len, y); + + lv_draw_fill(&area, mask, color, opa); +} + +static bool deg_test_norm(uint16_t deg, uint16_t start, uint16_t end) +{ + if(deg >= start && deg <= end) + return true; + else + return false; +} + +static bool deg_test_inv(uint16_t deg, uint16_t start, uint16_t end) +{ + if(deg >= start || deg <= end) { + return true; + } else + return false; +} |