Drawing dashed line in at any angle in the screen. How draw dashed line that can be placed at anywhere in the screen at any angle?

How-to
1

What do you want to achieve?

I want to draw a dashed line (6 dashes). That can be placed at anywhere in the screen at any angle. I drawn a dashed line at vertically and horizontally, but can’t draw at any other angle.

lv_obj_t *canvas = lv_canvas_create(lv_scr_act());

lv_color_t cbuf[LV_CANVAS_BUF_SIZE_TRUE_COLOR(CANVAS_WIDTH, CANVAS_HEIGHT)];

lv_canvas_set_buffer(canvas, cbuf, CANVAS_WIDTH, CANVAS_HEIGHT, LV_IMG_CF_TRUE_COLOR);

lv_obj_set_pos(canvas, 50, 50); // initial position

lv_canvas_fill_bg(canvas, lv_color_white(), LV_OPA_COVER);

lv_point_t start = {20, 20};

lv_point_t end = {200, 100}; // Any angle you want

draw_dashed_line(canvas, start, end, 6, lv_color_hex(0xFF0000));?

Code to reproduce

/*You code here*/

Screenshot and/or video

Environment

  • MCU/MPU/Board: Zynq7020
  • LVGL version: 8.3.5