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1. Drawing Experiment

wmnologoAbout 1 min

Routine Code

import lcd, image

lcd.init()
img = image.Image(size=(lcd.width(), lcd.height()))
img.draw_rectangle((0, 0, lcd.width(), lcd.height()), fill=True, color=(0, 81, 137))

img.draw_string(50, 10, "Hello", color=(255, 255, 255), scale=2)
img.draw_line(50, 50, 200, 50, color=(100, 0, 0), thickness=5)
img.draw_rectangle(50, 60, 150, 150, color=(0, 100, 0), thickness=2, fill=True)
img.draw_circle(125, 135, 50, color=(255, 255, 255), thickness=2, fill=False)

lcd.display(img)

Experiment Preparation

    1. Connect the K210 to your computer via USB.
    1. Open CanMV IDE and run the routine code above.

Experiment Results

After running, the K210 LCD screen displays the following pattern:

Routine Code Explanation

    1. Import the modules required to run the routine.
import lcd, image
    1. Initialize the LCD screen.
lcd.init()
    1. Create an image object the same size as the LCD screen.
img = image.Image(size=(lcd.width(), lcd.height()))
    1. Draw a filled rectangle covering the entire image area. Parameters: (top-left x, top-left y, bottom-right x, bottom-right y). fill=True means fill the shape; color specifies the color (RGB value (0, 81, 137) here).
img.draw_rectangle((0, 0, lcd.width(), lcd.height()), fill=True, color=(0, 81, 137))
    1. Draw the string "Hello" at position (x=50, y=10). color sets the text color to white (RGB (255, 255, 255)); scale=2 sets the font scale factor to 2.
img.draw_string(50, 10, "Hello", color=(255, 255, 255), scale=2)
    1. Draw a line on the image. Parameters: (start x, start y, end x, end y). color is RGB (100, 0, 0); thickness=5 sets line width to 5 pixels.
img.draw_line(50, 50, 200, 50, color=(100, 0, 0), thickness=5)
    1. Draw a rectangle on the image. Parameters: (top-left x, top-left y, bottom-right x, bottom-right y). color is RGB (0, 100, 0); thickness=2 sets border width to 2 pixels; fill=True fills the shape.
img.draw_rectangle(50, 60, 150, 150, color=(0, 100, 0), thickness=2, fill=True)
    1. Draw a circle on the image. Parameters: (center x, center y, radius). color is white (RGB (255, 255, 255)); thickness=2 sets border width to 2 pixels; fill=False leaves the interior unfilled.
img.draw_circle(125, 135, 50, color=(255, 255, 255), thickness=2, fill=False)
    1. Display the drawn image on the LCD screen.
lcd.display(img)
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