Custom Shape

In the previous project, we made a Christmas tree with point coordinates. In this project, we used straight lines to piece together a pattern of Pac-Man.

Run the code

When the program runs, you will see a Pac-Man appearing on the RGB Matrix HAT, and its mouth is continuously opening and closing.

cd /home/pi/rgb_matrix/raspberrypi
sudo python3 custom_shape.py

Code

Note

You can Modify/Reset/Copy/Run/Stop the code below. But before that, you need to go to source code path like rgb_matrix/raspberrypi. After modifying the code, you can run it directly to see the effect.

from rgb_matrix import RGB_Matrix
import time
import random

def pacman():

    rectangle_coor = [0,0,7,7]

    list = [[2,0,5,0],
            [1,1,6,1],
            [0,2,1,2],
            [3,2,5,2],
            [0,3,4,3],
            [0,4,4,4],
            [0,5,5,5],
            [1,6,6,6],
            [2,7,5,7]]

    fill = (144,192,22)
    for i in list:
        rr.draw_line(i,fill)

    rr.display()
    time.sleep(1)

    rr.draw_rectangle(rectangle_coor,fill=(0,0,0))

def pacman2():

    rectangle_coor = [0,0,7,7]

    list = [[2,0,5,0],
            [1,1,6,1],
            [0,2,1,2],
            [3,2,7,2],
            [0,3,7,3],
            [0,4,3,4],
            [0,5,7,5],
            [1,6,6,6],
            [2,7,5,7]]

    fill = (144,192,22)
    for i in list:
        rr.draw_line(i,fill)

    rr.display()
    time.sleep(1)

    rr.draw_rectangle(rectangle_coor,fill=(0,0,0))

if __name__ == "__main__":
    rr = RGB_Matrix(0X74)

    rectangle_coor = [0,0,7,7]

    while True:
        pacman()
        time.sleep(0.5)
        pacman2()

How it works?

def pacman():

    rectangle_coor = [0,0,7,7]

    list = [[2,0,5,0],
            [1,1,6,1],
            [0,2,1,2],
            [3,2,5,2],
            [0,3,4,3],
            [0,4,4,4],
            [0,5,5,5],
            [1,6,6,6],
            [2,7,5,7]]

def pacman2():

    rectangle_coor = [0,0,7,7]

    list = [[2,0,5,0],
            [1,1,6,1],
            [0,2,1,2],
            [3,2,7,2],
            [0,3,7,3],
            [0,4,3,4],
            [0,5,7,5],
            [1,6,6,6],
            [2,7,5,7]]

Define two functions pacman() and pacman2() to represent the two states of Pac-Man. These two states are composed of many lines, and two lists are defined to store the starting and ending coordinates of these lines respectively. rectangle_coor represents the entire RGB matrix HAT, which can be used to clear the screen.

fill = (144,192,22)
for i in list:
    rr.draw_line(i,fill)

rr.display()
time.sleep(1)

rr.draw_rectangle(rectangle_coor,fill=(0,0,0))

The above code exists in both functions pacman() and pacman2() and is used to display the 2 states of Pac-Man in yellow in the RGB Matrix HAT and then clear the screen.

while True:
    pacman()
    time.sleep(0.5)
    pacman2()

Call pacman() and pacman2() cyclically to increase the dynamic effect of Pac-Man.

You can also imagine other more interesting patterns, this website may be able to get some references.