Car screen display control

1. Experimental purpose

Drive the car screen to display graphics and text

2. Experimental path source code

Enter the car system, end the car program, enter "ip (ip is the car's ip): 8888" in the browser, enter the password "yahboom" Then log in Enter the path of Rider-pi_class/2.Basic Control Ooperations/1.Small car screen display and run car lcd control.ipynb.

3. Experimental phenomenon

Draw an oblique straight line
Draw a circle
Draw a rectangle
Display text
Display an image

4. Analysis of main source code parameters

Draw a straight line lcd_line(x1,y1,x2,y2,color=(r,g,b),width=width)

Parameter name	Format	Input range	Description
x1,y1,x2,y2	Number	x1 x2:[0,320] y1 y2:[0,240]	x1,y1 are the initial point x2,y2 are the end point coordinates
color (optional) defaults to white	rgb tuple	rgb:[0,255]	color is the line color
width (optional) defaults to 2	Number	/	width is the line width

Draw a circle lcd_round(center_x, center_y, radius, color=(255, 255, 255), width=2)

Parameter name	Format	Input range	Description
center_x, center_y	Number	center_x:[0,320] center_y:[0,240]	center_x, center_y are the coordinates of the center of the circle
raduius	Number	/	raduius is the radius
color (optional) defaults to white	rgb tuple	rgb:[0,255]	color is the color
width (optional) defaults to 2	Number	/	width is the arc width

Draw a rectangle lcd_rectangle(x1,y1,x2,y2,fill=None,outline=(255,255,255),width=2)

Parameter name	Format	Input range	Description
x1,y1,x2,y2	Number	x1 x2:[0,320] y1 y2:[0,240]	x1,y1 are the initial point x2,y2 are the end point coordinates
fill (can be omitted) defaults to none	rgb tuple	rgb:[0,255]	fill is the fill color
outline (can be omitted) defaults to white	rgb tuple	rgb:[0,255]	outline is the line color
width (can be omitted) defaults to 2	Number	/	width is the line width

Display text lcd_text(x,y,content,color=(255,255,255),fontsize=15)

Parameter name	Format	Input range	Description
x,y	Number	x y:[0,320]	x,y are the initial points
content	string	/	content is the display content
color (optional) defaults to white	rgb tuple	r g b:[0,255]	color is the text color
fontsize (optional) defaults to 15	Number	/	fontsize is the font size

Display pictures lcd_picture(filename)

Parameter name	Format	Description
filename	string	The picture file name needs to have a jpg extension, the picture file display path is /home/pi/xgoPictures, and the picture size is 320*240

If you want to display custom pictures, you need to put the pictures in the path of home/pi/xgoPictures.