Pygame 中的意外绘图

如何解决Pygame 中的意外绘图

我正在 pygame 中制作声音可视化器。 这是我的源代码：

#importing packages
import pygame,math
import sounddevice as sd

#colors 
COLOR = {
    'Black':[0,0],'White':[255,255,255],'Red':{255,0},'Yellow':[255,'Green':[0,'Blue':[0,255]
    }


#function to get value equal to or between min and max value

def clamp(min_value,max_value,value):

    if value < min_value:
        return min_value

    if value > max_value:
        return max_value

    return value

# class to draw bars in drawing

class AudioBar:

    def __init__(self,cx,cy,color,angle,width=1,min_height=20,max_height=300,extend=False):

        self.cx,self.cy= cx,cy

        self.color = color
        self.prev_height = min_height
        self.width,self.min_height,self.max_height = width,min_height,max_height

        self.angle = math.radians(angle)
        self.ax,self.ay=cx,cy

     # update position of bar
    def update(self,height):
        height = height * 1000
        height = clamp(self.min_height,self.max_height,height)
        if height<self.prev_height:
            height = self.prev_height -(height*0.1)
        else:
            height = self.prev_height + (height*0.1)
        self.ax = self.cx+(math.sin(self.angle)*height)
        self.ay = self.cy+(math.cos(self.angle)*height)
        self.prev_height = height
        return self
    # for rendering on screen
    def render(self,screen)->None:
        pygame.draw.line(screen,self.color,[self.cx,self.cy],[self.ax,self.ay],self.width)

# function to get data from input stream

#i am not get live data . help!

def getData() -> list:
    data,_ = stream.read(360)
    data = data.flatten()
    return data

# main function
def main()-> None:
    pygame.init()
    screen = pygame.display.set_mode([500,500])
    
    bars =[]
#range is 360 to draw lines on 360 angles
    for angle in range(360):
        bars.append(
            AudioBar(
                250,250,COLOR['Black'],angle))
    while True:
        data= getData()
        
        screen.fill(COLOR['White'])
        for i,d in enumerate(data):
            bars[i].update(d).render(screen)
        pygame.display.flip()
            

try:
    stream = sd.InputStream(
        device=1,channels=1)
    with stream:
        main()
except Exception as e:
    raise e

效果很好，但是 绘图中有不需要的加号+ 某种图案。

这能解决吗？

还有一件事是毫无疑问的，在 stream 中，我得到的数据不是新的而是旧的，之后会被渲染。我想要实时数据。而且它看起来不错。