Python一步一步教你用pyglet制作可播放音乐的扬声器类

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目录扬声器类1.绘制喇叭2.扬声器类3.禁音状态 4.设置状态5.切换状态6.播放音乐扬声器类1.绘制喇叭本篇将教你用pyglet画一个小喇叭，如上图。这里要用到pyglety库shapes模块中的圆弧Arc和多边形Pylygon画出这个扬声器的图片：Arc(x,y,radius,segments=None,angle=6.283185307179586,start_angle=0,closed=False,color=(255,255,255,255),batch=None,group=None)x,y是圆弧的圆心坐标；radius是半径；angle是圆心角的弧度数；start_angle是圆弧起始的弧度数，以水平线起始时，值为0；圆弧控件没有表示粗细的参数，只能多画几个同心圆弧来加粗。Polygon(*coordinates,color=(255,255,255,255),batch=None,group=None)coordinates是多边形的各个端点的坐标列表，也可以写成元组方式；多边形控件是填充形状，没有粗细参数也不能只画边线。代码如下：importpygletwindow=pyglet.window.Window(800,500)batch=pyglet.graphics.Batch()color=(255,255,255)pi=3.141592653589793arc=[]x,y=380,250foriin[*range(6),*range(18,24),*range(36,42)]:arc.append(pyglet.shapes.Arc(x=x,y=y,radius=50-i/2,angle=pi/2,start_angle=-pi/4,color=color,batch=batch))coordinates=[x+10,y+8],[x,y+8],[x,y-8],[x+10,y-8],[x+16,y-14],[x+16,y+14]polygon=pyglet.shapes.Polygon(*coordinates,color=color,batch=batch)@window.eventdefon_draw():window.clear()batch.draw()pyglet.app.run()2.扬声器类改写为一个类便于调用，可以画在任意坐标处：classSpeaker:  def__init__(self,x,y,color=(255,255,255)):    self.arc=[]    pi=3.141592653589793    foriin[*range(6),*range(18,24),*range(36,42)]:                self.arc.append(pyglet.shapes.Arc(x=x,y=y,radius=50-i/2,angle=pi/2,start_angle=-pi/4,color=color,batch=batch))        coordinates=[x+10,y+8],[x,y+8],[x,y-8],[x+10,y-8],[x+16,y-14],[x+16,y+14]        self.polygon=pyglet.shapes.Polygon(*coordinates,color=color,batch=batch)调用代码：importpygletwindow=pyglet.window.Window(800,500)batch=pyglet.graphics.Batch()classSpeaker:def__init__(self,x,y,color=(255,255,255)):self.arc=[]pi=3.141592653589793foriin[*range(6),*range(18,24),*range(36,42)]:self.arc.append(pyglet.shapes.Arc(x=x,y=y,radius=50-i/2,angle=pi/2,start_angle=-pi/4,color=color,batch=batch))coordinates=[x+10,y+8],[x,y+8],[x,y-8],[x+10,y-8],[x+16,y-14],[x+16,y+14]self.polygon=pyglet.shapes.Polygon(*coordinates,color=color,batch=batch)@window.eventdefon_draw():window.clear()batch.draw()speaker1=Speaker(380,250)speaker2=Speaker(600,360)pyglet.app.run()运行效果：3.禁音状态 再加两条红色直线表示禁音状态，shapes.Line用法：Line(x,y,x2,y2,width=1,color=(255,255,255,255),batch=None,group=None)x,y,x2,y2为直线两端点的坐标；width为直线粗细，缺省默认值为1，直线控件有粗细的。代码如下：importpygletwindow=pyglet.window.Window(800,500)batch=pyglet.graphics.Batch()classSpeaker:def__init__(self,x,y,color=(255,255,255)):self.arc=[]pi=3.141592653589793foriin[*range(6),*range(18,24),*range(36,42)]:self.arc.append(pyglet.shapes.Arc(x=x,y=y,radius=50-i/2,angle=pi/2,start_angle=-pi/4,color=color,batch=batch))coordinates=[x+10,y+8],[x,y+8],[x,y-8],[x+10,y-8],[x+16,y-14],[x+16,y+14]self.polygon=pyglet.shapes.Polygon(*coordinates,color=color,batch=batch)self.line1=pyglet.shapes.Line(x,y-24,x+48,y+24,width=3,color=(255,0,0),batch=batch)self.line2=pyglet.shapes.Line(x,y+24,x+48,y-24,width=3,color=(255,0,0),batch=batch)@window.eventdefon_draw():window.clear()batch.draw()speaker1=Speaker(380,250)speaker2=Speaker(600,360)pyglet.app.run()运行效果：4.设置状态再为Speaker类增加两个属性和一个方法，用于设置状态：    self.line1.visible= Flase        self.line2.visible=Flase  defenabled(self,enabled=True):    self.line1.visible=self.line2.visible=notenabled调用代码：importpygletwindow=pyglet.window.Window(800,500)batch=pyglet.graphics.Batch()classSpeaker:def__init__(self,x,y,color=(255,255,255)):self.arc=[]pi=3.141592653589793foriin[*range(6),*range(18,24),*range(36,42)]:self.arc.append(pyglet.shapes.Arc(x=x,y=y,radius=50-i/2,angle=pi/2,start_angle=-pi/4,color=color,batch=batch))coordinates=[x+10,y+8],[x,y+8],[x,y-8],[x+10,y-8],[x+16,y-14],[x+16,y+14]self.polygon=pyglet.shapes.Polygon(*coordinates,color=color,batch=batch)self.line1=pyglet.shapes.Line(x,y-24,x+48,y+24,width=3,color=(255,0,0),batch=batch)self.line2=pyglet.shapes.Line(x,y+24,x+48,y-24,width=3,color=(255,0,0),batch=batch)self.line1.visible=self.line2.visible=Falsedefset_enabled(self,enabled=True):self.line1.visible=self.line2.visible=notenabled@window.eventdefon_draw():window.clear()batch.draw()speaker1=Speaker(380,250)speaker2=Speaker(600,360)speaker2.set_enabled(False)pyglet.app.run()运行效果：5.切换状态继续增加鼠标点击切换状态的功能，增加属性和方法：属性：    self.x=x    self.y=y    self.enabled=True方法：  defset_enabled(self,enabled=True):    self.enabled=enabled    self.line1.visible=self.line2.visible=notenabled  defon_mouse_over(self,x,y):    returnself.x