gl_fallback.py 文件源码

def draw_photon(self,qp,start_x,start_y,up):
        wx=np.arange(0, 100.0 , 0.1)
        wy=np.sin(wx*3.14159*0.1)*15

        pen=QPen()
        pen.setWidth(2)

        if up==True:
            pen.setColor(QColor(0,0,255))
        else:
            pen.setColor(QColor(0,255,0))

        qp.setPen(pen)

        for i in range(1,len(wx)):
            qp.drawLine((int)(start_x-wy[i-1]),(int)(start_y+wx[i-1]),(int)(start_x-wy[i]),(int)(start_y+wx[i]))

        if up==True:
            path=QPainterPath()

            path.moveTo (start_x-10, start_y);
            path.lineTo (start_x-10, start_y);

            path.lineTo (start_x+10,   start_y);

            path.lineTo (start_x, start_y-20);

            qp.fillPath (path, QBrush (QColor (0,0,255)))
        else:
            path=QPainterPath()

            path.moveTo (start_x-10, start_y+100.0);
            path.lineTo (start_x-10, start_y+100.0);

            path.lineTo (start_x+10,   start_y+100.0);

            path.lineTo (start_x, start_y+100.0+20);

            qp.setPen (Qt.NoPen);
            qp.fillPath (path, QBrush (QColor (0,255,0)))