Ubuntu下利用Python开发Opengl程序

来源：http://www.linuxidc.com/Linux/2013-02/78960.htm

from OpenGL.GL import *from OpenGL.GLU import *from OpenGL.GLUT import *import mathimport  timeh=0m=0s=0def Draw():    PI=3.1415926     R=0.5    TR=R-0.05    glClear(GL_COLOR_BUFFER_BIT)    glLineWidth(5)    glBegin(GL_LINE_LOOP)    for i in range(100):        glVertex2f(R*math.cos(2*PI/100*i),R*math.sin(2*PI/100*i))    glEnd()        glLineWidth(2)    for i in range(100):        glBegin(GL_LINES)          glVertex2f(TR*math.sin(2*PI/12*i),TR*math.cos(2*PI/12*i))          glVertex2f(R*math.sin(2*PI/12*i),R*math.cos(2*PI/12*i))          glEnd()            glLineWidth(1)     h_Length=0.2    m_Length=0.3    s_Length=0.4    count=60.0    s_Angle=s/count    count*=60    m_Angle=(m*60+s)/count    count*=12    h_Angle=(h*60*60+m*60+s)/count    glLineWidth(1)     glBegin(GL_LINES)    glVertex2f(0.0,0.0)     glVertex2f(s_Length*math.sin(2*PI*s_Angle),s_Length*math.cos(2*PI*s_Angle))    glEnd()    glLineWidth(5)    glBegin(GL_LINES)    glVertex2f(0.0,0.0)    glVertex2f(h_Length*math.sin(2*PI*h_Angle),h_Length*math.cos(2*PI*h_Angle))    glEnd()    glLineWidth(3)    glBegin(GL_LINES)    glVertex2f(0.0,0.0)    glVertex2f(m_Length*math.sin(2*PI*m_Angle),m_Length*math.cos(2*PI*m_Angle))     glEnd()    glLineWidth(1)    glBegin(GL_POLYGON)     for i in range(100):        glVertex2f(0.03*math.cos(2*PI/100*i),0.03*math.sin(2*PI/100*i));      glEnd()        glFlush()    def Update():    global h,m,s    t=time.localtime(time.time())    h=int(time.strftime('%H',t))    m=int(time.strftime('%M',t))    s=int(time.strftime('%S',t))    glutPostRedisplay()    glutInit()glutInitDisplayMode(GLUT_SINGLE | GLUT_RGBA)glutInitWindowSize(400, 400)glutCreateWindow("My clock")glutDisplayFunc(Draw)glutIdleFunc(Update)glutMainLoop()