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 math
import time

h=0
m=0
s=0
def 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()