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#!
# This is statement is required by the build system to query build info
if __name__ == '__build__':
raise Exception
import sys
from OpenGL.GL import *
from OpenGL.GLE import *
from OpenGL.GLUT import *
class GLE_demo:
def __init__(self):
# initial mouse position
self.lastx = 121
self.lasty = 121
# set the display mode and create the window
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH)
glutCreateWindow("GLE demo")
# setup the callbacks
glutDisplayFunc(self.on_display)
glutMotionFunc(self.on_motion)
glutReshapeFunc(self.on_reshape)
#
glClearDepth(1.0)
glEnable(GL_DEPTH_TEST)
glClearColor(0.0, 0.0, 0.0, 0.0)
glShadeModel(GL_SMOOTH)
glMatrixMode(GL_MODELVIEW)
# initialize lighting */
glLightfv(GL_LIGHT0, GL_POSITION, (40.0, 40, 100.0, 0.0))
glLightfv(GL_LIGHT0, GL_DIFFUSE, (0.99, 0.99, 0.99, 1.0))
glEnable(GL_LIGHT0)
glLightfv(GL_LIGHT1, GL_POSITION, (-40.0, 40, 100.0, 0.0))
glLightfv(GL_LIGHT1, GL_DIFFUSE, (0.99, 0.99, 0.99, 1.0))
glEnable(GL_LIGHT1)
glEnable(GL_LIGHTING)
glColorMaterial(GL_FRONT_AND_BACK, GL_DIFFUSE)
glEnable(GL_COLOR_MATERIAL)
def on_motion(self, x, y):
# store the mouse coordinate
self.lastx = x
self.lasty = y
# redisplay
glutPostRedisplay()
def on_reshape(self, width, height):
# setup the viewport
glViewport(0, 0, width, height)
# setup the projection matrix
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
# calculate left/right and top/bottom clipping planes based the smallest square viewport
a = 9.0/min(width, height)
clipping_planes = (a*width, a*height)
# setup the projection
glFrustum(-clipping_planes[0], clipping_planes[0], -clipping_planes[1], clipping_planes[1], 50.0, 150.0)
def on_display(self):
# clear the buffer
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
# Set up the model view matrix
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
glTranslatef(0.0, 0.0, -80.0)
glRotatef(self.lastx, 0.0, 1.0, 0.0)
glRotatef(self.lasty, 1.0, 0.0, 0.0)
# a nice pale lime green
glColor3f(0.6, 0.8, 0.3)
# set the join styles for GLE
gleSetJoinStyle(TUBE_NORM_EDGE | TUBE_JN_ANGLE | TUBE_JN_CAP)
gleHelicoid(1.0, 6.0, 2.0, -3.0, 4.0, None, None, 0.0, 1080.0)
# swap the buffer
glutSwapBuffers()
if __name__ == '__main__':
# initialize GLUT
glutInit(sys.argv)
# create the demo window
GLE_demo()
# enter the event loop
glutMainLoop ()
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