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#!
# This is statement is required by the build system to query build info
if __name__ == '__build__':
raise Exception
import string
__version__ = string.split('$Revision: 1.5 $')[1]
__date__ = string.join(string.split('$Date: 2001/08/30 19:17:17 $')[1:3], ' ')
__author__ = 'Tarn Weisner Burton <twburton@users.sourceforge.net>'
from OpenGL.GL import *
from OpenGL.Tk import *
try:
from Numeric import *
except:
import sys
print "This demo requires the Numeric extension, sorry."
sys.exit()
n=50
a=arange(0,n)
vertices = transpose(reshape(array((cos(2*pi*a/n), sin(3*2*pi*a/n))), (2, n)))
colors=ones((n, 3))
colors[0]=[1,0,0]
colors[25]=[1,1,0]
colors.shape = (n, 3)
def redraw(o):
global n
glClearColor(0.5, 0.5, 0.5, 0)
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
glOrtho(-1,1,-1,1,-1,1)
glDisable(GL_LIGHTING)
glDrawArrays(GL_LINE_LOOP, 0, n)
glEnable(GL_LIGHTING)
def main():
global n, colors, vertices
o = Opengl(width = 400, height = 400, double = 1)
o.redraw = redraw
o.autospin_allowed = 1
glVertexPointerd(vertices)
glColorPointerd(colors)
glEnableClientState(GL_VERTEX_ARRAY)
glEnableClientState(GL_COLOR_ARRAY)
o.pack(side = 'top', expand = 1, fill = 'both')
o.mainloop()
main()
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