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import sys
import pygame
from pygame.locals import *
from math import *
from Numeric import *
from pyglew import *
pygame.display.init()
surface = pygame.display.set_mode((512,512), OPENGL|DOUBLEBUF)
glewInit()
print "Vendor =", glGetString(GL_VENDOR)
print "Renderer =", glGetString(GL_RENDERER)
print "Version =", glGetString(GL_VERSION)
def polar(n):
theta = n*2*pi/100
return cos(theta), sin(theta), 0.0
data = ravel(array(map(polar, range(100)), Float32))
while 1:
event = pygame.event.poll()
if event.type == QUIT or (event.type == KEYDOWN and event.key == K_ESCAPE):
sys.exit(0)
glDrawPixels(100, 1, GL_RGB, GL_FLOAT, data.tostring())
str = glReadPixels(0, 0, 100, 1, GL_RGB, GL_FLOAT);
arr = fromstring(str, Float32)
glMatrixMode(GL_PROJECTION)
glLoadIdentity()
glOrtho(-1, 1, -1, 1, 0.1, 10.0)
glMatrixMode(GL_MODELVIEW)
glLoadIdentity()
glTranslatef(0,0,-1)
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, list(ravel(arr)));
glDrawArrays(GL_POINTS, 0, 100);
pygame.display.flip()
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