Create a texture map using an image grabbed from the web

webtex.py

import sys, time, math, os, random
import Image
import urllib2, StringIO
from pyglet.gl import *

window = pyglet.window.Window()
keyboard = pyglet.window.key.KeyStateHandler()
window.push_handlers(keyboard)

def getImageFromURL(url):
    str = urllib2.urlopen(url).read()
    img = Image.open(StringIO.StringIO(str)).convert('RGB').transpose(Image.FLIP_TOP_BOTTOM)
    print "Loaded", url
    width = 2
    while width < img.size[0]:
        width *= 2
    height = 2
    while height < img.size[1]:
        height *= 2
    print "Resizing to", (width,height)
    img = img.resize((width,height))
    return img


def loadTexture(url):
    img = getImageFromURL(url)
    textureIDs = (pyglet.gl.GLuint * 1) ()
    glGenTextures(1,textureIDs)
    textureID = textureIDs[0]
    print 'generating texture', textureID, 'from', url
    glBindTexture(GL_TEXTURE_2D, textureID)
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img.size[0], img.size[1],
                 0, GL_RGB, GL_UNSIGNED_BYTE, img.tostring())
    glBindTexture(GL_TEXTURE_2D, 0)
    return textureID


class TexturedSquare:
    def __init__(self, width, height, xpos, ypos, texturefile):
        self.xpos = xpos
        self.ypos = ypos
        self.angle = 0
        self.size = 1
        self.texture = loadTexture(texturefile)
        x = width/2.0
        y = height/2.0
        self.vlist = pyglet.graphics.vertex_list(4, ('v2f', [-x,-y, x,-y, -x,y, x,y]), ('t2f', [0,0, 1,0, 0,1, 1,1]))
    def draw(self):
        glPushMatrix()
        glTranslatef(self.xpos, self.ypos, 0)
        glRotatef(self.angle, 0, 0, 1)
        glScalef(self.size, self.size, self.size)
        glColor3f(1,1,1)
        glEnable(GL_TEXTURE_2D)
        glBindTexture(GL_TEXTURE_2D, self.texture)
        self.vlist.draw(GL_TRIANGLE_STRIP)
        glDisable(GL_TEXTURE_2D)
        glPopMatrix()


@window.event
def on_draw():
    glClearColor(0, 0.3, 0.5, 0)
    glClear(GL_COLOR_BUFFER_BIT)
    square1.draw()
    

def update(dummy):
    global square1
    if keyboard[pyglet.window.key.A]:
        square1.xpos -= 5
    if keyboard[pyglet.window.key.D]:
        square1.xpos += 5
    if keyboard[pyglet.window.key.W]:
        square1.ypos += 5
    if keyboard[pyglet.window.key.S]:
        square1.ypos -= 5
    if keyboard[pyglet.window.key.UP]:
        square1.size *= 1.1
    if keyboard[pyglet.window.key.DOWN]:
        square1.size /= 1.1
    if keyboard[pyglet.window.key.LEFT]:
        square1.angle += 5
    if keyboard[pyglet.window.key.RIGHT]:
        square1.angle -= 5


square1 = TexturedSquare(120, 120, 300, 200, "http://davepape.org/snakskin.png")

pyglet.clock.schedule_interval(update,1/60.0)
pyglet.app.run()