import sys, math, random
from pyglet.gl import *

window = pyglet.window.Window()

points = []
for i in range(0,41):
  angle = (i/40.0) * math.pi * 2
  x,y = math.sin(angle), math.cos(angle)
  r,g,b = random.uniform(0,1), random.uniform(0,1), random.uniform(0,1)
  points.append([x,y,r,g,b])
wheelScale = 10.0
wheelRot = 0
wheelTrans = [50,50]

def drawWheel():
    glBegin(GL_TRIANGLE_FAN)
    glColor3f(1,1,1)
    glVertex2f(0,0)
    for p in points:
        glColor3f(p[2],p[3],p[4])
        glVertex2f(p[0],p[1])
    glEnd()

@window.event
def on_draw():
    glClear(GL_COLOR_BUFFER_BIT)

    glViewport(0,0,window.width,window.height)
    glMatrixMode(GL_PROJECTION)
    glLoadIdentity()
    gluOrtho2D(0,window.width,0,window.height)
    glMatrixMode(GL_MODELVIEW)

    glLoadIdentity()
    glTranslatef(wheelTrans[0], wheelTrans[1], 0)
    glRotatef(wheelRot, 0, 0, 1)
    glScalef(wheelScale, wheelScale, wheelScale)
    drawWheel()
    glFlush()


@window.event
def on_key_press(key,modifiers):
    global wheelScale, wheelRot, wheelTrans
    print key
    if key == pyglet.window.key.ESCAPE:
        sys.exit(0)
    elif key == pyglet.window.key.W:
        wheelTrans[1] += 5
    elif key == pyglet.window.key.A:
        wheelTrans[1] -= 5
    elif key == pyglet.window.key.S:
        wheelTrans[0] -= 5
    elif key == pyglet.window.key.D:
        wheelTrans[0] += 5
    elif key == pyglet.window.key.UP:
        wheelScale += 2
    elif key == pyglet.window.key.DOWN:
        wheelScale -= 2
    elif key == pyglet.window.key.LEFT:
        wheelRot += 10
    elif key == pyglet.window.key.RIGHT:
        wheelRot -= 10


pyglet.app.run()