# This program receives data from the 'netserve' XMMS plugin, and draws it
# as a simple line plot
import sys, time, math, os, socket, string, struct
from OpenGL.GL import *
from OpenGL.GLU import *
from OpenGL.GLUT import *
from dmsgl import *
startdir = os.getcwd()

sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
sock.bind(('', 10000))


windowWidth, windowHeight = 400, 400
camera = OrthoCamera(left=0, right=0.3, bottom=0, top=1)

heights = []

def draw():
    glClear(GL_COLOR_BUFFER_BIT)
    Color.Red.apply()
    camera.apply()
    glBegin(GL_LINE_STRIP)
    index = 0
    for v in heights:
        glVertex2f(float(index)/len(heights), (v+16000)/32000.0)
        index += 1
    glEnd()
    glutSwapBuffers()

def keyboard(key, x, y):
    if key == chr(27):
        sys.exit(0)


def update():
    global heights
    buf = sock.recv(2048)
    heights = struct.unpack('h'*256, buf[0:512])
    glutPostRedisplay()

glutInit([])
glutInitDisplayMode(GLUT_RGB | GLUT_DOUBLE)
glutInitWindowSize(windowWidth, windowHeight)
glutCreateWindow(sys.argv[0])
glutDisplayFunc(draw)
glutKeyboardFunc(keyboard)
glutIdleFunc(update)
os.chdir(startdir)
glutMainLoop()