#!/usr/bin/python2.4
from __future__ import division
import sys, time, math
import Image, ImageFilter
import Numeric as num
from OpenGL import GL, GLUT, GLU
from OpenGL.GL import *

def openglSetup(width=512, height=256):
    global cardList

    glClearColor (0.0, 0.0, 0.0, 0.0)
    glShadeModel (GL_SMOOTH)
    glEnable(GL_COLOR_MATERIAL)

    glLightfv(GL_LIGHT0, GL_AMBIENT, [0.0, 0.0, 0.0, 1.0])
    glLightfv(GL_LIGHT0, GL_DIFFUSE, [1.0, 1.0, 1.0, 1.0])
    glLightfv(GL_LIGHT0, GL_POSITION, [0.0, 3.0, 3.0, 0.0])
    glLightModelfv(GL_LIGHT_MODEL_AMBIENT, [0.2, 0.2, 0.2, 1.0])
    glLightModelfv(GL_LIGHT_MODEL_LOCAL_VIEWER, [0])

    #glFrontFace(GL_CW)
    glEnable(GL_LIGHTING)
    glEnable(GL_LIGHT0)
    #glEnable(GL_AUTO_NORMAL)
    #glEnable(GL_NORMALIZE)
    glEnable(GL_DEPTH_TEST) 


    glViewport (0, 0, width, height)
    glMatrixMode (GL_PROJECTION)
    glLoadIdentity ()
    glFrustum (-1.0, 1.0, -1.0, 1.0, 1.5, 20.0)
    glMatrixMode (GL_MODELVIEW)

    cardList = glGenLists(1)
    glNewList(cardList, GL_COMPILE)
    glColor3f(1,1,1)
    glBegin(GL_QUADS)
    glTexCoord2f(0.0, 1.0); glVertex3f(-1.0, 0.0,  1.0)
    glTexCoord2f(1.0, 1.0); glVertex3f( 1.0, 0.0,  1.0)
    glTexCoord2f(1.0, 0.0); glVertex3f( 1.0, 1.0,  1.0)
    glTexCoord2f(0.0, 0.0); glVertex3f(-1.0, 1.0,  1.0)
    glEnd()
    glEndList()



def imageCard(img):
    """card facing +Z from -1<x<1 -1<y<1"""
    textureData = img.convert(mode="RGBA").tostring()

    glBindTexture(GL_TEXTURE_2D, 0)
    glTexImage2D( GL_TEXTURE_2D, 0, GL_RGBA,
                  512, #multiImage.size()[0],
                  256, #multiImage.size()[1],
                  0,
                  GL_RGBA, GL_UNSIGNED_BYTE, textureData)
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST)
    glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST)

    glCallList(cardList)

def setupDraw():
    """per-frame setup"""
    glClearColor(0.0, 0.0, 0.0, 0.0)
    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT)
    glLoadIdentity ()
    GLU.gluLookAt (0.5, 0.5, 8.0,
                   0.5, 0.5, 0.0,
                   0.0, 1.0, 0.0)

    glDisable(GL_TEXTURE_2D)

correctFrameStart = None
def drawFrame():
    global correctFrameStart
    t1 = time.time()
    setupDraw()
    
    matching = False
    glPushMatrix()
    try:
        glTranslatef(1, -.9, 3.2)
        # flip to compensate for the camera facing the user
        glScalef(-1, 1, 1)
        
        glDisable(GL_LIGHTING)
        glEnable(GL_TEXTURE_2D)

#        imageCard(Image.open("skyline/bg.png"))
        imageCard(Image.open("skyline/cyc-lo-red.png"))

##         if grab.lastFrame:
##             imageCard(grab.lastFrame)
##             glEnable(GL_LIGHTING)
##             glDisable(GL_TEXTURE_2D)
##             if grab.seenPose:
##                 for colorName, pos in grab.seenPose.pos.items():
##                     cube(color=(x / 255 for x in vision.colors[colorName]),
##                          center=((1-pos[0]) * 2 - 1, pos[1] * 2 - 1, 1),
##                          side=.1, wire=False)
##                 matching = game.pose.compare(grab.seenPose)
        glEnable(GL_LIGHTING)
        glDisable(GL_TEXTURE_2D)
    finally:
        glPopMatrix()

    
    glFlush()
    #print "draw", time.time() - t1

GLUT.glutInit(sys.argv)
window = GLUT.glutCreateWindow("sim2")
openglSetup()
GLUT.glutDisplayFunc(drawFrame)
def menu(arg):
    print "hi", arg
GLUT.glutCreateMenu(menu)
GLUT.glutAddMenuEntry("hi", 1)
GLUT.glutAttachMenu(GLUT.GLUT_RIGHT_BUTTON)

GLUT.glutMainLoop()