import numpy as np
from PIL import Image
from OpenGL.GL import *

class BSImage:
    tex_id = 0
    width = 0
    height = 0

def load_image(path):
    image = Image.open(path)
    data = np.array(list(image.getdata()), np.uint8)
    tex_id = glGenTextures(1)
    glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
    glBindTexture(GL_TEXTURE_2D, tex_id)
    glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
    glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
    glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_CLAMP_TO_EDGE);
    glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_CLAMP_TO_EDGE);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0)
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0)
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, image.size[0], image.size[1],
                 0, GL_RGB, GL_UNSIGNED_BYTE, data)
    image.close()
    i = BSImage()
    i.tex_id = tex_id
    i.width = image.size[0]
    i.height = image.size[1]
    return i

def load_image_rgba(path):
    image = Image.open(path)
    data = np.array(list(image.getdata()), np.uint8)
    tex_id = glGenTextures(1)
    glPixelStorei(GL_UNPACK_ALIGNMENT, 1)
    glBindTexture(GL_TEXTURE_2D, tex_id)
    glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_NEAREST);
    glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_NEAREST);
    glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_CLAMP_TO_EDGE);
    glTexParameterf(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_CLAMP_TO_EDGE);
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_BASE_LEVEL, 0)
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAX_LEVEL, 0)
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, image.size[0], image.size[1],
                 0, GL_RGBA, GL_UNSIGNED_BYTE, data)
    image.close()
    i = BSImage()
    i.tex_id = tex_id
    i.width = image.size[0]
    i.height = image.size[1]
    return i

def render_image(tex_id, x, y, width, height):
    glEnable(GL_TEXTURE_2D)
    glBindTexture(GL_TEXTURE_2D, tex_id)
    glBegin(GL_QUADS)
    glTexCoord2f(0, 0)
    glVertex2f(x, y)
    glTexCoord2f(0, 1)
    glVertex2f(x, y + height)
    glTexCoord2f(1, 1)
    glVertex2f(x + width, y + height)
    glTexCoord2f(1, 0)
    glVertex2f(x + width, y)
    glEnd()
    glDisable(GL_TEXTURE_2D)