#!/usr/bin/env python
import subprocess
import os
import glob
import sys

root = os.path.dirname(sys.argv[0])
platform = sys.platform

SHADERS = 'shaders'
TEXTURES = 'textures'
RES = 2048

# /// ENV SETUP

os.environ['DL_SHADERS_PATH'] = os.path.join(root, SHADERS)
os.environ['DL_TEXTURES_PATH'] = os.path.join(root, TEXTURES)

if platform == 'linux2':
    print 'running linux'
    DELIGHT = '/usr/local/3delight-12.0.19/Linux-x86_64'
    #os.environ['DELIGHT'] = DELIGHT
    #sys.path.append(os.path.join(DELIGHT, 'bin'))
elif platform == 'darwin':
    DELIGHT = '/Applications/3Delight'

os.environ['DELIGHT'] = DELIGHT
sys.path.append(os.path.join(DELIGHT, 'bin'))
DELIGHT_BIN_FOLDER = os.path.join(DELIGHT, 'bin')
DELIGHT_BIN = os.path.join(DELIGHT_BIN_FOLDER, 'renderdl')
TDLMAKE_BIN = os.path.join(DELIGHT_BIN_FOLDER, 'tdlmake')


def cleanup():
    for bakefile in glob.glob(os.path.join(root,'*.bake')):
        os.remove(bakefile)
    for tdl in glob.glob(os.path.join(root,'*.tdl')):
        os.remove(tdl)


def gen_includes(heightmap, disp_factor=1):
    includes = []
    disp_bound = disp_factor * 1.05
    for file in glob.glob('caster/*'):
        includes.append(file)
    
    for file in glob.glob('receiver/*'):
        basename = os.path.splitext(os.path.basename(file))[0]
        dispsettings  = '\n\tDisplacement "lm_disp" "float offset" [.01] \n\t"float Km" [{2}] "string texname" ["textures/tweaked_heightmap.tdl"]'

        include = 'AttributeBegin\
        \n\tSurface "lm_bake" "string bakefile" ["{0}"] "string texColName" [""] "string texSpecName" [""] "float Ka" [0.5] "float Kd" [0.4] "float Ks" [0.5] "float roughness" [0.1]\
        \n\tAttribute "displacementbound" "sphere" [{3}]\
        \n\tReadArchive "{1}"]\
        \nAttributeEnd'.format(basename, file, disp_factor, disp_bound)
        includes.append(include)
    return includes

def bake_post_render(root, res=RES):
    for bakefile in glob.glob(os.path.join(root, '*.bake')):
        bake_target = os.path.splitext(bakefile)[0]
        # tdlmake converts bake files to tdl only
        cmd = [TDLMAKE_BIN, '-nomipmap', '-progress', '-bakeres', str(res) + 'x' + str(res), bakefile, bake_target + '.tdl']
        subprocess.call(cmd)
        cmd = [TDLMAKE_BIN, '-nomipmap', '-progress', bake_target + '.tdl', bake_target + '.tif']
        subprocess.call(cmd)

for include in  gen_includes('textures/tweaked_heightmap.tdl', 200):
    print include

cleanup()



subprocess.call([DELIGHT_BIN, '-res', str(RES), str(RES), '-id', '-progress', 'options.rib'])
bake_post_render(root)