#!/usr/bin/env python3
# -*- coding: utf-8 -*-

import bpy
import os
import sys
from math import *

# ************************************************************
# LECTURA DE DATOS
ruta = sys.argv[5]
imagenNum = sys.argv[6]
w = int(sys.argv[7])
h = int(sys.argv[8])
celdas_propuestas = int(sys.argv[9])
render = sys.argv[10]
# ************************************************************



if (render == 'True'):
    renderizar = True
elif (render == 'False'):
    renderizar = False

print(renderizar)



# ************************************************************
# Cálculo de las posiciones de xMin, xMax, yMin, yMax como arrays.
X = sqrt(w * h)
nx = sqrt(celdas_propuestas)
x = X / nx
xw = x / w
xh = x / h

xMin = []
xMax = []
suma = 0.0
while (suma < 1.0):
    xMin.append(suma)
    suma += xw
    if (suma > 1.0):
        suma = 1.0
    xMax.append(suma)

yMin = []
yMax = []
suma = 0.0
while (suma < 1.0):
    yMin.append(suma)
    suma += xh
    if (suma > 1.0):
        suma = 1.0
    yMax.append(suma)

print('Tamaño del render: {0} px de ancho por {1} px de alto'.format(w, h))
print('Ancho de celda cuadrada: {0:.0f} px'.format(x))
print('Celdas a lo ancho: {0:.2f}  ({1})'.format(w / x, ceil(w / x)))
print('Celdas a lo alto: {0:.2f}  ({1})'.format(h / x, ceil(h / x)))
print('Total de celdas (completas o incompletas): {0}\n'.format(len(xMin) * len(yMin)))

# ************************************************************




# ************************************************************
# PROCESO DE RENDERIZADO
if (renderizar == True):
    print('Renderizando . . .')
    #
    bpy.context.scene.render.use_border = True
    bpy.context.scene.render.use_crop_to_border = True
    tile = 0
    for i in range(len(xMin)):
        bpy.data.scenes['Scene'].render.border_min_x = xMin[i]
        bpy.data.scenes['Scene'].render.border_max_x = xMax[i]
        for j in range(len(yMin)):
            bpy.context.scene.render.filepath = os.path.join(ruta, (imagenNum % (tile+1)))
            bpy.data.scenes['Scene'].render.border_min_y = yMin[j]
            bpy.data.scenes['Scene'].render.border_max_y = yMax[j]
            print('\n\nRenderizando celda {0} de {1}: columna {2} de {3}, fila {4} de {5}'.format(
                tile+1, len(xMin) * len(yMin), i+1, len(xMin), j+1, len(yMin)))
            bpy.ops.render.render(write_still = True)
            tile += 1
# ************************************************************