sphere_list = []

#try to open file or throw error

try:

input_file = open(argv[1], "r")

except:

print "Error: Filename not correctly specified"

print "Usage: python ray_caster.py <filename> [-eye x y z] [-view min_x max_x min_y max_y width height"

exit()

#try to instantiate spheres from argv inputs or throw error

line_count = 0

for line in input_file:

line_count += 1

try:

params = line.split()

x = float(params[0])

y = float(params[1])

z = float(params[2])

rad = float(params[3])

r = float(params[4])

g = float(params[5])

b = float(params[6])

amb = float(params[7])

diff = float(params[8])

spec = float(params[9])

rough = float(params[10])

sphere = Sphere(Point(x, y, z), rad, Color(r, g, b), Finish(amb, diff, spec, rough))

sphere_list.append(sphere)

except:

print "malformed sphere on line {0} ... skipping".format(str(line_count))

#initialize casting variables relative to argv inputs

eye_point = get_eye_point(argv)

view = get_view(argv)

light = get_light(argv)

ambient = get_ambient(argv)

#write to image.ppm output image

file = open("image.ppm", "w")

file.write("P3\n")

file.write("{0} {1}\n".format(str(view.width), str(view.height)))

file.write("{0}\n".format(str(255)))

cast_all_rays(view, eye_point, sphere_list, ambient, light, file)