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#!/usr/bin/env python3
#########################################################################
# Copyright (C) 2011 Tavian Barnes <tavianator@tavianator.com> #
# #
# This file is part of Dimension. #
# #
# Dimension is free software; you can redistribute it and/or modify it #
# under the terms of the GNU General Public License as published by the #
# Free Software Foundation; either version 3 of the License, or (at #
# your option) any later version. #
# #
# Dimension is distributed in the hope that it will be useful, but #
# WITHOUT ANY WARRANTY; without even the implied warranty of #
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU #
# General Public License for more details. #
# #
# You should have received a copy of the GNU General Public License #
# along with this program. If not, see <http://www.gnu.org/licenses/>. #
#########################################################################
import argparse as _argparse
import re as _re
import os.path as _path
import sys as _sys
# Specialized parser to print --version output to stdout rather than stderr,
# to pass distcheck
class _DimensionArgumentParser(_argparse.ArgumentParser):
def exit(self, status = 0, message = None):
if message:
file = _sys.stdout if status == 0 else _sys.stderr
file.write(message)
_sys.exit(status)
# Parse the command line
_parser = _DimensionArgumentParser(
epilog = "@PACKAGE_STRING@\n"
"@PACKAGE_URL@\n"
"Copyright (C) 2009-2011 Tavian Barnes <@PACKAGE_BUGREPORT@>\n"
"Licensed under the GNU General Public License",
formatter_class = _argparse.RawDescriptionHelpFormatter,
conflict_handler = "resolve", # For -h as height instead of help
)
_parser.add_argument("-V", "--version", action = "version",
version = "@PACKAGE_STRING@")
_parser.add_argument("-w", "--width", action = "store", type = int,
default = 768,
help = "image width (default: %(default)s)")
_parser.add_argument("-h", "--height", action = "store", type = int,
default = 480,
help = "image height (default: %(default)s)")
_parser.add_argument("--region", action = "store", type = str,
help = "subregion to render, as \"(x1, y1)->(x2, y2)\"")
_parser.add_argument("-v", "--verbose", action = "store_true",
help = "print more information")
_parser.add_argument("-q", "--quiet", action = "store_true",
help = "print less information")
_parser.add_argument("--threads", action = "store", type = int,
help = "the number of threads to render with")
_parser.add_argument("--quality", action = "store", type = str,
help = "the scene quality")
_parser.add_argument("--adc-bailout", action = "store", type = str,
help = "the ADC bailout (default: 1/255)")
_parser.add_argument("-o", "--output", action = "store", type = str,
help = "the output image file")
_parser.add_argument("input", action = "store", type = str,
help = "the input scene description file")
# Debugging/testing options
_parser.add_argument("--strict", action = "store_true",
help = _argparse.SUPPRESS)
_args = _parser.parse_args()
# Calculate subregion
if _args.region is None:
_args.region_x = 0
_args.region_y = 0
_args.region_width = _args.width
_args.region_height = _args.height
else:
_pattern = r"^\s*\(\s*(\d*)\s*,\s*(\d*)\s*\)\s*->\s*\(\s*(\d*)\s*,\s*(\d*)\s*\)\s*$"
_match = _re.match(_pattern, _args.region)
if _match is None:
raise RuntimeError("range specified in invalid format.")
_args.region_x = int(_match.group(1))
_args.region_y = int(_match.group(2))
_region_xmax = int(_match.group(3))
_region_ymax = int(_match.group(4))
_args.region_width = _region_xmax - _args.region_x
_args.region_height = _region_ymax - _args.region_y
if _args.region_width <= 0 or _args.region_height <= 0:
raise RuntimeError("region is degenerate.")
if _region_xmax >= _args.width or _region_ymax > _args.height:
raise RuntimeError("region exceeds bounds of image.")
# Default output is basename(input).png
if _args.output is None:
_noext = _path.splitext(_path.basename(_args.input))[0]
_args.output = _noext + ".png"
# Imports available to scripts
from math import *
from dimension import *
# Display a progress bar
def _progress_bar(str, progress):
try:
if not _args.quiet:
print(str, end = ' ')
_sys.stdout.flush()
term_width = terminal_width()
width = term_width - (len(str) + 1)%term_width
for i in range(width):
progress.wait((i + 1)/width)
print('.', end = '')
_sys.stdout.flush()
print()
_sys.stdout.flush()
progress.finish()
except KeyboardInterrupt:
print()
_sys.stdout.flush()
progress.cancel()
try:
progress.finish()
except:
# Swallow the failure exception
pass
raise
# --strict option
die_on_warnings(_args.strict)
# Defaults/available variables
image_width = _args.width
image_height = _args.height
objects = []
lights = []
camera = PerspectiveCamera()
default_texture = Texture(finish = Ambient(0.1) + Diffuse(0.7))
default_interior = Interior()
background = Black
recursion_limit = None
# Execute the input script
if not _args.quiet:
print("Parsing scene ...")
parse_timer = Timer()
with open(_args.input) as _fh:
exec(compile(_fh.read(), _args.input, "exec"))
parse_timer.stop()
# Make the canvas
canvas = Canvas(width = _args.region_width, height = _args.region_height)
canvas.optimize_PNG()
# Make the scene object
scene = Scene(canvas = canvas,
objects = objects,
lights = lights,
camera = camera)
scene.region_x = _args.region_x
scene.region_y = _args.region_y
scene.outer_width = _args.width
scene.outer_height = _args.height
scene.default_texture = default_texture
scene.background = background
if recursion_limit is not None:
scene.recursion_limit = recursion_limit
if _args.threads is not None:
scene.nthreads = _args.threads
if _args.quality is not None:
scene.quality = _args.quality
if _args.adc_bailout is not None:
_pattern = r"^(.*)/(.*)"
_match = _re.match(_pattern, _args.adc_bailout)
if _match is not None:
_args.adc_bailout = float(_match.group(1))/float(_match.group(2))
scene.adc_bailout = float(_args.adc_bailout)
# Raytrace the scene
if scene.nthreads == 1:
render_message = "Rendering scene"
else:
render_message = "Rendering scene (using %d threads)" % scene.nthreads
_progress_bar(render_message, scene.raytrace_async())
# Write the output file
export_timer = Timer()
_progress_bar("Writing %s" % _args.output, canvas.write_PNG_async(_args.output))
export_timer.stop()
# Print execution times
if _args.verbose:
print()
print("Parsing time: ", parse_timer)
print("Bounding time: ", scene.bounding_timer)
print("Rendering time: ", scene.render_timer)
print("Exporting time: ", export_timer)
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