From 66da7861f368255a2db5be0b6c1c532385687851 Mon Sep 17 00:00:00 2001 From: jaseg Date: Sat, 20 Apr 2024 18:18:20 +0200 Subject: Tidy up repo, add README --- bruder.py | 307 -------------------------------------------------------------- 1 file changed, 307 deletions(-) delete mode 100644 bruder.py (limited to 'bruder.py') diff --git a/bruder.py b/bruder.py deleted file mode 100644 index 1b46033..0000000 --- a/bruder.py +++ /dev/null @@ -1,307 +0,0 @@ -#!/usr/bin/env python3 - -import tempfile -import shutil -import webbrowser -import re -import base64 -import copy -import subprocess -import shlex -import os -import sys -import math -from pathlib import Path - -import click -from bs4 import BeautifulSoup - -from svg_util import * - - -def run_cargo_command(binary, *args, **kwargs): - # By default, try a number of options: - candidates = [ - # somewhere in $PATH - binary, - # wasi-wrapper in $PATH - f'wasi-{binary}', - # in user-local cargo installation - Path.home() / '.cargo' / 'bin' / binary, - # wasi-wrapper in user-local pip installation - Path.home() / '.local' / 'bin' / f'wasi-{binary}', - # next to our current python interpreter (e.g. in virtualenv) - str(Path(sys.executable).parent / f'wasi-{binary}') - ] - - return run_command(binary, *args, candidates=candidates, **kwargs) - - -def run_command(binary, *args, candidates=[], **kwargs): - cmd_args = [] - for key, value in kwargs.items(): - if value is not None: - if value is False: - continue - - if len(key) > 1: - cmd_args.append(f'--{key.replace("_", "-")}') - else: - cmd_args.append(f'-{key}') - - if value is not True: - cmd_args.append(str(value)) - cmd_args.extend(map(str, args)) - - # By default, try a number of options: - if not candidates: - candidates = [binary] - - # if envvar is set, try that first. - if (env_var := os.environ.get(Path(binary).name.replace('-', '_').upper())): - candidates = [str(Path(env_var).expanduser()), *candidates] - - for cand in candidates: - try: - res = subprocess.run([cand, *cmd_args], check=True) - break - except FileNotFoundError: - continue - else: - raise SystemError(f'{binary} executable not found') - - -def simplify_and_open_svg(data): - with tempfile.NamedTemporaryFile('w', suffix='.svg') as tmp_in_svg,\ - tempfile.NamedTemporaryFile('r', suffix='.svg') as tmp_out_svg: - tmp_in_svg.write(data) - tmp_in_svg.flush() - - try: - run_cargo_command('usvg', *shlex.split(os.environ.get('USVG_OPTIONS', '')), tmp_in_svg.name, tmp_out_svg.name) - except SystemError: - raise click.ClickException('Cannot find usvg. Please install usvg using cargo, or pass the full path to the usvg binary in the USVG environment variable.') - except subprocess.CalledProcessError as e: - raise click.ClickException(f'usvg exited with return code {e.returncode}.') - - return BeautifulSoup(tmp_out_svg.read(), 'xml') - - -def print_tape(png_file): - try: - run_command('ptouch-print', '--image', png_file) - except SystemError: - raise click.ClickException('Cannot find ptouch-print. Please install ptouch-print from the upstream repo at https://git.familie-radermacher.ch/linux/ptouch-print.git . You can pass the full path to the ptouch-print binary in the PTOUCH_PRINT environment variable if it\'s not in $PATH.') - except subprocess.CalledProcessError as e: - raise click.ClickException(f'ptouch-print exited with return code {e.returncode}.') - - -def do_dither(soup, magic_color, dpi, pixel_height): - for i, path in enumerate(list(soup.find_all('path'))): - if path.get('stroke').lower() != magic_color: - continue - path_id = path.get('id', '') - - commands = list(parse_path_d(path.get('d', ''))) - if len(commands) != 2: - print('Path', path_id, 'has magic color, but has more than two nodes. Ignoring.', file=sys.stderr) - continue - if commands[1][0] != 'L': - print('Path', path_id, 'has magic color, but has a curve. Ignoring.', file=sys.stderr) - continue - if commands[0][0] != 'M': - print('Path', path_id, 'has magic color, but is malformed (does not start with M command). Ignoring.', file=sys.stderr) - continue - (_c1, (x1, y1)), (_c2, (x2, y2)) = commands - - mat = Transform.parse_svg(path.get('transform', '')) - for parent in path.parents: - xf = Transform.parse_svg(parent.get('transform', '')) - mat = xf * mat # make sure we apply the parent transform from the left, i.e. after the child transform - x1, y1 = mat.transform_point(x1, y1) - x2, y2 = mat.transform_point(x2, y2) - path_len = math.dist((x1, y1), (x2, y2)) - - if math.isclose(path_len, 0, abs_tol=1e-3): - print('Path', path_id, 'has magic color, but has (almost) zero length. Ignoring.', file=sys.stderr) - continue - - if not (stroke_w := path.get('stroke-width')): - print('Path', path_id, 'has magic color, but has no defined stroke width. Ignoring.', file=sys.stderr) - continue - stroke_w = float(re.match('[-0-9.]+', stroke_w).group(0)) - - path_angle = math.atan2((y2-y1), (x2-x1)) - dx, dy = (x2-x1)/path_len, (y2-y1)/path_len - - sx1, sy1 = mat.transform_point(x1-dy*stroke_w/2, y1+dx*stroke_w/2) - sx2, sy2 = mat.transform_point(x1+dy*stroke_w/2, y1-dx*stroke_w/2) - stroke_w = round(math.dist((sx1, sy1), (sx2, sy2)), 3) - - out_soup = copy.copy(soup) - - #print(f'found path {path_id} of length {path_len:2f} and angle {math.degrees(path_angle):.1f} deg with physical stroke width {stroke_w:.2f} from ({x1:.2f}, {y1:.2f}) to ({x2:.2f}, {y2:.2f})', file=sys.stderr) - #out_soup.find('svg').append(out_soup.new_tag('path', fill='none', stroke='blue', stroke_width=f'24px', - # d=f'M {x1} {y1} L {x2} {y2}')) - xf = Transform.translate(0, stroke_w/2) * Transform.rotate(-path_angle) * Transform.translate(-x1, -y1) - g = out_soup.new_tag('g', id='transform-group', transform=xf.as_svg()) - k = list(out_soup.find('svg').contents) - for c in k: - g.append(c.extract()) - out_soup.find('svg').append(g) - out_soup.find('path', id=path['id']).parent.decompose() - out_soup.find('svg')['viewBox'] = f'0 0 {path_len} {stroke_w}' - out_soup.find('svg')['width'] = f'{path_len}mm' - out_soup.find('svg')['height'] = f'{stroke_w}mm' - - with tempfile.NamedTemporaryFile('w', suffix='.svg') as tmp_svg,\ - tempfile.NamedTemporaryFile('rb', suffix='.png') as tmp_png,\ - tempfile.NamedTemporaryFile('rb', suffix='.png') as tmp_dither: - tmp_svg.write(out_soup.prettify()) - tmp_svg.flush() - run_cargo_command('resvg', tmp_svg.name, tmp_png.name, width=round(Inch(path_len, 'mm')*dpi), height=pixel_height) - - run_command('didder', 'edm', '--serpentine', 'FloydSteinberg', palette='black white', i=tmp_png.name, o=tmp_dither.name) - yield (x1, y1, path_angle, stroke_w, path_len), tmp_dither.read() - - -def make_preview(input_svg, out_file, *dither_args, assembly_labels=False, **dither_kwargs): - imgs = [] - labels = [] - soup = simplify_and_open_svg(input_svg) - - for tape_num, ((x1, y1, path_angle, stroke_w, path_len), img) in enumerate(do_dither(soup, *dither_args, **dither_kwargs), start=1): - xf = f'translate({x1} {y1}) rotate({math.degrees(path_angle)}) translate(0 {-stroke_w/2})' - imgs.append(Tag('image', width=path_len, height=stroke_w, preserveAspectRatio='none', - id=f'preview_image_{tape_num}', - x=0, y=0, - transform=xf, - xlink__href=f'data:image/png;base64,{base64.b64encode(img).decode()}')) - labels.append(Tag('path', fill='none', stroke_width='0.2px', stroke='red', transform=xf, - d=f'M 0 0 h {path_len} v {stroke_w} h {-path_len} Z')) - labels.append(Tag('text', fill='red', stroke='none', font_size=f'{stroke_w*0.8}px', transform=xf, - x='2px', y=f'{stroke_w*0.9}px', children=[f'{tape_num}'])) - - layer = Tag('g', inkscape__layer='Preview', inkscape__groupmode='layer', id='layer_preview', children=[ - Tag('g', id='preview_images', children=imgs), - ]) - - if assembly_labels: - layer.children.append(Tag('g', id='assembly_instructions', children=labels)) - - vbx, vby, vbw, vbh = map(float, soup.find('svg')['viewBox'].split()) - bounds = (vbx, vby), (vbx+vbw, vby+vbh) - svg = setup_svg([layer], bounds, inkscape=True) - - if out_file is not None: - out_file.write(str(svg)) - else: - with tempfile.NamedTemporaryFile(suffix='.svg', mode='w', delete=False) as f: - f.write(str(svg)) - f.flush() - webbrowser.open_new_tab(f'file://{f.name}') - - -@click.group() -def cli(): - pass - -@cli.command() -@click.option('--num-rows', type=int, default=5, help='Number of tapes') -@click.option('--tape-width', type=float, default=24, help='Width of tape') -@click.option('--tape-border', type=float, default=3, help='Width of empty border at the edges of the tape in mm') -@click.option('--tape-spacing', type=float, default=2, help='Space between tapes') -@click.option('--tape-length', type=float, default=250, help='Length of tape segments') -@click.option('--magic-color', type=str, default='#cc0000', help='SVG color of tape') -@click.argument('output_svg', type=click.File(mode='w'), default='-') -def template(num_rows, tape_width, tape_border, tape_spacing, tape_length, magic_color, output_svg): - pitch = tape_width + tape_spacing - tags = [Tag('g', inkscape__layer='Layer 1', inkscape__groupmode='layer', id='layer1', children=[ - Tag('g', id='g1', children=[ - Tag('g', id=f'tape{i}', children=[ - Tag('path', id=f'tape{i}_outline', fill='none', stroke='black', opacity='0.3', stroke_width=f'{tape_width}px', - d=f'M 0 {tape_width/2 + i*pitch} {tape_length} {tape_width/2 + i*pitch}'), - Tag('path', id=f'tape{i}_printable_area', fill='none', stroke=magic_color, stroke_width=f'{tape_width-2*tape_border}px', - d=f'M 0 {tape_width/2 + i*pitch} {tape_length} {tape_width/2 + i*pitch}'), - ]) - for i in range(num_rows) - ]) - ])] - - bounds = (0, 0), (tape_length, num_rows*tape_width + (num_rows-1)*tape_spacing) - svg = setup_svg(tags, bounds, margin=tape_width, inkscape=True) - output_svg.write(str(svg)) - - -@cli.command('print') -@click.option('--magic-color', type=str, default='#cc0000', help='SVG color of tape') -@click.option('--dpi', type=float, default=180, help='Printer bitmap resolution in DPI') -@click.option('--pixel-height', type=int, default=127, help='Printer tape vertical pixel height') -@click.option('--confirm/--no-confirm', default=True, help='Ask for confirmation before printing each tape') -@click.option('--tape', type=str, default='-', help='The index numbers of which tapes to print. Comma-separate list, each entry is either a single number or a "3-5" style range where both ends are included.') -@click.argument('input_svg', type=click.File(mode='r'), default='-') -def cli_print(input_svg, tape, magic_color, dpi, pixel_height, confirm): - with tempfile.TemporaryDirectory() as tmpdir: - out = {} - - soup = simplify_and_open_svg(input_svg.read()) - for i, (_tape_pos, img) in enumerate(do_dither(soup, magic_color=magic_color, dpi=dpi, pixel_height=pixel_height), start=1): - f = Path(tmpdir) / f'dither_tape_{i}.png' - f.write_bytes(img) - out[i] = f - - selected = set() - for entry in tape.split(','): - start, sep, stop = entry.partition('-') - if not sep: - selected.add(int(start)) - else: - start = int(start) if start else min(out) - stop = int(stop) if stop else max(out) - selected |= set(range(start, stop+1)) - - for tape in sorted(selected): - if confirm: - if not click.confirm(f'Do you want to continue and print tape {tape}?'): - break - print_tape(out[tape]) - - -@cli.command() -@click.option('--magic-color', type=str, default='#cc0000', help='SVG color of tape') -@click.option('--dpi', type=float, default=180, help='Printer bitmap resolution in DPI') -@click.option('--pixel-height', type=int, default=127, help='Printer tape vertical pixel height') -@click.argument('input_svg', type=click.File(mode='r'), default='-') -@click.argument('output_svg', type=click.File(mode='w'), required=False) -def preview(input_svg, output_svg, magic_color, dpi, pixel_height): - make_preview(input_svg.read(), output_svg, magic_color=magic_color, dpi=dpi, pixel_height=pixel_height, assembly_labels=False) - - -@cli.command() -@click.option('--magic-color', type=str, default='#cc0000', help='SVG color of tape') -@click.option('--dpi', type=float, default=180, help='Printer bitmap resolution in DPI') -@click.option('--pixel-height', type=int, default=127, help='Printer tape vertical pixel height') -@click.argument('input_svg', type=click.File(mode='r'), default='-') -@click.argument('output_svg', type=click.File(mode='w'), required=False) -def assembly(input_svg, output_svg, magic_color, dpi, pixel_height): - make_preview(input_svg.read(), output_svg, magic_color=magic_color, dpi=dpi, pixel_height=pixel_height, assembly_labels=True) - - -@cli.command() -@click.option('--magic-color', type=str, default='#cc0000', help='SVG color of tape') -@click.option('--dpi', type=float, default=180, help='Printer bitmap resolution in DPI') -@click.option('--pixel-height', type=int, default=127, help='Printer tape vertical pixel height') -@click.argument('input_svg', type=click.File(mode='r'), default='-') -@click.argument('output_dir', type=click.Path(file_okay=False, dir_okay=True, path_type=Path)) -def dither(input_svg, output_dir, magic_color, dpi, pixel_height): - output_dir.mkdir(exist_ok=True) - soup = simplify_and_open_svg(input_svg.read()) - for i, (_tape_pos, img) in enumerate(do_dither(soup, magic_color=magic_color, dpi=dpi, pixel_height=pixel_height), start=1): - outfile = output_dir / f'dither_tape_{i}.png' - outfile.write_bytes(img) - print(f'Wrote {outfile}') - - -if __name__ == '__main__': - cli() - -- cgit