script to download/run yet-another-cad-viewer

yacv

#!/bin/bash

PWD0=$(pwd)
SCRIPT_DIR=$(dirname "$0")

writePY () { 
        cat <<'EOF' > $SCRIPT_DIR/yet-another-cad-viewer-master/example/object.py
        # Optional: enable logging to see what's happening

import sys
import pdb

if len(sys.argv) < 3 or sys.argv[2] in ['--help', '-h']:
    print("Usage: yacv [files]")
    sys.exit(0)


import logging
import os

from build123d import *  # Also works with cadquery objects!

logging.basicConfig(level=logging.DEBUG)

from yacv_server import show, export_all  # Check out other exported methods for more features!
import subprocess
import pyinotify

files = []
for i in range(2, len(sys.argv)):
    if os.path.isabs(sys.argv[i]):
        files.append(sys.argv[i])
    else:
        files.append(sys.argv[1] + '/' + sys.argv[i])

ms = {}
def importShow(ev):
    print(f"importShow({ev})")
    for file in files:
            if ev is None or (ev is not None and ev.pathname == file):
                ms[file] = Mesher().read(file)

    objs = []
    names = []
    mask = []
    for n, m in ms.items():
        mask.append( (n == getattr(ev, 'pathname', None)) * len(m))
        objs = objs + m
        if len(ms) == 1:
                names.append(n)
        else:
                names = names + [ f"{n}{i}" for i in range(len(m)) ]

    prefix = os.path.commonprefix(names)
    names = [ n[len(prefix):] for n in names ]

    if len(names) == 1:
        names = os.path.basename(names[0])

    if ev is None:
        show(*objs, names=names)
    else:
        objs = [ objs[i] for i in range(len(objs)) if mask[i] ]
        names = [ names[i] for i in range(len(names)) if mask[i] ]
        show(*objs, names=names, auto_clear=False)

        

wm = pyinotify.WatchManager()
for file in files:
        wm.add_watch(file, pyinotify.IN_MODIFY)

importShow(None)
notifier = pyinotify.Notifier(wm, importShow)
subprocess.run("xdg-open http://localhost:${YACV_PORT:-32323}", shell=True)
notifier.loop()
EOF
}


# if the yet-another-cad-viewer-master is missing, download it
if [ ! -d $SCRIPT_DIR/yet-another-cad-viewer-master ]; then
        echo "Downloading yet-another-cad-viewer-master"
        git clone https://github.com/yeicor-3d/yet-another-cad-viewer.git $SCRIPT_DIR/yet-another-cad-viewer-master
        writePY
fi

# if this file is newer than the object.py, rewrite it
if [ $0 -nt $SCRIPT_DIR/yet-another-cad-viewer-master/example/object.py ]; then
        writePY
fi

cd $SCRIPT_DIR/yet-another-cad-viewer-master/example

# if the venv is missing, create it
if [ ! -d venv ]; then
        echo "Creating virtual environment"
        python3 -m venv venv
        . venv/bin/activate
        pip install -r requirements.txt
        pip install pyinotify
else
        . venv/bin/activate
fi

python object.py $PWD0 $*