| param([Parameter(Mandatory = $true)][string]$DataRoot)
|
| $ErrorActionPreference = 'Stop'
|
| $ProgressPreference = 'SilentlyContinue'
|
| [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12
|
| if (-not [Environment]::Is64BitOperatingSystem) {
|
| Write-Host 'This converter requires 64-bit Windows 10 or Windows 11.'
|
| exit 1
|
| }
|
| $cacheBase = $env:LOCALAPPDATA
|
| if ([string]::IsNullOrWhiteSpace($cacheBase)) { $cacheBase = $env:TEMP }
|
| $runtime = Join-Path $cacheBase 'MCBPointcloudConverter\runtime-v1'
|
| New-Item -ItemType Directory -Path $runtime -Force | Out-Null
|
| $env:UV_CACHE_DIR = Join-Path $runtime 'uv-cache'
|
| $env:UV_PYTHON_INSTALL_DIR = Join-Path $runtime 'python'
|
| $env:PYTHONUTF8 = '1'
|
| $env:PYTHONUNBUFFERED = '1'
|
| $uv = Join-Path $runtime 'uv.exe'
|
| $uvHashFile = Join-Path $runtime 'uv.sha256'
|
| $envLock = $null
|
| try {
|
| $envLock = [IO.File]::Open((Join-Path $runtime 'environment.lock'), [IO.FileMode]::OpenOrCreate, [IO.FileAccess]::ReadWrite, [IO.FileShare]::None)
|
| $cachedUvValid = $false
|
| if ((Test-Path $uv) -and (Test-Path $uvHashFile)) {
|
| $cachedUvValid = (Get-FileHash $uv -Algorithm SHA256).Hash -eq (Get-Content $uvHashFile -Raw).Trim()
|
| }
|
| if (-not $cachedUvValid) {
|
| Write-Host 'Downloading the pinned uv runtime from the official release...'
|
| $version = '0.13.0'
|
| $assetName = 'uv-x86_64-pc-windows-msvc.zip'
|
|
|
| $expectedHash = '088962f9e7b7bd9ea740c04c650b2a21c8928c345bd99ac24350dc924dba656c'
|
| $zip = Join-Path $runtime 'uv-download.zip'
|
| Invoke-WebRequest -UseBasicParsing -Uri "https://github.com/astral-sh/uv/releases/download/$version/$assetName" -OutFile $zip -TimeoutSec 1800
|
| if ((Get-FileHash $zip -Algorithm SHA256).Hash -ne $expectedHash) {
|
| throw 'uv download checksum mismatch. Please retry.'
|
| }
|
| $unpack = Join-Path $runtime 'uv-unpack'
|
| if (Test-Path $unpack) { Remove-Item $unpack -Recurse -Force }
|
| Expand-Archive -LiteralPath $zip -DestinationPath $unpack -Force
|
| $exe = Get-ChildItem -LiteralPath $unpack -Filter 'uv.exe' -File -Recurse | Select-Object -First 1
|
| if ($null -eq $exe) { throw 'uv.exe is missing from the downloaded archive.' }
|
| Copy-Item -LiteralPath $exe.FullName -Destination $uv -Force
|
| (Get-FileHash $uv -Algorithm SHA256).Hash | Set-Content -LiteralPath $uvHashFile -Encoding ASCII
|
| Remove-Item $zip -Force
|
| Remove-Item $unpack -Recurse -Force
|
| }
|
| $pythonRequest = 'cpython-3.12.15-windows-x86_64-none'
|
| Write-Host 'Preparing isolated Python 3.12.15 (no PATH or registry changes)...'
|
| & $uv --no-config --system-certs python install $pythonRequest --no-bin --no-registry
|
| if ($LASTEXITCODE -ne 0) { throw 'Python download failed. Check internet access and retry.' }
|
| $venv = Join-Path $runtime 'venv'
|
| $python = Join-Path $venv 'Scripts\python.exe'
|
| if (-not (Test-Path $python)) {
|
| & $uv --no-config --system-certs venv $venv --python $pythonRequest --managed-python
|
| if ($LASTEXITCODE -ne 0) { throw 'Could not create the isolated Python environment.' }
|
| }
|
| & $python -c "import importlib.util, sys; s=importlib.util.find_spec('numpy'); sys.exit(0 if s is not None and __import__('numpy').__version__ == '2.5.4' else 1)" 2>$null
|
| if ($LASTEXITCODE -ne 0) {
|
| Write-Host 'Installing NumPy 2.5.4...'
|
| & $uv --no-config --system-certs pip install --python $python 'numpy==2.5.4'
|
| if ($LASTEXITCODE -ne 0) { throw 'NumPy installation failed. Check internet access and retry.' }
|
| }
|
| $envLock.Dispose()
|
| $envLock = $null
|
| $source = Join-Path $DataRoot 'MCB_merged'
|
| $output = Join-Path $DataRoot 'MCB_pointcloud'
|
| $script = Join-Path $DataRoot '_pointcloud_converter\convert_mcb.py'
|
| $workers = '0'
|
| if (-not [string]::IsNullOrWhiteSpace($env:MCB_WORKERS)) { $workers = $env:MCB_WORKERS }
|
| & $python -u $script --source $source --output $output --workers $workers
|
| exit $LASTEXITCODE
|
| } catch {
|
| Write-Host ''
|
| Write-Host ('ERROR: ' + $_.Exception.Message) -ForegroundColor Red
|
| Write-Host ('Runtime cache: ' + $runtime)
|
| exit 1
|
| } finally {
|
| if ($null -ne $envLock) { $envLock.Dispose() }
|
| }
|
|
|
