Public/New-WordCloud.ps1
|
using namespace System.Collections.Generic using namespace System.Drawing using namespace System.Drawing.Drawing2D using namespace System.IO using namespace System.Management.Automation using namespace System.Management.Automation.Runspaces using namespace System.Numerics class SizeTransformAttribute : ArgumentTransformationAttribute { static [hashtable] $StandardSizes = @{ '720p' = [Size]::new(1280, 720) '1080p' = [Size]::new(1920, 1080) '4K' = [Size]::new(4096, 2160) } [object] Transform([EngineIntrinsics]$engineIntrinsics, [object] $inputData) { $Size = switch ($inputData) { { $_ -is [Size] } { $_ break } { $_ -is [SizeF] } { $_.ToSize() break } { $_ -is [int] -or $_ -is [double] } { [Size]::new($_, $_) break } { $_ -in [SizeTransformAttribute]::StandardSizes.Keys } { [SizeTransformAttribute]::StandardSizes[$_] break } { $_ -is [string] } { if ($_ -match '^(?<Width>[\d\.,]+)x(?<Height>[\d\.,]+)(px)?$') { [Size]::new($Matches['Width'], $Matches['Height']) break } if ($_ -match '^(?<Size>[\d\.,]+)(px)?$') { [Size]::new($Matches['Size'], $Matches['Size']) break } } default { throw [ArgumentTransformationMetadataException]::new("Unable to convert entered value $inputData to a valid [System.Drawing.Size].") } } $Area = $Size.Height * $Size.Width if ($Area -ge 100 * 100 -and $Area -le 20000 * 20000) { return $Size } else { throw [ArgumentTransformationMetadataException]::new( "Specified size $inputData is either too small to use for an image size, or would exceed GDI+ limitations." ) } } } class ColorTransformAttribute : ArgumentTransformationAttribute { static [string[]] $ColorNames = @( [KnownColor].GetEnumNames() "Transparent" ) [object] Transform([EngineIntrinsics]$engineIntrinsics, [object] $inputData) { $Items = switch ($inputData) { { $_ -eq $null -or $_ -eq 'Transparent' } { [Color]::Transparent continue } { $_ -as [KnownColor] } { [Color]::FromKnownColor($_ -as [KnownColor]) continue } { $_ -is [Color] } { $_ continue } { $_ -is [string] } { if ($_ -match 'R(?<Red>[0-9]{1,3})G(?<Green>[0-9]{1,3})B(?<Blue>[0-9]{1,3})') { [Color]::FromArgb($Matches['Red'], $Matches['Green'], $Matches['Blue']) continue } if ($_ -match 'R(?<Red>[0-9]{1,3})G(?<Green>[0-9]{1,3})B(?<Blue>[0-9]{1,3})A(?<Alpha>[0-9]{1,3})') { [Color]::FromArgb($Matches['Alpha'], $Matches['Red'], $Matches['Green'], $Matches['Blue']) continue } if ($MatchingValues = [KnownColor].GetEnumNames() -like $_) { ($MatchingValues -as [KnownColor[]]).ForEach{ [Color]::FromKnownColor($_) } } } { $_ -is [int] } { [Color]::FromArgb($_) continue } default { throw [ArgumentTransformationMetadataException]::new("Could not convert value '$_' to a valid [System.Drawing.Color] or [System.Drawing.KnownColor].") } } return $Items } } class FileTransformAttribute : ArgumentTransformationAttribute { [object] Transform([EngineIntrinsics]$engineIntrinsics, [object] $inputData) { $Items = switch ($inputData) { { $_ -as [FileInfo] } { $_ break } { $_ -is [string] } { $Path = Resolve-Path -Path $_ if (@($Path).Count -gt 1) { throw [ArgumentTransformationMetadataException]::new("Multiple files found, please enter only one: $($Path -join ', ')") } if (Test-Path -Path $Path -PathType Leaf) { [FileInfo]::new($Path) } break } default { throw [ArgumentTransformationMetadataException]::new("Could not convert value '$_' to a valid [System.IO.FileInfo] object.") } } return $Items } } function New-WordCloud { <# .SYNOPSIS Creates a word cloud from the input text. .DESCRIPTION Measures the frequency of use of each word, taking into account plural and similar forms, and creates an image with each word's visual size corresponding to the frequency of occurrence in the input text. .PARAMETER InputObject The string data to examine and create the word cloud image from. Any non-string data piped in will be passed through Out-String first to obtain a proper string representation of the object, which will then be broken down into its constituent words. .PARAMETER Path The output path of the word cloud. .PARAMETER ColorSet Define a set of colors to use when rendering the word cloud. Any array of values in any mix of the following formats is acceptable: - Strings denoting a color name, or a wildcarded color name that matches one or more colors, e.g., *blue* - Valid [System.Drawing.Color] objects - Valid [System.Drawing.KnownColor] values in enum or string format - Strings of the format r255g255b255 or r255g255b255a255 where the integers are the R, G, B, and optionally Alpha values of the desired color. - Any valid integer value; these are passed directly to [System.Drawing.Color]::FromArgb($Integer) to be converted into valid colors. .PARAMETER MaxColors Limit the maximum number of colors from either the standard or custom set that will be used. A random selection of this many colors will be used to render the word cloud. .PARAMETER FocusWord Specifies a title or centred focus word to insert into the word cloud. This word will be rendered in the middle of the cloud, slightly larger than the largest word in the cloud. .PARAMETER ExcludeWord Specifies one or more words to exclude from the word cloud. .PARAMETER FontFamily Specify the font family as a string or [FontFamily] value. .PARAMETER FontStyle Specify the font style to use for the word cloud. .PARAMETER StrokeColor Specify the color of outline to use when rendering words. .PARAMETER StrokeWidth Specify the width of the outline to use use when rendering words. Off by default. .PARAMETER ImageSize Specify the image size to use in pixels. The image dimensions can be any value between 500 and 20,000px. Any of the following size specifier formats are permitted: - Any valid [System.Drawing.Size] object - Any valid [System.Drawing.SizeF] object - 1000x1000 - 1000x1000px - 1000 - 1000px - 720p (Creates an image of size 1280x720px) - 1080p (Creates an image of size 1920x1080px) - 4K (Creates an image of size 4096x2160px) 4096x2160 will be used by default. Note that the minimum image resolution is 10,000 pixels (100 x 100px), and the maximum resolution is 400,000,000 pixels (20,000 x 20,000px, 400MP). .PARAMETER DistanceStep The number of pixels to increment per radial sweep. Higher values will make the operation quicker, but may reduce the effectiveness of the packing algorithm. Lower values will take longer, but will generally ensure a more tightly-packed word cloud. .PARAMETER RadialGranularity The number of radial points at each distance step to check during a single sweep. This value is scaled as the radius expands to retain some consistency in the overall step distance as the distance from the center increases. .PARAMETER BackgroundColor Set the background color of the image. Colors with similar names to the background color are automatically excluded from being selected for use in word coloring. Any value in of the following formats is acceptable: - Valid [System.Drawing.Color] objects - Valid [System.Drawing.KnownColor] values in enum or string format - Strings of the format r255g255b255 or r255g255b255a255 where the integers are the R, G, B, and optionally Alpha values of the desired color. - Any valid integer value; these are passed directly to [System.Drawing.Color]::FromArgb($Integer) to be converted into valid colors. Specify $null or Transparent as the background color value to render the word cloud on a transparent background. .PARAMETER Monochrome Use only shades of grey to create the word cloud. .PARAMETER OutputFormat Specify the output image file format to use. .PARAMETER BackgroundImage Specify a base image to superimpose the word cloud on. The image will not be resized. .PARAMETER MaxUniqueWords Specify the maximum number of words to include in the word cloud. 100 is default. If there are fewer unique words than the maximum amount, all unique words will be rendered. .PARAMETER RandomSeed Specify an integer seed value to generate randomness from. Identical seed and input values should render comparable word clouds. .PARAMETER Padding Specify the bounded spacing between words. This is calculated as additional distance from the prior drawn paths and each new word placement attempt. Higher values will tend to take longer to render, but tend to look neater. 3.5 is the default. Specify 0 for no minimum spacing and negative values to allow words to overlap. .PARAMETER WordScale Adjust the word scaling. 1 is the default. .PARAMETER AllowOverflow Toggles whether words are permitted to be drawn partially crossing the boundary of the iamge. .PARAMETER DisableWordRotation Disables drawing words vertically. .PARAMETER BoxCollisions Reverts collision detection to the slightly faster but more boxy detection methods based purely on path bounds rather than the path shape itself. .PARAMETER AllowStopWords Removes the standard ignored words from the ignore list. The standard ignore list ignores single-letter words and some of the most common shorter English words. .EXAMPLE Get-Content .\Words.txt | New-WordCloud -Path .\WordCloud.png Generates a word cloud from the words in the specified file, and saves it to the specified image file. .NOTES Only the top 100 most frequent words will be included in the word cloud by default; typically, words that fall under this ranking end up being impossible to render cleanly except on very high resolutions. The word cloud will be rendered according to the image size; landscape or portrait configurations will result in ovoid clouds, whereas square images will result mainly in circular clouds. #> [CmdletBinding(DefaultParameterSetName = 'ColorBackground', SupportsShouldProcess)] [Alias('wordcloud', 'wcloud')] param( [Parameter(Mandatory, Position = 0, ValueFromPipeline, ParameterSetName = 'ColorBackground')] [Parameter(Mandatory, Position = 0, ValueFromPipeline, ParameterSetName = 'ColorBackground-Mono')] [Parameter(Mandatory, Position = 0, ValueFromPipeline, ParameterSetName = 'FileBackground')] [Parameter(Mandatory, Position = 0, ValueFromPipeline, ParameterSetName = 'FileBackground-Mono')] [Alias('InputString', 'Text', 'String', 'Words', 'Document', 'Page')] [AllowEmptyString()] [object[]] $InputObject, [Parameter(Mandatory, Position = 1, ParameterSetName = 'ColorBackground')] [Parameter(Mandatory, Position = 1, ParameterSetName = 'ColorBackground-Mono')] [Parameter(Mandatory, Position = 1, ParameterSetName = 'FileBackground')] [Parameter(Mandatory, Position = 1, ParameterSetName = 'FileBackground-Mono')] [Alias('OutFile', 'ExportPath', 'ImagePath')] [ValidateScript( { Test-Path -IsValid $_ -PathType Leaf } )] [string[]] $Path, [Parameter(ParameterSetName = 'ColorBackground')] [Parameter(ParameterSetName = 'ColorBackground-Mono')] [Parameter(ParameterSetName = 'FileBackground')] [Parameter(ParameterSetName = 'FileBackground-Mono')] [Alias('ColourSet')] [ArgumentCompleter( { param($Command, $Parameter, $WordToComplete, $CommandAst, $FakeBoundParams) if (!$WordToComplete) { return [ColorTransformAttribute]::ColorNames } else { return [ColorTransformAttribute]::ColorNames.Where{ $_ -match "^$WordToComplete" } } } )] [ColorTransformAttribute()] [Color[]] $ColorSet = [ColorTransformAttribute]::ColorNames, [Parameter()] [Alias('MaxColours')] [int] $MaxColors = [int]::MaxValue, [Parameter()] [Alias('Title')] [string] $FocusWord, [Parameter()] [Alias('IgnoreWord')] [string[]] $ExcludeWord, [Parameter()] [Alias('FontFace')] [ArgumentCompleter( { param($Command, $Parameter, $WordToComplete, $CommandAst, $FakeBoundParams) $FontLibrary = [FontFamily]::Families.Name.Where{-not [string]::IsNullOrWhiteSpace($_)} if (!$WordToComplete) { return $FontLibrary -replace '(?="|`|\$)', '`' -replace '^|$', '"' } else { return $FontLibrary.Where{$_ -match "^('|`")?$([regex]::Escape($WordToComplete))"} -replace '(?="|`|\$)', '`' -replace '^|$', '"' } } )] [FontFamily] $FontFamily = [FontFamily]::new('Consolas'), [Parameter()] [FontStyle] $FontStyle = [FontStyle]::Regular, [Parameter()] [Alias('StrokeColour')] [ArgumentCompleter( { param($Command, $Parameter, $WordToComplete, $CommandAst, $FakeBoundParams) if (!$WordToComplete) { return [ColorTransformAttribute]::ColorNames } else { return [ColorTransformAttribute]::ColorNames.Where{ $_ -match "^$WordToComplete" } } } )] [ColorTransformAttribute()] [Color] $StrokeColor = [Color]::Black, [Parameter()] [Alias('Outline')] [double] $StrokeWidth, [Parameter(ParameterSetName = 'ColorBackground')] [Parameter(ParameterSetName = 'ColorBackground-Mono')] [Alias('ImagePixelSize')] [ArgumentCompleter( { param($Command, $Parameter, $WordToComplete, $CommandAst, $FakeBoundParams) $Values = @('720p', '1080p', '4K', '640x1146', '480x800') if ($WordToComplete) { return $Values.Where{$_ -match "^$WordToComplete"} } else { return $Values } } )] [SizeTransformAttribute()] [Size] $ImageSize = [Size]::new(4096, 2160), [Parameter()] [ValidateRange(1, 500)] $DistanceStep = 5, [Parameter()] [ValidateRange(1, 50)] $RadialGranularity = 15, [Parameter(ParameterSetName = 'ColorBackground')] [Parameter(ParameterSetName = 'ColorBackground-Mono')] [Alias('BackgroundColour')] [ArgumentCompleter( { param($Command, $Parameter, $WordToComplete, $CommandAst, $FakeBoundParams) if (!$WordToComplete) { return [ColorTransformAttribute]::ColorNames } else { return [ColorTransformAttribute]::ColorNames.Where{ $_ -match "^$WordToComplete" } } } )] [ColorTransformAttribute()] [Color] $BackgroundColor = [Color]::Black, [Parameter(Mandatory, ParameterSetName = 'ColorBackground-Mono')] [Parameter(Mandatory, ParameterSetName = 'FileBackground-Mono')] [Alias('Greyscale', 'Grayscale')] [switch] $Monochrome, [Parameter()] [Alias('ImageFormat', 'Format')] [ValidateSet('Bmp', 'Emf', 'Exif', 'Gif', 'Jpeg', 'Png', 'Tiff', 'Wmf')] [string] $OutputFormat = 'Png', [Parameter(Mandatory, ParameterSetName = 'FileBackground')] [Parameter(Mandatory, ParameterSetName = 'FileBackground-Mono')] [Alias('BaseImage')] [FileTransformAttribute()] [FileInfo] $BackgroundImage, [Parameter()] [Alias('MaxWords')] [ValidateRange(0, 1000)] [int] $MaxUniqueWords = 100, [Parameter()] [Alias('Seed')] [int] $RandomSeed, [Parameter()] [Alias('Spacing')] [double] $Padding = 3.5, [Parameter()] [Alias('Scale', 'FontScale')] [double] $WordScale = 1, [Parameter()] [Alias('DisableClipping', 'NoClip')] [switch] $AllowOverflow, [Parameter()] [Alias('DisableRotation', 'NoRotation')] [switch] $DisableWordRotation, [Parameter()] [Alias('Boxy')] [switch] $BoxCollisions, [Parameter()] [switch] $AllowStopWords ) begin { Write-Debug "Color set: $($ColorSet -join ', ')" Write-Debug "Background color: $BackgroundColor" $StopWordsPattern = @( switch ($true) { (-not $AllowStopWords) { (Get-Content "$script:ModuleRoot/Data/StopWords.txt") } ([bool] $ExcludeWord) { $ExcludeWord } } ).ForEach{[Regex]::Escape($_)} -join '|' $SplitChars = " .,`"?!{}[]:()`“`”™*#%^&+=" -as [char[]] $ColorIndex = 0 $RadialDistance = 0 $GraphicsUnit = [GraphicsUnit]::Pixel $WordList = [List[string]]::new(128) $WordHeightTable = @{} $WordSizeTable = @{} $RNG = if ($PSBoundParameters.ContainsKey('RandomSeed')) { [Random]::new($RandomSeed) } else { [Random]::new() } $ProgressID = $RNG.Next() $ExportFormat = $OutputFormat | Get-ImageFormat if ($PSCmdlet.ParameterSetName -eq 'Monochrome') { $MinSaturation = 0 } else { $MinSaturation = 0.5 } $PathList = foreach ($FilePath in $Path) { if ($FilePath -notmatch "\.$OutputFormat$") { $FilePath += $OutputFormat } if (-not (Test-Path -Path $FilePath)) { (New-Item -ItemType File -Path $FilePath).FullName } else { (Get-Item -Path $FilePath).FullName } } $ColorList = $ColorSet | Sort-Object {Get-Random} | Select-Object -First $MaxColors | ForEach-Object { if (-not $Monochrome) { $_ } else { [int]$Brightness = $_.GetBrightness() * 255 [Color]::FromArgb($Brightness, $Brightness, $Brightness) } } | Where-Object { if ($BackgroundColor) { $_.Name -notmatch $BackgroundColor -and $_.GetSaturation() -ge $MinSaturation } else { $_.GetSaturation() -ge $MinSaturation } } | Sort-Object -Descending { $Value = $_.GetBrightness() $Random = (-$Value..$Value | Get-Random) / (1 - $_.GetSaturation()) $Value + $Random } $RunspacePool = [RunspaceFactory]::CreateRunspacePool(1, 15) [List[PSCustomObject]] $RSJobs = [List[PSCustomObject]]::new() $InputProcessingScript = { param($Strings, $SplitChars, $ExcludedWords) foreach ($Item in $Strings) { if ($Item -isnot [string]) { [string] $Item = $Item | Out-String } @($Item -split "\r?\n").Split($SplitChars, [StringSplitOptions]::RemoveEmptyEntries).Where{ $_ -notmatch "^($ExcludedWords)s?$|^[^a-z]+$|[^a-z0-9'_-]" -and $_.Length -gt 1 } -replace "^('|_)|('|_)$" } } $RunspacePool.Open() $JobsStarted = 0 $JobsReceived = 0 $LineCount = 0 $WordCount = 0 [List[object]] $InputStorage = [List[object]]::new() } process { $InputStorage.AddRange($InputObject) if ($InputStorage.Count -ge 2500) { $WordCount = $WordList.Count $LineCount += $InputStorage.Count $PowerShell = [PowerShell]::Create().AddScript( $InputProcessingScript ).AddArgument($InputStorage.ToArray()).AddArgument($SplitChars).AddArgument($StopWordsPattern) $PowerShell.RunspacePool = $RunspacePool $ProgressParams = @{ Activity = "Processing Input Items: $LineCount" Status = "Jobs: <Run> $JobsStarted <Completed> $JobsReceived" Id = $ProgressID CurrentOperation = "Splitting text into words. Word count: $WordCount" } Write-Progress @ProgressParams $RSJobs.Add( [PSCustomObject]@{ Instance = $PowerShell Result = $PowerShell.BeginInvoke() } ) $JobsStarted ++ $InputStorage.Clear() } if ($JobsStarted % 10 -eq 1) { foreach ($Runspace in $RSJobs.Where{$_.Result.IsCompleted}) { $Result = [string[]] $Runspace.Instance.EndInvoke($Runspace.Result) $WordList.AddRange($Result) $RSJobs.Remove($Runspace) > $null $JobsReceived ++ } } } end { if ($InputStorage.Count -gt 0) { $WordCount = $WordList.Count $LineCount += $InputStorage.Count $PowerShell = [PowerShell]::Create().AddScript( $InputProcessingScript ).AddArgument($InputStorage.ToArray()).AddArgument($SplitChars).AddArgument($StopWordsPattern) $PowerShell.RunspacePool = $RunspacePool $ProgressParams = @{ Activity = "Processing Input Items: $LineCount" Status = "Jobs: <Run> $JobsStarted <Completed> $JobsReceived" Id = $ProgressID CurrentOperation = "Splitting text into words. Word count: $WordCount" } Write-Progress @ProgressParams $RSJobs.Add( [PSCustomObject]@{ Instance = $PowerShell Result = $PowerShell.BeginInvoke() } ) $JobsStarted ++ $InputStorage.Clear() } do { $Completed = $RSJobs.Where{$_.Result.IsCompleted} foreach ($Runspace in $Completed) { [string[]] $Result = $Runspace.Instance.EndInvoke($Runspace.Result) $WordList.AddRange($Result) $RSJobs.Remove($Runspace) > $null $JobsReceived ++ $ProgressParams = @{ Activity = "Processed Input Items: $LineCount" Status = "Jobs Run: $JobsStarted Completed: $JobsReceived" Id = $ProgressID CurrentOperation = "Collating processed words from jobs" } Write-Progress @ProgressParams } Start-Sleep -Milliseconds 10 } until ($RSJobs.Count -eq 0) # Count occurrence of each word switch ($WordList.ToArray()) { { $WordHeightTable[($_ -replace 's$')] } { $WordHeightTable[($_ -replace 's$')] ++ continue } { $WordHeightTable["${_}s"] } { $WordHeightTable[$_] = $WordHeightTable["${_}s"] + 1 $WordHeightTable.Remove("${_}s") continue } default { $WordHeightTable[$_] ++ continue } } if ($PSBoundParameters.ContainsKey('FocusWord')) { $WordHeightTable[$FocusWord] = $WordHeightTable.GetEnumerator() | ForEach-Object Value | Measure-Object -Maximum | ForEach-Object Maximum $WordHeightTable[$FocusWord] *= 1.25 } $WordHeightTable | Out-String | Write-Debug $SortedWordList = $WordHeightTable.GetEnumerator().Name | Sort-Object -Descending { $WordHeightTable[$_] } if ($MaxUniqueWords) { $SortedWordList = $SortedWordList | Select-Object -First $MaxUniqueWords } $LowestFrequency, $HighestFrequency, $AverageFrequency = $SortedWordList | ForEach-Object { $WordHeightTable[$_] } | Measure-Object -Average -Maximum -Minimum | ForEach-Object {$_.Minimum, $_.Maximum, $_.Average} try { if ($BackgroundImage.FullName) { [Bitmap] $WordCloudImage = [Bitmap]::new($BackgroundImage.FullName) $WordCloudImage.SetResolution(96, 96) [Graphics] $DrawingSurface = [Graphics]::FromImage($WordCloudImage) } else { [Bitmap] $WordCloudImage = [Bitmap]::new($ImageSize.Width, $ImageSize.Height) $WordCloudImage.SetResolution(96, 96) [Graphics] $DrawingSurface = [Graphics]::FromImage($WordCloudImage) $DrawingSurface.Clear($BackgroundColor) } $DrawingSurface.PageScale = 1.0 $DrawingSurface.PageUnit = $GraphicsUnit $DrawingSurface.SmoothingMode = [SmoothingMode]::AntiAlias $DrawingSurface.TextRenderingHint = [Text.TextRenderingHint]::ClearTypeGridFit $MaxSideLength = [Math]::Max($WordCloudImage.Width, $WordCloudImage.Height) Write-Verbose "Graphics Surface Properties:" $Properties = @( 'RenderingOrigin' 'CompositingQuality' 'TextRenderingHint' 'SmoothingMode' 'PixelOffsetMode' 'DpiX' 'DpiY' 'PageScale' 'VisibleClipBounds' ) $DrawingSurface | Select-Object -Property $Properties | Out-String | Write-Verbose Write-Verbose "Bitmap Properties:" $Properties = @( 'Size' 'PixelFormat' 'RawFormat' 'HorizontalResolution' 'VerticalResolution' ) $WordCloudImage | Select-Object -Property $Properties | Out-String | Write-Verbose $FontScale = $WordScale * 1.6 * ($WordCloudImage.Height + $WordCloudImage.Width) / ($AverageFrequency * $SortedWordList.Count) :size do { $ScaledWordHeightTable = @{} foreach ($Word in $SortedWordList) { $ScaledWordHeightTable[$Word] = [Math]::Round( $WordHeightTable[$Word] * $FontScale * ( 2 * $RNG.NextDouble() / (1 + $HighestFrequency - $LowestFrequency) + 0.9 ) ) if ($ScaledWordHeightTable[$Word] -lt 8) { continue } $Font = [Font]::new( $FontFamily, $ScaledWordHeightTable[$Word], $FontStyle, $GraphicsUnit ) $WordSize = $DrawingSurface.MeasureString($Word, $Font) if ($Padding) { $WordSize += [SizeF]::new($Padding, $Padding) } $WordFits = ( ($AllowOverflow -and [Math]::Max($WordSize.Width, $WordSize.Height)) -or ($DisableWordRotation -and $WordSize.Width -lt $WordCloudImage.Width) -or [Math]::Max($WordSize.Width, $WordSize.Height) -lt $MaxSideLength ) if ($WordFits) { $WordSizeTable[$Word] = $WordSize } else { # Reset table and recalculate sizes (should only ever happen for the first few words at most) $WordSizeTable.Clear() $FontScale *= 0.98 continue size } } # If we reach here, no words are larger than the image $SortedWordList = $SortedWordList.Where{$WordSizeTable.ContainsKey($_)} $MaxFontSize = $ScaledWordHeightTable[$SortedWordList[0]] $MinFontSize = $ScaledWordHeightTable[$Word] break } while ($true) } catch { $PSCmdlet.WriteError($_) if ($DrawingSurface) { $DrawingSurface.Dispose() } if ($DummyImage) { $WordCloudImage.Dispose() } } $GCD = Get-GreatestCommonDivisor -Numerator $MaxSideLength -Denominator ([Math]::Min($WordCloudImage.Width, $WordCloudImage.Height)) $AspectRatio = $WordCloudImage.Width / $WordCloudImage.Height $CentrePoint = [PointF]::new($WordCloudImage.Width / 2, $WordCloudImage.Height / 2) [PSCustomObject]@{ ExportFormat = $ExportFormat TotalWords = $WordList.Count UniqueWords = $WordHeightTable.GetEnumerator().ForEach{$_}.Count DisplayedWords = if ($MaxUniqueWords) { [Math]::Min($SortedWordList.Count, $MaxUniqueWords) } else { $SortedWordList } HighestFrequency = $HighestFrequency AverageFrequency = '{0:N2}' -f $AverageFrequency MaxFontSize = $MaxFontSize MinFontSize = $MinFontSize ImageSize = $WordCloudImage.Size ImageCentre = $CentrePoint AspectRatio = "$($WordCloudImage.Width / $GCD) : $($WordCloudImage.Height / $GCD)" FontFamily = $FontFamily.Name } | Out-String | Write-Verbose try { $BlankCanvas = $true [Region]$ForbiddenArea = [Region]::new() $ForbiddenArea.MakeInfinite() $UsableSpace = $DrawingSurface.VisibleClipBounds if ($AllowOverflow) { $UsableSpace.Inflate($UsableSpace.Width / 3, $UsableSpace.Height / 3) } $MaxRadialDistance = [Math]::Max($UsableSpace.Width, $UsableSpace.Height) / 2 $ForbiddenArea.Exclude($UsableSpace) $WordCount = 0 $WordPath = [GraphicsPath]::new([FillMode]::Winding) :words foreach ($Word in $SortedWordList) { $WordCount++ $ProgressParams = @{ Activity = "Generating word cloud" CurrentOperation = "Drawing '{0}' at {1} em ({2} of {3})" -f @( $Word $ScaledWordHeightTable[$Word] $WordCount $SortedWordList.Count ) PercentComplete = ($WordCount / $SortedWordList.Count) * 100 Id = $ProgressID } Write-Progress @ProgressParams $RadialDistance = 0 $Color = $ColorList[$ColorIndex] $Brush = [SolidBrush]::new($Color) if ($PSBoundParameters.ContainsKey('StrokeWidth')) { $PenWidth = $ScaledWordHeightTable[$Word] * ($StrokeWidth / 100) $StrokePen = [Pen]::new([SolidBrush]::new($StrokeColor), $PenWidth) } do { if ($RadialDistance -gt $MaxRadialDistance) { continue words } $AngleIncrement = 360 / ( ($RadialDistance + 1) * $RadialGranularity / 10 ) switch ([int]$RNG.Next() -band 7) { 0 { $Start = 0; $End = 360 } 1 { $Start = -90; $End = 270 } 2 { $Start = -180; $End = 180 } 3 { $Start = -270; $End = 90 } 4 { $Start = 360; $End = 0; $AngleIncrement *= -1 } 5 { $Start = 270; $End = -90; $AngleIncrement *= -1 } 6 { $Start = 180; $End = -180; $AngleIncrement *= -1 } 7 { $Start = 90; $End = -270; $AngleIncrement *= -1 } } :angles for ( $Angle = $Start; $( if ($Start -lt $End) {$Angle -le $End} else {$End -le $Angle} ); $Angle += $AngleIncrement ) { if ($DisableWordRotation) { $FormatList = [StringFormat]::new() } else { $FormatList = @( [StringFormat]::new(), [StringFormat]::new([StringFormatFlags]::DirectionVertical) ) | Sort-Object { $RNG.Next() } } foreach ($Format in @($FormatList)) { $WordIntersects = $false $WriteVertical = $Format.FormatFlags -eq [StringFormatFlags]::DirectionVertical $Radians = Convert-ToRadians -Degrees $Angle $Complex = [Complex]::FromPolarCoordinates($RadialDistance, $Radians) $OffsetX = $WordSizeTable[$Word].Width * 0.5 $OffsetY = $WordSizeTable[$Word].Height * 0.5 if ($WordHeightTable[$Word] -ne $HighestFrequency) { $OffsetX = $OffsetX * ($RNG.NextDouble() + 0.25) $OffsetY = $OffsetY * ($RNG.NextDouble() + 0.25) } $DrawLocation = if ($WriteVertical) { [PointF]::new( $Complex.Real * $AspectRatio + $CentrePoint.X - $OffsetY, $Complex.Imaginary + $CentrePoint.Y - $OffsetX ) } else { [PointF]::new( $Complex.Real * $AspectRatio + $CentrePoint.X - $OffsetX, $Complex.Imaginary + $CentrePoint.Y - $OffsetY ) } if (-not $UsableSpace.Contains($DrawLocation)) { continue angles } $WordPath.Reset() $WordPath.FillMode = [FillMode]::Winding $WordPath.AddString( $Word, $FontFamily, [int]$FontStyle, $ScaledWordHeightTable[$Word], $DrawLocation, $Format ) $Bounds = $WordPath.GetBounds() $InflationValue = ( $ScaledWordHeightTable[$Word] / 10 ) * $Padding + $PenWidth $Bounds.Inflate($InflationValue, $InflationValue) [bool] $WordIntersects = -not $BlankCanvas -and $ForbiddenArea.IsVisible($Bounds, $DrawingSurface) $ProgressParams = @{ Activity = "Testing draw location" CurrentOperation = "Checking for sufficient space to draw at {0} {1}" -f @( $DrawLocation @('Horizontally', 'Vertically')[$WriteVertical] ) ParentId = $ProgressID Id = $ProgressID + 1 } Write-Progress @ProgressParams if ($WordIntersects) { continue angles } # Available location found; draw word and loop back to words if ($BoxCollisions) { $ForbiddenArea.Union($Bounds) } else { $ForbiddenArea.Union($WordPath) } $DrawingSurface.FillPath($Brush, $WordPath) if ($StrokePen) { $DrawingSurface.DrawPath($StrokePen, $WordPath) } if ($BlankCanvas) { $BlankCanvas = $false } $ColorIndex++ if ($ColorIndex -ge $ColorList.Count) { $ColorIndex = 0 } continue words } } # No available free space anywhere in this radial scan, keep scanning $RadialDistance += $RNG.NextDouble() * ($Bounds.Width + $Bounds.Height) * $DistanceStep / [Math]::Max(1, 21 - $Padding * 2) } while ($WordIntersects) } # All words written that we can, wait for any remaining draw operations to finish before saving. $DrawingSurface.Flush([FlushIntention]::Sync) foreach ($FilePath in $PathList) { if ($PSCmdlet.ShouldProcess($FilePath, 'Save word cloud to file')) { $WordCloudImage.Save($FilePath, $ExportFormat) } } } catch { $PSCmdlet.WriteError($_) } finally { $DrawingSurface.Dispose() $WordCloudImage.Dispose() $WordPath.Dispose() } } } |