Commands/Custom/SVG.CurvePath.ps.ps1
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function SVG.CurvePath { <# .SYNOPSIS Draws an SVG curve. .DESCRIPTION Draws an SVG curve path. .EXAMPLE =<svg> -OutputPath .\Curves.svg @( =<svg.CurvePath> -Start 10 -ControlPoint 15,5,20,40 -End 30,30 -fill transparent -stroke black ) -viewbox 50, 50 .LINK SVG.Path #> [inherit('SVG.path', Dynamic, Abstract)] [Alias('SVG.CurvedPath','=<SVG.CurvedPath>')] param( # One or two control points. # If two control points are provided, it will be assumed to be a Bezier curve. # If only one control point is provided, it will be assumed to be a Quadratic curve. [Parameter(ValueFromPipelineByPropertyName)] [double[]] $ControlPoint, # The start point of the curve. # If only one value is provided, it will be used as the X and Y coordinate. [Parameter(ValueFromPipelineByPropertyName)] [double[]] $Start, # The end point of the curve. # If only one value is provided, it will be used as the X and Y coordinate. [Parameter(ValueFromPipelineByPropertyName)] [double[]] $End, # If set, will attempt to draw a smooth bezier curve. [Parameter(ValueFromPipelineByPropertyName)] [switch] $Smooth, # If set, will draw a multi-quadratic line. # This can only be used if preceeded by another curve. [Parameter(ValueFromPipelineByPropertyName)] [switch] $MultiQuadratic, # If set, will draw a quadratic bezier curve. # This is the default, as it only requires a single control point. [Parameter(ValueFromPipelineByPropertyName)] [switch] $Quadratic, # If set, will close the path after this element. [Parameter(ValueFromPipelineByPropertyName)] [switch] $Close ) process { $existingPath = '' if ($PSBoundParameters.D) { $existingPath = $PSBoundParameters.D + ' ' } if ($_ -eq $PSBoundParameters.Content) { $null = $PSBoundParameters.Remove('Content') } if ($ControlPoint.Length -eq 1) { $ControlPoint = $ControlPoint[0], $ControlPoint[0] } if ($ControlPoint.Length -gt 4) { Write-Error "Up to two control points can be provided" return } $arcPath = @( if ($psBoundParameters.Keys -eq 'Start') { "M" if ($start.Length -gt 2) { Write-Error "-Start can only contain one or two values" return } elseif ($start.Length -eq 2) { $start[0],$start[1] } else { $start[0],$start[0] } } if ($ControlPoint.Length -ge 4) { "C" # Bezier curves have 2 control points } else { if ($Smooth) { "S" } elseif ($MultiQuadratic) { "T" } else{ "Q" } } for ($cpIndex =0 ; $cpIndex -lt $ControlPoint.Length; $cpIndex+=2 ) { $ControlPoint[$cpIndex] $ControlPoint[$cpIndex + 1] "," } if ($end.Length -gt 2) { Write-Error "-End can only contain one or two values." return } elseif ($end.Length -eq 2 ) { $End[0],$end[1] } elseif ($end.Length -eq 1) { $End[0],$end[0] } else { 0, 0 } if ($Close) { "Z" } ) -join ' ' $PSBoundParameters['D'] = $existingPath + $arcPath $baseSplat = [Ordered]@{} foreach ($k in $PSBoundParameters.Keys) { if ($baseCommand.Parameters[$k]) { $baseSplat[$k] = $PSBoundParameters[$k] } } SVG.Path @baseSplat } } |