Commands/Shapes/SVG.ConvexPolygon.ps.ps1
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function SVG.ConvexPolygon { <# .SYNOPSIS SVG Convex Polygon .DESCRIPTION Creates a Regular Convex Polygon of an number of sides. .LINK SVG.Path .LINK SVG.Star #> [inherit(Command={ Import-Module ../../PSSVG.psd1 -Global 'SVG.Path' }, Abstract,Dynamic, ExcludeParameter='D')] [CmdletBinding(PositionalBinding=$false)] param( # The number of sides in the polygon # This is also aliased to -PointCount for consistent use with SVG.Star. [Parameter(ValueFromPipelineByPropertyName,Position=0)] [Alias('NumberOfSides','SC','Sides','NumSides','PC','D','PointCount')] [ValidateRange(3,360)] [int] $SideCount, # The initial rotation of the polygon. [Parameter(ValueFromPipelineByPropertyName)] [Alias('Rotation')] [double] $Rotate = 0, # The center X coordinate for the polygon. [Parameter(ValueFromPipelineByPropertyName)] [Alias('CX')] [double] $CenterX = 1, # The center Y coordinate for the polygon. [Parameter(ValueFromPipelineByPropertyName)] [Alias('CY')] [double] $CenterY = 1, # The radius of the polygon. [Parameter(ValueFromPipelineByPropertyName)] [Alias('R')] [double] $Radius = 1 ) process { # We can construct a regular polygon by creating N points along a unit circle $anglePerPoint = 360 / $SideCount $r = $Radius $angle = $Rotate $points = @( foreach ($sideNumber in 1..$SideCount) { $pointY = $centerY + $r * [math]::round([math]::cos($angle * [Math]::PI/180),15) $pointX = $centerX + $r * [math]::round([math]::sin($angle * [Math]::PI/180),15) if ($sideNumber -eq 1) { "M $pointX $pointY" } else { "L $pointX $pointY" } $angle += $anglePerPoint }) -join ' ' $myParams = [Ordered]@{} + $PSBoundParameters $myParams["D"] = "$points Z" $myParams.Remove('SideCount') $myParams.Remove('Rotate') $myParams.Remove('Radius') $myParams.Remove('CenterX') $myParams.Remove('CenterY') svg.Path @myParams } } |