Types/Turtle/set_Fill.ps1
|
<# .SYNOPSIS Sets a Turtle's fill color .DESCRIPTION Sets one or more colors used to fill the Turtle. By default, this is transparent. If more than one value is provided, the fill will be a gradient. .EXAMPLE # Draw a blue square turtle square 42 fill blue .EXAMPLE # Draw a PowerShell blue square turtle square 42 fill '#4488ff' .EXAMPLE # Draw a red, green, blue gradient turtle square 42 fill red green blue show .EXAMPLE # Draw a red, green, blue linear gradient turtle square 42 fill red green blue linear show .EXAMPLE turtle flower fill red green blue fillrule evenodd show #> param( [PSObject[]] $Fill = 'transparent' ) # If we have no fill information, return if (-not $fill) { return } # If the fill count is greater than one, try to make a graidnet if ($fill.Count -gt 1) { # Default to a radial gradient $gradientTypeHint = 'radial' # and create a collection for attributes $gradientAttributes = [Ordered]@{ # default our identifier to the current id plus `fill-gradient` # (so we could have multiple gradients without a collision) id="$($this.id)-fill-gradient" } $fill = @(foreach ($color in $fill) { # If the value matches `linear` or `radial` if ($color -match '^(linear|radial)') { # take the hint and make it the right type of gradient. $gradientTypeHint = ($color -replace 'gradient').ToLower() } # If the color was `pad`, `reflect`, or `repeat` elseif ($fillColor -in 'pad', 'reflect', 'repeat') { # take the hint and set the spreadMethod $gradientAttributes['spreadMethod'] = $color } # If the fill is a dictionary elseif ($color -is [Collections.IDictionary]) { # propagate the values into attributes. foreach ($gradientAttributeKey in $color.Keys) { $gradientAttributes[$gradientAttributeKey] = $color[$gradientAttributeKey] } } # Otherwise output the color else { $color } }) # If we have no fill colors after filtering, return if (-not $fill) { return } # If our count is one if ($fill.Count -eq 1) { # it's not really going to be a gradient, so just use the one color. $this | Add-Member -MemberType NoteProperty -Name '.Fill' -Value $Fill -Force return } # Now we have at least two colors we want to be a gradient # We need to make sure the offset starts at 0% an ends at 100% # and so we actually need to divide by one less than our fill color, so we end at 100%. $offsetStep = 1 / ($fill.Count - 1) $Gradient = @( # Construct our gradient element. "<${gradientTypeHint}Gradient$( # propagate our attributes @(foreach ($gradientAttributeKey in $gradientAttributes.Keys) { " $gradientAttributeKey='$($gradientAttributes[$gradientAttributeKey])'" }) -join '' )>" @( # and put in our stop colors for ($fillNumber = 0; $fillNumber -lt $fill.Count; $fillNumber++) { "<stop offset='$($offsetStep * $fillNumber * 100)%' stop-color='$($fill[$fillNumber])' />" } ) "</${gradientTypeHint}Gradient>" ) -join [Environment]::NewLine # add this gradient to our defines $this.Defines += $Gradient # and set fill to this gradient. $fill = "url(`"#$($gradientAttributes.id)`")" } if (-not $this.'.Fill') { $this | Add-Member -MemberType NoteProperty -Name '.Fill' -Value $Fill -Force } else { $this.'.Fill' = $Fill } |