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feat: Zoom XY Shader ( Fixes #199 )
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‎Commands/Shaders/Get-OBSZoomXYShader.ps1

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function Get-OBSZoomXYShader {
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[Alias('Set-OBSZoomXYShader','Add-OBSZoomXYShader')]
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param(
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# Set the center_x_percent of OBSZoomXYShader
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[Alias('center_x_percent')]
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[ComponentModel.DefaultBindingProperty('center_x_percent')]
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[Int32]
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$CenterXPercent,
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# Set the center_y_percent of OBSZoomXYShader
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[Alias('center_y_percent')]
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[ComponentModel.DefaultBindingProperty('center_y_percent')]
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[Int32]
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$CenterYPercent,
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# Set the x_power of OBSZoomXYShader
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[Alias('x_power')]
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[ComponentModel.DefaultBindingProperty('x_power')]
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[Single]
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$XPower,
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# Set the y_power of OBSZoomXYShader
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[Alias('y_power')]
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[ComponentModel.DefaultBindingProperty('y_power')]
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[Single]
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$YPower,
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# The name of the source. This must be provided when adding an item for the first time
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[Parameter(ValueFromPipelineByPropertyName)]
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[Alias('SceneItemName')]
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[String]
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$SourceName,
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# The name of the filter. If this is not provided, this will default to the shader name.
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[Parameter(ValueFromPipelineByPropertyName)]
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[String]
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$FilterName,
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# The inline value of the shader. This will normally be provided as a default parameter, based off of the name.
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[Alias('ShaderContent')]
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[String]
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$ShaderText,
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# If set, will force the recreation of a shader that already exists
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[Management.Automation.SwitchParameter]
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$Force,
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# If set, will pass thru the commands that would be sent to OBS (these can be sent at any time with Send-OBS)
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[Management.Automation.SwitchParameter]
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$PassThru,
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# If set, will not wait for a response from OBS (this will be faster, but will not return anything)
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[Management.Automation.SwitchParameter]
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$NoResponse,
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# If set, use the shader elapsed time, instead of the OBS system elapsed time
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[ComponentModel.DefaultBindingProperty('use_shader_elapsed_time')]
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[Management.Automation.SwitchParameter]
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$UseShaderTime
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)
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process {
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$shaderName = 'Zoom_XY'
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$ShaderNoun = 'OBSZoomXYShader'
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if (-not $psBoundParameters['ShaderText']) {
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$psBoundParameters['ShaderText'] = $ShaderText = '
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// Zoom XY Shader
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// A simple twist on the Zoom Shader in https://github.com/exeldro/obs-shaderfilter/
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// The allow for an independent Horizontal and Vertical Zoom.
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uniform int center_x_percent<
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string label = "center x percent";
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string widget_type = "slider";
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int minimum = 0;
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int maximum = 100;
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int step = 1;
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> = 50;
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uniform int center_y_percent<
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string label = "center y percent";
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string widget_type = "slider";
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int minimum = 0;
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int maximum = 100;
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int step = 1;
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> = 50;
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uniform float x_power<
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string label = "x power";
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string widget_type = "slider";
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float minimum = 0;
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float maximum = 20.0;
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float step = 0.001;
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> = 1;
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uniform float y_power<
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string label = "y power";
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string widget_type = "slider";
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float minimum = 0;
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float maximum = 20.0;
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float step = 0.001;
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> = 1;
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float4 mainImage(VertData v_in) : TARGET
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{
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float2 center_pos = float2(center_x_percent * .01, center_y_percent * .01);
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float2 uv = v_in.uv;
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uv.x = (v_in.uv.x - center_pos.x) * x_power + center_pos.x;
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uv.y = (v_in.uv.y - center_pos.y) * y_power + center_pos.y;
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return image.Sample(textureSampler, uv);
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}
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'
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}
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$MyVerb, $myNoun = $MyInvocation.InvocationName -split '-',2
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if (-not $myNoun) {
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$myNoun = $myVerb
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$myVerb = 'Get'
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}
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switch -regex ($myVerb) {
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Get {
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$FilterNamePattern = "(?>$(
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if ($FilterName) {
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[Regex]::Escape($FilterName)
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}
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else {
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[Regex]::Escape($ShaderNoun -replace '^OBS' -replace 'Shader$'),[Regex]::Escape($shaderName) -join '|'
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}
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))"
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if ($SourceName) {
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Get-OBSInput |
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Where-Object InputName -eq $SourceName |
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Get-OBSSourceFilterList |
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Where-Object FilterName -Match $FilterNamePattern
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} else {
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$obs.Inputs |
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Get-OBSSourceFilterList |
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Where-Object FilterName -Match $FilterNamePattern
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}
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}
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'Remove' {
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if ($SourceName) {
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Get-OBSInput |
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Where-Object InputName -eq $SourceName |
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Get-OBSSourceFilterList |
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Where-Object FilterName -Match $FilterNamePattern |
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Remove-OBSSourceFilter
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}
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}
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'(?>Add|Set)' {
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$ShaderSettings = [Ordered]@{}
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:nextParameter foreach ($parameterMetadata in $MyInvocation.MyCommand.Parameters[@($psBoundParameters.Keys)]) {
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foreach ($parameterAttribute in $parameterMetadata.Attributes) {
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if ($parameterAttribute -isnot [ComponentModel.DefaultBindingPropertyAttribute]) { continue }
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$ShaderSettings[$parameterAttribute.Name] = $PSBoundParameters[$parameterMetadata.Name]
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if ($ShaderSettings[$parameterAttribute.Name] -is [switch]) {
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$ShaderSettings[$parameterAttribute.Name] = $ShaderSettings[$parameterAttribute.Name] -as [bool]
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}
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continue nextParameter
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}
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}
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if (-not $PSBoundParameters['FilterName']) {
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$filterName = $PSBoundParameters['FilterName'] = $shaderName
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}
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$ShaderFilterSplat = [Ordered]@{
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ShaderSetting = $ShaderSettings
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FilterName = $FilterName
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SourceName = $SourceName
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}
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foreach ($CarryOnParameter in "PassThru", "NoResponse","Force") {
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if ($PSBoundParameters.ContainsKey($CarryOnParameter)) {
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$ShaderFilterSplat[$CarryOnParameter] = $PSBoundParameters[$CarryOnParameter]
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}
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}
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if (-not $script:CachedShaderFilesFromCommand) {
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$script:CachedShaderFilesFromCommand = @{}
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}
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if ($Home -and -not $script:CachedShaderFilesFromCommand[$shaderName]) {
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$MyObsPowerShellPath = Join-Path $home ".obs-powershell"
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$ThisShaderPath = Join-Path $MyObsPowerShellPath "$shaderName.shader"
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$shaderText | Set-Content -LiteralPath $ThisShaderPath
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$script:CachedShaderFilesFromCommand[$shaderName] = Get-Item -LiteralPath $ThisShaderPath
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}
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if ($script:CachedShaderFilesFromCommand[$shaderName]) {
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$ShaderFilterSplat.ShaderFile = $script:CachedShaderFilesFromCommand[$shaderName].FullName
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} else {
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$ShaderFilterSplat.ShaderText = $shaderText
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}
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if ($myVerb -eq 'Add') {
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Add-OBSShaderFilter @ShaderFilterSplat
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} else {
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Set-OBSShaderFilter @ShaderFilterSplat
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}
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}
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}
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}
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}
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