Scripts/plasma-field.ps1
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$esc = [char]27 $reset = "$esc[0m" $ansiPattern = "$([char]27)\[[0-9;]*m" function Write-AlignedLine { param([string]$text, [int]$width) $visible = ([regex]::Replace($text, $ansiPattern, '')).Length if ($visible -lt $width) { $text += ' ' * ($width - $visible) } Write-Host ($text + $reset) } function Convert-HsvToRgb { param( [double]$Hue, [double]$Saturation, [double]$Value ) $h = ($Hue % 1) * 6 $sector = [math]::Floor($h) $fraction = $h - $sector $p = $Value * (1 - $Saturation) $q = $Value * (1 - $fraction * $Saturation) $t = $Value * (1 - (1 - $fraction) * $Saturation) switch ($sector) { 0 { $r = $Value; $g = $t; $b = $p } 1 { $r = $q; $g = $Value; $b = $p } 2 { $r = $p; $g = $Value; $b = $t } 3 { $r = $p; $g = $q; $b = $Value } 4 { $r = $t; $g = $p; $b = $Value } default { $r = $Value; $g = $p; $b = $q } } return @([int][math]::Round($r * 255), [int][math]::Round($g * 255), [int][math]::Round($b * 255)) } $rows = 24 $cols = 60 $targetWidth = 120 Write-Host for ($y = 0; $y -lt $rows; $y++) { $sb = [System.Text.StringBuilder]::new() for ($x = 0; $x -lt $cols; $x++) { $nx = $x / $cols $ny = $y / $rows $turb1 = [math]::Sin($nx * 8 + $ny * 6 + [math]::Sin($nx * 16) * 0.5) $turb2 = [math]::Cos($nx * 12 - $ny * 9 + [math]::Cos($ny * 18) * 0.3) $turb3 = [math]::Sin($nx * 20 + $ny * 15) * [math]::Cos($nx * 10 - $ny * 12) $plasma = ($turb1 + $turb2 + $turb3) / 3 $flow = [math]::Abs([math]::Sin($nx * 25 + $ny * 20 + $plasma * 2)) $hue = 0.05 + 0.15 * [math]::Sin($plasma * 3 + $flow) # Red to orange $sat = 0.8 + 0.2 * $flow $val = 0.4 + 0.6 * [math]::Abs($plasma) $rgb = Convert-HsvToRgb -Hue $hue -Saturation ([math]::Min([math]::Max($sat, 0.0), 1.0)) -Value ([math]::Min([math]::Max($val, 0.0), 1.0)) $symbols = @(' ', '░', '▒', '▓', '█', '▚', '▞', '▙') $symbolIndex = [math]::Floor([math]::Abs($plasma) * $symbols.Length) % $symbols.Length $symbol = $symbols[$symbolIndex] $null = $sb.Append("$esc[38;2;$($rgb[0]);$($rgb[1]);$($rgb[2])" + "m$symbol") } Write-AlignedLine ($sb.ToString()) $targetWidth } Write-Host $reset |