Scripts/rainbow-spiral.ps1
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# Rainbow Spiral - Static spiral pattern with rainbow colors $esc = [char]27 $width = 120 $height = 30 $centerX = $width / 2 $centerY = $height / 2 function HSVtoRGB($h, $s, $v) { $h = $h % 1 $i = [math]::Floor($h * 6) $f = $h * 6 - $i $p = $v * (1 - $s) $q = $v * (1 - $f * $s) $t = $v * (1 - (1 - $f) * $s) switch ($i % 6) { 0 { $r = $v; $g = $t; $b = $p } 1 { $r = $q; $g = $v; $b = $p } 2 { $r = $p; $g = $v; $b = $t } 3 { $r = $p; $g = $q; $b = $v } 4 { $r = $t; $g = $p; $b = $v } default { $r = $v; $g = $p; $b = $q } } return @([int]($r * 255), [int]($g * 255), [int]($b * 255)) } # Static frame (no animation loop) $frame = 90 Write-Host "" for ($y = 0; $y -lt $height; $y++) { for ($x = 0; $x -lt $width; $x++) { $dx = $x - $centerX $dy = $y - $centerY $distance = [math]::Sqrt($dx * $dx + $dy * $dy) $angle = [math]::Atan2($dy, $dx) # Create spiral pattern $spiral = $angle + $distance * 0.1 + $frame * 0.05 $hue = ($spiral / (2 * [math]::PI)) % 1 # Add some variation $wave = [math]::Sin($distance * 0.2 + $frame * 0.1) * 0.1 $hue = ($hue + $wave) % 1 # Vary saturation and brightness $saturation = 0.8 + 0.2 * [math]::Sin($distance * 0.05) $value = 0.4 + 0.6 * [math]::Sin($angle * 2 + $frame * 0.02) $rgb = HSVtoRGB -h $hue -s $saturation -v $value Write-Host "$esc[38;2;$($rgb[0]);$($rgb[1]);$($rgb[2])m█$esc[0m" -NoNewline } Write-Host "" } Write-Host "" |