48 lines
1.9 KiB
Text
48 lines
1.9 KiB
Text
$If HSB = UNDEFINED Then
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$Let HSB = DEFINED
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Function hsb~& (huein As Integer, satin As Integer, brightin As Integer)
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Dim hue, sat, bright
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Dim redout, greenout, blueout
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Dim hueprimary, huesecondary
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Dim satprimary, satsecondary, sattertiary
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hue = huein Mod 360
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If hue < 0 Then hue = hue + 360
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sat = satin / 100
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bright = brightin / 100
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If sat > 1 Then s = 1
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If bright > 1 Then b = 1
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If bright <= 0 Then hsb32 = _RGB(0, 0, 0): Exit Function
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If sat <= 0 Then hsb32 = _RGB(b * 255, b * 255, b * 255): Exit Function
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If (hue >= 0) And (hue < 120) Then
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hueprimary = 1 - (hue / 120)
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huesecondary = hue / 120
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satprimary = (1 - hueprimary) * (1 - sat)
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satsecondary = (1 - huesecondary) * (1 - sat)
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sattertiary = 1 - sat
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redout = (bright * 255) * (hueprimary + satprimary)
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greenout = (bright * 255) * (huesecondary + satsecondary)
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blueout = (bright * 255) * sattertiary
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ElseIf (hue >= 120) And (hue < 240) Then
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hueprimary = 1 - ((hue - 120) / 120)
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huesecondary = (hue - 120) / 120
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satprimary = (1 - hueprimary) * (1 - sat)
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satsecondary = (1 - huesecondary) * (1 - sat)
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sattertiary = 1 - sat
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redout = (bright * 255) * sattertiary
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greenout = (bright * 255) * (hueprimary + satprimary)
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blueout = (bright * 255) * (huesecondary + satsecondary)
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ElseIf (hue >= 240) And (hue <= 360) Then
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hueprimary = 1 - ((hue - 240) / 120)
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huesecondary = (hue - 240) / 120
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satprimary = (1 - hueprimary) * (1 - sat)
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satsecondary = (1 - huesecondary) * (1 - sat)
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sattertiary = 1 - sat
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redout = (bright * 255) * (huesecondary + satsecondary)
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greenout = (bright * 255) * sattertiary
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blueout = (bright * 255) * (hueprimary + satprimary)
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End If
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hsb = _RGB(redout, greenout, blueout)
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End Function
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$End If
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