From 29427aa46819561111c1ce31014680f32c0dcab3 Mon Sep 17 00:00:00 2001
From: Mike Wey
Date: Mon, 28 Feb 2011 23:48:18 +0100
Subject: Add versions for different Quantum depths

---
 dmagick/c/quantum.d | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

(limited to 'dmagick/c/quantum.d')

diff --git a/dmagick/c/quantum.d b/dmagick/c/quantum.d
index 4186c11..2a48c0a 100644
--- a/dmagick/c/quantum.d
+++ b/dmagick/c/quantum.d
@@ -68,14 +68,21 @@ extern(C)
 	{
 		if (value <= 0.0)
 			return(cast(Quantum) 0);
-		if (value >= cast(MagickRealType) 65535UL)
-			return(cast(Quantum) 65535UL);
+		if (value >= cast(MagickRealType) QuantumRange)
+			return(cast(Quantum) QuantumRange);
 		return(cast(Quantum) (value+0.5));
 	}
 
 	static pure nothrow ubyte ScaleQuantumToChar(const Quantum quantum)
 	{
-		return(cast(ubyte) (((quantum+128UL)-((quantum+128UL) >> 8)) >> 8));
+		static if ( MagickQuantumDepth == 8 )
+			return quantum;
+		else static if ( MagickQuantumDepth == 16 )
+			return cast(ubyte) (((quantum+128UL)-((quantum+128UL) >> 8)) >> 8);
+		else static if ( MagickQuantumDepth == 32 )
+			return cast(ubyte) (quantum+8421504UL/16843009UL );
+		else
+			return cast(ubyte) (quantum/72340172838076673.0+0.5);
 	}
 
 	static pure nothrow Quantum ScaleCharToQuantum(ubyte value)
-- 
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