1 files changed, 89 insertions, 0 deletions
diff --git a/gpr/source/lib/dng_sdk/dng_xy_coord.cpp b/gpr/source/lib/dng_sdk/dng_xy_coord.cpp
new file mode 100644
index 0000000..c4fe8f0
--- /dev/null
+++ b/gpr/source/lib/dng_sdk/dng_xy_coord.cpp
@@ -0,0 +1,89 @@
+/*****************************************************************************/
+// Copyright 2006-2007 Adobe Systems Incorporated
+// All Rights Reserved.
+//
+// NOTICE:  Adobe permits you to use, modify, and distribute this file in
+// accordance with the terms of the Adobe license agreement accompanying it.
+/*****************************************************************************/
+
+/* $Id: //mondo/dng_sdk_1_4/dng_sdk/source/dng_xy_coord.cpp#1 $ */ 
+/* $DateTime: 2012/05/30 13:28:51 $ */
+/* $Change: 832332 $ */
+/* $Author: tknoll $ */
+
+/*****************************************************************************/
+
+#include "dng_xy_coord.h"
+
+#include "dng_matrix.h"
+#include "dng_utils.h"
+
+/******************************************************************************/
+
+dng_xy_coord XYZtoXY (const dng_vector_3 &coord)
+	{
+	
+	real64 X = coord [0];
+	real64 Y = coord [1];
+	real64 Z = coord [2];
+	
+	real64 total = X + Y + Z;
+	
+	if (total > 0.0)
+		{
+		
+		return dng_xy_coord (X / total,
+						     Y / total);
+						
+		}
+		
+	return D50_xy_coord ();
+		
+	}
+
+/*****************************************************************************/
+
+dng_vector_3 XYtoXYZ (const dng_xy_coord &coord)
+	{
+	
+	dng_xy_coord temp = coord;
+	
+	// Restrict xy coord to someplace inside the range of real xy coordinates.
+	// This prevents math from doing strange things when users specify
+	// extreme temperature/tint coordinates.
+	
+	temp.x = Pin_real64 (0.000001, temp.x, 0.999999);
+	temp.y = Pin_real64 (0.000001, temp.y, 0.999999);
+	
+	if (temp.x + temp.y > 0.999999)
+		{
+		real64 scale = 0.999999 / (temp.x + temp.y);
+		temp.x *= scale;
+		temp.y *= scale;
+		}
+	
+	return dng_vector_3 (temp.x / temp.y,
+					     1.0,
+					     (1.0 - temp.x - temp.y) / temp.y);
+	
+	}
+
+/*****************************************************************************/
+
+dng_xy_coord PCStoXY ()
+	{
+	
+	return D50_xy_coord ();
+	
+	}
+
+/*****************************************************************************/
+
+dng_vector_3 PCStoXYZ ()
+	{
+	
+	return XYtoXYZ (PCStoXY ());
+	
+	}
+
+/*****************************************************************************/