Legal notices updated

Rename contrib -> third-party intendes to express the origin and purpose
of that part of the code better. I plan to readd contrib/ again but with
more in-project things like bash-completions, dev workflow scripts etc.

1 files changed, 57 insertions, 0 deletions

diff --git a/third-party/Opcode/Ice/IceSegment.cpp b/third-party/Opcode/Ice/IceSegment.cpp
new file mode 100644
index 0000000..b45d04b
--- /dev/null
+++ b/third-party/Opcode/Ice/IceSegment.cpp
@@ -0,0 +1,57 @@
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+/**
+ *	Contains code for segments.
+ *	\file		IceSegment.cpp
+ *	\author		Pierre Terdiman
+ *	\date		April, 4, 2000
+ */
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+/**
+ *	IceSegment class.
+ *	A segment is defined by S(t) = mP0 * (1 - t) + mP1 * t, with 0 <= t <= 1
+ *	Alternatively, a segment is S(t) = Origin + t * Direction for 0 <= t <= 1.
+ *	Direction is not necessarily unit length. The end points are Origin = mP0 and Origin + Direction = mP1.
+ *
+ *	\class		IceSegment
+ *	\author		Pierre Terdiman
+ *	\version	1.0
+ */
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+// Precompiled Header
+#include "StdAfx.h"
+
+using namespace IceMaths;
+
+float IceSegment::SquareDistance(const IcePoint& Point, float* t)	const
+{
+	IcePoint Diff = Point - mP0;
+	IcePoint Dir = mP1 - mP0;
+	float fT = Diff | Dir;
+
+	if(fT<=0.0f)
+	{
+		fT = 0.0f;
+	}
+	else
+	{
+		float SqrLen= Dir.SquareMagnitude();
+		if(fT>=SqrLen)
+		{
+			fT = 1.0f;
+			Diff -= Dir;
+		}
+		else
+		{
+			fT /= SqrLen;
+			Diff -= fT*Dir;
+		}
+	}
+
+	if(t)	*t = fT;
+
+	return Diff.SquareMagnitude();
+}