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CryCommon/Range.h

@@ -0,0 +1,104 @@
+////////////////////////////////////////////////////////////////////////////
+//
+//  Crytek Engine Source File.
+//  Copyright (C), Crytek Studios, 2002.
+// -------------------------------------------------------------------------
+//  File name:   range.h
+//  Version:     v1.00
+//  Created:     25/4/2002 by Timur.
+//  Compilers:   Visual Studio.NET
+//  Description: Time TRange class.
+// -------------------------------------------------------------------------
+//  History:
+//
+////////////////////////////////////////////////////////////////////////////
+
+#ifndef __range_h__
+#define __range_h__
+
+#if _MSC_VER > 1000
+#pragma once
+#endif
+
+#ifndef MIN
+#define MIN(a,b) ((a)<(b)?(a):(b))
+#endif
+
+#ifndef MAX
+#define MAX(a,b) ((a)>(b)?(a):(b))
+#endif
+
+/*!
+		Class TRange, can represent anything that is range between two values, mostly used for time ranges.
+ */
+template <class T>
+class	TRange
+{
+public:
+	T start;
+	T end;
+
+	TRange()	{ start = 0; end = 0; };
+	TRange( const TRange &r ) { start = r.start; end = r.end; };
+	TRange( T s,T e ) { start = s; end = e; };
+
+	void Set( T s,T e ) { start = s; end = e; };
+	void Clear() { start = 0; end = 0; };
+
+	//! Get length of range.
+	T	Length() const { return end - start; };
+	//! Check if range is empty.
+	bool IsEmpty()	const { return (start == 0 && end == 0); }
+
+	//! Check if value is inside range.
+	bool IsInside( T val ) { return val >= start && val <= end; };
+
+	void ClipValue( T &val )
+	{
+		if (val < start) val = start;
+		if (val > end) val = end;
+	}
+
+	//! Compare two ranges.
+	bool	operator == ( const TRange &r ) const {
+		return start == r.start && end == r.end;
+	}
+	//! Assign operator.
+	TRange&	operator =( const TRange &r ) {
+		start = r.start;
+		end = r.end;
+		return *this;
+	}
+	//! Interect two ranges.
+	TRange	operator & ( const TRange &r )	{
+		return TRange( MAX(start,r.start),MIN(end,r.end) );
+	}
+	TRange&	operator &= ( const TRange &r )	{
+		return (*this = (*this & r));
+	}
+	//! Concatent two ranges.
+	TRange	operator | ( const TRange &r )	{
+		return TRange( MIN(start,r.start),MAX(end,r.end) );
+	}
+	TRange&	operator |= ( const TRange &r )	{
+		return (*this = (*this | r));
+	}
+	//! Add new value to range.
+	TRange	operator + ( T v )	{
+		T s = start, e = end;
+		if (v < start) s = v;
+		if (v > end) e = v;
+		return TRange( s,e );
+	}
+	//! Add new value to range.
+	TRange&	operator += ( T v )	{
+		if (v < start) start = v;
+		if (v > end) end = v;
+		return *this;
+	}
+};
+
+//! CRange if just TRange for floats..
+typedef TRange<float> Range;
+
+#endif // __range_h__