1 files changed, 113 insertions, 0 deletions
diff --git a/tool_src/BspLib/Vector2.h b/tool_src/BspLib/Vector2.h
new file mode 100644
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+++ b/tool_src/BspLib/Vector2.h
@@ -0,0 +1,113 @@
+//-----------------------------------------------------------------------------
+//	BSPLIB HEADER: Vector2.h
+//
+//  Copyright (c) 1997 by Markus Hadwiger
+//  All Rights Reserved.
+//-----------------------------------------------------------------------------
+
+#ifndef _VECTOR2_H_
+#define _VECTOR2_H_
+
+// bsplib header files
+#include "BspLibDefs.h"
+#include "Vertex2.h"
+
+
+BSPLIB_NAMESPACE_BEGIN
+
+
+// vector times scalar (post-multiply) ----------------------------------------
+inline Vector2 operator *( const Vector2 v1, double t )
+{
+	return Vector2( v1.X * t, v1.Y * t, 1.0 );
+}
+
+// scalar times vector (pre-multiply) -----------------------------------------
+inline Vector2 operator *( double t, const Vector2 v1 )
+{
+	return Vector2( v1.X * t, v1.Y * t, 1.0 );
+}
+
+// operator '+=' does memberwise addition for (X,Y) ---------------------------
+inline Vector2& Vector2::operator +=( const Vector2 v )
+{
+	X += v.X;
+	Y += v.Y;
+	return *this;
+}
+
+// operator '-=' does memberwise subtraction for (X,Y) ------------------------
+inline Vector2& Vector2::operator -=( const Vector2 v )
+{
+	X -= v.X;
+	Y -= v.Y;
+	return *this;
+}
+
+// operator '*=' does multiplication with a scalar ----------------------------
+inline Vector2& Vector2::operator *=( double t )
+{
+	X *= t;
+	Y *= t;
+	return *this;
+}
+
+// normalize vector (homogeneous coordinate will be set to one) ---------------
+inline int Vector2::Normalize()
+{
+	if ( IsNullVector() )
+		return FALSE;
+
+	double oonorm = 1 / VecLength();
+	X = X * oonorm;
+	Y = Y * oonorm;
+	W = 1.0;
+	return TRUE;
+}
+
+// homogenize vector (divide by homogeneous coordinate) -----------------------
+inline int Vector2::Homogenize()
+{
+	if ( fabs( W ) < EPS_DENOM_ZERO )
+		return FALSE;
+
+	double oow = 1 / W;
+	X = X * oow;
+	Y = Y * oow;
+	W = 1.0;
+	return TRUE;
+}
+
+// check if vector has length zero (employs an epsilon area) ------------------
+inline int Vector2::IsNullVector() const
+{
+	// the epsilon area is employed componentwise, not for the length itself!
+	return ( ( fabs( X ) < EPS_COMP_ZERO ) && ( fabs( Y ) < EPS_COMP_ZERO ) );
+}
+
+// calculate length of two dimensional vector ---------------------------------
+inline hprec_t Vector2::VecLength() const
+{
+	return sqrt( X * X + Y * Y );
+}
+
+// calculate floating point scalar-product ------------------------------------
+inline hprec_t Vector2::DotProduct( const Vector2& vect ) const
+{
+	return ( vect.X * X ) + ( vect.Y * Y );
+}
+
+// calc vector directed from second vertex to first vertex --------------------
+inline void Vector2::CreateDirVec( const Vertex2& vertex1, const Vertex2& vertex2 )
+{
+	X = vertex2.X - vertex1.X;
+	Y = vertex2.Y - vertex1.Y;
+	W = 1.0;
+}
+
+
+BSPLIB_NAMESPACE_END
+
+
+#endif // _VECTOR2_H_
+