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+/*************************************************************************
+ *
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * Copyright 2000, 2010 Oracle and/or its affiliates.
+ *
+ * OpenOffice.org - a multi-platform office productivity suite
+ *
+ * This file is part of OpenOffice.org.
+ *
+ * OpenOffice.org is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License version 3
+ * only, as published by the Free Software Foundation.
+ *
+ * OpenOffice.org is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Lesser General Public License version 3 for more details
+ * (a copy is included in the LICENSE file that accompanied this code).
+ *
+ * You should have received a copy of the GNU Lesser General Public License
+ * version 3 along with OpenOffice.org. If not, see
+ * <http://www.openoffice.org/license.html>
+ * for a copy of the LGPLv3 License.
+ *
+ ************************************************************************/
+
+#ifndef BASEGFX_BEZIERCLIP_HXX
+#define BASEGFX_BEZIERCLIP_HXX
+
+#include <vector>
+
+struct Point2D
+{
+ typedef double value_type;
+ Point2D( double _x, double _y ) : x(_x), y(_y) {}
+ Point2D() : x(), y() {}
+ double x;
+ double y;
+};
+
+struct Bezier
+{
+ Point2D p0;
+ Point2D p1;
+ Point2D p2;
+ Point2D p3;
+
+ Point2D& operator[]( int i ) { return reinterpret_cast<Point2D*>(this)[i]; }
+ const Point2D& operator[]( int i ) const { return reinterpret_cast<const Point2D*>(this)[i]; }
+};
+
+struct FatLine
+{
+ // line L through p1 and p4 in normalized implicit form
+ double a;
+ double b;
+ double c;
+
+ // the upper and lower distance from this line
+ double dMin;
+ double dMax;
+};
+
+template <typename DataType> DataType calcLineDistance( const DataType& a,
+ const DataType& b,
+ const DataType& c,
+ const DataType& x,
+ const DataType& y )
+{
+ return a*x + b*y + c;
+}
+
+typedef ::std::vector< Point2D > Polygon2D;
+
+/* little abs template */
+template <typename NumType> NumType absval( NumType x )
+{
+ return x<0 ? -x : x;
+}
+
+Polygon2D convexHull( const Polygon2D& rPoly );
+
+// TODO: find proper epsilon here (try ::std::numeric_limits<NumType>::epsilon()?)!
+#define DBL_EPSILON 1.0e-100
+
+/* little approximate comparions */
+template <typename NumType> bool tolZero( NumType n ) { return fabs(n) < DBL_EPSILON; }
+template <typename NumType> bool tolEqual( NumType n1, NumType n2 ) { return tolZero(n1-n2); }
+template <typename NumType> bool tolLessEqual( NumType n1, NumType n2 ) { return tolEqual(n1,n2) || n1<n2; }
+template <typename NumType> bool tolGreaterEqual( NumType n1, NumType n2 ) { return tolEqual(n1,n2) || n1>n2; }
+
+#endif /* BASEGFX_BEZIERCLIP_HXX */