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+/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
+/*
+ * This file is part of the LibreOffice project.
+ *
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ *
+ * This file incorporates work covered by the following license notice:
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed
+ * with this work for additional information regarding copyright
+ * ownership. The ASF licenses this file to you under the Apache
+ * License, Version 2.0 (the "License"); you may not use this file
+ * except in compliance with the License. You may obtain a copy of
+ * the License at http://www.apache.org/licenses/LICENSE-2.0 .
+ */
+
+#pragma once
+
+#include <ostream>
+#include <vector>
+
+#include <basegfx/basegfxdllapi.h>
+#include <basegfx/vector/b2dvector.hxx>
+#include <basegfx/point/b2dpoint.hxx>
+#include <basegfx/tuple/b2dtuple.hxx>
+#include <basegfx/range/basicrange.hxx>
+#include <basegfx/range/Range2D.hxx>
+
+namespace basegfx
+{
+ class B2IRange;
+ class B2DHomMatrix;
+
+ /** A two-dimensional interval over doubles
+
+ This is a set of real numbers, bounded by a lower and an upper
+ pair. All inbetween values are included in the set (see also
+ http://en.wikipedia.org/wiki/Interval_%28mathematics%29).
+
+ The set is closed, i.e. the upper and the lower bound are
+ included (if you're used to the notation - we're talking about
+ [a,b] here, compared to half-open [a,b) or open intervals
+ (a,b)).
+
+ That means, isInside(val) will return true also for values of
+ val=a or val=b.
+
+ @see B1DRange
+ */
+ class SAL_WARN_UNUSED B2DRange : public Range2D<double, DoubleTraits>
+ {
+ public:
+ B2DRange()
+ : Range2D()
+ {}
+
+ /// Create degenerate interval consisting of a single point
+ explicit B2DRange(const Tuple2D<ValueType>& rTuple)
+ : Range2D(rTuple)
+ {
+ }
+
+ /// Create proper interval between the two given points
+ B2DRange(const Tuple2D<ValueType>& rTuple1,
+ const Tuple2D<ValueType>& rTuple2)
+ : Range2D(rTuple1, rTuple2)
+ {
+ }
+
+ B2DRange(ValueType x1, ValueType y1, ValueType x2, ValueType y2)
+ : Range2D(x1, y1, x2, y2)
+ {}
+
+ BASEGFX_DLLPUBLIC explicit B2DRange(const B2IRange& rRange);
+
+ /// get lower bound of the set. returns arbitrary values for empty sets.
+ B2DPoint getMinimum() const
+ {
+ return B2DPoint(
+ maRangeX.getMinimum(),
+ maRangeY.getMinimum()
+ );
+ }
+
+ /// get upper bound of the set. returns arbitrary values for empty sets.
+ B2DPoint getMaximum() const
+ {
+ return B2DPoint(
+ maRangeX.getMaximum(),
+ maRangeY.getMaximum()
+ );
+ }
+
+ /// return difference between upper and lower point. returns (0,0) for empty sets.
+ B2DVector getRange() const
+ {
+ return B2DVector(
+ maRangeX.getRange(),
+ maRangeY.getRange()
+ );
+ }
+
+ /// return center point of set. returns (0,0) for empty sets.
+ B2DPoint getCenter() const
+ {
+ return B2DPoint(
+ maRangeX.getCenter(),
+ maRangeY.getCenter()
+ );
+ }
+
+ /** Transform Range by given transformation matrix. */
+ BASEGFX_DLLPUBLIC void transform(const B2DHomMatrix& rMatrix);
+
+ /** Transform Range by given transformation matrix.
+
+ This operation transforms the Range by transforming all four possible
+ extrema points (corners) of the given range and building a new one.
+ This means that the range will grow evtl. when a shear and/or rotation
+ is part of the transformation.
+ */
+ BASEGFX_DLLPUBLIC B2DRange& operator*=( const ::basegfx::B2DHomMatrix& rMat );
+
+ /** Get a range filled with (0.0, 0.0, 1.0, 1.0) */
+ static const B2DRange& getUnitB2DRange();
+ };
+
+ /** Transform B2DRange by given transformation matrix (see operator*=())
+ */
+ B2DRange operator*( const B2DHomMatrix& rMat, const B2DRange& rB2DRange );
+
+ /** Round double to nearest integer for 2D range
+
+ @return the nearest integer for this range
+ */
+ BASEGFX_DLLPUBLIC B2IRange fround(const B2DRange& rRange);
+
+ /** Compute the set difference of the two given ranges
+
+ This method calculates the symmetric difference (aka XOR)
+ between the two given ranges, and returning the resulting
+ ranges. Thus, the result will contain all areas where one, but
+ not both ranges lie.
+
+ @param o_rResult
+ Result vector. The up to four difference ranges are returned
+ within this vector
+
+ @param rFirst
+ The first range
+
+ @param rSecond
+ The second range
+
+ @return the input vector
+ */
+ BASEGFX_DLLPUBLIC std::vector<B2DRange>& computeSetDifference(
+ std::vector<B2DRange>& o_rResult,
+ const B2DRange& rFirst,
+ const B2DRange& rSecond);
+
+ /** Write to char stream */
+ template<typename charT, typename traits>
+ inline std::basic_ostream<charT, traits>& operator<<(
+ std::basic_ostream<charT, traits>& stream, const B2DRange& range)
+ {
+ return stream << range.getWidth() << "x" << range.getHeight() << "@" << range.getMinimum();
+ }
+
+} // end of namespace basegfx
+
+/* vim:set shiftwidth=4 softtabstop=4 expandtab: */