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| -rw-r--r-- | include/basegfx/polygon/b3dpolygontools.hxx | 129 |
1 files changed, 129 insertions, 0 deletions
diff --git a/include/basegfx/polygon/b3dpolygontools.hxx b/include/basegfx/polygon/b3dpolygontools.hxx new file mode 100644 index 000000000..2bdddbc33 --- /dev/null +++ b/include/basegfx/polygon/b3dpolygontools.hxx @@ -0,0 +1,129 @@ +/* -*- 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 <vector> +#include <functional> + +#include <basegfx/point/b3dpoint.hxx> +#include <basegfx/vector/b3dvector.hxx> +#include <basegfx/basegfxdllapi.h> + +namespace basegfx +{ + class B3DPolyPolygon; + class B3DPolygon; + class B3DRange; +} + +namespace basegfx::utils +{ + // B3DPolygon tools + + /** Check if given polygon is closed. This is kind of a + 'classic' method to support old polygon definitions. + Those old polygon definitions define the closed state + of the polygon using identical start and endpoints. This + method corrects this (removes double start/end points) + and sets the Closed()-state of the polygon correctly. + */ + BASEGFX_DLLPUBLIC void checkClosed(B3DPolygon& rCandidate); + + // Get successor and predecessor indices. Returning the same index means there + // is none. Same for successor. + BASEGFX_DLLPUBLIC sal_uInt32 getIndexOfSuccessor(sal_uInt32 nIndex, const B3DPolygon& rCandidate); + + // get size of polygon. Control vectors are included in that ranges. + BASEGFX_DLLPUBLIC B3DRange getRange(const B3DPolygon& rCandidate); + + // get length of polygon + BASEGFX_DLLPUBLIC double getLength(const B3DPolygon& rCandidate); + + /** Apply given LineDashing to given polygon + + For a description see applyLineDashing in b2dpolygontoos.hxx + Also 2nd version with callbacks, see comments in 2D version + */ + void applyLineDashing( + const B3DPolygon& rCandidate, + const std::vector<double>& rDotDashArray, + std::function<void(const basegfx::B3DPolygon& rSnippet)> aLineTargetCallback, + double fDotDashLength = 0.0); + BASEGFX_DLLPUBLIC void applyLineDashing( + const B3DPolygon& rCandidate, + const ::std::vector<double>& rDotDashArray, + B3DPolyPolygon* pLineTarget, + double fDotDashLength = 0.0); + + /** Create/replace normals for given 3d geometry with default normals from given center to outside. + rCandidate: the 3d geometry to change + rCenter: the center of the 3d geometry + */ + B3DPolygon applyDefaultNormalsSphere( const B3DPolygon& rCandidate, const B3DPoint& rCenter); + + /** invert normals for given 3d geometry. + */ + BASEGFX_DLLPUBLIC B3DPolygon invertNormals( const B3DPolygon& rCandidate); + + /** Create/replace texture coordinates for given 3d geometry with parallel projected one + rRange: the full range of the 3d geometry + If bChangeX, x texture coordinate will be recalculated. + If bChangeY, y texture coordinate will be recalculated. + */ + B3DPolygon applyDefaultTextureCoordinatesParallel( const B3DPolygon& rCandidate, const B3DRange& rRange, bool bChangeX, bool bChangeY); + + /** Create/replace texture coordinates for given 3d geometry with spherical one + rCenter: the centre of the used 3d geometry + If bChangeX, x texture coordinate will be recalculated. + If bChangeY, y texture coordinate will be recalculated. + */ + B3DPolygon applyDefaultTextureCoordinatesSphere( const B3DPolygon& rCandidate, const B3DPoint& rCenter, bool bChangeX, bool bChangeY); + + // isInside tests for B3DPoint. On border is not inside as long as not true is given in bWithBorder flag. + BASEGFX_DLLPUBLIC bool isInside(const B3DPolygon& rCandidate, const B3DPoint& rPoint, bool bWithBorder); + + // calculates if given point is on given line, taking care of the numerical epsilon + BASEGFX_DLLPUBLIC bool isPointOnLine(const B3DPoint& rStart, const B3DPoint& rEnd, const B3DPoint& rCandidate, bool bWithPoints); + + // calculates if given point is on given polygon, taking care of the numerical epsilon. Uses + // isPointOnLine internally + BASEGFX_DLLPUBLIC bool isPointOnPolygon(const B3DPolygon& rCandidate, const B3DPoint& rPoint); + + // helper to get a fCut position between a plane (given with normal and a point) + // and a line given by start and end point + BASEGFX_DLLPUBLIC bool getCutBetweenLineAndPlane(const B3DVector& rPlaneNormal, const B3DPoint& rPlanePoint, const B3DPoint& rEdgeStart, const B3DPoint& rEdgeEnd, double& fCut); + + /** snap some polygon coordinates to discrete coordinates + + This method allows to snap some polygon points to discrete (integer) values + which equals e.g. a snap to discrete coordinates. It will snap points of + horizontal and vertical edges + + @param rCandidate + The source polygon + + @return + The modified version of the source polygon + */ + BASEGFX_DLLPUBLIC B3DPolygon snapPointsOfHorizontalOrVerticalEdges(const B3DPolygon& rCandidate); + +} // end of namespace basegfx::utils + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |