135 lines
6 KiB
C++
135 lines
6 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/*
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* This file is part of the LibreOffice project.
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*
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* This file incorporates work covered by the following license notice:
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed
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* with this work for additional information regarding copyright
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* ownership. The ASF licenses this file to you under the Apache
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* License, Version 2.0 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.apache.org/licenses/LICENSE-2.0 .
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*/
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#ifndef INCLUDED_BASEGFX_POLYGON_B3DPOLYGONTOOLS_HXX
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#define INCLUDED_BASEGFX_POLYGON_B3DPOLYGONTOOLS_HXX
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#include <basegfx/point/b3dpoint.hxx>
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#include <basegfx/vector/b3dvector.hxx>
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#include <basegfx/polygon/b3dpolypolygon.hxx>
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#include <basegfx/vector/b2enums.hxx>
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#include <vector>
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#include <basegfx/basegfxdllapi.h>
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namespace basegfx
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{
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// predefinitions
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class B3DPolygon;
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class B3DRange;
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namespace tools
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{
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// B3DPolygon tools
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/** Check if given polygon is closed. This is kind of a
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'classic' method to support old polygon definitions.
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Those old polygon definitions define the closed state
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of the polygon using identical start and endpoints. This
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method corrects this (removes double start/end points)
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and sets the Closed()-state of the polygon correctly.
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*/
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BASEGFX_DLLPUBLIC void checkClosed(B3DPolygon& rCandidate);
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// Get successor and predecessor indices. Returning the same index means there
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// is none. Same for successor.
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BASEGFX_DLLPUBLIC sal_uInt32 getIndexOfSuccessor(sal_uInt32 nIndex, const B3DPolygon& rCandidate);
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// get size of polygon. Control vectors are included in that ranges.
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BASEGFX_DLLPUBLIC B3DRange getRange(const B3DPolygon& rCandidate);
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// get normal vector of polygon
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BASEGFX_DLLPUBLIC B3DVector getNormal(const B3DPolygon& rCandidate);
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// get area of polygon
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BASEGFX_DLLPUBLIC double getArea(const ::basegfx::B3DPolygon& rCandidate);
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// get length of polygon
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BASEGFX_DLLPUBLIC double getLength(const B3DPolygon& rCandidate);
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/** Apply given LineDashing to given polygon
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For a description see applyLineDashing in b2dpolygontoos.hxx
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*/
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BASEGFX_DLLPUBLIC void applyLineDashing(
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const B3DPolygon& rCandidate,
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const ::std::vector<double>& rDotDashArray,
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B3DPolyPolygon* pLineTarget,
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B3DPolyPolygon* pGapTarget = 0,
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double fFullDashDotLen = 0.0);
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/** Create/replace normals for given 3d geometry with default normals from given center to outside.
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rCandidate: the 3d geometry to change
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rCenter: the center of the 3d geometry
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*/
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BASEGFX_DLLPUBLIC B3DPolygon applyDefaultNormalsSphere( const B3DPolygon& rCandidate, const B3DPoint& rCenter);
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/** invert normals for given 3d geometry.
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*/
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BASEGFX_DLLPUBLIC B3DPolygon invertNormals( const B3DPolygon& rCandidate);
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/** Create/replace texture coordinates for given 3d geometry with parallel projected one
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rRange: the full range of the 3d geometry
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If bChangeX, x texture coordinate will be recalculated.
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If bChangeY, y texture coordinate will be recalculated.
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*/
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BASEGFX_DLLPUBLIC B3DPolygon applyDefaultTextureCoordinatesParallel( const B3DPolygon& rCandidate, const B3DRange& rRange, bool bChangeX = true, bool bChangeY = true);
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/** Create/replace texture coordinates for given 3d geometry with spherical one
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rCenter: the centre of the used 3d geometry
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If bChangeX, x texture coordinate will be recalculated.
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If bChangeY, y texture coordinate will be recalculated.
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*/
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BASEGFX_DLLPUBLIC B3DPolygon applyDefaultTextureCoordinatesSphere( const B3DPolygon& rCandidate, const B3DPoint& rCenter, bool bChangeX = true, bool bChangeY = true);
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// isInside tests for B3DPoint. On border is not inside as long as not true is given in bWithBorder flag.
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BASEGFX_DLLPUBLIC bool isInside(const B3DPolygon& rCandidate, const B3DPoint& rPoint, bool bWithBorder = false);
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// calculates if given point is on given line, taking care of the numerical epsilon
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BASEGFX_DLLPUBLIC bool isPointOnLine(const B3DPoint& rStart, const B3DPoint& rEnd, const B3DPoint& rCandidate, bool bWithPoints = false);
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// calculates if given point is on given polygon, taking care of the numerical epsilon. Uses
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// isPointOnLine internally
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BASEGFX_DLLPUBLIC bool isPointOnPolygon(const B3DPolygon& rCandidate, const B3DPoint& rPoint, bool bWithPoints = true);
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// helper to get a fCut position between a plane (given with normal and a point)
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// and a line given by start and end point
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BASEGFX_DLLPUBLIC bool getCutBetweenLineAndPlane(const B3DVector& rPlaneNormal, const B3DPoint& rPlanePoint, const B3DPoint& rEdgeStart, const B3DPoint& rEdgeEnd, double& fCut);
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/** snap some polygon coordinates to discrete coordinates
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This method allows to snap some polygon points to discrete (integer) values
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which equals e.g. a snap to discrete coordinates. It will snap points of
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horizontal and vertical edges
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@param rCandidate
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The source polygon
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@return
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The modified version of the source polygon
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*/
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BASEGFX_DLLPUBLIC B3DPolygon snapPointsOfHorizontalOrVerticalEdges(const B3DPolygon& rCandidate);
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} // end of namespace tools
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} // end of namespace basegfx
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#endif // INCLUDED_BASEGFX_POLYGON_B3DPOLYGONTOOLS_HXX
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/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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