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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 .
*/
#ifndef INCLUDED_BASEGFX_POLYGON_B3DPOLYGONTOOLS_HXX
#define INCLUDED_BASEGFX_POLYGON_B3DPOLYGONTOOLS_HXX
#include <basegfx/point/b3dpoint.hxx>
#include <basegfx/vector/b3dvector.hxx>
#include <basegfx/polygon/b3dpolypolygon.hxx>
#include <basegfx/vector/b2enums.hxx>
#include <vector>
#include <basegfx/basegfxdllapi.h>
//////////////////////////////////////////////////////////////////////////////
namespace basegfx
{
// predefinitions
class B3DPolygon;
class B3DRange;
namespace tools
{
// 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 normal vector of polygon
BASEGFX_DLLPUBLIC B3DVector getNormal(const B3DPolygon& rCandidate);
// get area of polygon
BASEGFX_DLLPUBLIC double getArea(const ::basegfx::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
*/
BASEGFX_DLLPUBLIC void applyLineDashing(
const B3DPolygon& rCandidate,
const ::std::vector<double>& rDotDashArray,
B3DPolyPolygon* pLineTarget,
B3DPolyPolygon* pGapTarget = 0,
double fFullDashDotLen = 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
*/
BASEGFX_DLLPUBLIC 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.
*/
BASEGFX_DLLPUBLIC B3DPolygon applyDefaultTextureCoordinatesParallel( const B3DPolygon& rCandidate, const B3DRange& rRange, bool bChangeX = true, bool bChangeY = true);
/** 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.
*/
BASEGFX_DLLPUBLIC B3DPolygon applyDefaultTextureCoordinatesSphere( const B3DPolygon& rCandidate, const B3DPoint& rCenter, bool bChangeX = true, bool bChangeY = true);
// 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 = false);
// 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 = false);
// 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, bool bWithPoints = true);
// 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 tools
} // end of namespace basegfx
#endif // INCLUDED_BASEGFX_POLYGON_B3DPOLYGONTOOLS_HXX
/* vim:set shiftwidth=4 softtabstop=4 expandtab: */
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