AOO410/main/basegfx/inc/basegfx/polygon/b2dpolygoncutandtouch.hxx

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#ifndef _BGFX_POLYGON_CUTANDTOUCH_HXX
#define _BGFX_POLYGON_CUTANDTOUCH_HXX

#include <basegfx/polygon/b2dpolygon.hxx>
#include <basegfx/polygon/b2dpolypolygon.hxx>

//////////////////////////////////////////////////////////////////////////////

namespace basegfx
{
	namespace tools
	{
		// look for self-intersections and self-touches (points on an edge) in given polygon and add
		// extra points there. Result will have no touches or intersections on an edge, only on points
		B2DPolygon addPointsAtCutsAndTouches(const B2DPolygon& rCandidate);

		// look for polypolygon-intersections and polypolygon-touches (point of poly A on an edge of poly B) in given PolyPolygon and add
		// extra points there. Result will have no touches or intersections between contained polygons on an edge, only on points. For
		// convenience, the correction for self-intersections for each member polygon will be used, too.
		// Changed: Self intersections are searched by default, but may be switched off by 2nd parameter.
		B2DPolyPolygon addPointsAtCutsAndTouches(const B2DPolyPolygon& rCandidate, bool bSelfIntersections = true);

		// look for intersections of rCandidate with all polygons from rMask and add extra points there. Do
		// not change or add points to rMask.
		B2DPolygon addPointsAtCutsAndTouches(const B2DPolyPolygon& rMask, const B2DPolygon& rCandidate);

		// look for intersections of rCandidate with all polygons from rMask and add extra points there. Do
		// not change or add points to rMask.
		B2DPolyPolygon addPointsAtCutsAndTouches(const B2DPolyPolygon& rMask, const B2DPolyPolygon& rCandidate);

		// look for intersections of rCandidate with the edge from rStart to rEnd and add extra points there.
        // Points are only added in the range of the edge, not on the endless vector.
        B2DPolygon addPointsAtCuts(const B2DPolygon& rCandidate, const B2DPoint& rStart, const B2DPoint& rEnd);
        B2DPolyPolygon addPointsAtCuts(const B2DPolyPolygon& rCandidate, const B2DPoint& rStart, const B2DPoint& rEnd);

		// look for intersections of rCandidate with the mask Polygon and add extra points there.
        // The mask polygon is assumed to be closed, even when it's not explicitely.
        B2DPolygon addPointsAtCuts(const B2DPolygon& rCandidate, const B2DPolyPolygon& rMask);
        B2DPolyPolygon addPointsAtCuts(const B2DPolyPolygon& rCandidate, const B2DPolyPolygon& rMask);

		// look for self-intersections in given polygon and add extra points there. Result will have no 
        // intersections on an edge
		B2DPolygon addPointsAtCuts(const B2DPolygon& rCandidate);

        // add points at all self-intersections of single polygons (depends on bSelfIntersections)
        // and at polygon-polygon intersections
		B2DPolyPolygon addPointsAtCuts(const B2DPolyPolygon& rCandidate, bool bSelfIntersections = true);

    } // end of namespace tools
} // end of namespace basegfx

//////////////////////////////////////////////////////////////////////////////

#endif /* _BGFX_POLYGON_CUTANDTOUCH_HXX */