37 lines
1.2 KiB
C++
37 lines
1.2 KiB
C++
// This file is part of libigl, a simple c++ geometry processing library.
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//
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// Copyright (C) 2013 Alec Jacobson <alecjacobson@gmail.com>
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//
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// This Source Code Form is subject to the terms of the Mozilla Public License
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// v. 2.0. If a copy of the MPL was not distributed with this file, You can
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// obtain one at http://mozilla.org/MPL/2.0/.
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#ifndef IGL_POINT_IN_POLY_H
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#define IGL_POINT_IN_POLY_H
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#include "igl_inline.h"
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#include <vector>
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namespace igl
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{
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// Determine if 2d point is inside a 2D polygon
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// Inputs:
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// poly vector of polygon points, [0]=x, [1]=y.
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// Polyline need not be closed (i.e. first point != last point),
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// the line segment between last and first selected points is constructed
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// within this function.
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// x x-coordinate of query point
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// y y-coordinate of query point
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// Returns true if query point is in polygon, false otherwise
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// from http://www.visibone.com/inpoly/
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bool IGL_INLINE point_in_poly( const std::vector<std::vector<unsigned int > >&poly,
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const unsigned int xt,
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const unsigned int yt);
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}
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#ifndef IGL_STATIC_LIBRARY
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# include "point_in_poly.cpp"
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#endif
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#endif
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