Ray method to judge the relationship between point
2016-08-23
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MATLAB training program (Ray method to determine the relationship between point and polygon) is a computational geometry. Ray method to determine the relationship between point and polygon principle is as follows: draw a ray from the judge, ray intersects the polygon, if the intersection point is even, the point is not within the polygon, if node is odd, the point in polygon. Although the principle is, some details still need to pay attention to, such as Ray or Ray coincides with the one side of the polygon polygon vertices, also required the special judge. There is no special judge, because I am only familiar with the principles, is not the actual use. Well, I was too lazy, don't want to judge.
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