Matlab implementation of judging whether a point is inside a polygon

Matlab implementation of judging whether a point is inside a polygon

In computational geometry, determining whether a point is inside a polygon is a common problem. In Matlab, we can use the ray method to solve this problem. The ray method is based on the following principle: if a point is located inside a polygon, then any ray drawn from the point must have an odd number of intersections with the polygon's boundary.

The following is a sample code using Matlab to determine whether a point is inside a polygon:

function inside = isPointInPolygon(point, polygon)
    % 初始化交点计数器
    intersectionCount = 0;
    
    % 获取多边形的顶点数
    numVertices = size(polygon,