How can we quickly build the area in the middle of the four # Line

Problem: There are four polylines arranged in the "well" shape, and the "Mouth" in the middle of the line segment, each side length is greater than 249, how to make the "Mouth" face faster? Do not turn left.AlgorithmMethod 1.

Solution:

1. Merge four polylines into one polyline, which has four paths;

2. Simplify the new polyline and divide it into 12 segments in the memory.

3. Take the segment with a length greater than 249 and put the four segments in total into an empty multipoint. Obviously, four segments are repeated.

What about the following? We want to simplify the repeat into four? Then, the coordinates of each vertex are calculated to make sure that they form a rectangular plane clockwise? This is too troublesome.

My practice is itopologicaloperator: convexhull. Find out the outer contour of these eight points and get it done once!