https://blog.csdn.net/lweiyue/article/details/103033630? Utm_source=app
Look at the front of this article understand, behind only
Double vx=v1x + v2x;
Double vy=v1y + v2y;
Double n=l/norm (vx, vy);

This don't know what the calculation

CodePudding user response:

Vector and?

CodePudding user response:

See, l * (v1x/norm) this formula is broken