Collect all kinds of 2d programming exceptions and fault solutions.

Is there some sort of 2D LIS algorithm?

I'm currently triyng to solve a problem as follows:
You are given n pairs of integers (points in the plane). If a point is given before other, its priority is higher. The program's task is to find ...

Why are Inkscape default extensions not working?

After perspective
Before perspective
Correct perspective
I am using Inkscape v. 1.0. Here when I am using the perspective extension, it is not likely worked and you see the image after perspective ...