Perspective Calculator

It finds ways to do perspective in .ass subtitles if you want rectangle to be rotated into a known tetragon. Improve your typesetting easily, just follow the below steps:

Step 1

Find something similar to a rectangle and draw a tetragon with Aegisub's clipping tool clockwise order starting from top-left:

Step 2

Copy and paste the \clip tag, and optionally the \pos tag too, then press the button:

Step 3

Use one of the below tags:

Perspective matching failed. Change some of the points and try again.

Done!

Now just style it as you want. Simple, it isn't?

Want to know more? Check the project page.