How to create a Cartesian coordinate system in Java and position points relative to it?

Question

Java

Hello, how can I organize a Cartesian coordinate system in Java and position points relative to it?
I drew the coordinate axes, divided them into cells, now I need the points that I draw using drawLine () to be located relative to the Cartesian system that are drawn. Now, I have some points that have negative coordinates, but you can't draw them in the Java coordinate system. Thank you!

Answer 1

Pozhet affine transformation.
In the standard library https://docs.oracle.com/javase/7/docs/api/java/awt...
Or in geotools docs.geotools.org/stable/userguide/tutorial/affine... (this is my own I use)
Well, read https://en.m.wikipedia.org/wiki/Affine_transformation