How do you develop code for move in the opposite axis the ball inside two canvases?

[Archivos_Universidad]

I'm trying to create a simetric draw using canvas and ball but, I can't move the ball in the opposite direction.
someone try some like this before?

it should be drawn where the red line is

[TIMAI2]

Are your two canvases of a fixed size, e.g. set by pixels e.g. 200x200 ? (this makes the solution easier)

c1 x = 200   c1 y = 20
c2 x = 0     c2 y = 20

[Archivos_Universidad]

yes, they are of the same size but, i don't know how to code the solution, help please

[TIMAI2]

A simple example

[Archivos_Universidad]

the same for the y axis? cause i try it and works!!! you are awesome AWESOME!!!!

[ChrisWard]

Could you not use one Canvas with the squares drawn on it?

[TIMAI2]

You can....

but more blocks code needed to avoid possible unwanted results....