Use a point object instead of x, y arguments

[osresearch]

Since the _local_to_world() and _world_to_local() return tuples, what do you think about having a class that implements points instead of passing x, y arguments? They could also carry a flag for world or local coordinates, allowing the functions to take either pre-translated or untranslated coords.

[cibomahto]

Hmm- I'd prefer not to introduce an extra layer to interact with the interface, though an absolute point would be convenient would be convenient for this.

[osresearch]

For my Track class (#3) I added an optional argument world=false so that coordinates can be specified in default local or optionally world frame. Adding such an option to each method of painter is doable, but might be as invasive as a point class.

[cibomahto]

How about a container that explicitly stores a fixed position: main...fixedpoint

[cibomahto]

Could also add a convenience function to CircuitPainter, that returns a point, something like:

class CircuitPointer:
    ...
    def get_fixed_point(self, x, y):
        return FixedPoint(self, x, y)