Add additional math methods

[tychedelia]

Closes #135

We're going with remap as noted here: https://discord.com/channels/1076634729618624534/1473643112512491692/1496498755028127905

[SableRaf]

Not a blocker but we could potentially add the optional 6th argument from p5.js's version of the map() function: map(value, start1, stop1, start2, stop2, [withinBounds]) where withinBounds is a boolean which (if true) makes the function constrain the return value to the newly mapped range.

[SableRaf]

Could we explicitly address the tradeoffs before making a decision on map() vs remap()?

From issue #131 it seems like there are at least two possible directions:

1. Keep map() for Processing compatibility, possibly by dispatching based on arguments like Processing.py does.
2. Use remap() to avoid shadowing Python’s built-in map(), like py5 does (see @hx2A's comment on 131)

Note: we should document this type of decisions on GitHub, since not everyone is on Discord and messages there are not publicly available without an account.

[SableRaf]

This PR implements the following functions from Processing4:

sin(), cos(), tan(), asin(), acos(), atan(), atan2(), sqrt(), exp(), log(), ceil(), floor(), degrees(), radians(), sq(), pow(), constrain(), lerp(), norm(), map(), mag(), dist()

It's currently missing:

• abs()
• max()
• min()
• round()

[tychedelia]

I should leave a comment to make this clear, but these are available in the global python namespace and I believe match processing semantics already.

Ex:

[I]  char@mbp ~/s/g/p/libprocessing  $ python3                                                                                                                                                                                            compute-2
Python 3.14.4 (main, Apr  7 2026, 13:13:20) [Clang 17.0.0 (clang-1700.6.4.2)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
>>> round
<built-in function round>

[SableRaf]

Do all of these methods behave like their Processing equivalent?

[tychedelia]

I will double check again, but I am pretty sure that they do.