Create Polygon class with a few functions and tests

[m-reuter]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 81.15942% with 26 lines in your changes missing coverage. Please review.
✅ Project coverage is 44.53%. Comparing base (6b0882c) to head (8dd5736).
⚠️ Report is 16 commits behind head on main.

Files with missing lines	Patch %	Lines
lapy/polygon.py	83.58%	12 Missing and 10 partials ⚠️
lapy/tria_mesh.py	0.00%	4 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #99      +/-   ##
==========================================
+ Coverage   42.89%   44.53%   +1.64%     
==========================================
  Files          15       15              
  Lines        2625     2746     +121     
  Branches      324      348      +24     
==========================================
+ Hits         1126     1223      +97     
- Misses       1387     1401      +14     
- Partials      112      122      +10     

Flag	Coverage Δ
unittests	44.53% <81.15%> (+1.64%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[Copilot]

Pull request overview

This PR introduces a new Polygon class to replace the previous functional polygon.resample API, providing a more comprehensive object-oriented interface for working with 2D and 3D polygon paths. The class encapsulates polygon data and offers methods for geometric computations, resampling, and smoothing operations.

Key changes:

• Refactored polygon module from functional to object-oriented design with a Polygon class
• Added geometric computation methods (length, centroid, area) beyond just resampling
• Introduced Laplace and Taubin smoothing methods for polygon paths
• Updated integration point in tria_mesh.py to use the new Polygon API
• Comprehensive test suite covering initialization, geometric operations, resampling, and smoothing

Reviewed changes

Copilot reviewed 4 out of 4 changed files in this pull request and generated 12 comments.

File	Description
lapy/polygon.py	Complete refactor introducing the Polygon class with methods for geometric computations, resampling, and smoothing operations
lapy/utils/tests/test_polygon.py	Extensive test suite rewritten to test the new Polygon class covering all major methods and edge cases
lapy/tria_mesh.py	Updated to use new Polygon class API for path resampling in level_path method
lapy/init.py	Added Polygon to package-level exports for public API access

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[Copilot]

@m-reuter I've opened a new pull request, #100, to work on those changes. Once the pull request is ready, I'll request review from you.

[Copilot]

@m-reuter I've opened a new pull request, #101, to work on those changes. Once the pull request is ready, I'll request review from you.