Replaces pointer based EXPECT_EQ_ARRAY with EXPECT_EQ_SPAN in most cases
as they already used spans (or span compatible datastructures).
Currently EXPECT_EQ_ARRAY only takes in one size variable and doesn't
compare the number of elements between arguments (requiring an
additional line to do so).
This should make the code cleaner and safer. Goal is also to promote
the use Spans in new test code.
Pull Request: https://projects.blender.org/blender/blender/pulls/140340
This implements the _automerge_ feature which finds nearby end points
during stroke draw and merges the new curve with existing strokes.
New utility functions are added in `geometry` for slightly generalized
functionality. The `curves_merge_endpoints` takes an index map that
describes how to connect curves by index. It performs a topological sort
and reorders connected curves into contiguous ranges. This can be used
with an arbitrary number of connected curves. The tool feature itself
only uses a single curve, based on 2D end point positions.
Unit tests have been added for the curve merge utility function.
Pull Request: https://projects.blender.org/blender/blender/pulls/124459
