2D Snapshot Readibility of centroid circles and labels

[Hendrik-code]

added contrasting color function to give text of centroids and circles gray or black border depending on its color. made text larger, so that the snapshots are better readable

[Copilot]

Pull Request Overview

This PR improves the 2D snapshot readability by enhancing the contrast and size of centroid circles and their labels.

• Introduces a new utility function to select contrasting stroke colors.
• Increases centroid circle radius and updates text styling with stroke effects.
• Adjusts arrow color computation (though the modulo arithmetic uses a mismatched variable).

Comments suppressed due to low confidence (2)

TPTBox/spine/snapshot2D/snapshot_modular.py:508

• The expression for computing the arrow color uses 'color - 1 % LABEL_MAX % cmap.N', but 'color' is already a mapped color from cmap. Consider using the same index calculation as for circles (e.g., (k1 - 1) % LABEL_MAX % cmap.N) to ensure consistent coloring.

axs.add_patch(FancyArrow(v[1] * zms[1], v[0] * zms[0], c, d, color=cmap(color - 1 % LABEL_MAX % cmap.N)))

TPTBox/spine/snapshot2D/snapshot_modular.py:587

• The arrow color calculation uses 'color - 1 % LABEL_MAX % cmap.N' where 'color' has already been set via cmap. To maintain consistency with other elements, use the appropriate index (e.g., (k1 - 1) % LABEL_MAX % cmap.N) for determining the arrow color.

axs.add_patch(FancyArrow(v[2] * zms[2], v[0] * zms[0], c, d, color=cmap(color - 1 % LABEL_MAX % cmap.N)))