Add EditorInterface methods to get the 2D current grid snapping options

[Calinou]

The following methods are available:

• EditorInterface.is_2d_editor_grid_snap_enabled()
• EditorInterface.is_2d_editor_smart_snap_enabled()
• EditorInterface.is_2d_editor_snap_relative_enabled()
• EditorInterface.is_2d_editor_snap_rotation_enabled()
• EditorInterface.is_2d_editor_snap_scale_enabled()
• EditorInterface.get_2d_editor_grid_offset()
• EditorInterface.get_2d_editor_grid_offset()
• EditorInterface.get_2d_editor_grid_primary_steps()
• EditorInterface.get_2d_editor_grid_step()
• EditorInterface.get_2d_editor_snap_rotation_offset()
• EditorInterface.get_2d_editor_snap_rotation_step()
• EditorInterface.get_2d_editor_snap_scale_step()

Note that in 3D, the grid size is defined by the editors/3d/grid_size editor setting, but it's separate from snapping which is defined on a per-scene basis like in 2D. I suggest unifying this to make it work more like the 2D editor before adding methods that expose it to editor plugins.

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• This closes Implement a way for EditorPlugins to get 2D Editor Grid Snap godot-proposals#10529.

Testing project: test-2d-editor-grid-plugin.zip

[erayzesen]

An important feature set I was expecting, and thank you for your efforts. It would also be great if a feature were added to check whether the user has enabled the 'snap to grid' option in the editor. We usually need this when writing editor plugins for canvas editing, in order to accommodate the user's enabled/disabled 'snap to grid' setting.

[Calinou]

An important feature set I was expecting, and thank you for your efforts. It would also be great if a feature were added to check whether the user has enabled the 'snap to grid' option in the editor. We usually need this when writing editor plugins for canvas editing, in order to accommodate the user's enabled/disabled 'snap to grid' setting.

I've added more methods to query the snapping state (check OP).

[erayzesen]

An important feature set I was expecting, and thank you for your efforts. It would also be great if a feature were added to check whether the user has enabled the 'snap to grid' option in the editor. We usually need this when writing editor plugins for canvas editing, in order to accommodate the user's enabled/disabled 'snap to grid' setting.

I've added more methods to query the snapping state (check OP).

Perfect! Thank you.