Is "Keep Scale" confusing?

Recently a few instances of confusion over when "Keep Scale" should be used in the baker have come up. Both "Keep Scale" and "Keep Center" are off by default and both have a reducing effect on the used colour range for the sculpt map bake. So my thought is that this should be explained in the documentation rather than by renaming the button. Does something like this make it clear? This is sort of the style I have in mind for the user manual. Is the balance between explaining the feature and it's technical aspects ok? The final manual will have pictures of meshes and their bounding boxes to visually illustrate the effects as well.

Keep Center and Keep Scale when baking

When baking, each mesh has a bounding box box calculated from it's local vertex co-ordinates. So for a standard sphere this gives a range of -0.5 to +0.5 on each axis. After modelling, it's unlikely this will still be the case, so by default (to give optimal sculpt map quality) the mesh is recentered before calculating the bounding box so each axis is always -n to +n with 0.0, 0.0, 0.0 as the center.

With "Keep Center" enabled, two things are done. First the recenter step is skipped, so the range could still be something like -0.6 to +0.2. However this leaves the mesh center at -0.2 so the bake range has to be adjusted. This is done by taking the higher of the absolutes (no negative numbers) of the minimum and maximum as n, and using -n to +n as the bake range. So -0.6 to +0.2 becomes -0.6 to +0.6 This is calculated on a per axis basic to maintain as much quality as possible. This is most useful for objects that will need to rotate inworld, such as doors, as it lets you precisely place the pivot point in the mesh. The further the center is placed from the mesh center the more modelling detail you lose. For a door with the center at one corner of the X,Y planes and in the middle of Z, you'd lose 50% in X & Y as 0.0 to 0.5 becomes -0.5 to 0.5 and 0% in Z.

With "Keep Scale" enabled the minimum value for each axis is set to the lowest of all three values. Similarly the highest of all three maximum values is used to set the top end of the ranges. So -0.2 to +0.6, -0.5 to +0.7, -0.4 to + 0.5 would become -0.5 to +0.7 on all three axis. If you also had "Keep Center" enabled, then it would be -0.7 to +0.7 on all three axis. This gives a sculptie which has the proper proportions at a scale of 1.0 x 1.0 x 1.0 by sacrificing modelling detail. It has limited uses such as square megaprims or easy to use maps for almost square objects.

Both "Keep Center" and "Keep Scale" will result in a bounding box for your sculptie that is larger than the actual mesh, so their use should be avoided except in cases where their benefit outweights this disadvantage.