Jeffs,
I always just treat the 1 unit as a general meter. Typically i use that as a 'meterstick' (excuse the pun) to determine how i want to scale my entities, or build them.
A good way to gauge this is to check the general size of 3d meshes exported from your favorite 3d app (milkshape, 3ds etc) . I have settled on a process which lets me end up with meshes that are approx 2 units/meters tall. Which is approx 6 feet. All of my entity types that i use have a 'scale' factor which on load, adjusts the mesh accordingly if it is not sized correctly in the first place.
I think the general trick is to pick a unit of measure (1 unit = meter/foot/yard..etc.) and stick with it.
I always just treat the 1 unit as a general meter. Typically i use that as a 'meterstick' (excuse the pun) to determine how i want to scale my entities, or build them.
A good way to gauge this is to check the general size of 3d meshes exported from your favorite 3d app (milkshape, 3ds etc) . I have settled on a process which lets me end up with meshes that are approx 2 units/meters tall. Which is approx 6 feet. All of my entity types that i use have a 'scale' factor which on load, adjusts the mesh accordingly if it is not sized correctly in the first place.
I think the general trick is to pick a unit of measure (1 unit = meter/foot/yard..etc.) and stick with it.