Re: [Flightgear-devel] 18th Century city texture

Josh Babcock Sat, 20 Dec 2003 16:46:23 -0800

Would it not make sense to determine a "visible range" attribute automatically based on size? These issues may already be addressed by some LOD systems anyway. Any LOD people out there? I do agree that certain custom objects should have user defined priorities. I can't see a computer determining how important a certain object is to VFR. Designers would really have to agree on a way to determine this though. What one person considers a major landmark, someone else may not. I forsee a need for a set of general conventions so that everyone is on the same page. Mayber instead of assigning a numeric level to an object, it would be better to assign it several classifications, and let individual users decide what weights to assign various characteristics. For instance user a may feel that a medium sized object with large uniquenes of design is more important where another would rate a large sized object with medium uniquenes of design higher.

Josh

Paul Surgeon wrote:

On Saturday, 20 December 2003 20:27, Matevz Jekovec wrote:

Hm... as mentioned before if I recall correctly, it would be cool to add a time interval property for terrain objects (eg. WTC twin towers from 1979 to 2001)

While we're adding time properties to scenery models we need to add priority (or object type) and range properties to models as well.

Priority/object type will be needed in future to allow certain objects like landmarks to take priority over less important objects like trees when the user adjusts the amount of 3D objects to be shown. (sparse <--> dense) A sky scraper should also take priority over a town house although both are buildings.

A range property would be useful for only displaying objects that are within "visible range". For instance the user may select to show all 3D objects within a 50 km radius. However a tree is barely visible from 10 km unlike a sky scraper which is visible from a long way off.

Paul
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Re: [Flightgear-devel] 18th Century city texture

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