Re: [Algorithms] Keeping an object's label on the screen

[Monteleone, N. <nat...@lm...>]

Unfortunately the terrain isn't very flat :-(

 

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From: Jeff Russell [mailto:je...@8m...] 
Sent: Wednesday, April 29, 2009 1:43 PM
To: Game Development Algorithms
Subject: Re: [Algorithms] Keeping an object's label on the screen

 

The idea I had in mind was to do something in screen space...  I'd write
out an object ID version of the projected texture, apply it, render the
terrain geometry into a low-res buffer, then compute min/max screen
coords for each object.  Then I could just draw my text label in screen
space based on that information.  Is this a sane approach?

Could be, if your object counts are reasonably small. If this is just
sections of the terrain we're talking about, and your terrain is at
least sort of flat, you could just project the bounds of these shapes
into screen space and center your label accordingly.


-- 
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Jeff Russell
Engineer, 8monkey Labs
www.8monkeylabs.com
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