75 lines
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3.2 KiB
Text
75 lines
No EOL
3.2 KiB
Text
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| Todo
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- M82, HSV , 3M5
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Charlie Scanlon (757) 864-2034 LaRC
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Geotif - geolocation tools for mapping.
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Dr. Nevan Bryant (818) 354-7236
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Position Integrity -- Terravoid Bob Servano (714) 854-2643
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http://www.jpl.nasa.gov/releases/98/damds3.html
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Press release #
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John G. Watson (818) 354-5011 release 98-52
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7/22/98 - add some trig debugging wrappers that can be #ifdef'd in
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kind of like the xgl stuff. The debugging version can do
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bounds checking and such.
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6/10/98 - problem with view culling when not looking forward. Need to
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generate the correct matrix and work it into the calculations.
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6/10/98 - terrain generation - add an option to try to iteratively change
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the error tolerance to try to generate "close" to a certain
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number of vertices so that we can have consistent size, rendering
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speed etc. among various terrain tiles.
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5/26/98 - Add version checking to scenery files
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4/25/98 - Roll all of Time/sunpos.cxx into Astro/sun.cxx
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4/21/98 - Tweak lighting parameter interpolation tables to better fit
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"perceived" reality
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4/21/98 - Make sure all .hxx files have #ifndef cplusplus #error
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Make sure all #ifdef _FILE_H or _FILE_HXX
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4/14/98 - Convert gl__() calls in Cockpit/ to xgl__() calls
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12/29/97 - Add a mechanism to parse additional command line options?
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* No astronomy.
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* Less detailed terrain.
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* Texture - but no MIP-mapping.
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* Texture - but no bilinear blending.
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12/29/97 - sky tweaking
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Steve Baker writes:
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So, by building the sky in the flattened shape, we can have it be
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very foggy at the horizon and clear blue overhead.
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The other important feature of this model is the colours. We
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colour each vertex of the dish individually to allow for cute
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sunsets, a darker blue overhead than at the horizon in daylight, a
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gradual darkening of the sky as a function of altitude for very
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high altitude flight - into space. Also we tint the horizon more
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in the direction of the sun so that sunset starts where the sun
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goes down - and the sky remains blue on the opposite side of the
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sky - then as the sun gets lower, the colour spreads outwards all
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around the sky and the black of night creeps in slowly from the
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opposite side of the sky from the sunset.
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We also like to tint the bottom edge of the sky with white - even
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in broad daylight - so it looks fuzzy - even when there is very
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little fog to achieve that effect.
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We use a text file that contains a lookup table relating the sun
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angle relative to the horizon to:
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* The colour at the top of the sky dome,
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* The colour of the horizon nearest to the sun
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* The colour of the horizon farthest from the sun
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* The colour of the texture environment blend for the clouds.
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* The fog colour.
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We can then tweak that file to set up all the conditions. The
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realtime system interpolates the horizon colours all around the edge
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of the sky. |