Re: [Algorithms] Geodesic Sphere (explosion)

[Michael S. H. <mic...@ud...>]

I've found it easiest and most convincing just to use a static half-sphere which is billboarded and scaled as the explosion expands.  Since the texture used is typically an alpha texture which represents an object that has its own "light", I don't worry about the normal going a bit whacky.  Combine the scaling with a bit of texture animation and you end up with good looking explosions.

At 03:52 PM 8/23/00, you wrote:
>Can't you just have a mesh of half a circle and scale it? (Or interpolate
>between 2 frames if it would screw up your dynamic lights)
>
>Odin
>----- Original Message -----
>From: "Aldo Spanghero" <al...@ho...>
>To: <gda...@li...>
>Sent: Wednesday, August 23, 2000 3:44 PM
>Subject: RE: [Algorithms] Geodesic Sphere
>
>
>> Hi.
>>
>> An icosahedron would be fine. I will use it to create 3D explosion for my
>> game.
>> Do you know some algoritm to generate an icosahedron?
>>
>> Thank you.
>>
>> And thanks to the other guys for the answers!
>>
>> >
>> >I don't think the geodesic is made of equilateral triangles ... in fact I
>> >believe the only solid of vaguely spherical shape that you can make with
>> >equilateral triangles is the icosahedron (20 tri's)
>> >
>> >Apart from that I can't help, but I'd have thought a quick search on the
>> >web
>> >would throw up several.
>> >
>> >Robert
>>
>> ________________________________________________________________________
>> Get Your Private, Free E-mail from MSN Hotmail at http://www.hotmail.com
>>
>>
>> _______________________________________________
>> GDAlgorithms-list mailing list
>> GDA...@li...
>> http://lists.sourceforge.net/mailman/listinfo/gdalgorithms-list
>>
>
>
>_______________________________________________
>GDAlgorithms-list mailing list
>GDA...@li...
>http://lists.sourceforge.net/mailman/listinfo/gdalgorithms-list