Re: Spherical Light

[James W. W. <os...@jw...>]

On Jul 2, 2007, at 7:27 AM, Jose' Cruanyes wrote:

>
> Il giorno 02/lug/07, alle ore 15:42, Roger Holmes ha scritto:
>>

>> If it needs an extra data field, your spherical light should inherit
>> from point light. Can we make it so that renderers which do not
>> support them see the base class instead, and just give crisper
>> shadows.
>
> I've not still decided, but the better (IMHO) will be to extend the
> point light, call it spherical, and let access it fron the old API as
> point light, when the radius data will be ignored
>
> the problem will be the metafile I/O, in reading old files there's no
> problem, the problem is in reading new files with old code... the
> lights will be lost, since it will be saved as spherical, and the old
> code expects point lights, unless we don't save the lights with
> radius 0.0 as point lights...
>
> I'll update the Quesa renderers to use it as point light,
>
> for the Microspot, you can just add a case label and treat it as
> point light,

If a spherical light is a subclass of point light, then presumably  
Q3Light_GetType would return kQ3LightTypePoint for a spherical light,  
and the Interactive and OpenGL renderers would not need any update.