Jim Holsenback nous illumina en ce 2008-12-23 08:32 -->
> "SharkD" <nomail@nomail> wrote in message 
> news:web.4950dc7b2d61d8ce4a212ac50@news.povray.org...
>> I've created an aircraft engine and would like to create an area behind it 
>> that
>> is distorted due to the heat from the exhaust. What's a good way of 
>> achieving
>> this?
> 
> waves/ripples patterned density map applied to scattering media? .... almost 
> completely transparent. between the camera and object to distort the view. I 
> also just recalled that you may be able to apply a distortion to the camera, 
> not 100% sure! The former idea seems like it would be a localized effect, 
> while the later would have a gloabal effect. Hope that gets some ideas 
> flowing .....
> 
> Jim 
> 
> 
A media won't distort anything.
A distortion applied to the camera will tent to affect the whole scene. It you 
manage to restrict it to a given location, you'll have to change it if you 
change anything. It won't work if there is anything between the camera the the 
parts that you want perturbed.
Some emissive media can be used to make the flame of the exaust visible.

My take would be to place a long cylinder or a cone with pigment rgbt 1 give it 
an ior around 0.99 and use a slight normal perturbation: normal{bozo 0.1 
scale<100,1,1>} for a jet along the x axis. Rotate as needed.

-- 
Alain
-------------------------------------------------
Don't waste your time on a man/woman, who isn't willing to waste their time on you.

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