Re: radar simulation

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Angus Dorbie (angus++at++division.demon.co.uk)
Wed, 19 Apr 1995 12:17:02 +0100

> We have a customer who needs to connect and Indy to a some sort of
> radar equipment. Old fashioned as they are they want to simulate
> the old kind of display. You know, phosphor that glows for a while
> and then drops in intensity. Would this be a job for performer
> or is there other tools more suitable for this ?
> We would be very grateful for any kind of hints in this direction.

My view is that performer doesn't have a lot to offer this kind of
application.

I'd try GL (orthographic projection) with asynchronous updates to fading
objects on the radar display with a complete redraw only along the sweep
line. This would avoid clearing the framebuffer (probably your biggest
overhead in this type of application) and drawing the whole scene every
frame and it could still be double buffered if required.

Regards,

-- 
 Angus Dorbie                Division Ltd,
 Software Engineer           19 Apex Court,
 Tel: (01454)615554          Woodlands,
 Fax: (01454)615532          Bristol BS12 4JT,
 angus++at++division.demon.co.uk  UK

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