[GRASS5] 3D flyover from DEM?

[David Piasecki]

I'm new to anything 3D (Grass or non-Grass), so I'm open to advice. 
Sounds like the VRML is what I was originally envisioning. I'll give 
that a shot.

Thanks,
David


On Jan 6, 2005, at 2:57 PM, Glynn Clements wrote:

>
> David Piasecki wrote:
>
>> Aside from simply setting a point of reference and drawing a static 
>> map
>> based on a DEM, is there a way to generate a 3D map which I can use as
>> some sort of fly-over? In other words, with a DEM and a 2D image
>> overlaid on top, I'd like to generate a file that I can use in a 3D
>> viewer (perhaps Quicktime or something similar) which enables me to
>> zoom in and out and change my point of reference without going back to
>> GRASS to redraw.
>
> I'm not sure what you're asking for.
>
> You can use p.vrml (if it still works) to export a DEM pair to a VRML
> 1.0 ElevationGrid node, which you can then view from any position and
> direction.
>
> Or you can use any of the r.out.* programs to dump the DEM to a raster
> format which can be understood by a rendering package such as POVray,
> and use that to render a fly-over animation.
>
> Also, you can use NVIZ to render a fly-over as a series of images,
> which can be converted to e.g. MPEG using a separate encoder.
>
> -- 
> Glynn Clements <glynn at gclements.plus.com>