[GRASS-user] new module: r.surf.volcano

GRASS GRASS user
1

Hamish wrote:

I just added a new module to the wiki addons page:
r.surf.volcano

It creates an artificial surface resembling a seamount or cone volcano.
The user can alter the size and shape of the mountain and optionally
roughen its surface.

I just checked in an update which allows the volcano to have a crater.
screenshot attached of fully artificial GRASS landscape, commands given
as an example in the help page.
(r.mapcalc "r.surf.fractal + r.surf.volcano")

.... now where's that wiki page on GRASS + POVray?

Hamish

(attachments)

r.surf.volcano2.jpg

2

On Mon, Apr 20, 2009 at 8:53 PM, <hamish_b@yahoo.com> wrote:

Hamish wrote:

I just added a new module to the wiki addons page:
r.surf.volcano

It creates an artificial surface resembling a seamount or cone volcano.
The user can alter the size and shape of the mountain and optionally
roughen its surface.

I just checked in an update which allows the volcano to have a crater.
screenshot attached of fully artificial GRASS landscape, commands given
as an example in the help page.
(r.mapcalc "r.surf.fractal + r.surf.volcano")

.... now where's that wiki page on GRASS + POVray?

Hamish

Awsome! Here is a start on the povray stuff:

http://mpa.itc.it/markus/povray/
http://casoilresource.lawr.ucdavis.edu/drupal/node/80

Cheers,

Dylan

3

This is very cool Hamish

Michael

On 4/20/09 8:53 PM, "hamish_b@yahoo.com" <hamish_b@yahoo.com> wrote:

Hamish wrote:

I just added a new module to the wiki addons page:
r.surf.volcano

It creates an artificial surface resembling a seamount or cone volcano.
The user can alter the size and shape of the mountain and optionally
roughen its surface.

I just checked in an update which allows the volcano to have a crater.
screenshot attached of fully artificial GRASS landscape, commands given
as an example in the help page.
(r.mapcalc "r.surf.fractal + r.surf.volcano")

.... now where's that wiki page on GRASS + POVray?

Hamish

__________________________________________
Michael Barton, Professor of Anthropology
Director of Graduate Studies
School of Human Evolution & Social Change
Center for Social Dynamics & Complexity
Arizona State University

phone: 480-965-6213
fax: 480-965-7671
www: http://www.public.asu.edu/~cmbarton

4

On Tue, Apr 21, 2009 at 6:02 AM, Dylan Beaudette <dylan.beaudette@gmail.com> wrote:
…

Awsome! Here is a start on the povray stuff:

http://mpa.itc.it/markus/povray/
http://casoilresource.lawr.ucdavis.edu/drupal/node/80

An an extra gimmick I have uploaded a script to generate
the camera parameters for Povray in a GRASS location
(r.out.povscript) to

http://grass.osgeo.org/wiki/POV-Ray

Output (spearfish):

r.out.povscript elevation.dem

n:4928048.40335941
±----------------+
| |
w:589947.947136 | | e:609027.947136
| |
| c <-*C | c: center (599487.9 4920863.4)
| | C: camera (pos: x 75%, y 50%)
| |
| | N-S extent: 14370.000000
±----------------+
s:4913678.40335941
← E-W extent: 19080.000000 →

Povray control file parameters:
light_source: < 604257.947136, 7000, 4899308.403359 >
Camera: < 604257.947136, 1949.000000, 4920863.403359 >
Look at: < 599487.947136, 1249, 4920863.403359 >
DEM scale: < 19080.000000, 65535, 14370.000000 >
DEM translate: < 589947.947136, 0, 4913678.40335941 >

Then happily recycle scripts from my old Web page to render
something.

cheers
Markus