[leveller] Re: Preview of new plug-in: Dried Lake
- From: "Carl Lingard" <lingardc@xxxxxxxxxxxxx>
- To: <leveller@xxxxxxxxxxxxx>
- Date: Sun, 19 Aug 2007 16:43:35 +0100
Great idea Greg- that kind of thing.
User input for fictional stuff would be necessary- drawing simple polylines,
or import them as shp, ai, svg.. Ideally you would simply want to draw
roads, rivers and the total area that farmlands could be in. Then the algo
could build the cells based on that. I usually create the total possible
area from a slope based selection- ie farmed land will not be on high
slopes.
This all sounds good- shp file support would open up all sorts of
possibilties- now that Lev has the georeffing, all this GIS data is useful
right? :)
Do you have any plans for the vector code Ray? -Vectre.
Carl
----- Original Message -----
From: "Greg Sandor" <gregory_sandor@xxxxxxxxxxx>
To: <leveller@xxxxxxxxxxxxx>
Sent: Sunday, August 19, 2007 2:32 PM
Subject: [leveller] Re: Preview of new plug-in: Dried Lake
It would be nice to be able to use greyscale masks, i.e. Landsat bands or
Forest Service overlays to restrict the field creation.
Regards,
Greg
(614) 517-7204
greg@xxxxxxxxxxxxxx
http://www.gregsandor.com
----- Original Message -----
From: "Ray Gardener" <rayg@xxxxxxxxxxxxxxxxxx>
To: <leveller@xxxxxxxxxxxxx>
Sent: Sunday, August 19, 2007 2:24 AM
Subject: [leveller] Re: Preview of new plug-in: Dried Lake
It's an interesting idea for sure. Texture generation in general is
something Leveller could help more with, since it has a lot of data
available (slope, etc.).
Some user input might be warranted -- e.g., the user draws an n-sided
poly indicating that it can be filled with farms (or make a selmask as
you said). Another thing along those lines was to automate access to an
image server to just grab the satelite imagery corresponding to a
georeffed area. Of course that wouldn't be appropriate for fictional
terrain.
Since GDAL includes OGR for shape layers, one of the next things was to
import shapefiles as actual shape layers, db info and all, and that would
give enough data to know where roads, etc. where.
Ray
Carl Lingard wrote:
Hey Ray, looks convincing- what would be real useful, is the ability to
have those cells limit themselves to pre-defined areas- maybe masked or
whatever. This would give you clusters of cells. The idea is that you
could use this to create textures for farmlands. You would need a way of
extracting the intersection of cells- they would be the texture for the
fences and hedgerows- could be done with a slope selector. The tricky
bit is having the fields convincingly follow and grow from the roads and
rivers, rather than simply stamping the cell pattern onto the road/.
rivers.
Carl
Been tinkering with the Cells plug-in and a derived form will allow
easily simulating dried up water areas:
http://www.daylongraphics.com/products/leveller/gallery/desert/dried_lake.jpg
Ray
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