my problem is not the algorithm how to split the field,
it is more the way how to select one polygon, then select two corners
which control should i use?
a modified modifycontrol or can i reuse a selectcontrol?
Burgholzer,Robert schrieb:
For step 1) The Openlayers example "./examples/select-feature.html"
shows how to select a vector feature.
For step 2-3, ,f you are using postgis server side, there was a thread
recently on the PostGIS listserv that involved some code for splitting
a polygon with a line. I think this might work for you. Since you
already have the capability to draw new shapes you may wish to change
steps 2-3 to:
2) draw a line
and then simply use the function from PostGIS to split your selected
polygon.
The thread pertaining to this is here:
http://postgis.refractions.net/pipermail/postgis-users/2008-May/019892.html
Robert W. Burgholzer
Surface Water Modeler
Office of Water Supply and Planning
Virginia Department of Environmental Quality
[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
804-698-4405
Open Source Modeling Tools:
http://sourceforge.net/projects/npsource/
-----Original Message-----
*From:* [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]
*On Behalf Of *Dipl. Inf. Carsten Eider
*Sent:* Friday, June 13, 2008 4:25 AM
*To:* [EMAIL PROTECTED]; dev@openlayers.org
*Subject:* [OpenLayers-Dev] OL-Based GeoEditor
Hi folks,
i am working on a small geo-editor for an agricultural project in
rhine-palatinat/germany, visit http://www.agroconnect.de for more
information.
Upto now my editor has the following features:
· new polygon, plain OL
· edit polgon, plain OL
· delete polygon, plain OL
· union polygon, OL with a javaserver in the backend
Coming feaures:
· split polygon into 2 elements, OL with server backend
· group polygons
At the moment i am hanging a bit with the split-feature.
My idea is
1. select polygon
2. select first point/vertix as starting point
3. select second point as ending point
4. do split
5. remove polygon and add the new ones
Step 4 will be done on serverside,but could also be done on clientside.
Any ideas how to realize steps 1-3. Should i use several controls
(Select and Modify) or
should i subclass Control.ModifyFeature ?
Any hints will be appreciated.
--
Mit freundlichen Grüßen / Yours faithfully
Carsten Eider
Dipl. Inf. (FH)
Kompetenzzentrum für Innovative Informationssysteme
c/o Fachhochschhule Bingen / University of applied sciences Bingen
Berlinstraße 109
55411 Bingen
Tel: +49 (0) 6721 / 409-179
Fax: +49 (0) 6721 / 409-158
email: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>
Internet: iis.fh-bingen.de
------------------------------------------------------------------------
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Users mailing list
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--
Mit freundlichen Grüßen / Yours faithfully
Carsten Eider
Dipl. Inf. (FH)
Kompetenzzentrum für Innovative Informationssysteme
c/o Fachhochschhule Bingen / University of applied sciences Bingen
Berlinstraße 109
55411 Bingen
Tel: +49 (0) 6721 / 409-179
Fax: +49 (0) 6721 / 409-158
email: [EMAIL PROTECTED]
Internet: iis.fh-bingen.de
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email;internet:[EMAIL PROTECTED]
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