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] 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] Internet: iis.fh-bingen.de
_______________________________________________ Dev mailing list Dev@openlayers.org http://openlayers.org/mailman/listinfo/dev
