Google Earth is Free - Page 17

James_In_Utah · 02-12-2007, 06:11 AM

Ideally I would be able to programatically refresh the color of shapefiles on a timer, say every minute or so. The XML will reside on a server, and the shapes themselves will be on the clients. It sounds like every minute or two I would have some process that just deletes all shapes and reload them base on the xml file on the server. Do you think the new code will support that type of functionality?
Thanks,
James

withak · 02-12-2007, 06:34 AM

You could do that right now with a plugin.

James_In_Utah · 02-12-2007, 07:40 AM

If I started with the current shapefileloader, would it be a big deal to add logic to remove whatever shapes it had loaded? Then, if that works, just put it on a timer to unload and reload every two minutes? I guess actually changing the color of a polygon in a loaded shapefile is out of the question?
Thanks,

James

Chade · 02-13-2007, 12:11 AM

Shouldn't they all just be in a RenderableObjectList? It should be all rather malleable through that...

withak · 02-13-2007, 12:18 AM

From the point of view of the RenderableObjectList, a shapefile layer is just a qts (that happens to be stored in memory and generated on the fly instead of being stored on disk and downloaded). So you would have to regenerate the entire layer to change one thing in it.

Chade · 02-13-2007, 12:20 AM

Urgh.

withak · 02-13-2007, 12:45 AM

Yeah. Hence my attempt to treat the data in shapefiles like the vector objects they really are.

James_In_Utah · 02-13-2007, 04:22 AM

If you can get the alpha blend thing to make your shapefile loader do opaque shapes I would switch. We load up about 300 shapefiles, and indicate status of radar sites with colors. As it stands right now, if one site changes color, I have to unload the whole thing, currently by reloading earth, and then redraw all the shapes. On a typical desktop client, this can take maybe a minute or two. Also, once they are all loaded, zooming and panning is almost painful. Any suggestions on how to deliver this functionality to my users in a more fluid approach would be appreciated!
Thanks,
James

TomServo · 02-13-2007, 02:00 PM

Yea know... I should really do a feature post once a month with what people are doing with World Wind.... because I really want to see what James_In_Utah is doing

bull · 02-13-2007, 09:36 PM

If you did that 'they' would have to kill you.

02-12-2007, 07:40 AM	#163
James_In_Utah Super Member Join Date: Jan 2006 Location: Eden, Utah Posts: 1,446	If I started with the current shapefileloader, would it be a big deal to add logic to remove whatever shapes it had loaded? Then, if that works, just put it on a timer to unload and reload every two minutes? I guess actually changing the color of a polygon in a loaded shapefile is out of the question? Thanks, James Last edited by James_In_Utah; 02-12-2007 at 06:23 PM.

02-13-2007, 12:11 AM	#164
Chade Senior Member Join Date: Apr 2006 Posts: 404	Shouldn't they all just be in a RenderableObjectList? It should be all rather malleable through that... __________________ Machine. Unexpectedly, I’d invented a time - Alan Moore

02-13-2007, 12:20 AM	#166
Chade Senior Member Join Date: Apr 2006 Posts: 404	Urgh. __________________ Machine. Unexpectedly, I’d invented a time - Alan Moore

02-13-2007, 02:00 PM	#169
TomServo God. Root. What is difference? Join Date: Sep 2004 Location: Eastern Pennsylvania Posts: 2,856	Yea know... I should really do a feature post once a month with what people are doing with World Wind.... because I really want to see what James_In_Utah is doing __________________ Earth is Square blog PUBLIC NOTICE AS REQUIRED BY LAW: Any use of this forum post, in any manner whatsoever, will increase the amount of disorder in the universe. Although no liability is implied herein, the consumer is warned that this process will ultimately lead to the heat death of the universe.

02-13-2007, 09:36 PM	#170
bull Cosmic Overlord Join Date: Oct 2004 Location: United Kingdom Posts: 2,362	If you did that 'they' would have to kill you. __________________ Bull_[UK] ooo00 Bullsworld.net 00ooo

02-12-2007, 06:11 AM	#161
James_In_Utah Super Member Join Date: Jan 2006 Location: Eden, Utah Posts: 1,446	Ideally I would be able to programatically refresh the color of shapefiles on a timer, say every minute or so. The XML will reside on a server, and the shapes themselves will be on the clients. It sounds like every minute or two I would have some process that just deletes all shapes and reload them base on the xml file on the server. Do you think the new code will support that type of functionality? Thanks, James

02-12-2007, 06:34 AM	#162
withak What? Join Date: Apr 2005 Location: San Francisco, California Posts: 2,464	You could do that right now with a plugin.

02-13-2007, 12:18 AM	#165
withak What? Join Date: Apr 2005 Location: San Francisco, California Posts: 2,464	From the point of view of the RenderableObjectList, a shapefile layer is just a qts (that happens to be stored in memory and generated on the fly instead of being stored on disk and downloaded). So you would have to regenerate the entire layer to change one thing in it.

02-13-2007, 12:45 AM	#167
withak What? Join Date: Apr 2005 Location: San Francisco, California Posts: 2,464	Yeah. Hence my attempt to treat the data in shapefiles like the vector objects they really are.

02-13-2007, 04:22 AM	#168
James_In_Utah Super Member Join Date: Jan 2006 Location: Eden, Utah Posts: 1,446	If you can get the alpha blend thing to make your shapefile loader do opaque shapes I would switch. We load up about 300 shapefiles, and indicate status of radar sites with colors. As it stands right now, if one site changes color, I have to unload the whole thing, currently by reloading earth, and then redraw all the shapes. On a typical desktop client, this can take maybe a minute or two. Also, once they are all loaded, zooming and panning is almost painful. Any suggestions on how to deliver this functionality to my users in a more fluid approach would be appreciated! Thanks, James

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