Bug rendering objects on the screen

[James_In_Utah]

Hi,
I have been using WW for about a week now and need to be able to accurately plot icons on the screen. I have been using two add-ons that seem to be demonstrating a common problem. The icon is plotted at the correct lat/lon when I am 0 degrees tilt, but not when I am tilted. For instance, from the US Dams XML plugin, the dams seem to change possition on the ground when I tilt the view. I have similar results when I use the AddSavePoints pluging. Below is the code from each of these apps responsible for the possitioning. Is there a better way to do this? Any help would be greatly appreciated!
Thanks,
James




//XML code from US Dams
<Name>PRIETO (1955, GRAVITY, 98 ft)</Name>
<Latitude>
<Value>18.183611</Value>
</Latitude>
<Longitude>
<Value>-66.852222</Value>
</Longitude>
<DistanceAboveSurface>0</DistanceAboveSurface>
<TextureFilePath>Add-ons\Earth\US Dams\icons\high.png</TextureFilePath>
<TextureWidthPixels>124</TextureWidthPixels>
<TextureHeightPixels>124</TextureHeightPixels>
<IconWidthPixels>12</IconWidthPixels>
<IconHeightPixels>12</IconHeightPixels>
<Description>River: PRIETO
Purpose: HYDROELECTRIC
Area: 20 acres
Normal &amp; Max Storage: 285 &amp; 565 acre-ft
Owner: PREPA (FORMERLY PRWRA) (PUBLIC UTILITY)



//Code from Add-Save-Points add-in
ic = new WorldWind.Renderable.Icon(m_name,m_attDi splay,m_lat,m_lon,m_Alt,plugin.ParentApp lication.WorldWindow.CurrentWorld,bitmap FullPath,10,10,m_url);

[withak]

It's a bug in the way icons are drawn. They are also only shown in the correct location when they are in the center of the screen. Put an icon in the center of the screen and then pan sideways and watch it slide around. The same thing happens with borders.

Setting the terrain exaggeration to zero is the only way to make the icons stay where they are supposed to.

[James_In_Utah]

Originally posted by withak@Feb 3 2006, 11:41 AM
It's a bug in the way icons are drawn. They are also only shown in the correct location when they are in the center of the screen. Put an icon in the center of the screen and then pan sideways and watch it slide around. The same thing happens with borders.

Setting the terrain exaggeration to zero is the only way to make the icons stay where they are supposed to.

Quoted post

Is this something that might be fixed in a future version? Even if it worked at exaggeration of 1.0 that would be good.
Thanks,
James

[withak]

Originally posted by James_In_Utah@Feb 3 2006, 12:10 PM
Is this something that might be fixed in a future version?

One would think so, but you never know.

[5of0]

Originally posted by withak@Feb 3 2006, 09:41 AM
It's a bug in the way icons are drawn. They are also only shown in the correct location when they are in the center of the screen. Put an icon in the center of the screen and then pan sideways and watch it slide around. The same thing happens with borders.

Quoted post

It's not a bug, more of a side effect. The icons are drawn in the air, so it shows them like they would be. But it has been addressed before, and I'm pretty sure it's on the dev's list of to-dos.

[James_In_Utah]

Originally posted by 5of0@Feb 3 2006, 01:24 PM
It's not a bug, more of a side effect. The icons are drawn in the air, so it shows them like they would be. But it has been addressed before, and I'm pretty sure it's on the dev's list of to-dos.

Quoted post

I just played around with this a little bit and it appears to me that the borders do not suffer from this problem like the icons do. Even if I turn exaggeration up to 5, the borders appear to stay above the same spot. They must be using different logic. Can anyone else confirm this?
Thanks,
James

[James_In_Utah]

Originally posted by James_In_Utah@Feb 3 2006, 06:09 PM
I just played around with this a little bit and it appears to me that the borders do not suffer from this problem like the icons do. Even if I turn exaggeration up to 5, the borders appear to stay above the same spot. They must be using different logic. Can anyone else confirm this?
Thanks,
James

Quoted post

Just as a test, I used the AddSavePoints plugin and put a point right at the intersection of two borders. As I tilted and panned, the point moved relative to the ground, but the borders did not. Can anyone point me to logic used to generate the state borders? I would love to be able to do the same thing from my own plugin XML or .CS file.
Thanks,
James

[PSK]

I don't think, vertical exaggeration is relevant for this. try zooming closer to the borders and you will see them move when you tilt the globe.