3D Cross Section plugin and viewer

[patmurris]

Here is version 1.4 beta 3 of the 3D Cross Section plugin (Zip 1.1M).

UPDATE 2007-02-23 : Version 1.4 released - see this post on page 3

It allows to select a square area of terrain and view the 'cut-out' in a separate 3D window - the terrain viewer.



The 'terrain extraction' and SRTM .bil export plugin has been written by withak - Thanks a lot

The 3D window is the 'Mini terrain viewer' I've been working on at times, and made better for the occasion. It can be used outside WW. You can load previously saved cross sections, and even view the SRTM tiles in WW cache by dropping them over. You can also apply different color schemes...

Install

1. You need WW 1.4 (as of today).

2. Unzip in your WW Plugins directory. That should add a folder named '3DCrossSection'.

3. Start WW and the new plugin should be listed in Plug-ins->Load/Unload.
Select the plugin and click 'Load'. It should turn green.

4. Once loaded, it becomes an option in the Plugins menu.


Usage

1. Navigate to the place you want to cut out - with a vertical view

2. Click Plugins / 3D Cross section... to select the area.

3. Adjust the selection size and heading, move the terrain and recenter...

4. Enter a file name with no extension Ex: "My_Terrain", enter a short description

5. Click 'View selection' and be ready to wait a bit... (10... 20 sec)

6. Once the terrain viewer comes up, you can examine the terrain section as in WW
and change the color schemes by using the Textures and Sides menus.

Some keyboard controls (more here) :

• Shift + / - : change camera field of view (zoom)
• Ctrl + / - : change terrain vertical elevation factor

Hawai - cut out from World Wind with vertical exaggeration



SRTM level 10 .bil file from WW cache - no vertical exaggeration

This is a beta... still some issues to solve. I hope to add textures from WW layers too and maybe plot 3D points from imported data (earthquakes...).

BTW : According to "NASA/NGA MEMORANDUM OF UNDERSTANDING" regarding SRTM data, they are freely redistributable. Thanks Bull for the link.