🚀 go-pugleaf

In article <1989Dec7.185640.15880@elroy.jpl.nasa.gov> eto@spacely.Jpl.Nasa.Gov (Edward Olsen) writes:
>I need an application which draws a globe with latitude and longitude circles
>as seen from a specified viewpoint.  EarthPlot 3.0 would be ideal if I could
>disable the drawing of the continents.  Does anybody know of such an
>application, or how to disable the continents in EarthPlot (using ResEdit)?
>
>						Ed Olsen

You said ResEdit would be OK, so here goes...

Open up a copy of Earthplot 3.0 with ResEdit.  Look at CODE resource #2.  
Use the FIND command to locate $6C8A, then change it to be $FFFF.
Do this twice (i.e. there are two instances of $6C8A).

This should elimate all landmass drawing.  Now if you turn on lat & long
lines you should get what you want.

[If you can't find $6C8A look for $0C47 followed by large integers (ignore
places with it followed by small numbers like 000B & 0012). Replace the
large integer following the $0C47 with $FFFF (twice).  I checked this
patch on a (unreleased)  post 3.0 version, but I think $6C8A should have 
stayed constant -- it's the number of coordinate triplets in the edat resource].

If you (or anyone else for that matter) is interested, the sources are in
the Public Domain and I can send them to you.  3.0 is written in Think C.
I haven't compiled it in ages so it may need some tweaking to work with the
latest greatest Think C.  It also uses a "programmer's helper" subroutine
library called TSkel from Paul DuBois.  Again, I haven't used TSkel in
years, but it should still work too without much trouble...]

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