Support for holes in polygons

[GoogleCodeExporter]

Is it possible to define polygons with holes in Polygonzo? If not, would it be 
possible to add this feature?

I am working on a visualization with overlapped / included areas.

Original issue reported on code.google.com by timo.wes...@gmail.com on 4 Mar 2011 at 2:06

[GoogleCodeExporter]

Let me guess: Counties and Independent Cities in Virginia? :-)

I also need those to work for a census map project I'm doing for Google right 
now, so they will be fixed soon. Thanks for alerting me to it.

Original comment by m...@mg.to on 4 Mar 2011 at 7:09

• Changed state: Accepted

[GoogleCodeExporter]

It's actually the capital region of Finland I am visualizing. There is one town 
here which is completely surrounded by another one.

Original comment by timo.wes...@gmail.com on 5 Mar 2011 at 8:15

[GoogleCodeExporter]

I'm taking a look at this now.

There will probably be one requirement imposed by Canvas: any inner polygons 
have to run in the opposite direction from the outer polygon. For example, if 
the larger town boundary runs clockwise, the enclosed town's boundary has to 
run counterclockwise.

Do you think that will be a problem?

Original comment by m...@mg.to on 15 Mar 2011 at 3:10

• Changed state: Started

[GoogleCodeExporter]

I am sure I can easily change the polygon data to have a reserved point order. 
It shouldn't be a big problem.

Original comment by timo.wes...@gmail.com on 15 Mar 2011 at 1:51

[GoogleCodeExporter]

Sorry I didn't add this sooner, but polygons with holes are now supported. I 
don't have a test case, but you can see it in action on the Turkish election 
map:

http://election-results.googlecode.com/hg/turkey2011/gadget/turkey-results-gadge
t.html

Roll the mouse over Ankara 1 and Ankara 2 just left of center - part of Ankara 
2 is an enclave inside Ankara 1.

Original comment by m...@mg.to on 14 Jul 2011 at 3:30

• Changed state: Fixed