Picking

[Pipo]

mcc => you have to download the last source from aerosol's svn (http://code.google.com/p/aerosol/source/checkout)

[jim]

Picking seems to work well so far
My problem is that there is no obvious means of it telling you that no shape was picked, i.e. so that i can tell a shape no longer has focus.

[slembcke]

Picking seems to work well so far
My problem is that there is no obvious means of it telling you that no shape was picked, i.e. so that i can tell a shape no longer has focus.

Well you have a few options depending on how fancy you want to get. You could save only the last object passed to the callback (if you only want one/none). You could make a list of the objects in the callback (if you want many/none). If you want to get real fancy, you could use setjmp/longjmp to break out of the callback loop on the first object returned.

A better solution would be not to use C.

[jim]

I made SPACE_PointQuery return a boolean indicating if a shape was picked, fairly straight forward.

Cheers,
Jim