View Full Version : Conditional toggle not eval'ing


Electrofirma
11 November 2003, 06:44 AM
Hi all, here's one that's got me stumped...

eval("polyOptions " + (`polyOptions -query -fullBack` ? "-backCulling" : "-fullBack"));

Even though "polyOptions -query -fullBack" run seperately returns 0.

It always evals to "polyOptions -backCulling".

Any insight is appreciated.

Electrofirma
11 November 2003, 07:05 AM
I may have the problem figured out, just don't know how to fix it yet.

I tried an explicit cast of the query results to int, and it errored because the query is returning an int[].

Electrofirma
11 November 2003, 08:23 AM
Okay, never mind...

I realize now that it is a bigger issue than I realized.

i.e. I thought the int[] was created because I could query more than one attribute. It is actually created to give a list of attributes for all selected options. Or all objects if -gl is specified.

I need to change my strategy :(

Electrofirma
11 November 2003, 09:06 AM
OK, I try this...

int $myToggle = 1 - $myToggle ? eval(`polyOptions -gl -fullBack`) : eval(`polyOptions -gl -backCulling`);

It executes the eval for the toggled value of $myToggle, but the value of $myToggle isn't changed.

I can do...

int $myToggle = 1 - $myToggle;

and it toggles nicely back and forth from 1 to 0, and returns it's value. How come the conditional statement seems to toggle the value, but not save it back to the variable as the statement says it should?

Electrofirma
11 November 2003, 09:19 AM
Bingo!

int $ef_bfTogl=($ef_bfTogl=1-$ef_bfTogl)?eval(`polyOptions -gl -fb`): eval(`polyOptions -gl -bc`);

There's what I was shooting for... a single line that toggles backface culling. I don't like using a variable to keep track of the display state, but I can sleep now.

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