How to query the number of polys on the current selected object?

[siproductions]

Took me a sec to find this.

polyEvaluate -f objectName;


Cheers,
Simon

[GeoffClark]

Simon,
Thanks for the reply. I, too have seen the polyEvaluate -f command, but the problem with it is that its return type an array, not a single integer value.
Perhaps I'm just needing a pointer on how to phrase the while statement so that the polyEvaluate command is properly evaluated. It's all in the syntax, I think.

while (`polyEvaluate -f $selectedObj[0]` > 6)
{}

does not work because it is an array. How do you have the first index of the polyEvalute command be returned in the while statement, so that the result is evaluated on each loop interation?

Thanks,
Geoff

[dr.rastaman]

Hi,

try it like this:

int $numFaces[] = `polyEvaluate -f $selectedObj[0]`;
while( $numFaces[0] > 6 ) {
... do something ..
}

Cheers
Rico

[GeoffClark]

Rico,
That , too , had occurred to me. That code becomes an infinite loop , because $numFaces[] never gets re-evaluated. So the number of faces never drops. That's why I wanted to backquote the command in the while statement.
If you put the PolyEvaluate command within the loop, then the variable is never initiated for the while statement. It's a tricky issue.

[siproductions]

This should work: There's probably a better/cleaner way of recasting the array to the int but it gets the job done.

Cheers,
Simon


$Array = `polyEvaluate -f pSphere1`;
int $test = $Array[0];
$i = 0;
while ($i < $test)
{
print $i;
$i = $i + 1;
}

[claydough]

try size.


with a single or multiple poly object selection fer example:

{

string $meshSelections[] = `filterExpand -sm 12`;

for ( $m in $meshSelections ) {

// size the number of faces ( expanded )

int $numberOfPolys = size(`filterExpand -sm 34 -expand 1 ( $m+ ".f
" )`);

print ( $numberOfPolys+ "\n" );

}

}





while...

string $meshSelections[] = `filterExpand -sm 12`;

while ( size(`filterExpand -sm 34 -expand 1 ( $meshSelections[0]+ ".f
" )`) > 1) {
print ( size(`filterExpand -sm 34 -expand 1 ( $meshSelections[0]+ ".f
" )`) + "\n" );
// insert non-infinite looping while logic here
}

[claydough]

same with non infinite looping while logic fer example:
( safe evaluation proof )



{

string $meshSelections[] = `filterExpand -sm 12`;

while ( size(`filterExpand -sm 34 -expand 1 ( $meshSelections[0]+ ".f
" )`) > 1) {

int $currentFaceSize = size(`filterExpand -sm 34 -expand 1 ( $meshSelections[0]+ ".f
" )`) ;

print ( $currentFaceSize+ " is the number of faces currently on the mesh \n" );

string $lastFace = $meshSelections[0]+ ".f["+ $currentFaceSize+"]";

delete $lastFace;

}

}

[Robert Bateman]

Just get the size of the faces array.

getAttr -s ($transform+".fc")

or...

getAttr -s ($mesh+".fc")

both work (assuming the transform has a child mesh).

[claydough]

Just get the size of the faces array.

getAttr -s ($transform+".fc")

or...

getAttr -s ($mesh+".fc")

both work (assuming the transform has a child mesh).



Nice! Thanks Robert

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