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Knockout Border Enlargement Factor

PostPosted: Wed Sep 05, 2018 5:16 pm
by joshhuggins
Can someone refresh my memory, what does Text Knockout Enlargement actually relate to?

Re: Knockout Border Enlargement Factor

PostPosted: Wed Sep 05, 2018 5:57 pm
by David A. Giesselman
joshhuggins wrote:Can someone refresh my memory, what does Text Knockout Enlargement actually relate to?

It allows you to control the size of the Knockout rectangle around the text. When set to 1.0, it will match the size of the rectangle shown when the display of text is toggled Off. That itself is defined by the font's definition of the cell size of a character which typically includes ascenders and descenders. Although, not all do.

Re: Knockout Border Enlargement Factor

PostPosted: Thu Sep 06, 2018 2:09 am
by joshhuggins
Sorry Dave, I was not too clear in my question. I know what it does, I was wondering what the enlargement factor was related to. The text size or if it's a percentage or something else. Does Text Scale factor into it? I think what is throwing me off is what I am seeing. I figured it would be the same as the text boundary like you mentioned when the text display is turned off when the enlargement is set to 1, but that is not what I am seeing.

In the attached image the purple is the extents of the text when the display is off. The cyan is the KO border enlargement X/Y set to 1. The yellow is the KO border enlargement X/Y set to .9 which doesn't seem to size relative/equally and doesn't seem like 90% of the original border which is what I thought it might be.

The main reason I was trying to figure this out is sometimes a value of 1 is too big and as I try to tighten the KO border up by using something like .9 sometimes it seems like it's not centered on the text, and sometimes crops the text. Just trying to understand it a bit more. Thanks Dave.

Re: Knockout Border Enlargement Factor

PostPosted: Thu Sep 06, 2018 3:38 pm
by dmartens
Doesn't look like it relates to anything. The difference between the .9 and 1 enlargements do not match at top and bottom or right and left. There is a larger increase on the left and the bottom. I don't use KO borders but was curious if it was that way for the font we use (arcwy2hc). And it is. Hope you can accomplish what you are trying to Josh.

Dan