Polygon fill algo?
ambassador at fourthworld.com
Sun Feb 14 18:12:35 EST 2021
Thanks, Monte. I checked it out, but unfortunately none of the options
handle my specific use case in the way I want (which is arguably an
unrealistic expectation, given that I need to have the fill region paint
over some vertices).
I also discovered what may be a bug, or at least a curiosity: after
playing with the nonzero and evenodd options, I tried to restore the
set the fillrule of the selobj to none
Message execution error:
Error description: Property: invalid enumeration value
Apparently "none" must be quoted. Has it always been that way? I've
seen a couple other cases in recent years where keywords I could have
sworn I'd used unquoted now throw errors until I quote them.
What rule can help us know when keywords must be quoted?
It also occurs to me: if there's no hint, adding "Hint:" looks like a
bug, even though it may not be (doesn't seem to be in this case). Maybe
I'll see if I can get some time to patch that...
Fourth World Systems
Monte Goulding wrote:
> Hi Richard
> Have you checked out the `fillRule` property docs?
>> On 15 Feb 2021, at 9:25 am, Richard Gaskin via use-livecode
<use-livecode at lists.runrev.com> wrote:
>> I was hoping to use a single polygon draw a box, using the old trick
of making discontiguous regions by adding a blank line between lists of
>> The results draws the lines as I expected, but the fill is
unpredictable, at least for me. Apparently the fill rules for a polygon
cause it to not fill some regions, even when discontiguous.
>> I guess I'll have to use separate objects, but I was wondering if
anyone has a description of the polyfill rule(s), or better, a way to
coerce discontiguous polygon regions to always be filled.
>> Richard Gaskin
>> Fourth World Systems
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