Improve the computation of polygons which include threshold wall attenuation regions.

[dev7355608]

Related Issues

• ClockwiseSweepPolygon can be self-intersecting #9953
• Support ClockwiseSweepPolygon polygons intersections between darkness sources and walls #10480
• Improve the computation of polygons which include threshold wall attenuation regions. #9531

Being in proximity of two walls with threshold attenuation at the same time can lead to unexpected results.

[aaclayton]

Comment from @Drental

What happened?

the view through the south window gets larger when my character approaches the left window, and then the south wall becomes fully opaque when stepping away from the attenuation distance.

What ways of accessing Foundry can you encounter this issue in?

• Native App (Electron)
• Chrome
• Firefox
• Safari
• Other

Reproduction Steps

What core version are you reporting this for?

11.300

Relevant log output

No response

Bug Checklist

• The issue occurs while all Modules are disabled

[Fyorl]

From #10038:

Originally reported by gambettv https://discord.com/channels/170995199584108546/1065764070680186930/1145761218854912020

ALL MODULES DISABLED? true
OS, Hosting, Browser (if applicable): Windows 10, Foundry 11 App
Short Description of bug: Wall Proximity Threshold Attenuation does not always behave as intended. Sometimes I can see further away through a window when I'm further away from it than when I'm closer to it, and normal Proximity is selected.
Screenshots do show some modules activated but it works the same even with everything disabled.

Adding on to the above: This is with all 4 windows set to 20 foot proximity, and if you measure per pixel from the center of the token, the distance I've revealed out all four windows is an equal distance from my token. This might be an error, I'm not sure. But it seems like it's related, in that once I get close enough to one of the windows to fully see out of it, you'll notice in screenshot 2 I can now see fully out all 3 windows. The 4th window I cannot see out at all. It seems like if you're close enough to one window, you can see out all windows you have any proximity threshold to whatsoever. There are windows all over this little block BTW, I'm just only able to see out a few of them depending on my proximity to them.

fvtt-Scene-test-Jf5CvZdN6top70Cy.zip

[dev7355608]

Originally reported by maxobremer https://discord.com/channels/170995199584108546/1065764070680186930/1218942438333218876

ALL MODULES DISABLED? True
OS, Hosting, Browser (if applicable): WIN10, local
Short Description of bug:
When a token is close enough to a wall that is set up as a window (proximity with threshold attenuation) it can see through any window wall that it is in range of (range here being within the range where the proximity threshold attenution would be in effect)

in the first pic you can see what the token should see when its that far away from a window, but in pic 2 it can see way more through the window on the left, because its close to the window on the right