Circle Becomes Arc When Reopened

freddig

Hi All,

Has anyone had this strange occurance with Circles. If I "push" a Circle, when I save and reopen the file the Circles (either side of the hole) have become an Arcs (see right side of attached pictures). The circle on the left stays a circle. I've had no problem with this yet, and only noticed it after my "Select Circle Entities" plugin didn't work!

Entity (On Right) is Circle Before Reopen

Entity is (On Right) Arc After Reopen

Gaieus

Interesting. I still have them as circles:

thomthom

I can verify this behaviour on XP Pro - SU7 Pro.

Gaieus

How? See my screenshot; I don't have it. I tried to make the hole two different ways;

punching the hole on a flat face and then PP'ing the surrounding rectangle
first making the box then drawing the circle and PP'ing it back to the bottom
Had the same result both times.

thomthom

@gaieus said:

How? See my screenshot; I don't have it. I tried to make the hole two different ways;

punching the hole on a flat face and then PP'ing the surrounding rectangle

first making the box then drawing the circle and PP'ing it back to the bottom
Had the same result both times.

I made a square.
Drew a circle on the square - deleted the circle face
Copied the square with hole in next to itself
Push-Pulled Up (Entity is Circle at this point)
Saved and closed the file
Reopened the file (Entity was now an Arc - The circle that wasn't push-pulled remained a Circle though.)

remus

I can reproduce it as well, SU7 vista 64.

Gaieus

Sorry guys,although it was written in the first post,I didn't save > close > reopen. True, I can also reproduce it this way (in fact,you don't even need to copy the whole thing just do the PP)

thomthom

The copy was just to reference to see if it happened to all circles.

freddig

So is this likely to cause any problems? My only issue so far is my "select circles" plugin (just got to remember to "select arcs" instead).

thomthom

Well that's strange:

Poking around with the API:
While the .start_angle is 0 for both - but the .end_angle is different:
Original Circle


Sketchup.active_model.selection[0].curve.end_angle.radians
> 360.0

ArcCircle


Sketchup.active_model.selection[0].curve.end_angle.radians
> 720.0

For some reason it loops around itself twice! o_O

Jim

Could be because an Arc is 12-sided by default and a circle is 24-sided?

thomthom

Dunno. But it's odd that a Circle entity turns into an Arc. Or in reality according to the API - Circles are ArcCurves that's 360 degrees.

thomthom

FYI: I added support for bugged circles in my Selection Toys plugin. http://forums.sketchucation.com/viewtopic.php?f=180&t=14975 If you select all entities and then Right-click->Select Only->Circles it'll select all the circles - even those that SU claims are arcs and incorrectly reports as 720 degrees.