Center circle snap works sometimes

valkama

If i draw a circle and I dont care about its radius i can go back to snap to the center of the circle. But if i input a distance for the radius when drawing a circle, the center snap no longer works? Am i doing something wrong?

TIG

Works OK for me... select it and get Entity Info - is it still a circle - has it 'exploded' ?
Try changing it's radius in the dialog - can you snap to its center then ?

valkama

Hello TIG

It does not tell me if its a circle in the entity info box. It just says face, then the square footage of the area. It does this even on the circles that i am able to snap too. How do you go about changing the radius via the dialog box if i already made it? Thanks for your help

TIG

@valkama said:

Hello TIG
It does not tell me if its a circle in the entity info box. It just says face, then the square footage of the area. It does this even on the circles that i am able to snap too. How do you go about changing the radius via the dialog box if i already made it? Thanks for your help

Don't pick the face, rather pick the 'edge' - that's actually the 'circle' - if you highlight just that then the radius and segments should be shown in Entity Info (similar for arcs and polygons) - usually can be changed there - but 'arc' must not be connected to other non-coplanar geometry...

valkama

Wow! THanks for that TIG. This will help a lot in the future. The snapping still did not work but this now at least provides me with a work around.

Thanks again

Gaieus

If you enable utilities, extensions or whatnot under your preferences > Extensions, you will get a menu item "Point at center" in the context menu for circles and arcs, too. Sometimes it can take a little while to find the center inference (especially with complex geometry around) but this places a guide point into the center and you can use that for inferencing easily.

thomthom

Chris made a plugin to calculate the centerpoint for exploded arcs/circles.

tomsdesk

If you hover over an edge of the circle or arc for a moment, then move to the center, it will pick it.

Jean Lemire

Hi folks.

To find the center of an exploded circle here are a few tricks.

If the circle has an even number of segments, draw a line from one side to the other, trying to eyeball a diameter. Using a correctly orbited view may help. The center of this line is the center of the circle.

If the circle has an odd number of segments or if you are unsure about tracing a correct diameter with a circle with an even number of segments, draw to perpendiculars from the midpoint of two segments. Their intersection is the center of the circle.

Just ideas.

thomthom

Forgot the link to Chris' plugin: http://forums.sketchucation.com/viewtopic.php?f=323&t=18963