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Attachment problem at the endpoints

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Attachment problem at the endpoints

MizzardHp
2 posts
Hello everyone!!!I recently started using LibreCAD, but I've encountered a problem that I can't solve:

I created a curve using the option:

Center, Point, Angle.

Then I drew a curve with an absolute center, point at 490mm, and an angle of 13°.

The problem occurs when I try to connect a line at the top end point.

If you don't zoom in, the problem is not noticeable:



if I zoom in, you can see that the line hasn't connected to the peak of the curve:



I also tried to draw other curves of various sizes but I have the same problem...

I tried to check the snaps and various properties but the problem remains the same...

Is there a way to force the exact point of the endpoint of the curve?
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Re: Attachment problem at the endpoints

LordOfBikes
Administrator
1126 posts
Welcome MizzardHp!

If you have used Snap Endpoints, then the entities should be mathematically connected.
You can check this when you create a Polyline from existing elements.
Select both entities and then activate the Polyline tool. When the result is one continuous entity, their endpoints matched.

You can probably use the plugin List entities too. Select both entities, then activate the Plugin and hit ENTER. In the entity list you should see endpoints of both entities to compare them.

Or, just for testing, connect the other ends with a line too and try to apply a hatch to this closed area. If the hatch is ok, the entities are connected. Otherwise the Hatch tool prints the gap coordinates and length in the command history box.

This might be just an inaccuracy from the underlying drawing library. See my post https://forum.librecad.org/Bug-with-Line-and-Circle-Intersection-mismatch-on-snap-Intersection-tp5717031p5717032.html

If there is indeed a gap between the entities, you can connect them with trimming.
In this case it might be a matter of drawing order. This always depends on the given constraints and entity types. I often draw a circle instead of curves, then divide it on intersections and delete the unwanted part.

Armin
investing less than half an hour into Search function can save hours or days of waiting for a solution
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Re: Attachment problem at the endpoints

dxli
2025 posts
We have fixed arc drawing in 2.2.1 and up for inaccurate arc drawing. However, ellipses still need to be fixed