Full Version: Midpoint snap on curve not working?

Hi

I was wondering if the midpoint snap was supposed to work on a curve, because I cannot get it to work.

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Hi 3dcnc - midpoint snap is only intended to work on lines and arcs.

It tends to be a time consuming calculation to find the true mindpoint of just any wiggly curve, so in order to have good interactive snapping performance MoI does not try to calculate those.

But it is possible to generate a point marker at the midpoint of a curve though, which you can then snap to.

To do that, draw a point object (Draw curve > More > Point) at the start of the curve, then select that point, run Transform > Array > Curve and pick the curve as the path curve for the array. Then for the array options set Item count = 3 and push Done. There will now be a point object at the halfway distance along that curve which you can snap on to.

- Michael

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Not on a curve, but on an arc, line, ... ;)

If you have the "Show edit Frame" enable you will see the middle of this box for transform resize...
but Michael answsered before me with a nice trick :)

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Thank you for that . That was quick

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Hi Pilou,

> If you have the "Show edit Frame" enable you will see the
> middle of it for transform resize...

That's the "center of the curve's bounding box", which is different than the "midpoint of the distance as traveled along the curve".

Here's an example of that kind of midpoint:



- Michael

Image Attachments:
pilou_midpoint.jpg 

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Hi Michael,
In my Cad/Cam package, the points tool has some options... "Point on entity by Distance/Percentage." It's very handy.. If you could look into this, I think it could be a great addition to the point command.

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Hi Burr, I was kind of thinking in the future that there could be some option for that in an extended properties dialog box for curves...

- Michael

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< That's the "center of the curve's bounding box", which is different than the "midpoint of the distance as traveled along the curve".

yes :)
If for that I that I had rectify "of this box" but as always you will so speedy that you have seen my previous version :)

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