No quadrant snap i Sketch

[erik]

A lot of snap functionality has been added to both Drawing and Sketch which is great. The only thing I can't understand is why is there no quadrant snap i sketch mode? It is possible to snap dimension etc. in Drawings but not in a sketch.

I know one can can get around it when snapping to circles, but if let's say an ellipse is rotated then it is not possible to snap to its quadrant points horizontal and vertical.

There must be a good reason for this, since so much snap functionality has been implemented.

Cheers,

Erik

[wersy]

In sketch mode there is a snap on circle and ellipse.

[erik]

Yes, one can snap to circles and ellipses, but not to the quadrant point. (Farthest to the top, bottom, right and left)

At least, that is what I am experiencing..

[HughesTooling]

There are a few snaps missing and because the workaround are quite easy I don't think they're a high priority. For example a line perpendicular to a circle can be done with a coincident constraint and quad points on a circle with a vertical\horizontal constraint. But the workarounds don't work for all situation, like splines and as you say an ellipse. If the ellipse is drawn in Fusion it will have construction lines where the quadrants are, if you delete these the ellipse is pretty useless and you'll have problems constraining it.

Not sure easy workarounds and other improvements with a higher priority is a good enough reason for the missing constraints but I think that's all it is.

Mark

[wersy]

Do I miss something?

Even if the ellipse is turned it still have snap ponts on its quadrants.

Am I wrong?

[HughesTooling]

I said if you delete the construction lines the ellipse is pretty useless.

Mark

[wersy]

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@HughesTooling  schrieb:

I said if you delete the construction lines the ellipse is pretty useless.

Mark

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Oh yes, I didn't see that.
I didn't notice it before, but is there a reason to delete the construction lines?
If you know that you need the quadrant points, you can set points before deleting the construction lines.

But of course, it would be better you don't need to do it.

Michael

[HughesTooling]

I didn't want to go into guessing all the situations @erik might get into but try trimming an ellipse, try importing one from another cad program, try projecting one from a solid, etc, etc. Lots of way to end up with an ellipse that Fusion can't do a lot with.

Mark

[wersy]

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@HughesTooling  schrieb:

I didn't want to go into guessing all the situations @erik might get into but try trimming an ellipse, try importing one from another cad program, try projecting one from a solid, etc, etc. Lots of way to end up with an ellipse that Fusion can't do a lot with.

Mark

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I agree.
This is a point for the Idea Station.

Michael

[erik]

Thanks for the answers @wersy and @HughesTooling!

I realized I made a huge bummer, it is perfectly possible to snap to the quadrant points of an rotated ellipse using the same method as with the circle.

But it is this method I am a bit sad to be forced to do. In my workflow I often have to set the total height or width of a sketch or sketch object, and having to either draw lines with a horizontal, a coincident and a tangent constrain or a rectangle with tangent constrains seems like a bit too much (I know it is necessary on rotated ellipses like the image below.

2 lines            Rectangle

- Erik

[HughesTooling]

I tried picking quadrants on a rotated ellipse in Rhino and ZW3d and they pick the rotated points not the height and width like you're after. Not sure if other CAD programs do any better. 

Mark

[erik]

I don't think so.. AutoCAD does the same.

- Erik

[HughesTooling]

Wish I understood Python scripting better with Fusion. Looking in the API everything's there to get a bounding box from an ellipse but there are not enough sample scripts for me to get very far with Fusion. Should be easy to get the bounding box draw a construction rectangle and probably add the constraints.

Mark