Move a vertex

caddict · 2 Dec 2007, 04:50

Is it possible to move a point/vertex in SU?

For example, to extend a line, one end point could be moved to the new position.

If not, how do you extend a line, without adding another line segment?

boofredlay · 2 Dec 2007, 04:51

To move the end of a line, first make sure nothing is selected. With your move tool, just click the endpoint and move it.

If you are not on an axis, red green or blue, you might need to create a construction line to follow. Do this by using the tape measure tool and "draw" along the line and you will see a construction line show up.

Make sense?
Hope this helps.

caddict · 2 Dec 2007, 04:52

Thanks Eric

that's real easy. I've been using SU for a while now and I didn't know that. I probably learned it once and then forgot.

I see it also works with vertices of 2d and 3d objects. And with lines as well. Nice.

SchreiberBike · 2 Dec 2007, 04:53

Thank you caddict. Thank you Boofredlay.

I've been sketching up for about a year and I hadn't realized this was possible. I was stuck on the idea that since you can't select an endpoint or vertex, you couldn't move one. Now I can go back and look at some projects I had set aside because I couldn't figure out how to deal with them.

That also explains how other people have been posting things which look impossible. They just knew a trick I didn't.

caddict · 2 Dec 2007, 04:53

Well now I don't feel so bad!

I had already looked through the SU help files but now I look and there it is under Move Tool >> Stretching Geometry

very useful though

Gaieus · 2 Dec 2007, 04:54

Now guys imagine the impossible!

Just draw a line from the origin (important - this is the only place without geometry but still "inferencable") to anywhwre.
Then grab the "outer" endpoint and move it back to the origin.
You will end up with a single endpoint. A SINGLE endpoint.

If you go to the "statistics", it will tell you that you have an edge (it does not list just points), but try to fix the problems; it will tell you that the starting and ending points of that edge are the same and will purge the model by deleting it.

Lovely, I believe...

caddict · 2 Dec 2007, 04:54

Yes that's good.

At least we are being protected from the impossible!

TIG · 2 Dec 2007, 10:54

You can move an Edge's Vertex with Move, as long as nothing is pre-selected - use inferencing and shift-locking to get the end to finish up where you want it to be...

You can also move an Edge's Vertex by using Scale on the Edge (tip: you need to temporarily draw a scrap bit of new Edge off the side of the one in question, so that it becomes 'Scalable' [then simply delete the scrap bit afterwards and the Edge is back as one piece]; pull the end you want to where you want it be be (tip: draw a construction[guide] line first if there's nothing else to infer to to pull it to).

You can also change a Selected Edge's length by using 'Entity Info' and typing in a new overall length for it, BUT the Edge must have at least one 'free' Vertex - i.e. one that's not connected to another Edge; also if you want to increase an Edge from its 'start' rather than its 'end' you might also need to Move the whole Edge too...

caddict · 7 Dec 2007, 05:21

Thanks for that TIG...all useful tips

Coming from a standard CAD background I always felt frustrated that I couldn't just click LINE>EXTEND. But now I see there are a number of ways to do that!