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Submitted byMiquelon10-25-201606:43 AM
Status:
Archived
not project entities when apply constrains
When we use the coincident constraint between end point of line and center point of vertex (or other). Inventor always project the entity to contains this point... this is not so good if I won't use this entity... I only want the projection of point...
@Miquel, there seems to be something wrong with the video. Would you consider making a demonstration video using Autodesk's screen-capture software, Screencast? It makes it much easier to share screen videos on the Autodesk forums. You can post a link to it here once it's created, or even embed it in a comment here with the "Embed" link provided after you create your video. You can download Screencast here: Autodesk Screencast.
Thanks for the video. I see what you're describing. I have to say I think Inventor is doing the proper thing here. A few comments:
1) That midpoint isn't a real geometric feature, so projecting it by itself would be a bad idea. That midpoint is an imaginary point which can be found based on an actual, real geometric feature, i.e. the edge that Inventor projected as a Sketch line. Before you can have a midpoint, you need a line. So in order to make your Sketch stable, Inventor did the right thing and brought in the source line and then used that to provide you with the midpoint you requested. This is the proper, robust way to project a midpoint.
2) If you want, you can first make that midpoint a real geometric feature by creating a Workpoint upstream from your Sketch and projecting THAT to your Sketch. This will bring in just the midpoint into your sketch. And this is proper technique because you're first defining the midpoint based on real geometry, and THEN projecting it. You can do something very similar with sketches. If you had an upstream sketch with a line whose midpoint you wanted to project, you couldn't JUST project the line's midpoint either, UNLESS you went into your upstream sketch and created a Sketch Point attached to your line's midpoint. Then you could project that Sketch Point by itself just like you can project the Workpoint I discussed above by itself.
3) Projecting in the lines does nothing to hurt you at all. There's no reason that having those lines in your sketch should hurt anything. You can convert them to Construction lines and then they shouldn't cause any undesirable effects as long as you know what you're doing.
So the short version of all that is: The lines shouldn't hurt anything, but if you really don't want them, you can project just the midpoint by first defining it as its own geometric feature using a Workpoint.
But trying to project just the midpoint without first defining it as its own geometric feature would be a bad idea, because it's not a real feature--it's an imaginary feature which can be found BASED ON a REAL feature. Projecting it by itself would lead to confusion and possibly even an unstable model down the road.
So hopefully either converting the lines to Construction or using the Workpoint method will be of use to you. Hope that helps!
@DRoam I understood all points that you wrote. And I'm aware. But in my opinion, a mid point into one vertex yes should be projected into sketch, because that one is a geometrical point in a vertex (and exist)... I don't need the line, of course I can change to contruction line... but is not my design intent.
I do see your point and understand where you're coming from. Technically, the midpoint is a "real" point that could be projected and Inventor should theoretically know where it is even if the upstream geometry changes.
I actually just checked and one of my main concerns isn't an issue. I thought it would potentially be difficult for someone coming behind to tell where the point was projected from. But Inventor has a nice feature where you can hover over the Projected "glyph" in a Sketch for a projected entity, and Inventor highlights the source of that projected geometry. So that would make it easy for someone coming behind to tell where the midpoint was projected from.
Given that, I'm inclined to agree with you 🙂 even though the midpoint isn't a real geometric feature, it is a real point with a real definition that can be determined and traced back. So it wouldn't necessarily be illogical or even bad practice to just project the midpoint, especially since its source can be traced easily. Vote given 🙂
Thanks for sharing your Idea. We use this forum to guide product development and help users in the best way we can, based on voting. We occasionally merge Ideas or archive old ones to keep the forum working properly - it ensures there is room for people to review new Ideas and that the most relevant and meaningful ones can gain votes.
We’re archiving this Idea because it's been on the board for well over a year and hasn't received many votes from the community. If you want to raise it again and try to gain more support, you're welcome to do so. We’ve found that
pictures and mock-ups can help get concepts across and win more votes from other users. If you have questions or see a connection between this Idea and others, let us know.
- Inventor product team (Inv.idea review)
