AutoCAD .NET :: How To Extrude Imported DXF Along Polyline
Oct 21, 2012
I have region is in external dxf file,how to extrude it along polyline?I can't get region after using dxfin method
Database myDxfDb = new Database(false, true);myDxfDb.DxfIn(filename, logFilename);Matrix3d dxfTrf = Matrix3d.Identity; _ThisDatabase. Insert(dxfTrf, myDxfDb, true);ThisDatabase.UpdateExt(true); myDxfDb.Dispose();acTrans.Commit();ObjectId id = AcUtils.EntLast();Entity _ent = (Entity)acTrans. Get Object(id, OpenMode.ForWrite);
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Jul 19, 2012
I've had a problem for a while now trying to extrude a 3d polyline into a 3d solid. The polyline is on different planes which is one cause of why it won't work. Instead of extruding into a solid it only does the sides making it a mesh rather than a solid. If its on one plane I know it will work.
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Feb 6, 2013
I draw a closed polyline and then I extrude it. But when I want to see the 2d plane and hide the 3d version I cannot go back as the polylines are extruded and everything is disappearing. Should I draw a second poly over the first, then create a new layer, name it for example 3dpolywalls ? Is this the most common technique? Or there is a more efficient way ?
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Nov 20, 2008
I'm trying to model a 3d leadscrew. How can I extrude a 2d closed polyline in a straight line while at the same time twisting it (360° twist for every 1.5" along the path). I've tried loft, sweep, extrude all using the helix as a path. When I can get a result, it ends up being a corkscrew.
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Oct 9, 2012
I am not able to extrude closed polyline shapes. I get the following message:
Cannot create solid from open curve.
Cannot sweep or extrude non-planar objects.
Unable to extrude the selected object.
Other folks have opened my drawing – some can extrude, some get the same or similar message. I’ve tried re-building the shapes to extrude. It worked with one thing this morning and now it won’t extrude again.
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Aug 16, 2013
Im still new to Civil 3D and i would like to know how to connect inported points using 3D polylines. I imported my points from Excel in a PNEZD format. How do i get the 3d poly line to snap to my points so I can Connect them? someone mentioned using a feature line to connect the points but im not sure how or what that would do.
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Mar 7, 2013
Previously i`m using version 2009 and importing Google earth image and surface works fine. However, recently i tried with version 2010 and i`m having some problem here (imported surface / contour seems ok but the image is too large like 3x or 4x). How to solve that?
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Nov 6, 2013
Is there a way, when you are drawing a polyline, to have the tooltip box show the cumulative length of the polyline, rather than the length of the current segment being drawn?
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Jun 7, 2012
I would like to take all the vertices out of a multiple-vertices polyline so that it reduces to just its start and end points, can this be done?
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Sep 21, 2013
Due to modeling purposes, I need to convert a 3D polyline to a spline. What I have been doing is:
- change polyline fit/smooth to cubic from properties
- convert polyline to spline by typing spline -> object
- method -> fit from properties
You can see the original 3D polyline (green) and the resulting spline (magenta) in the attached drawing.When I zoom in and measure the distance between the two entities at different points along them, at some points the perpendicular distance exceeds 5 millimeters, and I want to ensure the deviation remains under 1 millimeter or even less.
I know I can change the knot parameterization of the spline, and this does work at some locations, but the difference increases at others.Why is there a 5.6 mm difference between the spline fit point and 3D polyline vertex, as measure in the attached drawing?
Now, I can go and manually stretch the fit point to coincide with the vertex. Also, I can add fit points between existing ones to drag the spline closer to the original 3D poly.
However, some of my polys are really long, and it is very time-consuming to do this manually while measuring points along the entities to make sure the distance stays small enough.
how to automate this process? For example a lisp that would maybe take the original vertex points, add say maybe 3 (not too many) new ones between them, and then generate a spline while making sure the deviation is less than the set value of 1mm? I am using AutoCAD 2013.
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Nov 11, 2013
I've been working on a custom polyline object, and I've got it functioning!!Having said that, I plan to run its creation around picking a point for bounary selection.
(Other than trying to step through every vertecies) is there a technique I can thow the polyline data from a traceboundary result into my custom object? I've been trying to add the polyline from traceboundary to my object BEFORE it's added to the transaction by the way...I assume that's right, since I want to put it's data in my custom object then add my custom object to the transaction instead.
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Jun 29, 2013
I want to convert a 3D polyline to 2D polyline.
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Sep 16, 2011
Is there any way at all to draw a new polyline - from the endpoint of another polyline, and have it automatically join as one polyline from the existing section??
I know this can be done via PEDIT, but its so laborious and soo many clicks, and I have alot of segmented Polylines that I need to consolidate when I draft.
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Mar 22, 2012
Any way I can align a new polyline to a reference polyline (orig polyline).
The 2 polys will be generally the same length, however, the number of vertices will differ.
Also I need to mantain the same distance between the vertices on the new poly and the new and reference poly won't follow the same direction.
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May 18, 2011
How do you find 'if' a polyline is inside another polyline?
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Mar 2, 2012
How do you convert a closed Polyline to 2D Polyline? CONVERT does not work in reverse.
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Jun 25, 2008
I have 2D polylines and want to convert to polylines, but to no avail. Tried to 'spline2pline' this line, but ACAD refuse to select it.
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Nov 3, 2011
I have a dwg that someone imported and I cannot find where this object is. I have tried searching the database with DBLink, Ideate BIMLink and I have gone into every view to no avail. I also used the reviTTools add-in which says there are no drawings in the file. Am I dealing with a corrupted file? I am super OCD and this is in our Template which makes it an even bigger problem.
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Aug 10, 2012
I can do this in AutoCAD Map but I have my doubts. I will explain in ESRI GIS terms (this is what I am familiar with) and I hope you can tell me if I can do this in AutoCAD Map. In ESRI ArcMap I can select a line and I can hit a Select by Location button. In this window I can select all of the objects that intersect my selected line. Then I can delete them or export them etc.
In AutoCAD Map I have a polyline selected. It is my road centerline. I want to be able to select all of the other polylines that intersect my selected polyline. Is there a way to do this? I need to erase those polylines. Usually I will pan to each of them and select them individually. It just seems to take a lot of time. My AutoCAD co-worker said I could use a fence and draw the fence through my polylines. It seemed to work ok but I accidently deleted extra things that I needed. So I'm back to manually selecting each one by one unless you know a different way.
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Mar 24, 2013
How to convert a 3D Polyline contour to Polyline contour.
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May 26, 2011
I create a graphic in Corel Draw X4 and export it as a .png file. It is a button with rounded corners. It will be going on a black background when put into an iphone app. So as to not have the little white corners show up from the rectangular export window, I made the button on top of a black rectangle, slightly larger than the button. I then selected the black to be transparant during the dialogs of exporting to png. When viewed in an image viewer the black is indeed transparent and does not show up. All looks fine.
To test what it will look like when put on top of a black background, I also make a black square and export it as a .png. I then open the black background in Corel Photopaint and then import the graphic into the background image. A siloutte of it shows up with the marque borders but the graphic itself (the colors and contents of the graphic don't). When combined with the black background it just disappears. Why doesn't it just lay on top of the other graphic?
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Aug 12, 2011
How to extrude in both directions in autocad, to keep object symmetrical
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Jun 1, 2011
I have a hat section brake shape that I want to extrude along a taper. But so far when I try to do this I don't get the results that I want. When I chose EXT, then "T" for taper and put in the angle of 9° and a length of 12, I get a very short piece which tapers in the wrong plane.
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Nov 27, 2013
How I can extrude this text in AutoCad2006 . I face a problem when I try to extrude text in AutoCad
Here is a AutoCad file with text , can extrude 30 mm
(Note : that text is not English language )
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Sep 4, 2013
I'm making a tube that is connected on another tube. I did this by skeleton modeling, for my tube extrusion i used Extrude To surface.
Is there any way to get the length of that extrude?
I know its possible to get the sweep length like this. Is there a way to get the extrude length as well?
'Set a reference to the active part document
Dim oDoc As PartDocument oDoc = ThisApplication.ActiveDocument
Dim oDef As PartComponentDefinition oDef = oDoc.ComponentDefinition
Dim opath As Path opath = oDef.Features.SweepFeatures.Item("TheSweep").Path
Dim TotalLength As Double TotalLength = 0
[Code]....
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Oct 10, 2011
I cannot extrude a 2D shape that is drawn by lines.It appears to be linked but is not .I can see the problem saying not a closed loop or a constraint but don't know how to fix it.
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Jul 30, 2012
I drew a round part and want to cut a hex on an external feature. I have done before but for some reason that escapes me it always seems difficult....
How can do this more easily?
Inventor 2014 PDS
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Oct 17, 2013
So I started on this project recently and was not the original modeler. This section of pipe has some problems where I'm guessing a sweep went wrong. I've tried everything I know to do to try to fix this section but haven't had any luck.
- This model has no tree and is shown as one soild "base"
- I tried to extrude cut the bad section
- I tried spliting the bad section
- I exported the file as an IGES and then tried to remove bad section
I'm sure there are some other round about ways I tried that I can't think of but in the end nothing has worked.
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Aug 20, 2012
I'm using the extrude tool so that the rectangle that I'm extruding (downwards) will taper (and become thinner at the bottom). However, when I do this, even as a fraction (.01) it seems to get bigger at the bottom. How do I make it thinner at the bottom, not bigger?
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Aug 13, 2013
I was watching on of the "Sales" videos on Autodesk.com. I saw them extruding a part surface to another surface of an imported part. I have a need to do this. When I try to extrude my part, I cant pick the surface that I need it to go to.
The video I am watching is here. Its titled "Native Translators". They show the surface being extruded at about the 0:53 mark.
The problem that I have is while working in the assembly, I double click on my part to edit it in the assembly. Next I chose Extrude and "To Next", but I am unable to pick the surface I need it to go to. The surface is in another part that is in the assembly. The part I am trying to extrude is adaptive, like in the video.
I did notice that in the video, when they pick the "to Next", the add/cut/intersect is greyed out.
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Jan 9, 2013
I know my subject is somewhat mis-named, because I gather that you cannot really extrude from a 3D sketch, however I am looking for a way to accomplish what extruding a cut from a 3D sketch would accomplish.
The problem is this: I have a simple 2D sketch that I've projected onto a curved surface (imagine a square projected onto the outside of a hollow cylinder). Now that I have a 3D sketch on the surface of the cylinder, I want to use that sketch as a "cookie cutter" through one wall of the cylinder.
If I were to simply extrude the cut from the 2D sketch, the "cookie" is wider at the edges than at the center. I want the cut to be perpendicular to the projected 3D sketch at all points.
I've attached a simple example that illustrates my problem.
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