AutoCAD Inventor :: Getting Closed Loops From Polylines In DWG Files
Feb 26, 2012
I am trying to import a complex curve from autocad lt (in my case an airfoil), to create parts. I have drawn the curve in autocad lt as a polyline. Autocad lt treats the curve as a single object, and seems to understand it as a closed loop.
When I import the curve into Inventor lt, Inventor treats the curve as a series of unconnected line segments. What can I do in either Autocad lt or Inventor lt to get Inventor to treat the curve as a single object, so that I can then extrude it?
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Mar 7, 2013
I am making some fairly free form sketches using lots of 3-point arcs that ultimately need to be closed loops so that I can extrude them. Although I have always been letting one arc snap to another at the end of the process I seem to have trouble closing the loop. It does not seem very apparent how to find the points that are not properly closed and I wind up struggling with the Close Loop function. Is there an easy way to tell where the problems are in a profile? I have tried showing all constraints, but that doesn't necessarily give me the clues I need.
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Nov 26, 2012
is there a way to use vb to add closed sketch loops to an existing feature?
I am trying to create a parametric template for a fan guard assembly, complete with drawings.
I am using an arrangement of circles defined using some linear sketch patterns as the cross-section of a revolved feature. Using ilogic/vb, I want to automate the number and spacing of items in the linear pattern, and then update the loops selected for the revolved feature.
I have found code on this forum (courtesy of Curtis Waguespack) that I can use to select all closed loops and create a feature. I can apply this code to create a NEW revolved feature, but I haven't been able to figure out how to use it to UPDATE an existing feature.
I need the feature to UPDATE rather than create new to maintain links in my assemblies and drawings.
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Feb 4, 2011
How do i convert a series of polylines to one closed polygon (so i can calculate an area, hatch it, etc)?
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Apr 9, 2013
Basicaly I have a plan of a part of a city and I want to fill the houses with a solid hatch, I was wondering if I could do them all at once instead of picking an internal point one by one (there are a lot of them!).
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Sep 5, 2013
I have a piece of code that needs closed polylines.
I use the following selectionfilter to filter the selection so I can only select closed polylines:
Dim sf As New SelectionFilter(New TypedValue() {New TypedValue(0, "LWPOLYLINE"), New TypedValue(70, 1)})
Today I noticed that in some drawings this filter won't select all the closed polylines for me.
After some experimenting I found the 'linetype generation' property of the polylines to be the problem. If this is enabled the above filter will not let me select a closed polyline. If I disable it, there is no problem.
How can I make my code for selecting closed polylines more robust? Is there a 'TypedValue' for closed polylines with the linetype generation enabled?
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Jan 4, 2012
I have a series of boxes or polygones that I would like the program to find the 1/2 distance and create two seperate polylines from the one object.
Example:
I have a square with pt1,pt2, pt3 and pt4 respectively. After I have ran the program it would create a diagonal from pt1 to pt3 and join the rest of the lines now to create the one polyline. Also it would do the same to create another exact polygonal shape for the other half. Thus creating two shapes of equal value from one.
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Sep 22, 2011
I'm trying to create about 150 cross-sections, each consisting of 9 closed polylines of which I have created the coordinates. My issue is making the list of coordinates create separate polylines instead of one enormous polyline. Any way to setup the columns, perhaps with blank rows, some way of applying ASCII code, etc. to automatically break up these polylines? (even if they aren't closed that's fine, I just need to make the polylines separate.)
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Nov 1, 2012
I'm trying to create a stage-storage table with six closed 2D polylines. They highlight when I select them, but nothing is loading in the Table?
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Dec 30, 2012
Just found the issue with my AC2013.
A bit of difference is that the polylines do not have to be even closed. Any polyline gives me exactly the described behaviour, which is definitely not intended. Appears still not resolved.
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Jun 18, 2013
is there an option or a lisp routine to create a 3d boundary from closed 3d polylines?
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Mar 21, 2013
I need to segregate closed polylines in my drawing by area range. Ideally, I would input the number of ranges I need.
Then somehow find the smallest and largest pline area to determine the range values (rounding up to a sensble number)
Then with the ranges determined the polylines would be segregated and moved to new layers.
I've been trying to hobble together pieces but with no joy.
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Sep 13, 2012
Using my ipt flat pattern, I export the face as a Rel. 12 dxf for the file to be used in our cnc software.
I'm having a problem that the guy in the shop cannot open the dxf unless I open the dxf in Autocad and explode it.
Inventor is creating the perimeter as a polyline.
Is there any setting I can change to prevent the polyline creation?
I have also noticed that, in some instances, through the bend area, that after I explode the file, there will be like 127 lines on top of each other.
Again, is there a setting I can change to prevent all of this?
Lenovo Think Pad
Windows 7 SP 1
64 Bit.
Inventor 2013
ACAD Mechanical 2013
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Mar 9, 2012
In regards to sweeping, what does the title of the post mean (self intersecting paths or loops are invalid for this operation). I have a 3D sketch consisting of 1 straight line, one spline with 4 points dictated by 'points' and an arc. All have tangential constrains to each other and I am looking to sweep a circle along this path to create a bent wire. I don't have anypictures or files as it is a stand alone computer at the moment.
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Nov 2, 2011
It happens often that a sketch has redundand points or open loops.
I don't want to run the sketch doctor to clean it up every sketch I create.
In the attached avi you can see the few steps that I use to create a sketch. I don't understand why at the end it has problems.
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Jan 24, 2013
Why does this code fragment not work? (Within an active part sketch, with some sketched geometry.)
I'm just trying to close the loops to have valid extrusion profiles.
Dim iCounter As Integer
Dim icounter2 As Integer
Dim oSPoint1 As SketchPoint
Dim oSPoint2 As SketchPoint
Dim xVal1 As Double
[Code]....
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Jan 2, 2014
As the above mentioned, I have a drawing drawn using polylines with width from someone. The width of the line are suppose to represent area,
To put things into prospective, here is an example:
The polyline is 10 unit long and with a width of 2 unit wide. If i explode that polyline, it will become a single polyline without width. The line are suppose to represent 10 unit long and 2 unit wide; representing an area.
My question is is there a way to change the line above directly from polyline with width to a close polyline (4 x polylines) of 10 unit long and 2 unit wide.
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Oct 9, 2013
How to draw 3D polylines, or convert single lines to polylines?
this.JPG
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Apr 10, 2012
I have used PEDIT to join multiple polylines, which now appear as polylines. But when I use QSELECT to show all open (non-closed) section, one polyline still shows up as open.
I've attached the file I'm working on. The polyline in question is the green outline on the object on the right.
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Jan 20, 2006
Is there a way of converting 3d polylines to polylines with an elevation?
I have a dwg of contour information, the contours are 3d polylines, because they are contours the z value is constant all along the line, so there no question what the elevation of the polyline would need to be.
I need to do this as I then need to import the dwg into a GIS programme called MapInfo whch doesn't read 3d polylines.
I have access to AutoCAD 2004 or 2005LT.
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Jul 7, 2011
In the ipt. sheet metal file, we create the flat and export face as a dxf file to use in our cnc software.
The problem is that our shop guy cannot open the dxf in the cnc software (he gets an error) unless we open the dxf in Autocad and explode it and resave. For some reason, Inventor creates the dxf with the perimeter of the part as a polyline.
Is there a setting that could keep it from making it a polyline.
It is time consuming to have to go into Autocad, explode and resave every sheet metal part.
We use Inventor 2010.
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Dec 14, 2012
I am trying to import Acad 3D polylines to an Inventor ipt 3D sketch via insert -> Acad etc. Sometimes the segments between vertices come in just fine (see first pic), but other times they are all squiggly (second pic).
The Acad polylines are true 3D lines with varying X, Y and Z. I need to bring the lines to Inventor in order to sweep along them. I am using Autocad and Inventor 2013.
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Sep 27, 2013
i want to have multiple offsetoutlines on a closed or non-closed path. with "offset path" i can make only one additional outline but i need multiple?
i searched all over the net for answers with no success.
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May 29, 2003
How can I create closed profile in VBA Suppose this profile includes Line and Spline See attached code in vb
Later I cannot create Extrude feature because previously created profile is open (consists of two separate curves)
How can I join together points in profile which belongs to separate curves to get one curve.
Dim t As Inventor.TransientGeometry
Set t = ThisApplication.TransientGeometry
Dim c As Inventor.ComponentDefinition
Set c = ThisApplication.ActiveDocument.ComponentDefinition
[Code].....
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Apr 5, 2013
The memory the program is using balloons over time because it does not release memory after you close files. In the course of a day, the memory the program uses gets into the 8-10 GB range (we have very large files such as vehicle wraps and large full color signage). The program will start and occupy under 100mb of memory and then when you open a file it will allocate the memory for that file (say 1 GB). Then when you close that file, the memory isn't released or even re-addressed (it just seems to be in limbo at that point). So after 2 dozen or so files the memory the app is taking up gets into the multi-gigabyte range....even without a single file open (the app is running with no open documents).
Now the system I am running has 12GB of ram, so I am not running out of memory yet, but it is still quite alarming to look and see only 2 GB of ram free on a 12GB system with no open files...
I cannot imagine why the programmers wouldn't have the app release the memory it's using. That seems like really sloppy coding to me. (programming 101: when your app is done with memory, release it.).
The system configuration is as follows:
Core i7 980X 3.33Ghz (6 physical cores with hyperthreading), 12 GB RAM, 4-way RAID-0 SSD HDD array, Windows 7 64-bit, Corel Suite x6 (updated to 6.3).
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Jun 8, 2013
Today's Question is as mentioned above, How to remove the loops from a surface?
I have a surface created from the points. Eventually it has got many ups & downs in the elevations, so I did delete some of the points from the surface. And due to this, some loops are developed inside the surface itself with the closed boundaries.
I also tried to draw surface lines in those loops, either they get shorten or gets enlarged but does not completely vanishes...
64 bit OS | Win-7 | 3.60 GHz Processor | 16.0 GB RAM | Civil 3D 2013 |
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Apr 26, 2011
I have to add 80 Xdata to some objects. How to populate them within a loop. This what I did for 11 of them . But
I am pretty sure there is a way to do it in a loop which I don't know .
Public Sub SetXData2()
Dim doc As Document = Application.DocumentManager.MdiActiveDocument
Dim ed As Editor = doc.Editor
[Code]....
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Mar 16, 2013
I had 8 psd files open, all with many layers and wanted to make a copy of each one, change resolution to 72 and save as a jpeg. I accidentlly hit the wrong action and all the psd files were flattened, changed to 72 res and closed. Is there anyway to retrieve a previous save to get back the layered files? CS6 Extended and Windows 7
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Dec 20, 2013
I'm designing a lift truck with a "chain over" lift - the lift cylinder has a sprocket mounted on the end of the rod, and the chain is grounded on one side. The other end of the chain is mounted to a lifting carriage so that as the cylinder extends and pushes the sprocket up, the chain rolls over it and the carriage moves up (at twice the speed of the cylinder). This is nothing new - it's pretty much how every single fork truck in the world operates.
My question is this: can I use the roller chain generator to model this chain, or should I model the links and array them along a path? My thinking is that if I can use the chain generator, I should be able to animate the chain using Dynamic Simulation. But the chain generator seems to require a minimum of 2 sprockets in order to work - there's no way that I can see to have a "non-looped" chain or any way to just ground the end of the chain.
2014 Product Design Suite
W7Pro-64
Intel Xeon E5-1620 @ 3.60 GHz 16GB RAM
Dual 1GB NVIDIA Quadro K600 graphics
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Jan 28, 2012
I'm just wondering is there a possibility to select all closed profiles from a sketch to make an extrusion or revolve with a shortkey instead doing that manually with the mouse for each profile? Something like CTRL+A
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Sep 16, 2013
Which one of these methods insures that there will be no error, or bug on closing the sketch profile in all the future versions of inventor? One is simpler than the other (no line on top of line, no need to make extra construction line). I'm fine either way, i just want to know which one is the SAFEST FOR LONG TERM PART FILE STABILITY.
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