AutoCAD Civil 3D :: Get Surface Breaklines
Dec 4, 2013
I have this:
for(int i=0;i<= tinSurface.BreaklinesDefinition.Count-1;i++) { .................
}
I have each breakline sets, but I want each breakline of each breakline set(breaklinesDefinition).
I can do this:
Autodesk.Civil.DatabaseServices.SurfaceBreakline sfb = default(Autodesk.Civil.DatabaseServices.SurfaceBreakline); SurfaceBreakline sfb= trans.GetObject(id,OpenMode.ForWrite) as SurfaceBreakline;
But how can I get ObjectIdcollection of surfaceBreakline of one breaklinesDefinition?
I have seen that there is "AECC.Interop.Land.SurfaceBreaklines". Do I have to use this?
Autocad Civil 3D 2014 +SP1
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Feb 29, 2012
I am using a breakline to establish contours around the foundation of a building. I've done this in the past with no problems. Now I'm getting an Event Viewer, Error message saying that the breakline wasn't added to the surface because it crossed a point or crossed another breakline. In one case there wasn't another breakline in the drawing.
I've used 3d polylines & others to establish the breaklines.
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Dec 7, 2012
I had some inaccurate survey points in my EG. Now I have new points and breaklines. How to locate thes old breaklines either within the list or visually within my surface editing / style.
The zoom to doesn't work as there are many breaklines within the zoom extents, and 1000's of breaklines to sift through. Is there a setting somewhere in the surface where i can turn on the breaklines that have been added already to something that's visible so i can delete those out of my surface?
I'm looking for anything on this one. (Not the obvious answers thought). Delete all and replace all (not happening).
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Mar 25, 2013
I added three feature lines to my surface as breaklines. But the triangles still cross them. Triangles shouldn't be crossing breaklines.
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Oct 6, 2013
I can't just accept something cause it's the way it is. I like to know the reasoning behind it.
Case in point:
Why does the check box say "Non-destructive breakline?" Why doesn't it say, "Erase tin lines that cross boundary?" I doesn't seem to have anything to do with breaklines. Or am I wrong on that one?
While I'm on a roll, double negatives send me into a tailspin. Like "Disable description keys", True or False. Huh? Why not just say, "Description Keys", on or off?
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Windows 7 Professional 64 bit / AutoCAD Civil 3D 2014
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Nov 26, 2013
I'm having problems contouring in C3D 2014.
I'm using the command PL - polyline to create my break lines (Centerlines, top and bottom of curb)?.
In this particular drawing the first point I click on is carrying the elevation throughout the entire length and yielding bad contours.
Essentially the bottom of curb on each side of the street should be the same elevation with a crown at the centerline.
Instead the elevations are about five feet different because the beginning point is around the corne at a point of tangency on a hill.
This has not happened in any other drawings and I've done them the same way.
I redid the breaklines with the 3DPOLY command and aside from a few minor edits the surface came out OK.
I've been reading about 3DPOLY command but have not found out too much about what the actual difference is between 3DPOLY and PL commands.
Seems like 3DPOLY is the way to go.
I do not have too much experience with C3D 2014 and am making a huge jump from 2004 LDD. How to build 3D surfaces/contouring.
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Oct 19, 2007
Where can I set the default for my mid-ordinate distance when adding breaklines to a surface. Would like to change it from 1.0 to 0.1.
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Feb 27, 2012
Using the COM Interops we can find the entities which were used toi create surface breaklines:
foreach (AeccSurfaceBreakline brklin in brklines) { object[] ents = (object[])brklin.BreaklineEntities; for (int i = 0; i < ents.GetLength(0); i++) { AcadEntity en = (AcadEntity)ents[i]; //do whatever with the Entity }}
I have, as yet, been able to figure out how to get the entity(ies) using 2012's .NET API. Is it possible, or do I have to stay with COM?
foreach (ObjectId surfId in CivilApplication.ActiveDocument.GetSurfaceIds()) {TinSurface surf = tr.GetObject(surfId, OpenMode.ForRead) as TinSurface;if (surf != null) {SurfaceDefinitionBreaklines brkdefs = surf.BreaklinesDefinition; for (int i = 0; i < brkdefs.Count; i++){Surface Operation AddBreakline brklines = brkdefs[i]; for (int j = 0; j < brklines.Count; j++){ SurfaceBreakline brkline = brklines[j]; //well, as of C3D2012 SP1 the actual entity associated with this breakline is not exposed via .NET} } } }
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May 30, 2012
In using 2013 I noticed when I delete a feature line which is added to a surface as a breakline it does not delete it from the surface. Even after a rebuild the surface does not update. I am having to go into the toolspace and manually delete the breaklines from the surface list.
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Aug 9, 2013
Can you filter 3dpolylines to find which ones have a vertex at 0 elevation? I do not see the option in the Object Selection Filters dialog. We have several 3dpolys which would take a while to go through each vertex.
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Dec 3, 2012
Using the select breaklines in the prospector doesn't do much of anything in my case. Zoom to Breakline works but how do you determine one particular breakline in the bunch if theye were never named?
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Sep 27, 2012
I am having an issue with my contours running through my breaklines (feature lines). I have tried re-ordering the breakline, edits, etc and have also set my settings to allow crossings.
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Jan 7, 2014
I am building a surface and have back of curb, curb face, and curb flowline going around a curve. I cannot create the lines with the usual pline as they will cross due to poor field collect. I created the curbs with multiple arcs. I was then going to change them into Feature Lines and am wondering if I can then use them as breaklines in a surface.
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Aug 27, 2012
The situation is like this:
I am having a survey plan both with points and contour lines. Points are comming from the main road and contour from the outside areas.
I want to be able to make the surface ignoring the contours between the breaklines of the road since any contour inside professional survey is giving me errors on profiles and everything.
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May 8, 2013
I have created linework using the line by object tool. I have created a surface and am trying to add breaklines by selecting some of this linework. Once I try to create the breaklines, it says that all those breaklines contain errors and have not inserted them into the drawing.
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May 30, 2013
Dealing with an old topo. Building a surface from a point group of points in the drawing, and 2D polyline being used as proximity breaklines.
Here is my list of events after I rebuild the surface:
So I went to use the 'Resolve Crossing breaklines' tool, and here's what that looked like:
So are there or aren't there?
When I use the 'Zoom to' feature, it takes me to the midpoint of a TIN line on a breakline, with no other objects around. Crossing window selection: only the surface and one polyline. I found one crossing breakline just by accident, not from either of these tools. After I fixed it it didn't change anything. I even deleted all the breaklines from the surface and added them again, closed drawing and reopened, no change.
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Apr 4, 2013
how to fix this triangulations. Adding extra breaklines does not seem to fix the issue.
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May 19, 2013
I'm somewhat new to Civil 3D 2013 and have never encountered this problem before. I've got a top slope standard breakline (dark green line) and bottom slope standard breakline (light green line) with the highest elevation for the top slope at 72' and it gradually slopes down to about 54' within a 75' span. My problem, as you can see in the screen shot below, is I am getting 54'-59' elevation contours right next to a survey point with a 72' elevation whenever I hover my mouse over one of the contours. There are no nearby points with anything near 54' even outside of the surface boundary (shown in magenta).
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Dec 2, 2011
I often have to do storm pond surfaces that (for the purposes of planning) are flat on the bottom. These surfaces are created from a combination of survey data and grading groups and the tin of these surfaces is perfectably acceptable. However, when contours are shown, the flat bottom is shown with contours jig-jagging all over the place.
The attached image shows a comparison of the same pond. The top was created with survey data and grading groups; the bottom was created using contour data only. The generated surface on the top shows the bottom contour going in different directions and has parts where the an expected contour is missing.
How to correct/manipulate the surface to show a proper flat surface?
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Oct 22, 2012
Has instances where you set your tolerance for the maximum triangle lenth to say 50m to reduce the amount of triangles along the edge that run at long distances. When I do this I end up with multiple surface holes and I'm not sure why as there are points in the area.
I thought well maybe it's because i should've reduced my max triangles first then added breaklines. Would this matter? I also thought I could add a line to the surface to fix the holes vs. deleting surface lines along the entire edge of a surface for many many miles.
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Nov 14, 2012
I am trying to add points into a surface. I have done this before without any problems, but now I am having issues.
When I ID points which makes up the surface it gives me the correct Z level e.g. 24.5m, however when I hover over the surface it shows me the surface name and a different z level e.g. 0.65m. What is the reason for this difference in z levels? I think this may be causing the issue I am having when I add new points.
I select the surface and use the 'edit surface command' in the ribbon, choosing add point.
When I add a point at the level I require(23.89m), it puts it in a lot higher than the surrounding area, so I tried to put the point in to the lower z levels (0.4m) it puts it in a lot lower!
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Dec 10, 2012
My goal is coming up with the volume bounded by the design surface and the existing surface. I don't have the design surface modeled yet.
Do i need to create alignment offsets?. Alignment 1 profile view is also attached. Then Alignment2.
What about starting with alignment1 profile view? Since I have created a polyline as the design profile ?
how do I shrink labels? Where is it in the settings ; the Align folder had been check.
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Oct 2, 2012
I am issues with DEM files that I am downloading from the USGS website.I download 24k, elevation for the area I need. I then choose staged 1 second, add a surface to a blank drawing, then upload the DEM files to the surface.
The surface imports correcty, but when I try to import points taken by a surveyor on the same drawing, they plot incorrectly.The DEM surface and the points from the surveyor do not correspond. Also, the DEM surface is in meters, not feet. I have tried changing drawing settings, datum types, coordinate types, etc.
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Apr 4, 2012
Is there any way to change the referenced surface on a Surface Elevation Label. I can see the surface in the properties but cannot change it.
C3D 2011
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Jul 29, 2013
I have a project involving 3 programs. I am creating a planned development in 3d to be 3d printed when finished. The project is a 5 acre tract containing 8 buildings. I have built the surface in C3D and each building in Revit. The buildings are not in the same Revit file. For my solid work, I will bring the files over into 3ds Max Design to section into smaller quadrants to build in the 3d printer.
The questions:
Would it be better to import the surface into Revit to merge surface and buildings together?
Would it be better to import the buildings into C3D to merge entities?
Would it be better to bring those entities into 3ds Max and then merge them into one? Will 3ds Max Design allow me to insert entities accurately in the environment?
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Sep 15, 2013
I need to create a sub-set surface from my main surface. not sure what the vernacular is for a "subset surface" in c3d but i do have a feature line that bouinds the desired area, but that is as far as i can solve.
i did try creating a new surface - pasted the main surface in the edit definition, then deleted triangles until the boundary alighned wiht my featureline. This seemed to work, but when i view the properties of the smaller subset suface, it shows a mimum and maximum elevation that is incorrect.
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Mar 1, 2013
Im currently using an addon for Civil 3D called Novapoint. It allows me to create 3D models of surfaces made out of 3d faces and easily models cut and fill 3d-models for me.
The only thing i need to create a cut and fill model is one or several ground surfaces (existing ground, earth layers, rock etc. whatever i need) and a closed polyline/3Dpolyline that represents the level I want my cut and/or fill model.
I enter the spcifications I want such as; earth cut angle, rock cut angle, fill angle, select which surfaces i want to include in the model calculation and select the polyline.Novapoint then calculates the cut/fill model from the surfaces to the polyline and models the different cut/fill angles and gives me the results in a 3d-face model and a specification of the volyme of rock cut, earth cut an fill.
1. Novapoint is quite unstable and crashes alot
2. You cant create profiles out of 3d faces
3. Novapoint does not automaticly combine the start surfaces with the modeled cut/fill surface
4. A large surface made out of 3d-faces demands alot of computer power
So I want to how I do the same that Novapoint does for me in Civil 3D? (I have access to Civil 3D 2007-2013 depending on which one you're using)I know I can take the 3Dfaces i created in Novapoint and make a surface in Civil 3D with them but I want to exclude Novapoint completely.
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Mar 26, 2012
all of a sudden whenever I run audit on my corridor file the surface definition becomes a snapshot. To add to the drama, the corridor surface will not paste into an empty surface. Why?
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Feb 7, 2013
My problem added with pic ... I want to make volume calculate for sample road project. When I try to compute materials I cant use Corridor surface for DATUM... There is only target surface on option..
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Mar 6, 2012
I am trying to visualize a road project. The problems is, whenever the corridor surface goes below the EG surface (when the road is in cut) the EG surface is the only visible surface.
I sort of need to subtract the corridor surface from the EG surface, or merge the both surfaces into one.
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May 3, 2013
I was wondering if there is an easy way to trim one surface to another. Right now, I have two slopes (3:1) that are perpendicular to each other. They meet at a corner and I have extended them past each other so that I could see the intersecting edge. Now I would like to trim them to each other like you would a polyline etc... but I am not sure how to do this.
If I select surf trim, it tells me they are the wrong object type, but they are tin surfaces?
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