I want to loft the surface, made of polylines.The problem is that, when I select all the splines, and then do Draw-> Modeling -> Loft then I chose the "Cross-section only", this what kind of message I get in command box:
The selected entities are not valid.
Here the .dwg file with the mentioned splines in it:
[URL]
what determines the way the surface is created when lofting. I am creating a shape and a path but i cant seem to get them surface to follow the path. It always gets creating in a different axis. Is there a way to control that?
Here is an image it should be following the line i made
I have one little question. Do you know how can I cut the limits of one surface which I made from DEM file (asc)?
The surface that I made is 15x15 km2; but I only need, for example, 6x15 km2: I want to erase the east of the surface.
I have a proposed surface that has been made by selection polyline with a z elevation as contours. Is it possible to have civil 3d easily change the weeding and supplementing factors to a tighter value after it has already been made?
View 1 Replies View RelatedCivil3d 2012 - is there a way to project standard autocad lines and curves to an existing surface to the lines and curves end up with the surface elevations? we are trying out that wants 3d lines exported in a dxf file. We have a surface and we have the lines...it's just that the linwork is all at 0 elevation.
View 2 Replies View RelatedAny way to evenly space contours around a curve in a surface.
Many times I have a steep area in a surface that needs to be displayed using 1 foot contour intervals, and in certain areas the contours are crossing each other around curved areas, like a curve in a ditch. In the past i have had to "fudge" the surface a little to get the contours to look correct.
I am currently working on a project that involves some basic collision simulation of an LNG ship in Solidworks. However, before I can do that I need to turn the ship (which at the moment exists as a series of curves, see attachment!) into a solid object, which I can then export as an IGES file.
So far I have tried the PRESSPULL command and it hasn't worked at all, only produced a "not responding message".
Im trying to make a 3d model of a site in AutoCAD and it seems lofting between some contours is impossible, this is driving me insane, first it told me there was a U and V derivative problem so i loft the surfaces that i could but now there is a gap where it refuses to loft and i cannot create a surface in that gap using network or blend or pach.
View 3 Replies View RelatedI have created city/landscape artwork using photoshop line and box tools. If you go to URL... then click on the link that says (click here to view Gotham City) you will see one of the images I am talking about. Can this image be made to look the same in vector.
View 7 Replies View RelatedI have to do a lot of lofting to create 3D shapes. The more the 2D sections are complicated, the more times takes for AutoCad to find a solution (even in a powerful computer). Beside that, I use Guide splines to create the exact shape I want. For this I have to wait two times, first Autocad find its own solution, then the solution with my Guides. Is there a way to make AutoCad loft by default with Guides, such that it doesn't ask for Guides after the initial loft, but immediately at the beginning.
View 3 Replies View Relatedwhat would be the procedure for creating a loft around a coiled path? is there a way to make the coil command create a path.
inventor 2014
Windows 7 Pro 64
i7-3820 3.6GHz
32 GB RAM
2 TB HD
NVIDIA GeForce GTX 660 Ti
Liquid Cooled
3D Connexion
CM Storm
twin ASUS LED
I'm trying to loft a base for a light fixture. It's narrowest at the top and bottom, and its widest point is in the middle. classic design.
Can I upload a pdf? I assume if it's available to everyone via a search engine, wouldn't it be ok to upload it? Any thoughts?
I digress. I'm trying to look at the circles from the side, so they form horizontal lines. I thought they'd be easier to offset a distance to.
I tried changing my views around to achieve that effect, but to no avail. UCS is World view. Or View.
One of the images in the .pdf, is of the appearance I'm after in a front view. So that way, I could do an offset distance of one inch, but as things stand now, that wouldn't work either.
It wouldn't work in this view projection, I think was what the wording was; or close to it.
The only view I was able to do any offsets in was the Top view IIRC, but that just gave me a bunch of concentric circles with no height. At least they were offset.
Basically we are trying to make a 3D plate (in this case a 2" thick piece of steel) and have a 3D hollow shape inside. Its split into Top and bottom, as shown as the below picture.
top View (plate 1).jpg
I have tried the loft command (which I just learned off within the past hour or so) and it indeed works. But I wish to use its as the opposite, where the middle is hollow and the rest is a solid object.
Side View (plate 1).jpg
I have tried the loft command (which I just learned off within the past hour or so) and it indeed works. But for the life of me does not know how to get it as one big object with the middle shape hollow. Am i missing a step or is it another command completely?
Also, once the object has been created, I want to split the object on its X axis mulitple times, almost like an exploded view. Each split will have its own set of top and bottom orifices which will represent multiple plates.
Is there a way to do that? Also is there a way to gain and separate the top and bottoms of these newly split plates?
Here is the drawing file as well to work on -> 3D-MK1.dwg
In previous autocad version that supported Lofting, i was always able to create a solid loft.
With 2013 the loft command seems to divide its abilities depending on what type of profiles are selected.
When selecting a closed polyline profile, loft produces a solid. Works fine.
When selecting a region or solid face loft produces only a surface.
The work i am trying to do at the moment involves irregular sections and/created from existing solids.
I could trace the profile and make a polyline, but each profile contains an ellipse, and you cant trace an ellipse.
Where i used to be able to select the ends of the existing solids and create a solid loft,
I now have to produce a section twice (gives you a region), loft the regions, convert the regions to surfaces (because the produced surface doesn't have and faces), union the surface and then convert to solids
Instead of 1 command there are now 6.
I tried turning of the assiciativity (surfaceassociativity 0) hoping that it had some sort of influence but to no avail.
There was no issue with 2010 and 2012 and i have just installed all 2013 products.
I have a lot of work to do and have to produce 3dsolids.
I am working on creating a male mold for a canoe. I first designed the cross sections for the canoe and then began converting them to the mold cross sections. When I try to loft the cross sections I have converted so far, they all loft as I intended until I get to the rear of the canoe (sketch 8). The issue typically arises in gunwale section (the part that appears to be a notch in the sides). Everytime I loft, one of the gunwales splits/twists in an undesired fashion (in the image below the right gunwale is incorrectly twisted).
I do not understand why this is happening for a few reason:
1. The canoe cross sections lofted as planned, and I only added simple boxy shapes to those cross sections.
2. Each cross section is symmetrical (or at least from what I can tell they are).
3. The cross sections that are lofting improperly all have the same number of segments and are in very similar shapes.
I have attached the file of the cross sections and another file of an improper loft.
Coming from Sketch up to real big boy tools. I watched the tutorial videos and tried poking around a bit for this specific answer but came up a bit short.
What I'm trying to do is loft a face to a point. Easy enough. I've got my point established on an offset work plane, and I can just loft to that, however, I get nothing but straight lines. (First attachment)
An example of the ideal outcome in SketchUp is the second attachment.
I'm having the most difficulty trying to draw the curves along which I want the face to be lofted because, even as I sketch along my 2D plane, I can't snap the endpoints of my arcs to the endpoints of the face (or the point to which they'll all connect).
If you can create a solid by lofting between two section, in this case they are 3d polylines, along a given path. The path is at the top of the sections. Using the loft command I have to key in the PO ( point ) option several times to get the path option to show then when I select the path it gets treated as another section. See attached.
View 8 Replies View RelatedSuccessfully drawn a eggshape for tabletop using 3 ellipse and arcs and converted these into polylines but having trouble converting them all into 1 polyline for lofting.
View 8 Replies View RelatedWhich program is used now days to create a ships hull lines plan? In the old days it was done on the floor or board drafting.
If I have a unique curved bow, which software is used to create the lines plan.
I am preparing a batch of images for test submission, for a stock photo library.Recently a person working for one of the visual effects studios in London happened to tell me that these strict agencies use some set of layers that can separate tonality and color values to check for banding, dirtiness, noise and all those technical flaws that the human eye can't notice on a monitor.He said they perhaps have an action for it so that they can review faster.
He said that it is known as 'Craze Curves' or 'Visibility Curves' technique.He further added that all the studios use it before giving the final files to clients so that there is no issue in printing afterwards.It is sort of a quality control check and has been used by digital and advertising agencies all over the world.
But now his email seems to have changed and I can't get in touch with him to know how to use the technique.
I have 3 scientific waveforms, made into splines , from X,Y and Z data. Basically 3 long wiggly lines.
I wish to visualise the data by modulating a spheres surface in 3 dimensions so that the X data creates wave on the surface of the sphere running along the x-axis , the Y data along the Y axis and the Z along the Z axis. All the data (splines) will interfere and modulate with each other across the surface.
I have spent a couple of days looking at nurbs and lofting but cannot even get close to this. They all only allow splines in 2 dimensions to interact and nurbs cannot cope with the data volume anyway.
ps i can obviously extrude the 1d data or lathe the data but each only makes 1 or 2d surface interaction. The attatched pic is each one of the data splines made into a sphere using a 180 bend and lathe. This isnt exactly how id ideally have it. I need all three joined into one shape.
I have spent some time over the last few days attempting to create a boat hull by lofting sections along a line representing the center line of the hull, but I'm not having much luck. The shape that is created appears to be rotated some weird way, and I just can't seem to get a handle on what is going on. The section splines were created in the Front view, the path was created in the Top view. The section shapes were then placed in the Left view to correspond to their location along the hull.
My question is this: where can I find a tutorial that deals with boat hulls and lofting specifically, or failing that.
It's new to me the loft compound object, and I found it a little cumbersome.Provided the shape objects have the same amount of vertices, the loft should do its business, is it?
View 6 Replies View RelatedBasically I am following a tutorial which says that when you create a loft from a path and two shapes, the loft should still be linked to the shapes, so if you resize one, the loft would change, but that is not happening for me. I am using 2014 so I don't know if this feature has changed, or if you access it in a different way?
View 6 Replies View RelatedI'm trying to make a simple race track for my uni project. I've created the track's path using lines and arcs, and attached them all together into one single path.
[URL]
I'm then trying to extrude the track geometry (a simple rectangle) along the path of the track (see the bottom image).
I'm following a tutorial that says to select the line, then under compound objects select loft. Then under creation method I should chose "Get shape" and select the rectangle, however I'm unable to click on "get shape", the option is greyed out.
Autodesk 3DS Max 2012 Student Version
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?
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.
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!
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.
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.
how I can add more volume to curved object surface? Say for example I have a plastic cup.You can think of this as cylinder object ,which was the shelled out using the shell tool and then had its base sealed.
Now at certain parts, I would like to increase the thickness and then blend it the rest of the surface(may be chamfer its edges) .
At certain parts on curved surface I would like to add an extra mm, I think if the surface was flat I would just sketch the shape, then extrude it by few mm and smooth the edges by doing a chamfer
But how can this be done on surface that is curved? Or multi curved for edges?