I'm currently facing this problem of lofting/elevating the drawing.
The drawing had all the 3D polyline and I need to join them. I have no problem joining a 2D polyline, but now i'm facing this problem.
see attached. Capture.jpg
the use of the LOFT command with circular sections along a polyline path?
Experiment 04 Loft and Path.dwg
Experiment 04 Loft and Path-Layout1.jpg
There is a major bug with CorelCAD LOFT command - when used with 3D polyline objects, it fails and errors out with the following error:
Specify cross-sections in lofting order»1 found, 2 totalSpecify cross-sections in lofting order»Selected cross-section is not a valid type.
The workaround is to set the CCS to the plane of the 3D polyline object and then use 2D polylines to recreate it, move the 2D version, delete the 3D version, Align the 2D version with where the 3D version came from and then repeat the LOFT command.
Has been logged with Graebert under ticket: #12458
To repeat the error, see the test file. There are two radially aligned triangles in each set. The set on the left are 3D polyline. The set on the right are 2D polyline. Attempting to loft the set on the left will cause the error.
Both large and small triangles are respectively co-planar.
how to use GIS maps, and LIDAR (etc) information to create terrain, and man-made features within Max2012/3.
I have a long history using MAX but not importing this kind of data, with any success.
Generally, I know that Global Mapper is the good source for hirez imagery based on geospatial coordinates. Not sure how to use GM, but I bet they have tutorials. Mapping GM data onto a Max mesh is possible.
But when it comes to creating realistic terrain from DEM, or Lidar data, I'm not sure where to start.
The starting point:
I have a JPG image of a battlefield wherein the height contours in feet are marked as faint lines (like a closed contour line for 390 feet, another for 420 feet, etc etc.)
The desired final product in Photoshop:
A grayscale RAW document that shows the height variations in gray tones.
Low lying troughs need to be darker and higher elevations need to be lighter.
See picture below for example:
I am ignoring the roads and other features in the battlefield.
All I am interested is the technique of converting the height contours into a smoothly varying grayscale image.
I am a complete Neanderthal when it comes to Photoshop. I do have a copy of Adobe Photoshop CS3 on my PC.
I have been toying around with the package on and off. But nothing useful has come out yet.
Now to my specific questions
*How do I bring in the height contours into Photoshop? I have tried the magnetic lasso tool and able to trace a height contour with good fidelity.
I am kind of stuck at this point. Do I save the selection to a new layer? Do I thus create one layer for each of the height contours?
Say one layer for the all the 390 feet contours, another layer for the 420 feet contours, one more for the 360 feet contours etc etc?
*Assume that I have somehow brought in all the height contours successfully into a new Photoshop document.
How do I create a gradient effect between the contours?
The lowest height in the map is 300 feet and the highest areas are at 480 feet.
Thus the area enclosed by the 300 feet contour lines needs to be darkest (pitch black) and the area enclosed by the 480 feet contour lines needs to be lightest (pure white).
The areas in between need to go progressively from dark to light shade.
How do I achieve this?
*Assume that I have created now a PSD document that has these smoothly varying grayscales. How do I convert this to a RAW image?
I work at a car seat company, and we are just now, starting to draw in Inventor. I have problems drawing the seat belt. Here is my first try:
I have tampered with this one! From this angle it looks ok, but it isn't right. I have tried using Loft and Sweep, but with no good results! The seat belt is static in the shown position, but should be able to adjust onto another seat.
I am making a design for a centrifugal water pump, the rotor was no problem, but I'm having some trouble designing the top case. I thought it would be easiest to create the channel for the water outlet using a loft feature.
I attached the ipt. there are two sketches, and I need a loft from the small to the large one, all the way around the circle. when you see it you'll probably understand what the result should be, but, no matter what I try, either I get an oddly shaped loft, or an error.
I am aware of creating a polyline and using .AddVertexAt() to give the points, my question is if I want to create a polyline in acad I generally will pick a point and then type out @10.5<0 or something similar of that nature to pick my next point. Is it possible to add vertices to a polyline in .Net giving it the distance and angle of one point2d to the next point2d?
Example:
acPoly.AddVertexAt(0, New Point2d(0,0),0,0,0)
acPoly.AddvertexAt(0, New Point2d(1,0),0,0,0)
but instead?
acPoly.AddVertexAt(0, New Point2d(0,0),0,0,0)
acPoly.AddVertex ( use code equivalent of New Point2d = @10.5<0 from point at 0 index)
I would like to create a polyline in a plane that is not WCS. I am able to do so with the 3D polyline. My problem is that 3D polyline does not allow for a Bulge in the polyline.
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2. Create streets, roads, highways, train tracks, etc. <- I need better tutorials.
3. Create buildings.
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[URL].......
How to generate a Digital Terrain Model - DTM GRID method in AutoCAD Civil 3D 2012 on the basis of X, Y, Z (saved in. Txt)?
View 9 Replies View RelatedI am rarely new to map 3d. What I would like to do is to export 3 dem surface in any kind of format, so that I could open it in 3d max.
I know how to generate Contours, but when I export them to dwg and later open in autocad architecture there are missing info on z coordinate - so everything is flat.
Is there some way to make .3ds file or .dwg file so that would really look like a 3d terrain in ACAD architecture or 3d max?
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View 3 Replies View RelatedIs 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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View 4 Replies View RelatedDue to modeling purposes, I need to convert a 3D polyline to a spline. What I have been doing is:
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- 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?
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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.
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.
When you use the Spacing command to set the work canvas grid spaciing, it requires that you pick a point in the drawing and then enter the value? Shouldn't it just prompt you for a value? Seems like a bug maybe. Am I missing a settings or something?
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02681864_dem_spe.img
02681864_dem_spe.rrd
02681864_dsm_spe.img
02681864_dsm_spe.rrd
Can these be used with Autodesk Map 2012?
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How do you find 'if' a polyline is inside another polyline?
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what the best way to project a spline onto a edit poly 3d surface. i would like to maintain adjustability of the spline and have it morph an instance projection onto the surface if possible.
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