Unwrap truncated Cone Shapes on Images in AutoCAD

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IngSayyad
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Unwrap truncated Cone Shapes on Images in AutoCAD

Post by IngSayyad » Tue Feb 17, 2015 12:58 pm

I have seen this video..

Unwrap Cylinder Shapes on Images in AutoCAD

https://www.youtube.com/watch?v=HswZGRwCtHg.
But I 'm looking for unwraping truncated Cone shapes on Images .

Does someone knows some link.

Below is just a sample image from net.
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Dr.-Ing. Shahzad Sayyad

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Re: Unwrap truncated Cone Shapes on Images in AutoCAD

Post by Jana-at-kubit » Tue Feb 17, 2015 1:52 pm

Hi Shahzad,

in PointSense Heritage we do have a feature for unwrapping truncated cones into the plane. Please check minute 4:25 of this teaser video
https://www.youtube.com/watch?v=_MSmn5UUZq0

You first fit the truncated cone then unwind the point cloud into the plane. You may then create an ortho image from the unwound cloud.

So far we do not yet have an option to unwind photos of conical objects, but I have added this to our task list for future versions of PointSense Heritage and PhoToPlan Ultimate.
Jana Siebenbrodt
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Re: Unwrap truncated Cone Shapes on Images in AutoCAD

Post by IngSayyad » Tue Feb 17, 2015 2:16 pm

Thanx for info.
Dr.-Ing. Shahzad Sayyad

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Re: Unwrap truncated Cone Shapes on Images in AutoCAD

Post by Phill » Thu Feb 19, 2015 11:29 pm

Shahzad

I had a guy ask me for a cone unroller back in December. I made him the attached autocad lisp. There are a few functions in Vlisp that make some of this type of thing a bit easier. It doesn't use anything in AutoCAD (pcg ect), it just reads and writes a pts. Type appload, find the lsp file and then press load,ok, then type in Uncone. You need to have a the geometry of a pointed cone so you might need to do a little bit of math if you have a sliced cone (truncated) to figure out the height, and give the program the bottom radius, the height of the cone and the centerpoint at the bottom. You need to give it data of a cone with the point upwards, as a unified pts file.

It will unroll it as if you turned the cone with the point pointed south and unroll it clockwise from north, with 0,0,0 being the point of the cone. Obviously it hasn't been significantly beta tested, so have a go with you data and have a good look at the results. I tested it with 28 points and it seem to be doing everything ok.

I am pretty sure this is what you wanted to do. Hopefully it will be of some assistance.

Cheers

Phill
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Re: Unwrap truncated Cone Shapes on Images in AutoCAD

Post by NOVAMECH » Fri Jan 13, 2017 1:48 am

I WILL UP DATE THIS IMAGE - IF PHIL INFORMS US THAT IT'S NOT CORRECT
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