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    [Plugin] TIG-Smart_offset

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    • TIGT Offline
      TIG Moderator
      last edited by

      @blajnov

      Looking at ways of minimizing this, and offsetting curves as curves...
      Watch this space...

      TIG

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      • TIGT Offline
        TIG Moderator
        last edited by

        Here's v1.6 http://sketchucation.com/forums/viewtopic.php?p=446462#p446462
        Curves/Arcs are now offset as curves in the offset-outline...
        Speed improved.
        Glitches avoided.

        A Very Extra-Merry Xmas to you all... 😄

        TIG

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        • JClementsJ Offline
          JClements
          last edited by

          Santa never rests. ☀

          John | Illustrator | Beaverton, Oregon

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          • micioneM Offline
            micione
            last edited by

            TIG,
            this, in the latest version (1.6) of your very useful tool.
            (windows 7 - Last Updated SketchUp).
            regards,
            Roberto


            1.6.png

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            • B Offline
              blajnov
              last edited by

              Error Again


              25-12-2012 22-31-38.png

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              • R Offline
                rv1974
                last edited by

                @blajnov said:

                Error Again

                the 48.4 dimension was not taken 'legitimately' (you should measure from the center of the arch segment perpendicular to offset segment)

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                • TIGT Offline
                  TIG Moderator
                  last edited by

                  Two steps forward one step back...
                  Another 'fix' is in the mixer... 😒

                  TIG

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                  • artmusicstudioA Offline
                    artmusicstudio
                    last edited by

                    hi tig,
                    just send something thru paypal, is 5 p. ok ?

                    i am trying the offset-script, but have some problems, i cannot solve

                    drawing new curves : ruby works

                    in my actual project a have to insert lots of curves for landscape modelling.

                    i created a hole in an existing mesh >> extrqacted the borders of this hole >>
                    projected these border to a plane (sandbox) >> converted the borderline to

                    1. polygon
                    2. curve

                    but somehow the script does not create offsets here (standard sketchup offset works - with all its mistakes)

                    i attach the planes, maybe you can check it

                    i work in skp 6

                    thanx and regards stan


                    2 planes - border curve / border polygon

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                    • Mike LuceyM Offline
                      Mike Lucey
                      last edited by

                      Thanks TIG,

                      I don't use a lot of plugins but I think this one will be very useful. Happy New Year to you.

                      Mike

                      Support us so we can support you! Upgrade to Premium Membership!

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                      • TIGT Offline
                        TIG Moderator
                        last edited by

                        @Stan, any donation is more than welcome... I assume you meant £5 because 5p=~8¢... 😉

                        I think I have a fix for your probable issue - these 3m inset/outset offsets worked OK with a new version that I am working on [native fails with twisted parts].

                        It fixes some issues with multi-curve loops and also some curves that straddle a loop's start/end vertex not all offsetting as curves...

                        So far it seems to trap various permutations of offset size and loop contents and convolutions, that have been some unexpected causing issues...

                        I hope to have that version ready for release tomorrow...


                        3m.PNG


                        3m[native].PNG

                        TIG

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                        • D Offline
                          designforgood
                          last edited by

                          Merry Xmas TIG. This looks awesome!

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                          • TIGT Offline
                            TIG Moderator
                            last edited by

                            Here's v1.7 http://sketchucation.com/forums/viewtopic.php?p=446462#p446462
                            Further glitches and convoluted offsets trapped.
                            I am hopeful this will address most issues reported to date...
                            😕

                            Happy New Year !
                            [arriving shortly... 😉 ]
                            😍

                            TIG

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                            • kenK Offline
                              ken
                              last edited by

                              TIG

                              Not to confuse the issue. Just how should and object look after an offset. I have attached two illustrations, showing an object that has two results. The first shows the object with an offset from your plugin, and the other showing the same object after scaling.

                              I certainly do not have the smarts to determine which is correct. However, I would suggest that the scaling illustration that shows the object retaining the basic shape would be the more correct solution.

                              Again, TIG thanks for all your work.

                              Ken


                              Offset.png

                              Fight like your the third monkey on Noah's Ark gangway.

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                              • TIGT Offline
                                TIG Moderator
                                last edited by

                                @Ken

                                The definition of an 'offset' is that all of the edges of the original face's 'outline' are replicated 'offset' perpendicularly by a fixed distance. In your illustration that is 'inwards'.
                                Clearly in the example made using my tool all of these new 'offset' edges are properly equidistant from the equivalent original perimeter edges.
                                In your 'scaling' example the new 'outline' is an exact replica of the original outline, it's only smaller is size, not 'offset'.
                                Therefore only some of these new edges are equidistant from their equivalents, the rest are further away by varying amounts.
                                Thus, the 'scaled' option gives a copy that's a shrunken version,: although it might be what you want, this is NOT what we are trying to do with an 'offset' - for that we want the 'walls' of the offset shape to be a consistent width; so for us the 'offset' option IS the correct tool to use...
                                Use can 'scale' to make smaller/larger exact 'copies' of a face's perimeter, BUT you need offset/Smart_offset to make proper 'offsets' of it...

                                TIG

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                                • kenK Offline
                                  ken
                                  last edited by

                                  TIG

                                  I understand that doing an offset, each edge would be offset to a set amount. However, some edges would disappear, and others would distort the shape.

                                  Circular and rectangles shapes would be the only shapes that retained the original shape. With all others shapes the offsetting tool would have to make decision on how to modify the edges to give a close proximity to the original shape.

                                  A real offset would have each edge offset the amount you select, and you would live with the results. Which may not be any where close to the original object's shape.

                                  So my question was, if it OK to distort the shape, wouldn't a distortion of the offsetting parameters that still gives a close approximation to the original shape be better.

                                  Note, I am not trying to change your plugin, I use offset quite a bit during modeling and will download and make a generous cookie offering. Certainly your plugin gives better results than the Sketchup offsetting tool.

                                  It just occurred to me to ask myself, what am I trying to do when I offset and what are the acceptable results?

                                  I generally use offsetting to establishment a edge internal or external to the object's edges for moving or setting another object. Very seldom do I use offsetting to get a larger or smaller version of the object.

                                  I am done, so now everyone back to work.

                                  Thanks TIG for your answer, you may start your break.

                                  Ken

                                  Fight like your the third monkey on Noah's Ark gangway.

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                                  • TIGT Offline
                                    TIG Moderator
                                    last edited by

                                    Sometimes an offset must result in some edges in the original loop remaining unused.
                                    If they have no viable vertices they aren't made.
                                    Simple symmetrical shapes scale and offset with similar results, simple because the scaling is about a 'center'.
                                    The difference between Scaling general shapes and an Offset are illustrated below.
                                    You will see that my Smart_offset omits some edges in the most weird shape because they are 'cross-threaded' and no longer the requisite distance from the original edges...Capture.PNG Incidentally, in making this illustration I discovered a glitch where single welded curve perimeters [like the one around a circle] - these were failing to Smart_offset properly. I've fixed this and will post the update shortly...

                                    TIG

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                                    • TIGT Offline
                                      TIG Moderator
                                      last edited by

                                      Here's v1.8 http://sketchucation.com/forums/viewtopic.php?p=446462#p446462
                                      I noticed a glitch offsetting the 'outer_loop' of a face that was in the form of a single welded-curve [like a circle, ellipse etc].
                                      This has been fixed.
                                      Now a face with any type of single welded-curve 'outer_loop' should 'smart_offset' correctly.
                                      I also fixed a typo in the offset-curve's 'welding-code', which then failed once the main issue was itself fixed.
                                      😄

                                      TIG

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                                      • pbacotP Offline
                                        pbacot
                                        last edited by

                                        TIG,

                                        This IS excellent! Something needed since SU began. I'll have to give it a try.

                                        Happy New Year!

                                        Peter

                                        MacOSX MojaveSketchUp Pro v19 Twilight v2 Thea v3 PowerCADD

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                                        • jeff hammondJ Offline
                                          jeff hammond
                                          last edited by

                                          @unknownuser said:

                                          TIG

                                          Not to confuse the issue. Just how should and object look after an offset. I have attached two illustrations, showing an object that has two results. The first shows the object with an offset from your plugin, and the other showing the same object after scaling.

                                          I certainly do not have the smarts to determine which is correct. However, I would suggest that the scaling illustration that shows the object retaining the basic shape would be the more correct solution.

                                          setoff.jpg

                                          dotdotdot

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                                          • jeff hammondJ Offline
                                            jeff hammond
                                            last edited by

                                            @unknownuser said:

                                            So my question was, if it OK to distort the shape, wouldn't a distortion of the offsetting parameters that still gives a close approximation to the original shape be better.

                                            the shape isn't distorting in a real offset (though i guess i can see how you're thinking it is)..

                                            imagine you draw the outline of, say, a building.. (and you can use your example image as an example of this as well)... now say you want to make a perimeter wall that is 12" thick.. what will the inside of the wall look like?

                                            you're thinking the inner wall is a distortion of the shape you'd originally drew but when i see your scaled version which you may think looks right, i see a wall that's 12" thick in some spots, 24" thick in others.. and a variety of thicknesses in between.. (i.e.- definitely not an offset 😉 )

                                            dotdotdot

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