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    Cutting angles into the edges of a complex curved shape

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    • G Offline
      GreyHead
      last edited by

      @unknownuser said:

      Tho I don't really understand why you would need to double the shape.

      The only reason for doubling the shape is that it gives you a 'center point' to scale around. The scale tool lets you do a uniform scale (the same in both x & y directions) about the 'center' - using the control button; or one of the corner points of the bounding box.

      When you want to copy and scale along a path then it's important to have some kind of constant relationship between the shapes and the path. For example, with circles you can mark and put the center of each circle on the path, with a square you can use the center, or one of the corners.

      However if your shape isn't a circle or a regular polygon then it isn't easy to find the center; and if the corners of the shape aren't at the corners of the bounding box then you can't use those easily for scaling because the relationship between the shape and the path changes as you scale.

      This is really hard to describe . . . see if the tutorial does it better.

      Bob


      scaling.skp

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      • V Offline
        Voder Vocoder
        last edited by

        I must be missing something. This seems too easy.

        favicon

        (www.datafilehost.com)

        ~Voder

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        • G Offline
          GreyHead
          last edited by

          That's a neat approach 😄 I hadn't seen that before.

          I keep playing with the doubling approach because it seems to work when the shapes and curves are irregular. Like scaling plus rotation along a bezier curve - just weird.

          Bob

          horny_2a.jpg

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          • O Offline
            outersketcher
            last edited by

            Well, I tried out the skin ruby and was able to join the surfaces of this fairly complex pillar. I can do this now thanks to your patient advice and help. Thank you.
            By the way this is a model of a space habitat. Have yet to figure out how to create a space background for it yet. And it's obvious that I need to study up on how to apply textures correctly. But I'm still pleased with the model.

            David


            The pillar starts out on an oval base that twists to a different sized oval at 90 degree angle and eventually terminates at a square shape


            Yup... gotta work on those textures.... eeyikes.

            "I mostly enjoy not being dead.." -Grandpa

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            • GaieusG Offline
              Gaieus
              last edited by

              Hi Outersketcher,

              You can create a new style with a simple, black background to imitate space (make sure you set your line colour to a bit lighter than black in this case) and/or add an image as a watermark background.

              Of course it is hard to work with an image background but never mind - you can have multiple styles in a model and can even set up different scenes for these different stlyes. Please, ahev a look at the attached file. There is a "Work" scene in it that you can use for - well - working in it (with the "traditional" or "close to default" style settings) and there is a "Space" scene with an image abckground and different style settings. You can easily switch between the two so you can work on your model any time and see the results in "outer space". Also, you can change (or add) the watermark image in the stlyes dialogue any time (it's just an example). Maybe the image isn't really good because teh sun is shining into our eyes... 😕

              Also note that the image size(s) will add up to your file size eventually.

              Looking forward to seeing some nice results of your space habitat! 👍


              Space.skp

              Gai...

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              • O Offline
                outersketcher
                last edited by

                Oooooooh Gaieus.. that .skp file is.... well, really cool! I had no idea we could do that in sketchup. Much better then the old beige background.

                Here's me off running to the manuel to learn about setting up styles...

                "I mostly enjoy not being dead.." -Grandpa

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                • D Offline
                  designerhaylz
                  last edited by

                  hi everyone.

                  I have been trying to learn sketch up for a couple of months now. but I am still struggling to build a 'horn shape'. I have the extruded arc, but want a tapered end like a horn. I cant select the cross sections to reduce them by 90% etc.... help please. I need it done by monday. 😞

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                  • R Offline
                    remus
                    last edited by

                    COuld you post a pic/skp of what youve done so far?

                    http://remusrendering.wordpress.com/

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                    • simon le bonS Offline
                      simon le bon
                      last edited by

                      I am surprised that this type of question does not come up more often on the forums. Yet we often need these kind of shapes whose section is in arithmetic progression along a path.

                      And the least we can say is that SketchUp is quite disarming to address this problem! Take a look at the excellent solutions from GreyHead and VoderVocoder to be convinced.

                      GreyHead:
                      http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/GreyHead_HornTut.jpg

                      (see above for his skp(s)

                      VoderVocoder:
                      http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/VoderVocoder_HornTut.jpg

                      (his skp link is dead. Here is a copy: horny_VoderVocoder.skp

                      I come back on this now outdated thread to reactivate its interest, and because there is now a ruby solution. I want to speak of [Plugin] 2 Faces + Path ver. 1.4. from kirill.
                      A fantastic tool which needs to be studied and tamed..
                      I am using here just a small aspect of its power.


                      we need two faces and a path 🤣

                      http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/Horny_2FacesPath1th.jpg

                      I just begin to study 2Faces+Path and I am far to understand everything. I don't know why I have to rotate my two faces to reach the goal ???


                      http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/Horny_2FacesPath2th.jpg


                      http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/Horny_2FacesPath3th.jpg


                      http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/Horny_2FacesPath4th.jpg


                      http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/Horny_2FacesPath5th.jpg


                      http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/Horny_2FacesPath6th.jpg

                      🤓 simon

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                      • mitcorbM Offline
                        mitcorb
                        last edited by

                        It seems somehow this excellent dialogue should be linked BOTH ways to kirill's plugin post. This being another specific use for the plugin in addition to his videos.
                        Just an idea.

                        I take the slow, deliberate approach in my aimless wandering.

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                        • simon le bonS Offline
                          simon le bon
                          last edited by

                          Hi mitcorb,
                          Thank you for the nice comment!
                          I follow your idea:
                          @unknownuser said:

                          this dialogue should be linked BOTH ways to kirill's plugin post.

                          it is now done [Plugin] 2 Faces + Path ver. 1.4. by Kirill


                          http://i274.photobucket.com/albums/jj245/Spendauballet/SketchUp/Horny_2FacesPath7th.jpg

                          ../simon

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