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    Anamorphic Reflection Illusion on Horisontal Surface

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    • P Offline
      pipinek
      last edited by

      Greeting and Merry Christmas and Happy, Normal New Year to all of you,

      I have been searching for an exact replication/presentation of a building reflection on a horisontal surface.
      The effect should be perceived as an Reflection, as if in mirror, or water surface but on a mate surface of the front square.

      A person standing in front of the building should see, perceived an 'Reflection’ of the facade.

      I would be truly grateful for any geometric construction suggestions using Sketchup, or perhaps some useful plugin?

      Hope I have managed to make myself understood.
      Many thanks in advance with the repetition of my above wishes.

      PS
      Oops, I have just noticed that is far probable that my post has been not placed in the better place on the forum.
      I apologize and would be thankful if the admin could redirected it to the very appreciate section.

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      • P Offline
        pipinek
        last edited by

        @dave r said:

        Would something like this work?
        [attachment=0:1r7nd7e5]<!-- ia0 -->SlantTopDesk.png<!-- ia0 -->[/attachment:1r7nd7e5]

        Hullo,

        Thank you very much for your response.
        Exactly, well, I think it could work in my very case.

        Here is some precision.

        I am about to propose an illusion of reflection on a paved surface in front of a cathedral.
        It could be perceived from a certain distance of a person placed in a central axis in front of the facade.

        I am aware that it is possible to achieve the effect by some amount of manual constructions within Sketchup (a mirror of the facade and tracing some line to the elevation be projected on the plane, etc).
        This way though seem to me a bit inexact. I am anxious about the most precise exactitude. The is a risk that the proposition would be put into reality.

        I will appreciate any guidance of the experienced user cause I have been still not the smartest... in this room.
        Thank you in advance with my best regards.

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        • P Offline
          pipinek
          last edited by

          I am afraid it is not the effect I am aiming.

          Perhaps these two images will help me to make myself understood.

          A - Cathedral
          B - Projected on a horizontal the emulation of the reflection (C)-on the picture this is simple projection/rotation of A/C
          C - Flipped form/facade - 'reflection'

          The goal is to reproduce the perception of C by the deformed adequately the form B (simple projection/rotation will be seen in perspective as the flatten, rotated facade and NOT as a reflection.

          I have been looking for a method of conceive the form B to represent the C one as it is on the horizontal surface.

          Hope it is a bit less confusing.

          https://s20.postimg.org/ygcwt7uwd/image.jpg

          https://s20.postimg.org/fb9njhb3h/image.jpg

          Google Search

          favicon

          (www.google.ca)

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          • gillesG Offline
            gilles
            last edited by

            A quick method:
            draw a vertical line at the height of your POV
            set the view to front view and use position camera tool
            Create a scene
            the underground shape is a group, extrude it to the POV
            Use FredoScale Taper on the front face, enter scale= 0.001
            move the front face at the end of the POV
            select the ground face and intersect with the model
            delete the group
            go to your scene… You get it.

            Note that you may have to modify camera angle and the distance of the POV to see all the "reflection".

            " c'est curieux chez les marins ce besoin de faire des phrases "

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            • pilouP Offline
              pilou
              last edited by

              Maybe there is also a Tig plugin who can help you

              Radial Lines
              or Radial lines fixed

              http://forum.zbrush.fr/index.php?action=dlattach;topic=1622.0;attach=13997;image

              http://forum.zbrush.fr/index.php?action=dlattach;topic=1622.0;attach=13998;image

              Frenchy Pilou
              Is beautiful that please without concept!
              My Little site :)

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              • P Offline
                pipinek
                last edited by

                @gilles said:

                A quick method....

                Note that you may have to modify camera angle and the distance of the POV to see all the "reflection".

                Merci beaucoup Gilles, c’est exactement ce dont j’ai besoin.

                I will digest it and make some exercises. The effect is really satisfying. At least this virtual one above.
                I you do not mind I will far probably allow myself to contact you for, eventually some precision and of course proudly show you the final result of my work within SU.

                You have mentioned at the beginning that this has been a quick way, what should be the 'slow' one?
                Is it possible to reduce a distance between the facade and the most far point of its projection on the horizontal surface in front of it, I mean the highest point project of the elevation?

                You have advised to use 0.001 scale factor, what if I use meters as units?

                I am really thankful for your elucidation such well illustrated, explained.

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                • P Offline
                  pipinek
                  last edited by

                  Thank you very much pilou. I will certainly give a try.
                  My best wishes.

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                  • gillesG Offline
                    gilles
                    last edited by

                    @pipinek said:

                    @gilles said:

                    A quick method....

                    Note that you may have to modify camera angle and the distance of the POV to see all the "reflection".

                    Merci beaucoup Gilles, c’est exactement ce dont j’ai besoin.

                    I will digest it and make some exercises. The effect is really satisfying. At least this virtual one above.
                    I you do not mind I will far probably allow myself to contact you for, eventually some precision and of course proudly show you the final result of my work within SU.

                    You have mentioned at the beginning that this has been a quick way, what should be the 'slow' one?
                    Is it possible to reduce a distance between the facade and the most far point of its projection on the horizontal surface in front of it, I mean the highest point project of the elevation?

                    You have advised to use 0.001 scale factor, what if I use meters as units?

                    I am really thankful for your elucidation such well illustrated, explained.

                    I wrote " A quick method:" because it's fast.
                    Scale as nothing to do with units, 0.001 is 1/1000 whatever the unit just to see the face and being able to manipulate it without over zooming.

                    "Is it possible to reduce a distance between the facade and the most far point of its projection on the horizontal surface in front of it, I mean the highest point project of the elevation?"

                    I set the Point Of View to see everything on the screen, but in reality do not forget that your eyes are not static and you can reduce the distance between the facade an the POV but what will you see on the screen?

                    Experiment then feedback.

                    Note: I won't have internet for a week, take your time.

                    Happy new year.

                    " c'est curieux chez les marins ce besoin de faire des phrases "

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