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    [Plugin] Raytracer

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    • FrederikF Offline
      Frederik
      last edited by

      Thanks a lot, Thomas...!!
      Just tested it with SU8 and it seem to be working excellent...! πŸ˜„
      (I'll remember to drop a cookie soon... πŸ˜‰ )

      Cheers
      Kim Frederik

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      • EarthMoverE Offline
        EarthMover
        last edited by

        Nice bro. You are on FIRE today!!! I look forward to when you get the drop by geometry working!

        3D Artist at Clearstory 3D Imaging
        Guide Tool at Winning With Sketchup
        Content Creator at Skapeup

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        • thomthomT Offline
          thomthom
          last edited by

          You and me both. That is turning out to be a brain twister.

          Thomas Thomassen β€” SketchUp Monkey & Coding addict
          List of my plugins and link to the CookieWare fund

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          • P Offline
            Panga
            last edited by

            Thanks a lot Thomthom, exactly what I requested a month ago for evaluating covisibility on a terrain !!

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            • olisheaO Offline
              olishea
              last edited by

              can you post an example of how this works please? just couple of images will do......pretty please β˜€

              oli

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              • thomthomT Offline
                thomthom
                last edited by

                @olishea said:

                can you post an example of how this works please? just couple of images will do......pretty please β˜€

                Done.

                I found a bug in my plugin - so you want to update it and TT_Lib2.

                I also found there is a nasty bug in SU8 that cause bogus results in the ray-tracing. I'm looking into this one - trying to work out way to work around it.

                Thomas Thomassen β€” SketchUp Monkey & Coding addict
                List of my plugins and link to the CookieWare fund

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                • thomthomT Offline
                  thomthom
                  last edited by

                  Found a workaround. Please update TT_Lib2 to version 2.1.1.

                  Thomas Thomassen β€” SketchUp Monkey & Coding addict
                  List of my plugins and link to the CookieWare fund

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                  • P Offline
                    Panga
                    last edited by

                    Thomthom,

                    Thanks again for this plugin, but can I suggest you another function for this script. I need to make a raytrace from on point in every direction in order to see where rays intersect a terrain for example. I know that could generates a lot of rays and calculation, but It would be nice to have this function with maybe an option where we can choose the number of rays like : 1 to 10 rays / 10 o 100 rays / 100 to 1 000 rays. If it's possible, the rays should be drawn as guidelines, and a guide point could be automatically drawn on each intersection with the rest of the model.

                    I don't know if you can do that...just and idea for my workflow that can be helpfull for others maybe.

                    Thanks.

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                    • thomthomT Offline
                      thomthom
                      last edited by

                      @panga said:

                      I need to make a raytrace from on point in every direction

                      😲

                      @unknownuser said:

                      I know that could generates a lot of rays and calculation, but It would be nice to have this function with maybe an option where we can choose the number of rays like : 1 to 10 rays / 10 o 100 rays / 100 to 1 000 rays.

                      I say, yes, it'd be a whole lot of rays. So, would it be like sub-dividing a sphere and shoot a ray for every segment?

                      @panga said:

                      If it's possible, the rays should be drawn as guidelines, and a guide point could be automatically drawn on each intersection with the rest of the model.

                      YEs, can draw them a guidelines, yes. But how many points of origins are we talking about? There'd a huge amount of CLines. Would there be a limit to how far they reached? Would it be ok to draw only the rays that hit something?
                      Do the rays need to ignore other geometry other than the target group/component?

                      Thomas Thomassen β€” SketchUp Monkey & Coding addict
                      List of my plugins and link to the CookieWare fund

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                      • P Offline
                        Panga
                        last edited by

                        @unknownuser said:

                        YEs, can draw them a guidelines, yes. But how many points of origins are we talking about?

                        For my specific usage, there's two possibilities and the first one of them could be already fanstastic:

                        1. From one point at time
                        2. From one complex object (component or group)

                        @unknownuser said:

                        There'd a huge amount of CLines. Would there be a limit to how far they reached? Would it be ok to draw only the rays that hit something?
                        Do the rays need to ignore other geometry other than the target group/component?

                        Yes, Yes and Yes. In fact I only need to evaluate "covisibility". So I could select a point on my model (or a complex object) and the plugin draw a certain number of rays only where there's intersections with the model, or with a specific component/group if it's easier to implement/calculate.

                        @unknownuser said:

                        So, would it be like sub-dividing a sphere and shoot a ray for every segment?

                        This could be a good solution with a sphere that surrounds the whole model.

                        Thanks for your answer.

                        Regards.

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                        • thomthomT Offline
                          thomthom
                          last edited by

                          @panga said:

                          @unknownuser said:

                          So, would it be like sub-dividing a sphere and shoot a ray for every segment?

                          This could be a good solution with a sphere that surrounds the whole model.

                          I didn't mean to put an actual sphere in the model, just how one would determine which of the infinite possible directions the rays should be shot. What I meant by the sphere was they the ray's be evenly distributed based on how many rays one shoot.

                          Thomas Thomassen β€” SketchUp Monkey & Coding addict
                          List of my plugins and link to the CookieWare fund

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                          • P Offline
                            Panga
                            last edited by

                            @unknownuser said:

                            I didn't mean to put an actual sphere in the model, just how one would determine which of the infinite possible directions the rays should be shot. What I meant by the sphere was they the ray's be evenly distributed based on how many rays one shoot.

                            Yes I understood you. And controlling the number of segments/faces of the "virtual sphere" could help to have more or less rays. Whatever you can do for that, thanks in advance.

                            EDIT : In fact, what could be really nice is a "sun" or a omnilight that I could place wherever I want in my SU model, and with shadows activated I could see the illuminated parts of my models and the dark ones...

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                            • thomthomT Offline
                              thomthom
                              last edited by

                              I'm writing this down in the todo list. Will see what I can do.

                              Thomas Thomassen β€” SketchUp Monkey & Coding addict
                              List of my plugins and link to the CookieWare fund

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                              • thomthomT Offline
                                thomthom
                                last edited by

                                hmm.... I'm not quite sure how to calculate the rays to shoot. Been all too long since I've done math like this...

                                Thomas Thomassen β€” SketchUp Monkey & Coding addict
                                List of my plugins and link to the CookieWare fund

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                                • P Offline
                                  Panga
                                  last edited by

                                  My knowledge in maths are very limited...so I'll not be able to help you on that. Anyway, thanks for giving it a try !! πŸ˜‰

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                                  • thomthomT Offline
                                    thomthom
                                    last edited by

                                    Found a solution! πŸ˜„

                                    Thomas Thomassen β€” SketchUp Monkey & Coding addict
                                    List of my plugins and link to the CookieWare fund

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                                    • P Offline
                                      Panga
                                      last edited by

                                      I had no doubt about that !! πŸ˜‰

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                                      • thomthomT Offline
                                        thomthom
                                        last edited by

                                        When I say I I mean, someone smarter than me helped me out. πŸ˜‰

                                        Thomas Thomassen β€” SketchUp Monkey & Coding addict
                                        List of my plugins and link to the CookieWare fund

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                                        • P Offline
                                          Panga
                                          last edited by

                                          Whatever if someone helped you or not, you were the one looking for the solution...so you found it ! πŸ˜›

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                                          • A Offline
                                            artupato
                                            last edited by

                                            sir Thomthom,
                                            thank you very much for this plugin.
                                            what a coincidence! This day I've been thinking of raytracing and what is its concept. I think I'll understand this once I use your plugin and of course read some notes about it. πŸ˜„

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