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    Texture from url?

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    • B Offline
      Ben_M
      last edited by

      Hello!

      Has anyone made any progress on a simple, cross platform solution to this in the past few months?

      Thanks,

      Ben

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      • V Offline
        Viskiz
        last edited by

        I solved in on Windows platform.
        In my script installation I included ruby lib files needed for http, so users will have them after installing script.
        The code followed in script:

        $LOAD_PATH << File.join(MY_PLUGIN_HOME, "bin", "rblib")
        Sketchup::require 'uri'
        Sketchup::require 'net/http'

        Installer for MAC OS should have different ruby library files I think. I haven't MAC yet, so I can't tell any more. Let me know if you solve it.

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        • J Offline
          Jim
          last edited by

          You may be interested in this plugin effort - downlod files plugin using the cUrl library.

          Hi

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          • K Offline
            kaas
            last edited by

            Digging up this old thread because I'm trying to do almost the same as the OP. Since the last post in this topic, Ruby has been updated so I'm hoping its more simple now.

            I have been trying several methods. This code saves the image in the local documents folder so I could pick it up there etc.

            require 'net/http'
            Net;;HTTP.start("www.google.nl") do |http|
                resp = http.get("/images/branding/googlelogo/1x/googlelogo_color_272x92dp.png")
                open("googlelogo_color_272x92dp.png", "wb") do |file|
                    file.write(resp.body)
                end
            end
            puts "Done"
            

            Problem is, my images need a different type of url. Something like:
            https://url/coordinates/?key=1234abc&index=0
            This sort of link doesn't work in the code above.

            Another method I'm trying is loading the image in a webdialog and then grabbing it from Ruby.

            The test html code (the url could easily replaced with the actual https code) is:

            <!DOCTYPE html>
            <html><head></head><body>
            <img id ="webimage" src = "https://www.google.nl/images/branding/googlelogo/1x/googlelogo_color_272x92dp.png">
            </body></html>
            

            And to grab the image in ruby:
            img = @wd.get_element_value('webimage')

            Of course this doesn't work because the image isn't a value. I'm stuck.

            Anyone has a suggestion? That would be very welcome.

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            • TIGT Offline
              TIG Moderator
              last edited by

              Something like this should work:

              require('open-uri')
              fail = false
              url = "http://www.google.nl/images/branding/googlelogo/1x/googlelogo_color_272x92dp.png"
              file = File.join(Dir.pwd, File.basename(url))
              begin
              	download = open(url)
              rescue Exception => error
              	puts "#{error}"
              	fail = true
              end
              unless fail
              	begin
              		File.delete(file) ### in case it exists
              	rescue
              		###
              	end
              	begin
              		IO.copy_stream(download, file)
              	rescue Exception => error
              		puts "#{error}"
              	end
              end
              
              

              It should work with a 'php' formatted URL, but remember that then you need to parse out the file name another way. Perhaps [assuming 'key=' gives the file name] split the URL at '?', then take [1], then split at '&', then find the array element starting "key=", then split that at '=' and then [1] is the file name given by 'key=' ?
              I also saved the downloaded image file in the 'current directory', but you can of course choose any other folder you want...

              TIG

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              • K Offline
                kaas
                last edited by

                Thanks for the reply TIG. Your code does download a file but when trying to open it I get:
                Decode Error! Invalid or unsupported PNG file

                Edit:
                I was also trying with net/http. It does work with simple files but the actual https request still fails.

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                • K Offline
                  kaas
                  last edited by

                  In case someone runs into the same question. It seems to work now.

                  require 'net/http'
                  require 'tempfile'
                  
                  uri = URI('https://www.google.nl/images/branding/googlelogo/1x/googlelogo_color_272x92dp.png')
                  
                  model = Sketchup.active_model
                  materials=model.materials
                  m = materials.add "Test Color"
                  loc = ''
                  
                  begin
                  	request = Net;;HTTP;;Get.new uri
                  	Net;;HTTP.start(uri.host, uri.port,
                    ;use_ssl => uri.scheme == 'https') do |http|
                  	  http.request(request)
                  	  response = http.request request # Net;;HTTPResponse object
                  		file = Tempfile.new(['foo','.png'], Dir.tmpdir, 'wb+')
                  	  begin
                  			file.binmode
                  			file.write(response.body)
                  			file.flush
                  			loc = file.path.gsub("/", '\\\\\\')
                  	  ensure
                  			file.close
                  	  end
                  	end
                  rescue Exception => e  
                    puts e.message 
                  end
                  
                  m.texture = loc
                  m.texture.size = [m.texture.image_width.to_m, m.texture.image_height.to_m]
                  
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                  • D Offline
                    driven
                    last edited by

                    for completeness you need a conditional for osx

                    
                     loc = file.path if Sketchup.platform == ;platform_osx 
                    

                    john

                    learn from the mistakes of others, you may not live long enough to make them all yourself...

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                    • Dan RathbunD Offline
                      Dan Rathbun
                      last edited by

                      When a image is loaded as a web page resource, it is present in the "Temporary Internet files" folder. But some security settings might prevent the copying of a file from there to a trusted local folder.

                      Anyway:
                      require "FileUtils"

                      then try the copy method.

                      See: http://ruby-doc.org/stdlib-2.0.0/libdoc/fileutils/rdoc/index.html

                      I'm not here much anymore.

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                      • K Offline
                        kaas
                        last edited by

                        John and Dan, good suggestions. Thanks

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                        • thomthomT Offline
                          thomthom
                          last edited by

                          When you say different type of URL, what do you mean? HTTPS?

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

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                          • K Offline
                            kaas
                            last edited by

                            @thomthom said:

                            When you say different type of URL, what do you mean? HTTPS?

                            Yes, something like https://url/coordinates/?key=1234abc&index=0

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                            • thomthomT Offline
                              thomthom
                              last edited by

                              For HTTPS connections you need to enable SSL when you create the HTTP connection.
                              Note that there's a bug in Ruby that shipped with SU2014-2016 that might cause problems under Windows where the shipped SSL certificates might not work.

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

                              1 Reply Last reply Reply Quote 0
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