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    Texture from url?

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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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