DWG Batch to JPEG Exporter for SketchUp

require 'sketchup.rb'

require 'fileutils'

module DWG_JPEG_BatchExporter

  def self.run

    model = Sketchup.active_model

    view = model.active_view

    # Select root folder

    root = UI.select_directory(title: "Select Folder With DWG Files")

    return unless root

    dwg_paths = Dir.glob(File.join(root, '**', '*.dwg'))

    if dwg_paths.empty?

      UI.messagebox("No DWG files found.")

      return

    end

    dwg_paths.each do |dwg|

      puts "Processing: #{dwg}"

      begin

        # Clear model

        model.entities.clear!

        # Import DWG

        import_success = model.import(dwg, {

          :show_summary => false,

          :merge_coplanar_faces => true

        })

        unless import_success

          puts "  Failed to import: #{dwg}"

          next

        end

        # Set Top View + Parallel Projection

        cam = Sketchup::Camera.new(

          [0, 0, 1000],   # eye

          [0, 0, 0],      # target

          [0, 1, 0]       # up

        )

        cam.perspective = false

        view.camera = cam

        view.zoom_extents

        # Style: white background, no sky/ground, no shadows or axes

        opts = model.rendering_options

        opts["BackgroundColor"] = Sketchup::Color.new(255, 255, 255)

        opts["DisplaySky"] = false

        opts["DisplayGround"] = false

        opts["DisplayShadows"] = false

        opts["DisplayAxes"] = false

        opts["EdgeDisplayMode"] = 1  # Normal edges only

        # Export image with same base name

        base = File.basename(dwg, '.dwg')

        jpg_path = File.join(File.dirname(dwg), "#{base}.jpg")

        view.write_image({

          :filename => jpg_path,

          :width => 1920,

          :height => 1080,

          :antialias => true,

          :compression => 0.9

        })

        puts "  Exported JPEG: #{jpg_path}"

        model.entities.clear!

        GC.start

      rescue => e

        puts "  Error with #{dwg}: #{e.message}"

      end

    end

    UI.messagebox("Finished exporting all DWG files.")

  end

end

DWG_JPEG_BatchExporter.run