Feat (Edge): support rhino curve types

speckle_connector/bootstrap.rb

@@ -3,6 +3,7 @@
 require 'sketchup'
 require 'pathname'
 require 'speckle_connector/debug'
+require_relative 'src/log/log'
 require_relative 'src/ui/sketchup_ui'
 require_relative 'src/ui/ui_controller'
 require_relative 'src/commands/menu_command_handler'

speckle_connector/src/constants/type_constants.rb

@@ -12,6 +12,9 @@ module SpeckleConnector
 
   OBJECTS_GEOMETRY_LINE = 'Objects.Geometry.Line'
   OBJECTS_GEOMETRY_POLYLINE = 'Objects.Geometry.Polyline'
+  OBJECTS_GEOMETRY_POLYCURVE = 'Objects.Geometry.Polycurve'
+  OBJECTS_GEOMETRY_ARC = 'Objects.Geometry.Arc'
+  OBJECTS_GEOMETRY_CIRCLE = 'Objects.Geometry.Circle'
   OBJECTS_GEOMETRY_MESH = 'Objects.Geometry.Mesh'
   OBJECTS_GEOMETRY_BREP = 'Objects.Geometry.Brep'
 

speckle_connector/src/convertors/clean_up.rb

@@ -17,6 +17,8 @@ module SpeckleConnector
         faces.each { |face| face.edges.each { |edge| edges << edge } }
         edges.uniq!
         edges.each { |edge| remove_edge_have_coplanar_faces(edge, faces, false) }
+        # Remove remaining orphan edges
+        edges.reject(&:deleted?).select { |edge| edge.faces.empty? }.each(&:erase!)
         merged_faces(faces)
       end
 

speckle_connector/src/convertors/to_native.rb

@@ -2,6 +2,7 @@
 
 require_relative 'converter'
 require_relative '../constants/type_constants'
+require_relative '../speckle_entities/speckle_entity'
 require_relative '../speckle_objects/gis/polygon_element'
 require_relative '../speckle_objects/other/transform'
 require_relative '../speckle_objects/other/render_material'
@@ -11,6 +12,9 @@ require_relative '../speckle_objects/other/display_value'
 require_relative '../speckle_objects/revit/revit_instance'
 require_relative '../speckle_objects/geometry/point'
 require_relative '../speckle_objects/geometry/line'
+require_relative '../speckle_objects/geometry/polycurve'
+require_relative '../speckle_objects/geometry/arc'
+require_relative '../speckle_objects/geometry/circle'
 require_relative '../speckle_objects/geometry/mesh'
 require_relative '../speckle_objects/built_elements/view3d'
 require_relative '../speckle_objects/built_elements/network'
@@ -45,6 +49,9 @@ module SpeckleConnector
       # Class aliases
       POINT = GEOMETRY::Point
       LINE = GEOMETRY::Line
+      POLYCURVE = GEOMETRY::Polycurve
+      ARC = GEOMETRY::Arc
+      CIRCLE = GEOMETRY::Circle
       MESH = GEOMETRY::Mesh
       BLOCK_DEFINITION = OTHER::BlockDefinition
       BLOCK_INSTANCE = OTHER::BlockInstance
@@ -59,6 +66,9 @@ module SpeckleConnector
       CONVERTABLE_SPECKLE_TYPES = %w[
         Objects.Geometry.Line
         Objects.Geometry.Polyline
+        Objects.Geometry.Polycurve
+        Objects.Geometry.Arc
+        Objects.Geometry.Circle
         Objects.Geometry.Mesh
         Objects.Geometry.Brep
         Objects.Other.BlockInstance
@@ -76,6 +86,10 @@ module SpeckleConnector
         @from_revit ||= source_app.include?('revit')
       end
 
+      def from_rhino
+        @from_rhino ||= source_app.include?('rhino')
+      end
+
       def from_sketchup
         @from_sketchup ||= source_app.include?('sketchup')
       end
@@ -89,14 +103,9 @@ module SpeckleConnector
       # UI is responsible currently to fetch objects from ObjectLoader module by calling getAndConstruct method.
       # @param obj [Object] speckle commit object.
       def receive_commit_object(obj)
-        # First create layers on the sketchup before starting traversing
-        # @Named Views are exception here. It does not mean a layer. But it is anti-pattern for now.
-        # layers_relation = obj['layers_relation']
-
         unless from_revit
-          layers_relation = SpeckleObjects::Relations::Layers.extract_relations(obj)
           # Create layers and it's folders from layers relation on the model collection.
-          SpeckleObjects::Relations::Layers.to_native(layers_relation, sketchup_model) if layers_relation
+          SpeckleObjects::Relations::Layers.to_native(obj, source_app, sketchup_model)
         end
 
         # By default entities to fill is sketchup model's entities.
@@ -242,7 +251,7 @@ module SpeckleConnector
       # rubocop:disable Metrics/PerceivedComplexity
       def traverse_commit_object(obj, layer, entities)
         if convertible_to_native?(obj)
-          @state = convert_to_native(@state, obj, layer, entities)
+          @state, _converted_entities = convert_to_native(@state, obj, layer, entities)
         elsif obj.is_a?(Hash) && obj.key?('speckle_type')
           return if ignored_speckle_type?(obj)
 
@@ -254,7 +263,7 @@ module SpeckleConnector
             end
           else
             # puts(">>> Found #{obj['speckle_type']}: #{obj['id']} with displayValue.")
-            @state = convert_to_native(@state, obj, layer, entities)
+            @state, _converted_entities = convert_to_native(@state, obj, layer, entities)
           end
         elsif obj.is_a?(Hash)
           obj.each_value { |value| traverse_commit_object(value, layer, entities) }
@@ -274,6 +283,9 @@ module SpeckleConnector
       SPECKLE_OBJECT_TO_NATIVE = {
         OBJECTS_GEOMETRY_LINE => LINE.method(:to_native),
         OBJECTS_GEOMETRY_POLYLINE => LINE.method(:to_native),
+        OBJECTS_GEOMETRY_POLYCURVE => POLYCURVE.method(:to_native),
+        OBJECTS_GEOMETRY_ARC => ARC.method(:to_native),
+        OBJECTS_GEOMETRY_CIRCLE => CIRCLE.method(:to_native),
         OBJECTS_GEOMETRY_MESH => MESH.method(:to_native),
         OBJECTS_GEOMETRY_BREP => MESH.method(:to_native),
         OBJECTS_OTHER_BLOCKDEFINITION => BLOCK_DEFINITION.method(:to_native),
@@ -304,11 +316,11 @@ module SpeckleConnector
           create_layers_from_categories(state, obj, converted_entities)
         end
         # Create speckle entities from sketchup entities to achieve continuous traversal.
-        convert_to_speckle_entities(state, obj, converted_entities)
+        SpeckleEntities::SpeckleEntity.from_speckle_object(state, obj, converted_entities, stream_id)
       rescue StandardError => e
         puts("Failed to convert #{obj['speckle_type']} (id: #{obj['id']})")
         puts(e)
-        return state
+        return state, []
       end
 
       # rubocop:disable Metrics/CyclomaticComplexity
@@ -353,30 +365,9 @@ module SpeckleConnector
       end
 
       # @param state [States::State] state of the application
-      # rubocop:disable Metrics/PerceivedComplexity
-      # rubocop:disable Metrics/CyclomaticComplexity
-      def convert_to_speckle_entities(state, speckle_object, entities)
-        return state if entities.empty?
-
-        speckle_id = speckle_object['id']
-        application_id = speckle_object['applicationId']
-        speckle_type = speckle_object['speckle_type']
-        children = speckle_object['__closure'].nil? ? [] : speckle_object['__closure']
-        speckle_state = state.speckle_state
-        entities.each do |entity|
-          next if entity.is_a?(Sketchup::Material) || entity.is_a?(Sketchup::Page)
-          next if (entity.is_a?(Sketchup::Face) || entity.is_a?(Sketchup::Edge)) &&
-                  !state.user_state.user_preferences[:register_speckle_entity]
-
-          ent = SpeckleEntities::SpeckleEntity.new(entity, speckle_id, application_id, speckle_type, children,
-                                                   [stream_id])
-          ent.write_initial_base_data
-          speckle_state = speckle_state.with_speckle_entity(ent)
-        end
-        state.with_speckle_state(speckle_state)
+      def convert_to_speckle_entities(state, speckle_objects_with_entities)
+        return state if speckle_objects_with_entities.empty?
       end
-      # rubocop:enable Metrics/PerceivedComplexity
-      # rubocop:enable Metrics/CyclomaticComplexity
     end
     # rubocop:enable Metrics/ClassLength
   end

speckle_connector/src/log/log.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+module SpeckleConnector
+  # Helper module for logging.
+  module Log
+    def self.write_to_file(text, file_name = 'log', path = "#{ENV['HOME']}/Desktop")
+      file_path = path + "/#{file_name}.json"
+      File.delete(file_path) if File.exist?(file_path)
+      File.write(file_path, text)
+    end
+  end
+end

speckle_connector/src/speckle_entities/speckle_entity.rb

@@ -119,6 +119,32 @@ module SpeckleConnector
       def valid?
         sketchup_entity.valid?
       end
+
+      # @param state [States::State] state of the application
+      # rubocop:disable Metrics/PerceivedComplexity
+      # rubocop:disable Metrics/CyclomaticComplexity
+      def self.from_speckle_object(state, speckle_object, entities, stream_id)
+        return state, [] if entities.empty?
+
+        speckle_id = speckle_object['id']
+        application_id = speckle_object['applicationId']
+        speckle_type = speckle_object['speckle_type']
+        children = speckle_object['__closure'].nil? ? [] : speckle_object['__closure']
+        speckle_state = state.speckle_state
+        entities.each do |entity|
+          next if entity.is_a?(Sketchup::Material) || entity.is_a?(Sketchup::Page)
+          next if (entity.is_a?(Sketchup::Face) || entity.is_a?(Sketchup::Edge)) &&
+                  !state.user_state.user_preferences[:register_speckle_entity]
+
+          ent = SpeckleEntity.new(entity, speckle_id, application_id, speckle_type, children, [stream_id])
+          ent.write_initial_base_data
+          speckle_state = speckle_state.with_speckle_entity(ent)
+        end
+        new_state = state.with_speckle_state(speckle_state)
+        return new_state, entities
+      end
+      # rubocop:enable Metrics/PerceivedComplexity
+      # rubocop:enable Metrics/CyclomaticComplexity
     end
   end
 end

speckle_connector/src/speckle_objects/built_elements/network.rb

@@ -12,7 +12,7 @@ module SpeckleConnector
 
         def self.to_native(state, network, layer, entities, &convert_to_native)
           network['elements'].each do |element|
-            state = convert_to_native.call(state, element['elements'], layer, entities)
+            state, _converted_entities = convert_to_native.call(state, element['elements'], layer, entities)
           end
 
           return state, []

speckle_connector/src/speckle_objects/built_elements/view3d.rb

@@ -19,7 +19,7 @@ module SpeckleConnector
         # @param direction [SpeckleObjects::Geometry::Vector] direction of the view from eye to target.
         # @param up_direction [SpeckleObjects::Geometry::Vector] up direction of the view.
         # @param is_perspective [Boolean] whether view is perspective or not.
-        # @param lens [Boolean] fov value of the view camera.
+        # @param lens [Numeric] focal length value of the view camera.
         # @param units [String] units of the camera.
         # @param application_id [String] application_id of the view.
         # @param update_properties [Hash{Symbol=>boolean}] properties of the view.
@@ -63,42 +63,44 @@ module SpeckleConnector
           rendering_options = SpeckleObjects::Other::RenderingOptions.to_speckle(page.rendering_options)
           View3d.new(
             page.name, origin, target, direction, SpeckleObjects::Geometry::Vector.new(0, 0, 1, units),
-            cam.perspective?, cam.fov, units, page.name, update_properties, rendering_options
+            cam.perspective?, cam.perspective? ? cam.focal_length : 35, units, page.name,
+            update_properties, rendering_options
           )
         end
 
         # @param state [States::State] state of the speckle app.
         # @param obj [Hash] commit object.
-        # rubocop:disable Metrics/AbcSize
-        # rubocop:disable Metrics/CyclomaticComplexity
-        # rubocop:disable Metrics/PerceivedComplexity
         def self.to_native(state, view, _layer, _entities, &_convert_to_native)
           sketchup_model = state.sketchup_state.sketchup_model
-
           return state, [] unless view['speckle_type'] == 'Objects.BuiltElements.View:Objects.BuiltElements.View3D'
 
           name = view['name'] || view['id']
           return state, [] if sketchup_model.pages.any? { |page| page.name == name }
 
-          origin = view['origin']
-          target = view['target']
-          lens = view['lens'] || 50
-          origin = SpeckleObjects::Geometry::Point.to_native(origin['x'], origin['y'], origin['z'], origin['units'])
-          target = SpeckleObjects::Geometry::Point.to_native(target['x'], target['y'], target['z'], target['units'])
-          view_direction = (origin - target).normalize
-          up = view_direction.parallel?([0, 0, 1]) ? [0, 1, 0] : [0, 0, 1]
-          # Set camera position before creating scene on it.
-          my_camera = Sketchup::Camera.new(origin, target, up, !view['isOrthogonal'], lens)
-          sketchup_model.active_view.camera = my_camera
+          camera = create_camera(view)
+          sketchup_model.active_view.camera = camera
           sketchup_model.pages.add(name)
           page = sketchup_model.pages[name]
           set_page_update_properties(page, view['update_properties']) if view['update_properties']
           set_rendering_options(page.rendering_options, view['rendering_options']) if view['rendering_options']
           return state, [page]
         end
-        # rubocop:enable Metrics/AbcSize
-        # rubocop:enable Metrics/CyclomaticComplexity
-        # rubocop:enable Metrics/PerceivedComplexity
+
+        def self.create_camera(view)
+          origin = view['origin']
+          target = view['target']
+          focal_length = view['lens'] || 35
+          origin = SpeckleObjects::Geometry::Point.to_native(origin['x'], origin['y'], origin['z'], origin['units'])
+          target = SpeckleObjects::Geometry::Point.to_native(target['x'], target['y'], target['z'], target['units'])
+          view_direction = (origin - target).normalize
+          up = view_direction.parallel?([0, 0, 1]) ? [0, 1, 0] : [0, 0, 1]
+          # Set camera position before creating scene on it.
+          is_perspective = !view['isOrthogonal']
+          camera = Sketchup::Camera.new(origin, target, up, is_perspective)
+          camera.focal_length = focal_length if is_perspective
+          camera.height = (origin - target).length * 2 unless is_perspective
+          camera
+        end
 
         # @param page [Sketchup::Page] scene to update -update properties-
         def self.set_page_update_properties(page, update_properties)

speckle_connector/src/speckle_objects/geometry/arc.rb

@@ -0,0 +1,31 @@
+# frozen_string_literal: true
+
+require_relative '../base'
+require_relative '../../constants/type_constants'
+
+module SpeckleConnector
+  module SpeckleObjects
+    module Geometry
+      # Arc object definition for Speckle.
+      class Arc < Base
+        SPECKLE_TYPE = OBJECTS_GEOMETRY_ARC
+
+        # @param [States::State] state of the current application.
+        # @param arc [Object] object represents Speckle Arc.
+        # @param layer [Sketchup::Layer] layer to add {Sketchup::Edge} into it.
+        # @param entities [Sketchup::Entities] entities collection to add {Sketchup::Edge} into it.
+        def self.to_native(state, arc, layer, entities, &_convert_to_native)
+          plane = arc['plane']
+          units = arc['units']
+          origin = Point.to_native(plane['origin']['x'], plane['origin']['y'], plane['origin']['z'], units)
+          normal = Vector.to_native(plane['normal']['x'], plane['normal']['y'], plane['normal']['z'], units)
+          x_axis = Vector.to_native(plane['xdir']['x'], plane['xdir']['y'], plane['xdir']['z'], units)
+          radius = Geometry.length_to_native(arc['radius'], units)
+          edges = entities.add_arc(origin, x_axis, normal, radius, arc['startAngle'], arc['endAngle'])
+          edges.each { |edge| edge.layer = layer }
+          return state, edges
+        end
+      end
+    end
+  end
+end

speckle_connector/src/speckle_objects/geometry/circle.rb

@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+require_relative 'point'
+require_relative 'vector'
+require_relative 'length'
+require_relative '../base'
+require_relative '../../constants/type_constants'
+
+module SpeckleConnector
+  module SpeckleObjects
+    module Geometry
+      # Circle object definition for Speckle.
+      class Circle < Base
+        SPECKLE_TYPE = OBJECTS_GEOMETRY_CIRCLE
+
+        # @param [States::State] state of the current application.
+        # @param circle [Object] object represents Speckle Circle.
+        # @param layer [Sketchup::Layer] layer to add {Sketchup::Edge} into it.
+        # @param entities [Sketchup::Entities] entities collection to add {Sketchup::Edge} into it.
+        def self.to_native(state, circle, layer, entities, &_convert_to_native)
+          plane = circle['plane']
+          units = circle['units']
+          origin = Point.to_native(plane['origin']['x'], plane['origin']['y'], plane['origin']['z'], units)
+          normal = Vector.to_native(plane['normal']['x'], plane['normal']['y'], plane['normal']['z'], units)
+          radius = Geometry.length_to_native(circle['radius'], units)
+          edges = entities.add_circle(origin, normal, radius)
+          edges.each { |edge| edge.layer = layer }
+          return state, edges
+        end
+      end
+    end
+  end
+end

speckle_connector/src/speckle_objects/geometry/line.rb

@@ -60,7 +60,7 @@ module SpeckleConnector
           )
         end
 
-        # @param _state [States::State] state of the application.
+        # @param state [States::State] state of the application.
         # @param line [Object] object represents Speckle line.
         # @param layer [Sketchup::Layer] layer to add {Sketchup::Edge} into it.
         # @param entities [Sketchup::Entities] entities collection to add {Sketchup::Edge} into it.

speckle_connector/src/speckle_objects/geometry/mesh.rb

@@ -119,6 +119,10 @@ module SpeckleConnector
           added_faces = entities.grep(Sketchup::Face).last(native_mesh.polygons.length)
           mesh_layer_name = SketchupModel::Query::Layer.entity_layer_from_path(mesh['layer'])
           mesh_layer = state.sketchup_state.sketchup_model.layers.to_a.find { |l| l.display_name == mesh_layer_name }
+          # Merge only added faces in this scope
+          if model_preferences[:merge_coplanar_faces]
+            added_faces = Converters::CleanUp.merge_coplanar_faces(added_faces)
+          end
           added_faces.each do |face|
             face.layer = mesh_layer unless mesh_layer.nil?
             # Smooth edges if they already soft
@@ -129,10 +133,7 @@ module SpeckleConnector
                 .attribute_dictionaries_to_native(face, mesh['sketchup_attributes']['dictionaries'])
             end
           end
-          # Merge only added faces in this scope
-          if model_preferences[:merge_coplanar_faces]
-            added_faces = Converters::CleanUp.merge_coplanar_faces(added_faces)
-          end
+
           return state, added_faces
         end
         # rubocop:enable Metrics/MethodLength

speckle_connector/src/speckle_objects/geometry/polycurve.rb

@@ -0,0 +1,21 @@
+# frozen_string_literal: true
+
+require_relative '../base'
+require_relative '../../constants/type_constants'
+
+module SpeckleConnector
+  module SpeckleObjects
+    module Geometry
+      # Polycurve object definition for Speckle.
+      # It basically groups the lines-curves under it's `segments` property.
+      class Polycurve < Base
+        SPECKLE_TYPE = OBJECTS_GEOMETRY_POLYCURVE
+
+        def self.to_native(state, polycurve, layer, entities, &convert_to_native)
+          polycurve['displayValue'] = polycurve['segments']
+          convert_to_native.call(state, polycurve, layer, entities)
+        end
+      end
+    end
+  end
+end

speckle_connector/src/speckle_objects/geometry/vector.rb

@@ -1,5 +1,6 @@
 # frozen_string_literal: true
 
+require_relative 'length'
 require_relative '../base'
 
 module SpeckleConnector
@@ -25,6 +26,14 @@ module SpeckleConnector
           self[:z] = z
           self[:units] = units
         end
+
+        def self.to_native(x, y, z, units)
+          Geom::Vector3d.new(
+            Geometry.length_to_native(x, units),
+            Geometry.length_to_native(y, units),
+            Geometry.length_to_native(z, units)
+          )
+        end
       end
     end
   end

speckle_connector/src/speckle_objects/other/block_definition.rb

@@ -122,13 +122,23 @@ module SpeckleConnector
           definition&.entities&.clear!
           definition ||= sketchup_model.definitions.add(definition_name)
 
+          ngon_faces = []
           if geometry.is_a?(Array)
             geometry.each do |obj|
-              state = convert_to_native.call(state, obj, layer, definition.entities)
+              state, added_entities = convert_to_native.call(state, obj, layer, definition.entities)
+              if added_entities.length == 1 && added_entities.first.is_a?(Sketchup::Face)
+                ngon_faces.append(added_entities.first)
+              end
+            end
+          end
+          ngon_faces.each do |f|
+            f.edges.each do |e|
+              e.soft = false
+              e.smooth = false
             end
           end
           if geometry.is_a?(Hash) && !definition_obj['speckle_type'].nil?
-            state = convert_to_native.call(state, geometry, layer, definition.entities)
+            state, _converted_entities = convert_to_native.call(state, geometry, layer, definition.entities)
           end
           # puts("definition finished: #{name} (#{application_id})")
           # puts("    entity count: #{definition.entities.count}")

speckle_connector/src/speckle_objects/other/display_style.rb

@@ -9,7 +9,6 @@ module SpeckleConnector
     module Other
       # DisplayStyle object for layer.
       class DisplayStyle < Base
-
         def initialize(name:, color:, line_type:)
           super(
             speckle_type: OBJECTS_OTHER_DISPLAYSTYLE,

speckle_connector/src/speckle_objects/other/display_value.rb

@@ -22,9 +22,15 @@ module SpeckleConnector
 
           return format_naming_convention([family, type, category, element_id]) unless element_id.nil?
 
-          return "def::#{def_obj['applicationId']}" unless def_obj['applicationId'].nil?
+          name = def_obj['name']
+          return "#{name}::#{def_obj['applicationId']}" if !name.nil? && !def_obj['applicationId'].nil?
 
-          return "def::#{def_obj['id']}"
+          return "#{name}::#{def_obj['id']}" unless name.nil?
+
+          speckle_type = def_obj['speckle_type'].split('.').last
+          return "#{speckle_type}::#{def_obj['applicationId']}" unless def_obj['applicationId'].nil?
+
+          return "#{speckle_type}::#{def_obj['id']}"
         end
 
         def self.format_naming_convention(entries)
@@ -41,6 +47,13 @@ module SpeckleConnector
           name
         end
 
+        # Get instance name as speckle_type if it is structured as `speckle_type::application_id`
+        def self.get_instance_name(definition_name)
+          return definition_name unless definition_name.include?('::')
+
+          definition_name.split('::').first
+        end
+
         # Creates a component definition and instance from a speckle object with a display value
         # @param state [States::State] state of the application.
         def self.to_native(state, obj, layer, entities, &convert_to_native)
@@ -49,11 +62,7 @@ module SpeckleConnector
           obj['name'] = get_definition_name(obj)
 
           state, _definitions = BlockDefinition.to_native(
-            state,
-            obj,
-            layer,
-            entities,
-            &convert_to_native
+            state, obj, layer, entities, &convert_to_native
           )
 
           definition = state.sketchup_state.sketchup_model.definitions[BlockDefinition.get_definition_name(obj)]
@@ -62,7 +71,7 @@ module SpeckleConnector
           t_arr = obj['transform']
           transform = t_arr.nil? ? Geom::Transformation.new : Other::Transform.to_native(t_arr, obj['units'])
           instance = entities.add_instance(definition, transform)
-          instance.name = obj['name'] unless obj['name'].nil?
+          instance.name = get_instance_name(obj['name']) unless obj['name'].nil?
           instance.layer = layer unless layer.nil?
           # Align instance axes that created from display value. (without any transform)
           # BlockInstance.align_instance_axes(instance)

speckle_connector/src/speckle_objects/relations/layer.rb

@@ -11,7 +11,7 @@ module SpeckleConnector
         SPECKLE_TYPE = 'Speckle.Core.Models.Collection'
 
         # rubocop:disable Metrics/ParameterLists
-        def initialize(name:, visible:, is_folder:, line_style: nil, color: nil, layers_and_folders: [],
+        def initialize(name:, visible:, is_folder:, full_path: nil, line_style: nil, color: nil, layers_and_folders: [],
                        application_id: nil)
           super(
             speckle_type: SPECKLE_TYPE,
@@ -23,6 +23,7 @@ module SpeckleConnector
           self[:color] = color
           self[:visible] = visible
           self[:is_folder] =  is_folder
+          self[:full_path] =  full_path unless full_path.nil?
           self[:line_style] = line_style unless line_style.nil?
           self[:collectionType] = 'layer'
           self[:elements] = layers_and_folders if layers_and_folders.any?
@@ -43,14 +44,31 @@ module SpeckleConnector
           folder.add_layer(layer) if folder.is_a?(Sketchup::LayerFolder)
         end
 
-        def self.to_native_layer_folder(speckle_layer_folder, folder, sketchup_model)
-          speckle_layers = speckle_layer_folder[:elements].select { |layer_or_fol| layer_or_fol[:elements].nil? }
+        # Flat layer conversion.
+        def self.to_native_flat_layers(layers_relation, sketchup_model)
+          speckle_layers = layers_relation[:elements]
+
+          elements_to_layers(speckle_layers, sketchup_model)
+        end
+
+        # Converts elements to layers with it's full path.
+        def self.elements_to_layers(elements, sketchup_model)
+          elements.each do |element|
+            element[:name] = element[:full_path]
+            to_native_layer(element, sketchup_model.layers, sketchup_model)
+            elements_to_layers(element[:elements], sketchup_model) unless element[:elements].nil?
+          end
+        end
+
+        # Nested layer conversion with folders.
+        def self.to_native_layer_folder(layers_relation, folder, sketchup_model)
+          speckle_layers = layers_relation[:elements].select { |layer_or_fol| layer_or_fol[:elements].nil? }
 
           speckle_layers.each do |speckle_layer|
             to_native_layer(speckle_layer, folder, sketchup_model)
           end
 
-          speckle_folders = speckle_layer_folder[:elements].reject { |layer_or_fol| layer_or_fol[:elements].nil? }
+          speckle_folders = layers_relation[:elements].reject { |layer_or_fol| layer_or_fol[:elements].nil? }
 
           speckle_folders.each do |speckle_folder|
             sub_folder = folder.add_folder(speckle_folder[:name])

speckle_connector/src/speckle_objects/relations/layers.rb

@@ -22,26 +22,18 @@ module SpeckleConnector
           self[:elements] = layers
         end
 
-        def self.element_to_relation(elements)
-          elements.collect do |element|
-            next unless element['speckle_type'] == SPECKLE_CORE_MODELS_COLLECTION
-
-            is_folder = element['elements'].any? { |e| e['speckle_type'] == SPECKLE_CORE_MODELS_COLLECTION }
-            color = element['color'] || element['displayStyle']['color'] unless element['displayStyle'].nil?
-            Layer.new(
-              name: element['name'],
-              visible: element['visible'],
-              is_folder: is_folder,
-              color: color,
-              layers_and_folders: element_to_relation(element['elements'])
-            )
-          end.compact
-        end
-
-        def self.extract_relations(commit_obj)
+        # Extract relations from commit obj to create layers in advance.
+        # By doing this, also checks layers will be created as flat list or nested structure according to source app.
+        # @param commit_obj [Hash] commit object to extract layer relations.
+        # @param source_app [String] source application to decide layer creation strategy.
+        # Currently for
+        # - Revit: we don't create layers in advance because we create layers according to categories.
+        # - SketchUp: we create layers in advance as nested.
+        # - Rhino: we create layers in advance as flat list with it's full path.
+        def self.extract_relations(commit_obj, source_app)
           return nil unless commit_obj['speckle_type'] == SPECKLE_CORE_MODELS_COLLECTION
 
-          elements = element_to_relation(commit_obj['elements'])
+          elements = element_to_relation(commit_obj['elements'], source_app, [])
 
           Layers.new(
             active: commit_obj['active_layer'],
@@ -49,10 +41,41 @@ module SpeckleConnector
           )
         end
 
-        def self.to_native(layers_relation, sketchup_model)
-          folder = sketchup_model.layers
+        # rubocop:disable Metrics/CyclomaticComplexity
+        def self.element_to_relation(elements, source_app, parent_layers)
+          elements.collect do |element|
+            next unless element['speckle_type'] == SPECKLE_CORE_MODELS_COLLECTION
 
-          SpeckleObjects::Relations::Layer.to_native_layer_folder(layers_relation, folder, sketchup_model)
+            layers_tree = parent_layers.dup.append(element['name'])
+            full_path = ''
+            parent_layers.each { |parent| full_path += "#{parent}::" }
+            full_path += element['name']
+            # Add this info to commit object to check later layer_collection conversion
+            element['full_path'] = full_path if source_app.include?('rhino')
+
+            is_folder = element['elements'].any? { |e| e['speckle_type'] == SPECKLE_CORE_MODELS_COLLECTION }
+            color = element['color'] || element['displayStyle']['color'] unless element['displayStyle'].nil?
+            Layer.new(
+              name: element['name'], visible: element['visible'], is_folder: is_folder,
+              color: color, full_path: full_path,
+              layers_and_folders: element_to_relation(element['elements'], source_app, layers_tree)
+            )
+          end.compact
+        end
+        # rubocop:enable Metrics/CyclomaticComplexity
+
+        def self.to_native(obj, source_app, sketchup_model)
+          layers_relation = extract_relations(obj, source_app)
+          return if layers_relation.nil?
+
+          folder = sketchup_model.layers
+          is_flat = source_app.include?('rhino')
+
+          if is_flat
+            SpeckleObjects::Relations::Layer.to_native_flat_layers(layers_relation, sketchup_model)
+          else
+            SpeckleObjects::Relations::Layer.to_native_layer_folder(layers_relation, folder, sketchup_model)
+          end
 
           active_layer = folder.to_a.find { |layer| layer.display_name == layers_relation['active_layer'] }
           sketchup_model.active_layer = active_layer unless active_layer.nil?

speckle_connector/src/speckle_objects/speckle/core/models/layer_collection.rb

@@ -99,12 +99,13 @@ module SpeckleConnector
               sketchup_model = state.sketchup_state.sketchup_model
               elements = layer_collection['elements']
               name = layer_collection['name']
+              name = layer_collection['full_path'] if layer_collection['full_path']
 
               layer = sketchup_model.layers.find { |l| l.display_name == name }
               layer_or_folder = layer if layer
 
               elements.each do |element|
-                new_state = convert_to_native.call(state, element, layer_or_folder, entities)
+                new_state, _converted_entities = convert_to_native.call(state, element, layer_or_folder, entities)
                 state = new_state
               end
 

speckle_connector/src/speckle_objects/speckle/core/models/model_collection.rb

@@ -66,7 +66,7 @@ module SpeckleConnector
               elements = model_collection['elements']
 
               elements.each do |element|
-                new_state = convert_to_native.call(state, element, layer, entities)
+                new_state, _converted_entities = convert_to_native.call(state, element, layer, entities)
                 state = new_state
               end