Class: MeshAnalyzer

Inherits:
Object
  • Object
show all
Defined in:
lib/ruby3mf/mesh_analyzer.rb

Class Method Summary collapse

Class Method Details

.validate(model_doc) ⇒ Object 



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# File 'lib/ruby3mf/mesh_analyzer.rb', line 68

def self.validate(model_doc)
  root = model_doc.root
  node = root

  if node.name == "model"
    resources = find_child(node, "resources")

    if resources
      resources.children.each do |resource|
        solid_model = resource.attributes["type"].to_s() == "model" or resource.attributes["type"].to_s() == "solidsupport"
        if resource.name == "object" and solid_model
          validate_object(resource)
        end
      end
    end
  end
end

.validate_object(object) ⇒ Object 



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# File 'lib/ruby3mf/mesh_analyzer.rb', line 14

def self.validate_object(object)
  Log3mf.context "verifying object" do |l|
    children = object.children.map { |child| child.name }
    have_override = object.attributes["pid"] or object.attributes["pindex"]
    l.error :object_with_components_and_pid if have_override && children.include?("components")
  end

  Log3mf.context "validating geometry" do |l|
    list = EdgeList.new

    # if a triangle has a pid, then the object needs a pid
    has_triangle_pid = false

    mesh = find_child(object, "mesh")
    if mesh
      triangles = find_child(mesh, "triangles")

      if triangles
        triangles.children.each do |triangle|
          v1 = triangle.attributes["v1"].to_s().to_i()
          v2 = triangle.attributes["v2"].to_s().to_i()
          v3 = triangle.attributes["v3"].to_s().to_i()

          if v1 == v2 || v2 == v3 || v3 == v1
            l.error :non_distinct_indices
          end

          list.add_edge(v1, v2)
          list.add_edge(v2, v3)
          list.add_edge(v3, v1)

          if not has_triangle_pid
            has_triangle_pid = triangle.attributes["pid"] != nil
          end
        end

        has_object_material = object.attributes["pid"] and object.attributes["pindex"]
        if has_triangle_pid and not has_object_material
          l.error :missing_object_pid
        end

        result = list.verify_edges()
        if result == :bad_orientation
          l.fatal_error :resource_3dmodel_orientation
        elsif result == :hole
          l.fatal_error :resource_3dmodel_hole
        elsif result == :nonmanifold
          l.fatal_error :resource_3dmodel_nonmanifold
        end
      end
    end
  end
end