do not merge - hack for exporting gridlines - each edge is a separate polyline

SpeckleLib/Speckle/Primitive/Mesh/Mesh.cpp

@@ -19,6 +19,10 @@ namespace {
 		vertexID,
 		faceID,
 		colorID,
+		pointID,
+		closedID,
+		lengthID,
+		areaID,
 	};
 
 		///Serialisation field IDs
@@ -26,6 +30,10 @@ namespace {
 		Identity{"vertices"},
 		Identity{"faces"},
 		Identity{"colors"},
+		Identity{"value"},
+		Identity{"closed"},
+		Identity{"length"},
+		Identity{"area"},
 	};
 
 }
@@ -53,6 +61,13 @@ void Mesh::appendFace(const std::vector<double>& vertices) {
 	return: True if the package has added items to the inventory
   --------------------------------------------------------------------*/
 bool Mesh::fillInventory(Inventory& inventory) const {
+	if (isPolyline)
+		return fillInventoryPolyline(inventory);
+	else
+		return fillInventoryMesh(inventory);
+} //Mesh::fillInventory
+
+bool Mesh::fillInventoryMesh(Inventory& inventory) const {
 	using enum Entry::Type;
 	inventory.merge(Inventory{
 		{
@@ -60,9 +75,22 @@ bool Mesh::fillInventory(Inventory& inventory) const {
 			{ fieldID[faceID], faceID, element },
 			{ fieldID[colorID], colorID, element },
 		},
-	}.withType(&typeid(Mesh)));
+		}.withType(&typeid(Mesh)));
 	return base::fillInventory(inventory);
-} //Mesh::fillInventory
+}
+
+bool Mesh::fillInventoryPolyline(Inventory& inventory) const {
+	using enum Entry::Type;
+	inventory.merge(Inventory{
+		{
+			{ fieldID[pointID], pointID, element },
+			{ fieldID[closedID], closedID, element },
+			{ fieldID[lengthID], lengthID, element },
+			{ fieldID[areaID], areaID, element },
+		},
+		}.withType(&typeid(Mesh)));
+	return base::fillInventory(inventory);
+}
 
 
 /*--------------------------------------------------------------------
@@ -73,20 +101,46 @@ bool Mesh::fillInventory(Inventory& inventory) const {
 	return: The requested cargo (nullptr on failure)
   --------------------------------------------------------------------*/
 Cargo::Unique Mesh::getCargo(const Inventory::Item& item) const {
+	if (isPolyline)
+		return getCargoPolyline(item);
+	else
+		return getCargoMesh(item);
+	
+} //Mesh::getCargo
+
+Cargo::Unique Mesh::getCargoMesh(const Inventory::Item& item) const {
 	if (item.ownerType != &typeid(Mesh))
 		return base::getCargo(item);
 	using namespace active::serialise;
 	switch (item.index) {
 	case vertexID:
-			return std::make_unique<ContainerWrap<std::vector<double>>>(m_vertices);
-		case faceID:
-			return std::make_unique<ContainerWrap<std::vector<int>>>(m_faces);
-		case colorID:
-			return std::make_unique<ContainerWrap<std::vector<int>>>(m_colors);
-		default:
-			return nullptr;	//Requested an unknown index
+		return std::make_unique<ContainerWrap<std::vector<double>>>(m_vertices);
+	case faceID:
+		return std::make_unique<ContainerWrap<std::vector<int>>>(m_faces);
+	case colorID:
+		return std::make_unique<ContainerWrap<std::vector<int>>>(m_colors);
+	default:
+		return nullptr;	//Requested an unknown index
 	}
-} //Mesh::getCargo
+}
+
+Cargo::Unique Mesh::getCargoPolyline(const Inventory::Item& item) const {
+	if (item.ownerType != &typeid(Mesh))
+		return base::getCargo(item);
+	using namespace active::serialise;
+	switch (item.index) {
+	case pointID:
+		return std::make_unique<ContainerWrap<std::vector<double>>>(m_points);
+	case closedID:
+		return std::make_unique<ValueWrap<bool>>(isClosed);
+	case lengthID:
+		return std::make_unique<ValueWrap<double>>(length);
+	case areaID:
+		return std::make_unique<ValueWrap<double>>(area);
+	default:
+		return nullptr;	//Requested an unknown index
+	}
+}
 
 
 /*--------------------------------------------------------------------

SpeckleLib/Speckle/Primitive/Mesh/Mesh.h

@@ -44,13 +44,23 @@ namespace speckle::primitive {
 				active::measure::LengthType unit = active::measure::LengthType::metre) :
 				base{utility::Guid{true}, utility::Guid{}, unit}, m_vertices{std::move(vertices)}, m_faces{std::move(faces)}, m_colors{std::move(colors)}, m_finish{finish} {}
 
+		Mesh(std::vector<double>&& points, const record::attribute::Finish& finish,
+			active::measure::LengthType unit = active::measure::LengthType::metre) :
+			base{ utility::Guid{true}, utility::Guid{}, unit }, m_points{ std::move(points) }, m_finish{ finish } {}
+		
 		// MARK: - Functions (const)
 		
 		/*!
 		 Get the speckle type identifier
 		 @return The speckle type (relevant objects should override as required)
 		 */
-		speckle::utility::String getSpeckleType() const override { return "Objects.Geometry.Mesh"; }
+		speckle::utility::String getSpeckleType() const override 
+		{ 
+			if (isPolyline)
+				return "Objects.Geometry.Polyline";
+			else
+				return "Objects.Geometry.Mesh";
+		}
 
 		/*!
 		 Append a single face to the Mesh given by the vertices
@@ -66,23 +76,35 @@ namespace speckle::primitive {
 		 @return True if the package has added items to the inventory
 		 */
 		bool fillInventory(active::serialise::Inventory& inventory) const override;
+		bool fillInventoryMesh(active::serialise::Inventory& inventory) const;
+		bool fillInventoryPolyline(active::serialise::Inventory& inventory) const;
 		/*!
 		 Get the specified cargo
 		 @param item The inventory item to retrieve
 		 @return The requested cargo (nullptr on failure)
 		 */
 		active::serialise::Cargo::Unique getCargo(const active::serialise::Inventory::Item& item) const override;
+		active::serialise::Cargo::Unique getCargoMesh(const active::serialise::Inventory::Item& item) const;
+		active::serialise::Cargo::Unique getCargoPolyline(const active::serialise::Inventory::Item& item) const;
 		/*!
 		 Use a manager in (de)serialisation processes
 		 @param management The management to use
 		 */
 		void useManagement(active::serialise::Management* management) const override;
 
+		void setToPolyline() { isPolyline = true; }
+		
 	private:
 		std::vector<double> m_vertices;
+		std::vector<double> m_points;
 		std::vector<int> m_faces;
 		std::vector<int> m_colors;
 		record::attribute::Finish m_finish;
+
+		bool isPolyline = false;
+		bool isClosed = false;
+		double length = 2.0;
+		double area = 0.0;
 	};
 	
 }

SpeckleLib/Speckle/Record/Element/ModelElement.cpp

@@ -17,6 +17,7 @@
 #include <ModelElement.hpp>
 #include <ModelMaterial.hpp>
 #include <ModelMeshBody.hpp>
+#include <ModelEdge.hpp>
 #include <Sight.hpp>
 #endif
 
@@ -32,6 +33,8 @@ using namespace speckle::utility;
 #include <array>
 #include <memory>
 
+#include <stack>
+
 namespace speckle::record::element {
 
 	class ModelElement::Data {
@@ -240,6 +243,8 @@ void ModelElement::resetCache() {
   --------------------------------------------------------------------*/
 ModelElement::Body* ModelElement::getBody() const {
 #ifdef ARCHICAD
+	ModelerAPI::Material tmpmat{};
+
 	if (m_data && m_data->m_cache)
 		return m_data->m_cache.get();
 	void* dummy = nullptr;
@@ -271,6 +276,52 @@ ModelElement::Body* ModelElement::getBody() const {
 			ModelerAPI::MeshBody body{};
 			elem.GetTessellatedBody(bodyIndex, &body);
 			Int32 polyCount = body.GetPolygonCount();
+
+			if (polyCount == 0)
+			{
+				std::vector<int> vertexIndices;
+				
+				Int32 edgeCount = body.GetEdgeCount();
+				ModelerAPI::Edge edge{};
+				for (Int32 edgeIndex = 1; edgeIndex <= edgeCount; ++edgeIndex)
+				{
+					body.GetEdge(edgeIndex, &edge);
+					vertexIndices.push_back(edge.GetVertexIndex1());
+					vertexIndices.push_back(edge.GetVertexIndex2());
+				}
+				vertexIndices.push_back(edge.GetVertexIndex2());
+				vertexIndices.push_back(edge.GetVertexIndex2());
+
+				for (int i = 0; i < vertexIndices.size(); i += 2) {
+					ModelerAPI::Vertex v1{};
+					ModelerAPI::Vertex v2{};
+					body.GetVertex(vertexIndices[i], &v1);
+					body.GetVertex(vertexIndices[i + 1], &v2);
+
+					std::vector<double> points{};
+
+					points.push_back(v1.x);
+					points.push_back(v1.y);
+					points.push_back(v1.z);
+
+					points.push_back(v2.x);
+					points.push_back(v2.y);
+					points.push_back(v2.z);
+
+					points.push_back(v2.x);
+					points.push_back(v2.y);
+					points.push_back(v2.z);
+
+					record::attribute::Finish f(tmpmat);
+					primitive::Mesh mesh(std::move(points), f);
+					mesh.setToPolyline();
+					elementBody->push_back(mesh);
+
+					points.clear();
+				}
+			}
+
+
 			for (Int32 polyIndex = 1; polyIndex <= polyCount; ++polyIndex) {
 				ModelerAPI::Polygon polygon{};
 				body.GetPolygon(polyIndex, &polygon);
@@ -281,6 +332,8 @@ ModelElement::Body* ModelElement::getBody() const {
 				if (faceFinish == nullptr) {
 					ModelerAPI::Material material{};
 					polygon.GetMaterial(&material);
+					///
+					tmpmat = material;
 					Finish finish{material};
 					faceFinish = ModelElement::cacheFinish(finishID, finish);
 				}
@@ -308,6 +361,13 @@ ModelElement::Body* ModelElement::getBody() const {
 	}
 	for (auto& [materialName, mesh] : materialMeshMap)
 		elementBody->push_back(std::move(mesh));
+
+	/*std::vector<double> points = {0, 0, 0, 1, 0, 0, 1, 1, 0, 1, 1, 0};
+	record::attribute::Finish f(tmpmat);
+	primitive::Mesh mesh(std::move(points), f);
+	mesh.setToPolyline();
+	elementBody->push_back(mesh);*/
+
 	m_data = std::make_unique<Data>();
 	m_data->m_cache.reset(elementBody);
 	return m_data->m_cache.get();