1 files changed, 91 insertions, 0 deletions
diff --git a/assetFactory/faceController.cpp b/assetFactory/faceController.cpp
new file mode 100644
index 0000000..b485c80
--- /dev/null
+++ b/assetFactory/faceController.cpp
@@ -0,0 +1,91 @@
+#include "faceController.h"
+#include "collections.hpp"
+#include "maths.h"
+#include "modelFactoryMesh.h"
+
+void
+FaceController::apply(ModelFactoryMesh & mesh, const StyleStack & parents, const std::string & name,
+		Shape::CreatedFaces & faces) const
+{
+	const auto getAdjacentFaceName = [&mesh](const auto & ofrange, OpenMesh::FaceHandle nf) -> std::string {
+		const auto nfrange = mesh.ff_range(nf);
+		if (const auto target = std::find_first_of(ofrange.begin(), ofrange.end(), nfrange.begin(), nfrange.end());
+				target != ofrange.end()) {
+			return mesh.property(mesh.nameFaceProperty, *target);
+		};
+		return {};
+	};
+
+	const auto controlledFaces {materializeRange(faces.equal_range(name))};
+	if (controlledFaces.empty()) {
+		throw std::runtime_error("Named face(s) do not exist: " + name);
+	}
+
+	if (!type.empty()) {
+		const auto mutation = getMatrix();
+		faces.erase(name);
+		for (const auto & cf : controlledFaces) {
+			// get points
+			const auto baseVertices {materializeRange(mesh.fv_range(cf.second))};
+			auto points = std::accumulate(baseVertices.begin(), baseVertices.end(), std::vector<glm::vec3> {},
+					[&mesh](auto && out, auto && v) {
+						out.push_back(mesh.point(v));
+						return std::move(out);
+					});
+			const auto vertexCount = points.size();
+			const auto centre
+					= std::accumulate(points.begin(), points.end(), glm::vec3 {}) / static_cast<float>(vertexCount);
+			if (type == "extrude") {
+				Shape::CreatedFaces newFaces;
+				// mutate points
+				std::for_each(points.begin(), points.end(), [&mutation, &centre](auto && p) {
+					p = centre + ((p - centre) % mutation);
+				});
+				// create new vertices
+				std::vector<OpenMesh::VertexHandle> vertices;
+				std::transform(points.begin(), points.end(), std::back_inserter(vertices), [&mesh](auto && p) {
+					return mesh.add_vertex({p.x, p.y, p.z});
+				});
+				// create new faces
+				const auto ofrange = materializeRange(mesh.ff_range(cf.second));
+				mesh.delete_face(cf.second);
+				for (size_t idx {}; idx < vertexCount; ++idx) {
+					const auto next = (idx + 1) % vertexCount;
+					const auto newFace
+							= mesh.add_face({baseVertices[idx], baseVertices[next], vertices[next], vertices[idx]});
+					auto & name = mesh.property(mesh.nameFaceProperty, newFace);
+					name = getAdjacentFaceName(ofrange, newFace);
+					newFaces.emplace(name, newFace);
+				}
+				newFaces.emplace(name, mesh.add_face(vertices));
+				if (smooth) {
+					for (const auto & [name, face] : newFaces) {
+						mesh.property(mesh.smoothFaceProperty, face) = true;
+					}
+				}
+				applyStyle(mesh, parents + this, newFaces);
+				for (const auto & [name, faceController] : faceControllers) {
+					faceController->apply(mesh, parents + this, name, newFaces);
+				}
+				faces.merge(std::move(newFaces));
+			}
+			else {
+				mesh.property(mesh.smoothFaceProperty, cf.second) = smooth;
+				applyStyle(mesh, parents + this, cf.second);
+			}
+		}
+	}
+	else {
+		for (const auto & cf : controlledFaces) {
+			applyStyle(mesh, parents + this, cf.second);
+		}
+	}
+}
+
+bool
+FaceController::persist(Persistence::PersistenceStore & store)
+{
+	return STORE_TYPE && STORE_MEMBER(id) && Style::persist(store) && STORE_MEMBER(type) && STORE_MEMBER(smooth)
+			&& STORE_MEMBER(scale) && STORE_MEMBER(position) && STORE_MEMBER(rotation)
+			&& STORE_NAME_HELPER("face", faceControllers, Persistence::MapByMember<FaceControllers>);
+}