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#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 controlledFacesRange = faces.equal_range(name);
const std::vector controlledFaces(controlledFacesRange.first, controlledFacesRange.second);
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 face vertices
const auto faceVertexRange = mesh.fv_range(cf.second);
// get points
const std::vector baseVertices(faceVertexRange.begin(), faceVertexRange.end());
std::vector<glm::vec3> points;
std::transform(
faceVertexRange.begin(), faceVertexRange.end(), std::back_inserter(points), [&mesh](auto && v) {
return mesh.point(v);
});
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, ¢re](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
mesh.delete_face(cf.second);
for (size_t idx {}; idx < vertexCount; ++idx) {
const auto next = (idx + 1) % vertexCount;
newFaces.emplace("extrusion",
mesh.add_face({baseVertices[idx], baseVertices[next], vertices[next], vertices[idx]}));
}
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>);
}
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