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Cut: Preserve Z-rotation, fix upper part mesh position,

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perform custom placing instead of arrange()
This commit is contained in:
Vojtech Kral 2018-11-26 17:08:36 +01:00
parent 693bee7b79
commit 3b20d03e1d
2 changed files with 62 additions and 32 deletions
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92
src/libslic3r/Model.cpp
View file

@ -975,12 +975,6 @@ bool ModelObject::needed_repair() const
return false;
}
template<class T> static void cut_reset_transform(T *thing) {
const Vec3d offset = thing->get_offset();
thing->set_transformation(Geometry::Transformation());
thing->set_offset(offset);
}
ModelObjectPtrs ModelObject::cut(size_t instance, coordf_t z, bool keep_upper, bool keep_lower, bool rotate_lower)
{
// Clone the object to duplicate instances, materials etc.
@ -1001,24 +995,25 @@ ModelObjectPtrs ModelObject::cut(size_t instance, coordf_t z, bool keep_upper, b
lower->input_file = "";
}
const auto instance_matrix = instances[instance]->get_matrix(true);
// Because transformations are going to be applied to meshes directly,
// we reset transformation of all instances and volumes,
// except for translation, which is preserved in the transformation matrix
// and not applied to the mesh transform.
// TODO: Do the same for Z-rotation as well?
// except for translation and Z-rotation on instances, which are preserved
// in the transformation matrix and not applied to the mesh transform.
if (keep_upper) {
for (auto *instance : upper->instances) { cut_reset_transform(instance); }
}
if (keep_lower) {
for (auto *instance : lower->instances) { cut_reset_transform(instance); }
}
// const auto instance_matrix = instances[instance]->get_matrix(true);
const auto instance_matrix = Geometry::assemble_transform(
Vec3d::Zero(), // don't apply offset
instances[instance]->get_rotation().cwiseProduct(Vec3d(1.0, 1.0, 0.0)), // don't apply Z-rotation
instances[instance]->get_scaling_factor(),
instances[instance]->get_mirror()
);
// Lower part per-instance bounding boxes
std::vector<BoundingBoxf3> lower_bboxes { instances.size() };
for (ModelVolume *volume : volumes) {
if (! volume->is_model_part()) {
// don't cut modifiers
// Don't cut modifiers
if (keep_upper) { upper->add_volume(*volume); }
if (keep_lower) { lower->add_volume(*volume); }
} else {
@ -1027,13 +1022,23 @@ ModelObjectPtrs ModelObject::cut(size_t instance, coordf_t z, bool keep_upper, b
// Transform the mesh by the object transformation matrix
const auto volume_tr = instance_matrix * volume->get_matrix(true);
volume->mesh.transform(volume_tr);
cut_reset_transform(volume);
// Transform z from world to object
const auto local_z = volume_tr * Vec3d(0.0, 0.0, z);
const double local_z = (volume_tr * Vec3d(0.0, 0.0, z))(2);
// Perform cut
TriangleMeshSlicer tms(&volume->mesh);
tms.cut(local_z(2), &upper_mesh, &lower_mesh);
tms.cut(local_z, &upper_mesh, &lower_mesh);
// Move the upper mesh to down to zero in Z
if (keep_upper) {
upper_mesh.translate(0.0, 0.0, -local_z);
}
// Reset volume transformation except for offset
const Vec3d offset = volume->get_offset();
volume->set_transformation(Geometry::Transformation());
volume->set_offset(offset);
if (keep_upper) {
upper_mesh.repair();
@ -1055,16 +1060,15 @@ ModelObjectPtrs ModelObject::cut(size_t instance, coordf_t z, bool keep_upper, b
vol->name = volume->name;
vol->config = volume->config;
vol->set_material(volume->material_id(), *volume->material());
}
}
}
if (keep_lower && rotate_lower) {
for (auto *instance : lower->instances) {
Geometry::Transformation tr;
tr.set_offset(instance->get_offset());
tr.set_rotation({Geometry::deg2rad(180.0), 0.0, 0.0});
instance->set_transformation(tr);
// Compute the lower part instances' bounding boxes to figure out where to place
// the upper part
if (keep_upper) {
for (size_t i = 0; i < instances.size(); i++) {
lower_bboxes[i].merge(instances[i]->transform_mesh_bounding_box(lower_mesh, true));
}
}
}
}
}
@ -1073,11 +1077,39 @@ ModelObjectPtrs ModelObject::cut(size_t instance, coordf_t z, bool keep_upper, b
if (keep_upper && upper->volumes.size() > 0) {
upper->invalidate_bounding_box();
upper->center_around_origin();
// Reset instance transformation except offset and Z-rotation
for (size_t i = 0; i < instances.size(); i++) {
auto &instance = upper->instances[i];
const Vec3d offset = instance->get_offset();
const double rot_z = instance->get_rotation()(2);
const Vec3d displace = lower_bboxes[i].size().cwiseProduct(Vec3d(-0.5, -0.5, 0.0));
instance->set_transformation(Geometry::Transformation());
instance->set_offset(offset + displace);
instance->set_rotation(Vec3d(0.0, 0.0, rot_z));
}
res.push_back(upper);
}
if (keep_lower && lower->volumes.size() > 0) {
lower->invalidate_bounding_box();
lower->center_around_origin();
// Reset instance transformation except offset and Z-rotation
for (auto *instance : lower->instances) {
const Vec3d offset = instance->get_offset();
const double rot_z = instance->get_rotation()(2);
instance->set_transformation(Geometry::Transformation());
if (rotate_lower) {
instance->set_rotation({Geometry::deg2rad(180.0), 0.0, 0.0});
}
instance->set_offset(offset);
instance->set_rotation(Vec3d(0.0, 0.0, rot_z));
}
res.push_back(lower);
}

2
src/slic3r/GUI/Plater.cpp
View file

@ -2483,8 +2483,6 @@ void Plater::cut(size_t obj_idx, size_t instance_idx, coordf_t z, bool keep_uppe
remove(obj_idx);
p->load_model_objects(new_objects);
p->arrange();
}
void Plater::export_gcode(fs::path output_path)