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WIP: Optimization of the object's 2D convex silhouette for arrangement,

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not working yet.
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bubnikv 2019-01-28 10:10:23 +01:00
parent 282ef552f9
commit adb96bdc2e
4 changed files with 100 additions and 18 deletions
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53
src/libslic3r/ModelArrange.cpp
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@ -553,24 +553,47 @@ ShapeData2D projectModelFromTop(const Slic3r::Model &model) {
for(ModelObject* objptr : model.objects) {
if(objptr) {
TriangleMesh rmesh = objptr->raw_mesh();
ModelInstance * finst = objptr->instances.front();
// Object instances should carry the same scaling and
// x, y rotation that is why we use the first instance.
// The next line will apply only the full mirroring and scaling
rmesh.transform(finst->get_matrix(true, true, false, false));
rmesh.rotate_x(float(finst->get_rotation()(X)));
rmesh.rotate_y(float(finst->get_rotation()(Y)));
// TODO export the exact 2D projection. Cannot do it as libnest2d
// does not support concave shapes (yet).
auto p = rmesh.convex_hull();
ClipperLib::Path clpath;
//WIP Vojtech's optimization of the calculation of the convex hull is not working correctly yet.
#if 1
{
TriangleMesh rmesh = objptr->raw_mesh();
p.make_clockwise();
p.append(p.first_point());
auto clpath = Slic3rMultiPoint_to_ClipperPath(p);
ModelInstance * finst = objptr->instances.front();
// Object instances should carry the same scaling and
// x, y rotation that is why we use the first instance.
// The next line will apply only the full mirroring and scaling
rmesh.transform(finst->get_matrix(true, true, false, false));
rmesh.rotate_x(float(finst->get_rotation()(X)));
rmesh.rotate_y(float(finst->get_rotation()(Y)));
// TODO export the exact 2D projection. Cannot do it as libnest2d
// does not support concave shapes (yet).
auto p = rmesh.convex_hull();
p.make_clockwise();
p.append(p.first_point());
clpath = Slic3rMultiPoint_to_ClipperPath(p);
}
#else
// Object instances should carry the same scaling and
// x, y rotation that is why we use the first instance.
{
ModelInstance *finst = objptr->instances.front();
Vec3d rotation = finst->get_rotation();
rotation.z() = 0.;
Transform3d trafo_instance = Geometry::assemble_transform(Vec3d::Zero(), rotation, finst->get_scaling_factor(), finst->get_mirror());
Polygon p = objptr->convex_hull_2d(trafo_instance);
assert(! p.points.empty());
p.reverse();
assert(! p.is_counter_clockwise());
p.append(p.first_point());
clpath = Slic3rMultiPoint_to_ClipperPath(p);
}
#endif
for(ModelInstance* objinst : objptr->instances) {
if(objinst) {