/*!
Find the nearest Bface at the given screen location pix,
(within the search radius rad), then re-map it to the
corresponding edit-level face and barycentric
coordinates bc.
*/
inline Bface*
find_face(CPIXEL& pix, double rad, Wvec& bc)
{
Bface* f = VisRefImage::get_edit_face(bc, pix, rad);
// Only select faces belonging to a TEXBODY
if (!(f && f->mesh() && TEXBODY::isa(f->mesh()->geom())))
return 0;
return f;
}
/////////////////////////////////////
// store_visibility()
/////////////////////////////////////
bool
HatchingGroupFixed::store_visibility(HatchingLevelBase *hlb)
{
assert(!_complete);
HatchingLevelBase::size_type k;
NDCZpt_list::size_type j;
NDCZpt_list pts, hull;
//One side
for (k=0; k<hlb->size(); k++)
for (j=0; j<(*hlb)[k]->get_pts().size(); j++)
pts.push_back(NDCZpt( _patch->xform() * ((*hlb)[k]->get_pts()[j]) ));
compute_convex_hull(pts,hull);
if (hull.size() == 0) {
err_mesg(ERR_LEV_WARN,
"HatchingGroupFixed:store_visibility() - Error!! There were %d convex hull verts found from %d hatch verts.",
hull.size(), pts.size());
return false;
} else {
err_mesg(ERR_LEV_INFO,
"HatchingGroupFixed:store_visibility() - There were %d convex hull verts found from %d hatch verts.",
hull.size(), pts.size());
}
Bface *f = nullptr;
XYpt center = NDCpt(hull.average());
BMESHray r(center);
VIEW::peek()->intersect(r);
f = r.face();
if (!f)
{
err_mesg(ERR_LEV_WARN, "HatchingGroupFixed:store_visibility() - Seed face intersect failed (hull center)!");
}
if (!(_patch == f->patch()))
{
err_mesg(ERR_LEV_WARN, "HatchingGroupFixed:store_visibility() - Seed face intersected wrong patch (hull center)!!");
return false;
}
CBface_list & faces = f->mesh()->faces();
for (k=0; k < faces.size(); k++) faces[k]->clear_bit(1);
int ctr = 0;
ctr = recurse_visibility(f,hull);
err_mesg(ERR_LEV_INFO, "HatchingGroupFixed:store_visibility() - There were %d faces in the visible region (from %d).", ctr, faces.size());
_group->patch()->changed();
if (ctr>0) return true;
else return false;
}
int
XformPen::tap_cb(CGESTUREptr& tap, DrawState*& s)
{
assert(tap);
if (tap->is_double_tap()) {
// should never happen given order of arcs in XformPen constructor
cerr << "XformPen::tap_cb: error: gesture is double tap"
<< endl;
return 0;
}
// tap on cursor?
BMESHray ray(tap->center());
_view->intersect(ray);
Cursor3D* c = Cursor3D::upcast(ray.geom());
if (c) {
err_adv(debug, "XformPen::tap_cb: hit axis");
c->handle_gesture(tap);
return 0;
}
// tap on mesh?
_mesh = 0;
Bface* f = cur_face();
if (!f) {
err_adv(debug, "XformPen::tap_cb: missed face");
return cancel_cb(tap, s);
}
BMESH* m = f->mesh();
if (!m) {
err_adv(debug, "XformPen::tap_cb: hit face, no mesh");
return cancel_cb(tap, s);
}
GEOMptr g = bmesh_to_geom(m);
if (!g) {
err_adv(debug, "XformPen::tap_cb: hit mesh, no geom");
return cancel_cb(tap, s);
}
// skip floor:
if (FLOOR::isa(g)) {
err_adv(debug, "XformPen::tap_cb: hit floor, skipping...");
return cancel_cb(tap, s);
}
// tap on ordinary mesh (not floor):
_mesh = m;
assert(_mesh);
BMESH::set_focus(_mesh, f->patch());
FLOOR::show();
FLOOR::realign(_mesh,0); // 0 = no undo command
Cursor3D::attach(g);
return 0;
}
