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; }