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// K-3D
// Copyright (c) 2005-2008 Timothy M. Shead
//
// Contact: tshead@k-3d.com
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2 of the License, or (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public
// License along with this program; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
/** \file
\author Bart Janssens (bart.janssens@lid.kviv.be)
*/
#include <k3d-i18n-config.h>
#include <k3dsdk/basic_math.h>
#include <k3dsdk/document_plugin_factory.h>
#include <k3dsdk/geometry.h>
#include <k3dsdk/imaterial.h>
#include <k3dsdk/mesh_selection_modifier.h>
#include <k3dsdk/mesh_selection_sink.h>
#include <k3dsdk/node.h>
#include <k3dsdk/polyhedron.h>
#include <k3dsdk/selection.h>
#include <k3dsdk/utility.h>
#include <k3dsdk/vectors.h>
#include <boost/scoped_ptr.hpp>
namespace module
{
namespace selection
{
namespace detail
{
void select_connected_faces(k3d::mesh::bools_t& TaggedEdges, k3d::mesh::selection_t& FaceSelections, k3d::mesh::indices_t& EdgeFaces, const k3d::mesh::indices_t& ClockwiseEdges, const k3d::mesh::indices_t& AdjacentEdges, const k3d::uint_t Edge)
{
if(TaggedEdges[Edge])
return;
TaggedEdges[Edge] = true;
FaceSelections[EdgeFaces[Edge]] = 1.0;
select_connected_faces(TaggedEdges, FaceSelections, EdgeFaces, ClockwiseEdges, AdjacentEdges, AdjacentEdges[Edge]);
select_connected_faces(TaggedEdges, FaceSelections, EdgeFaces, ClockwiseEdges, AdjacentEdges, ClockwiseEdges[Edge]);
}
void select_connected_edges(k3d::mesh::bools_t& TaggedEdges, k3d::mesh::selection_t& EdgeSelections, const k3d::mesh::indices_t& ClockwiseEdges, const k3d::mesh::indices_t& AdjacentEdges, const k3d::uint_t Edge)
{
if(TaggedEdges[Edge])
return;
TaggedEdges[Edge] = true;
EdgeSelections[Edge] = 1.0;
select_connected_edges(TaggedEdges, EdgeSelections, ClockwiseEdges, AdjacentEdges, AdjacentEdges[Edge]);
select_connected_edges(TaggedEdges, EdgeSelections, ClockwiseEdges, AdjacentEdges, ClockwiseEdges[Edge]);
}
void select_connected_points(k3d::mesh::bools_t& TaggedEdges, k3d::mesh::selection_t& PointSelections, k3d::mesh::indices_t& EdgePoints, const k3d::mesh::indices_t& ClockwiseEdges, const k3d::mesh::indices_t& AdjacentEdges, const k3d::uint_t Edge)
{
if(TaggedEdges[Edge])
return;
TaggedEdges[Edge] = true;
PointSelections[EdgePoints[Edge]] = 1.0;
select_connected_faces(TaggedEdges, PointSelections, EdgePoints, ClockwiseEdges, AdjacentEdges, AdjacentEdges[Edge]);
select_connected_faces(TaggedEdges, PointSelections, EdgePoints, ClockwiseEdges, AdjacentEdges, ClockwiseEdges[Edge]);
}
void select_connected_components(k3d::polyhedron::primitive& Polyhedron, k3d::mesh::selection_t& PointSelection)
{
k3d::mesh::bools_t boundary_edges;
k3d::mesh::indices_t adjacent_edges;
k3d::polyhedron::create_edge_adjacency_lookup(Polyhedron.vertex_points, Polyhedron.clockwise_edges, boundary_edges, adjacent_edges);
const k3d::uint_t face_count = Polyhedron.face_first_loops.size();
const k3d::uint_t edge_count = Polyhedron.clockwise_edges.size();
// Find out what edges are directly connected to a selected component
k3d::mesh::indices_t face_selected_edges;
k3d::mesh::indices_t edge_selected_edges;
k3d::mesh::indices_t point_selected_edges;
k3d::mesh::indices_t edge_faces(edge_count);
for(k3d::uint_t face = 0; face != face_count; ++face)
{
const k3d::uint_t loop_begin = Polyhedron.face_first_loops[face];
const k3d::uint_t loop_end = loop_begin + Polyhedron.face_loop_counts[face];
for(k3d::uint_t loop = loop_begin; loop != loop_end; ++loop)
{
const k3d::uint_t first_edge = Polyhedron.loop_first_edges[loop];
for(k3d::uint_t edge = first_edge; ;)
{
if(Polyhedron.face_selections[face])
face_selected_edges.push_back(edge);
if(PointSelection[Polyhedron.vertex_points[edge]])
point_selected_edges.push_back(edge);
if(Polyhedron.edge_selections[edge])
edge_selected_edges.push_back(edge);
edge_faces[edge] = face; // There is an SDK function for this, but we're here now, so...
edge = Polyhedron.clockwise_edges[edge];
if(edge == first_edge)
break;
}
}
}
// For all of these edges, select all of the components of the same type that are connected
k3d::mesh::bools_t tagged_edges(edge_count, false);
for(k3d::uint_t i = 0; i != face_selected_edges.size(); ++i)
select_connected_faces(tagged_edges, Polyhedron.face_selections, edge_faces, Polyhedron.clockwise_edges, adjacent_edges, face_selected_edges[i]);
tagged_edges.assign(edge_count, false);
for(k3d::uint_t i = 0; i != edge_selected_edges.size(); ++i)
select_connected_edges(tagged_edges, Polyhedron.edge_selections, Polyhedron.clockwise_edges, adjacent_edges, edge_selected_edges[i]);
tagged_edges.assign(edge_count, false);
for(k3d::uint_t i = 0; i != point_selected_edges.size(); ++i)
select_connected_points(tagged_edges, PointSelection, Polyhedron.vertex_points, Polyhedron.clockwise_edges, adjacent_edges, point_selected_edges[i]);
}
} // namespace detail
/////////////////////////////////////////////////////////////////////////////
// select_connected_components
class select_connected_components :
public k3d::mesh_selection_modifier<k3d::mesh_selection_sink<k3d::node > >
{
typedef k3d::mesh_selection_modifier<k3d::mesh_selection_sink<k3d::node > > base;
public:
select_connected_components(k3d::iplugin_factory& Factory, k3d::idocument& Document) :
base(Factory, Document)
{
m_mesh_selection.changed_signal().connect(k3d::hint::converter<
k3d::hint::convert<k3d::hint::any, k3d::hint::none> >(make_update_mesh_slot()));
}
void on_update_selection(const k3d::mesh& Input, k3d::mesh& Output)
{
// Shallow copy of the input (no data is copied, only shared pointers are)
Output = Input;
k3d::geometry::selection::merge(m_mesh_selection.pipeline_value(), Output); // Merges the current document selection with the mesh
for(k3d::uint_t i = 0; i != Input.primitives.size(); ++i)
{
boost::scoped_ptr<k3d::polyhedron::primitive> output_polyhedron(k3d::polyhedron::validate(Output, Output.primitives[i]));
if(!output_polyhedron)
continue;
detail::select_connected_components(*output_polyhedron, Output.point_selection.writable());
}
}
static k3d::iplugin_factory& get_factory()
{
static k3d::document_plugin_factory<select_connected_components,
k3d::interface_list<k3d::imesh_source,
k3d::interface_list<k3d::imesh_sink > > > factory(
k3d::uuid(0xe54a08e3, 0x014445d3, 0x5395c8a6, 0xb3bfaae3),
"SelectConnectedComponents",
_("Select all components that are directly or indirectly connected to the selected component"),
"Selection",
k3d::iplugin_factory::STABLE);
return factory;
}
};
/////////////////////////////////////////////////////////////////////////////
// select_connected_components_factory
k3d::iplugin_factory& select_connected_components_factory()
{
return select_connected_components::get_factory();
}
} // namespace selection
} // namespace module
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