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// K-3D
// Copyright (c) 1995-2004, 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 Romain Behar (romainbehar@yahoo.com)
*/
#include <k3dsdk/object.h>
#include <k3dsdk/persistence.h>
#include <k3dsdk/measurement.h>
#include <k3dsdk/mesh_filter.h>
#include <k3dsdk/module.h>
#include <k3dsdk/plugins.h>
#include <k3dsdk/selection.h>
#include <k3dsdk/transform.h>
#include <iterator>
namespace libk3dmesh
{
/////////////////////////////////////////////////////////////////////////////
// make_bilinear_patches_implementation
class make_bilinear_patches_implementation :
public k3d::mesh_filter<k3d::persistent<k3d::object> >
{
typedef k3d::mesh_filter<k3d::persistent<k3d::object> > base;
public:
make_bilinear_patches_implementation(k3d::idocument& Document) :
base(Document)
{
m_input_mesh.changed_signal().connect(SigC::slot(*this, &make_bilinear_patches_implementation::on_reset_geometry));
m_output_mesh.need_data_signal().connect(SigC::slot(*this, &make_bilinear_patches_implementation::on_create_geometry));
}
void on_reset_geometry()
{
m_output_mesh.reset();
}
k3d::mesh* on_create_geometry()
{
// If we don't have any input mesh, we're done ...
const k3d::mesh* const input = m_input_mesh.property_value();
return_val_if_fail(input, 0);
// Otherwise, we convert input mesh polyhedra to blobbies ...
k3d::mesh* const output = new k3d::mesh();
update_geometry(*input, *output);
return output;
}
void update_geometry(const k3d::mesh& Input, k3d::mesh& Output)
{
std::map<k3d::point*, k3d::point*> point_map;
point_map[0] = 0;
for(k3d::mesh::points_t::const_iterator point = Input.points.begin(); point != Input.points.end(); ++point)
{
k3d::point* const new_point = new k3d::point(**point);
Output.points.push_back(new_point);
point_map[*point] = new_point;
}
// Collect faces ...
for(k3d::mesh::polyhedra_t::const_iterator polyhedron = Input.polyhedra.begin(); polyhedron != Input.polyhedra.end(); ++polyhedron)
{
for(k3d::polyhedron::faces_t::const_iterator face = (*polyhedron)->faces.begin(); face != (*polyhedron)->faces.end(); ++face)
{
std::vector<k3d::split_edge*> edges;
for(k3d::split_edge* edge = (*face)->first_edge; edge; edge = edge->face_clockwise)
{
edges.push_back(edge);
if(edge->face_clockwise == (*face)->first_edge)
break;
}
if(edges.size() != 4)
continue;
k3d::bilinear_patch* const new_patch = new k3d::bilinear_patch();
Output.bilinear_patches.push_back(new_patch);
new_patch->material = (*polyhedron)->material;
new_patch->control_points[0] = point_map[edges[0]->vertex];
new_patch->control_points[1] = point_map[edges[1]->vertex];
new_patch->control_points[2] = point_map[edges[3]->vertex];// bicubic patch control points *aren't* in clockwise order!
new_patch->control_points[3] = point_map[edges[2]->vertex];
}
}
}
k3d::iplugin_factory& factory()
{
return get_factory();
}
static k3d::iplugin_factory& get_factory()
{
static k3d::plugin_factory<
k3d::document_plugin<make_bilinear_patches_implementation>,
k3d::interface_list<k3d::imesh_source,
k3d::interface_list<k3d::imesh_sink> > > factory(
k3d::uuid(0xe99f3672, 0x6e85457d, 0x9ce1f9dc, 0x6bb71691),
"MakeBilinearPatches",
"Converts input quadrilaterals to bilinear patches",
"Objects",
k3d::iplugin_factory::EXPERIMENTAL);
return factory;
}
};
/////////////////////////////////////////////////////////////////////////////
// make_bilinear_patches_factory
k3d::iplugin_factory& make_bilinear_patches_factory()
{
return make_bilinear_patches_implementation::get_factory();
}
} // namespace libk3dmesh
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