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// K-3D
// Copyright (c) 1995-2007, 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)
\author Timothy M. Shead (tshead@k-3d.com)
*/
#include <k3d-i18n-config.h>
#include <k3dsdk/bilinear_patch.h>
#include <k3dsdk/document_plugin_factory.h>
#include <k3dsdk/imaterial.h>
#include <k3dsdk/mesh_modifier.h>
#include <k3dsdk/node.h>
#include <k3dsdk/polyhedron.h>
#include <k3dsdk/table_copier.h>
#include <boost/scoped_ptr.hpp>
namespace module
{
namespace bilinear_patch
{
/////////////////////////////////////////////////////////////////////////////
// poly_to_bilinear
class poly_to_bilinear:
public k3d::mesh_modifier<k3d::node >
{
typedef k3d::mesh_modifier<k3d::node > base;
public:
poly_to_bilinear(k3d::iplugin_factory& Factory, k3d::idocument& Document) :
base(Factory, Document)
{
}
void on_create_mesh(const k3d::mesh& Input, k3d::mesh& Output)
{
Output.points = Input.points;
Output.point_selection = Input.point_selection;
Output.point_attributes = Input.point_attributes;
// For each polyhedron ...
for(k3d::mesh::primitives_t::const_iterator primitive = Input.primitives.begin(); primitive != Input.primitives.end(); ++primitive)
{
boost::scoped_ptr<k3d::polyhedron::const_primitive> polyhedron(k3d::polyhedron::validate(Input, **primitive));
if(!polyhedron)
continue;
// Create bilinear patches ...
boost::scoped_ptr<k3d::bilinear_patch::primitive> bilinear_patches(k3d::bilinear_patch::create(Output));
// Get ready to copy attributes ...
bilinear_patches->constant_attributes = polyhedron->constant_attributes;
bilinear_patches->patch_attributes = polyhedron->face_attributes.clone_types();
bilinear_patches->vertex_attributes = polyhedron->vertex_attributes.clone_types();
k3d::table_copier patch_attributes(polyhedron->face_attributes, bilinear_patches->patch_attributes);
k3d::table_copier vertex_attributes(polyhedron->vertex_attributes, bilinear_patches->vertex_attributes);
// Create a patch for each quadrilateral face in the polyhedron ...
const k3d::uint_t face_begin = 0;
const k3d::uint_t face_end = face_begin + polyhedron->face_first_loops.size();
for(k3d::uint_t face = face_begin; face != face_end; ++face)
{
std::vector<k3d::uint_t> edges;
const k3d::uint_t first_edge = polyhedron->loop_first_edges[polyhedron->face_first_loops[face]];
for(k3d::uint_t edge = first_edge; ;)
{
edges.push_back(edge);
edge = polyhedron->clockwise_edges[edge];
if(edge == first_edge)
break;
}
if(edges.size() != 4)
continue;
bilinear_patches->patch_selections.push_back(polyhedron->face_selections[face]);
bilinear_patches->patch_materials.push_back(polyhedron->face_materials[face]);
patch_attributes.push_back(face);
// Note: Bilinear patch control points *aren't* in clockwise order!
bilinear_patches->patch_points.push_back(polyhedron->vertex_points[edges[0]]);
bilinear_patches->patch_points.push_back(polyhedron->vertex_points[edges[1]]);
bilinear_patches->patch_points.push_back(polyhedron->vertex_points[edges[3]]);
bilinear_patches->patch_points.push_back(polyhedron->vertex_points[edges[2]]);
vertex_attributes.push_back(edges[0]);
vertex_attributes.push_back(edges[1]);
vertex_attributes.push_back(edges[3]);
vertex_attributes.push_back(edges[2]);
}
}
}
void on_update_mesh(const k3d::mesh& Input, k3d::mesh& Output)
{
}
static k3d::iplugin_factory& get_factory()
{
static k3d::document_plugin_factory<poly_to_bilinear,
k3d::interface_list<k3d::imesh_source,
k3d::interface_list<k3d::imesh_sink> > > factory(
k3d::uuid(0xe99f3672, 0x6e85457d, 0x9ce1f9dc, 0x6bb71691),
"PolyToBilinear",
_("Converts input quadrilaterals to bilinear patches."),
"BilinearPatch",
k3d::iplugin_factory::STABLE);
return factory;
}
};
/////////////////////////////////////////////////////////////////////////////
// poly_to_bilinear_factory
k3d::iplugin_factory& poly_to_bilinear_factory()
{
return poly_to_bilinear::get_factory();
}
} // namespace bilinear_patch
} // namespace module
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