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// K-3D
// Copyright (c) 1995-2008, 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 Timothy M. Shead (tshead@k-3d.com)
\author Romain Behar (romainbehar@yahoo.com)
\author Bart Janssens (bart.janssens@lid.kviv.be)
*/
#include "detail.h"
#include <k3dsdk/table_copier.h>
#include <k3dsdk/imaterial.h>
#include <k3dsdk/mesh.h>
#include <boost/scoped_ptr.hpp>
namespace module
{
namespace blobby
{
namespace detail
{
void merge(const mesh_collection& Inputs, k3d::imaterial* const Material, const k3d::blobby::operator_type Operator, const k3d::bool_t VariableArguments, k3d::mesh& Output)
{
// Collect all of the parameter and vertex arrays to be merged ...
k3d::mesh::table_t::table_collection source_parameter_attributes;
k3d::mesh::table_t::table_collection source_vertex_attributes;
for(mesh_collection::const_iterator mesh = Inputs.begin(); mesh != Inputs.end(); ++mesh)
{
for(k3d::mesh::primitives_t::const_iterator primitive = (*mesh)->primitives.begin(); primitive != (*mesh)->primitives.end(); ++primitive)
{
boost::scoped_ptr<k3d::blobby::const_primitive> source_blobby(k3d::blobby::validate(**mesh, **primitive));
if(!source_blobby)
continue;
source_parameter_attributes.push_back(&source_blobby->parameter_attributes);
source_vertex_attributes.push_back(&source_blobby->vertex_attributes);
}
}
// Setup the initial state of the output mesh ...
boost::scoped_ptr<k3d::blobby::primitive> target_blobby(k3d::blobby::create(Output));
target_blobby->parameter_attributes = k3d::table::clone_types(source_parameter_attributes);
target_blobby->vertex_attributes = k3d::table::clone_types(source_vertex_attributes);
target_blobby->first_primitives.push_back(0);
target_blobby->primitive_counts.push_back(0);
target_blobby->first_operators.push_back(0);
target_blobby->operator_counts.push_back(0);
target_blobby->materials.push_back(Material);
k3d::mesh::indices_t blobby_roots;
// Iterate over each input mesh ...
for(mesh_collection::const_iterator mesh = Inputs.begin(); mesh != Inputs.end(); ++mesh)
{
for(k3d::mesh::primitives_t::const_iterator primitive = (*mesh)->primitives.begin(); primitive != (*mesh)->primitives.end(); ++primitive)
{
boost::scoped_ptr<k3d::blobby::const_primitive> source_blobby(k3d::blobby::validate(**mesh, **primitive));
if(!source_blobby)
continue;
k3d::table_copier parameter_copier(source_blobby->parameter_attributes, target_blobby->parameter_attributes, k3d::table_copier::copy_subset());
k3d::table_copier vertex_copier(source_blobby->vertex_attributes, target_blobby->vertex_attributes, k3d::table_copier::copy_subset());
const k3d::uint_t blobby_begin = 0;
const k3d::uint_t blobby_end = blobby_begin + source_blobby->first_primitives.size();
for(k3d::uint_t blobby = blobby_begin; blobby != blobby_end; ++blobby)
{
const k3d::uint_t operand_offset = target_blobby->primitive_counts[0] + target_blobby->operator_counts[0];
const k3d::uint_t source_primitive_count = source_blobby->primitive_counts[blobby];
const k3d::uint_t source_primitives_begin = source_blobby->first_primitives[blobby];
const k3d::uint_t source_primitives_end = source_primitives_begin + source_primitive_count;
for(k3d::uint_t source_primitive = source_primitives_begin; source_primitive != source_primitives_end; ++source_primitive)
{
target_blobby->primitives.push_back(source_blobby->primitives[source_primitive]);
target_blobby->primitive_first_floats.push_back(target_blobby->floats.size());
target_blobby->primitive_float_counts.push_back(source_blobby->primitive_float_counts[source_primitive]);
parameter_copier.push_back(source_primitive);
vertex_copier.push_back(source_primitive);
const k3d::uint_t source_floats_begin = source_blobby->primitive_first_floats[source_primitive];
const k3d::uint_t source_floats_end = source_floats_begin + source_blobby->primitive_float_counts[source_primitive];
for(k3d::uint_t source_float = source_floats_begin; source_float != source_floats_end; ++source_float)
target_blobby->floats.push_back(source_blobby->floats[source_float]);
}
target_blobby->primitive_counts[0] += source_primitive_count;
const k3d::uint_t source_operator_count = source_blobby->operator_counts[blobby];
const k3d::uint_t source_operators_begin = source_blobby->first_operators[blobby];
const k3d::uint_t source_operators_end = source_operators_begin + source_operator_count;
for(k3d::uint_t source_operator = source_operators_begin; source_operator != source_operators_end; ++source_operator)
{
target_blobby->operators.push_back(source_blobby->operators[source_operator]);
target_blobby->operator_first_operands.push_back(target_blobby->operands.size());
target_blobby->operator_operand_counts.push_back(source_blobby->operator_operand_counts[source_operator]);
const k3d::uint_t source_operands_begin = source_blobby->operator_first_operands[source_operator];
const k3d::uint_t source_operands_end = source_operands_begin + source_blobby->operator_operand_counts[source_operator];
for(k3d::uint_t source_operand = source_operands_begin; source_operand != source_operands_end; ++source_operand)
target_blobby->operands.push_back(source_blobby->operands[source_operand] + operand_offset);
}
target_blobby->operator_counts[0] += source_operator_count;
if(source_primitive_count || source_operator_count)
blobby_roots.push_back(target_blobby->primitive_counts[0] + target_blobby->operator_counts[0] - 1);
}
}
}
if(!blobby_roots.empty())
{
target_blobby->operator_counts[0] += 1;
target_blobby->operators.push_back(Operator);
target_blobby->operator_first_operands.push_back(target_blobby->operands.size());
if(VariableArguments)
{
target_blobby->operator_operand_counts.push_back(blobby_roots.size() + 1);
target_blobby->operands.push_back(blobby_roots.size());
}
else
{
target_blobby->operator_operand_counts.push_back(blobby_roots.size());
}
target_blobby->operands.insert(target_blobby->operands.end(), blobby_roots.begin(), blobby_roots.end());
}
}
} // namespace detail
} // namespace blobby
} // namespace module
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