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/************************************************************************
*
* Copyright (C) 2009-2025 IRCAD France
* Copyright (C) 2012-2020 IHU Strasbourg
*
* This file is part of Sight.
*
* Sight is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Sight 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 Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Sight. If not, see <https://www.gnu.org/licenses/>.
*
***********************************************************************/
#include "app/parser/transfer_function.hpp"
#include <core/ptree.hpp>
#include <data/color.hpp>
#include <data/transfer_function.hpp>
namespace sight::app::parser
{
// ------------------------------------------------------------------------------
void transfer_function::parse(
const service::config_t& _cfg,
core::object::sptr _obj,
objects_t&
/*_sub_objects*/
)
{
data::transfer_function::sptr tf = std::dynamic_pointer_cast<data::transfer_function>(_obj);
SIGHT_ASSERT("transfer_function not instanced", tf);
if(const auto color_cfg = _cfg.get_child_optional("colors"); color_cfg.has_value())
{
const bool is_default = color_cfg->get("<xmlattr>.default", false);
if(is_default)
{
data::transfer_function::sptr default_tf = data::transfer_function::create_default_tf();
tf->deep_copy(default_tf);
}
else
{
const auto steps_config = color_cfg->equal_range("step");
auto tf_data = tf->pieces().emplace_back(std::make_shared<data::transfer_function_piece>());
const std::string name = _cfg.get<std::string>("name", "");
if(!name.empty())
{
tf->set_name(name);
}
for(auto it_step_cfg = steps_config.first ; it_step_cfg != steps_config.second ; ++it_step_cfg)
{
const auto value = it_step_cfg->second.get<double>("<xmlattr>.value");
const auto str_color = it_step_cfg->second.get<std::string>("<xmlattr>.color");
data::color::sptr new_color = std::make_shared<data::color>();
new_color->from_string(str_color);
const data::transfer_function::color_t color(new_color->red(), new_color->green(),
new_color->blue(), new_color->alpha());
(*tf_data)[value] = color;
}
tf_data->set_window_min_max(tf_data->min_max());
const auto is_clamped = core::ptree::get_and_deprecate(
*color_cfg,
"<xmlattr>.is_clamped",
"<xmlattr>.isClamped",
"26.0",
true
);
tf_data->set_clamped(is_clamped);
const bool resample_to_max_texture_size = color_cfg->get<bool>(
"<xmlattr>.resample_to_max_texture_size",
true
);
tf->set_resample_to_max_texture_size(resample_to_max_texture_size);
tf->fit_window();
}
}
else
{
data::transfer_function::sptr default_tf = data::transfer_function::create_default_tf();
tf->deep_copy(default_tf);
}
}
// ------------------------------------------------------------------------------
} // namespace sight::app::parser
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