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/*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2016 Kévin Dietrich.
* All rights reserved.
*/
/** \file
* \ingroup balembic
*/
#include "abc_writer_points.h"
#include "abc_util.h"
#include "abc_writer_mesh.h"
#include "abc_writer_transform.h"
#include "DNA_object_types.h"
#include "DNA_particle_types.h"
#include "BKE_lattice.h"
#include "BKE_particle.h"
#include "BLI_math.h"
#include "DEG_depsgraph_query.h"
using Alembic::AbcGeom::kVertexScope;
using Alembic::AbcGeom::OPoints;
using Alembic::AbcGeom::OPointsSchema;
/* ************************************************************************** */
AbcPointsWriter::AbcPointsWriter(Object *ob,
AbcTransformWriter *parent,
uint32_t time_sampling,
ExportSettings &settings,
ParticleSystem *psys)
: AbcObjectWriter(ob, time_sampling, settings, parent)
{
m_psys = psys;
OPoints points(parent->alembicXform(), psys->name, m_time_sampling);
m_schema = points.getSchema();
}
void AbcPointsWriter::do_write()
{
if (!m_psys) {
return;
}
std::vector<Imath::V3f> points;
std::vector<Imath::V3f> velocities;
std::vector<float> widths;
std::vector<uint64_t> ids;
ParticleKey state;
ParticleSimulationData sim;
sim.depsgraph = m_settings.depsgraph;
sim.scene = m_settings.scene;
sim.ob = m_object;
sim.psys = m_psys;
m_psys->lattice_deform_data = psys_create_lattice_deform_data(&sim);
uint64_t index = 0;
for (int p = 0; p < m_psys->totpart; p++) {
float pos[3], vel[3];
if (m_psys->particles[p].flag & (PARS_NO_DISP | PARS_UNEXIST)) {
continue;
}
state.time = DEG_get_ctime(m_settings.depsgraph);
if (psys_get_particle_state(&sim, p, &state, 0) == 0) {
continue;
}
/* location */
mul_v3_m4v3(pos, m_object->imat, state.co);
/* velocity */
sub_v3_v3v3(vel, state.co, m_psys->particles[p].prev_state.co);
/* Convert Z-up to Y-up. */
points.push_back(Imath::V3f(pos[0], pos[2], -pos[1]));
velocities.push_back(Imath::V3f(vel[0], vel[2], -vel[1]));
widths.push_back(m_psys->particles[p].size);
ids.push_back(index++);
}
if (m_psys->lattice_deform_data) {
end_latt_deform(m_psys->lattice_deform_data);
m_psys->lattice_deform_data = NULL;
}
Alembic::Abc::P3fArraySample psample(points);
Alembic::Abc::UInt64ArraySample idsample(ids);
Alembic::Abc::V3fArraySample vsample(velocities);
Alembic::Abc::FloatArraySample wsample_array(widths);
Alembic::AbcGeom::OFloatGeomParam::Sample wsample(wsample_array, kVertexScope);
m_sample = OPointsSchema::Sample(psample, idsample, vsample, wsample);
m_sample.setSelfBounds(bounds());
m_schema.set(m_sample);
}
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