diff options
Diffstat (limited to 'source/blender/alembic/intern/abc_points.cc')
| -rw-r--r-- | source/blender/alembic/intern/abc_points.cc | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/source/blender/alembic/intern/abc_points.cc b/source/blender/alembic/intern/abc_points.cc new file mode 100644 index 00000000000..fa5b71ac094 --- /dev/null +++ b/source/blender/alembic/intern/abc_points.cc @@ -0,0 +1,198 @@ +/* + * ***** BEGIN GPL LICENSE BLOCK ***** + * + * 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. + * + * ***** END GPL LICENSE BLOCK ***** + * + */ + +#include "abc_points.h" + +#include "abc_mesh.h" +#include "abc_transform.h" +#include "abc_util.h" + +extern "C" { +#include "DNA_mesh_types.h" + +#include "BKE_lattice.h" +#include "BKE_mesh.h" +#include "BKE_object.h" +#include "BKE_particle.h" +#include "BKE_scene.h" + +#include "BLI_math.h" +} + +using Alembic::AbcGeom::kVertexScope; +using Alembic::AbcGeom::kWrapExisting; +using Alembic::AbcGeom::P3fArraySamplePtr; +using Alembic::AbcGeom::N3fArraySamplePtr; + +using Alembic::AbcGeom::ICompoundProperty; +using Alembic::AbcGeom::IN3fArrayProperty; +using Alembic::AbcGeom::IPoints; +using Alembic::AbcGeom::IPointsSchema; +using Alembic::AbcGeom::ISampleSelector; + +using Alembic::AbcGeom::OPoints; +using Alembic::AbcGeom::OPointsSchema; + +/* ************************************************************************** */ + +AbcPointsWriter::AbcPointsWriter(Scene *scene, + Object *ob, + AbcTransformWriter *parent, + uint32_t time_sampling, + ExportSettings &settings, + ParticleSystem *psys) + : AbcObjectWriter(scene, ob, time_sampling, settings, parent) +{ + m_psys = psys; + + OPoints points(parent->alembicXform(), m_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.scene = m_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 = BKE_scene_frame_get(m_scene); + + 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); +} + +/* ************************************************************************** */ + +AbcPointsReader::AbcPointsReader(const Alembic::Abc::IObject &object, ImportSettings &settings) + : AbcObjectReader(object, settings) +{ + IPoints ipoints(m_iobject, kWrapExisting); + m_schema = ipoints.getSchema(); + get_min_max_time(m_schema, m_min_time, m_max_time); +} + +bool AbcPointsReader::valid() const +{ + return m_schema.valid(); +} + +void AbcPointsReader::readObjectData(Main *bmain, float time) +{ + Mesh *mesh = BKE_mesh_add(bmain, m_data_name.c_str()); + + const ISampleSelector sample_sel(time); + m_sample = m_schema.getValue(sample_sel); + + const P3fArraySamplePtr &positions = m_sample.getPositions(); + utils::mesh_add_verts(mesh, positions->size()); + + CDStreamConfig config = create_config(mesh); + read_points_sample(m_schema, sample_sel, config, time); + + if (m_settings->validate_meshes) { + BKE_mesh_validate(mesh, false, false); + } + + m_object = BKE_object_add_only_object(bmain, OB_MESH, m_object_name.c_str()); + m_object->data = mesh; + + if (has_animations(m_schema, m_settings)) { + addCacheModifier(); + } +} + +void read_points_sample(const IPointsSchema &schema, + const ISampleSelector &selector, + CDStreamConfig &config, + float time) +{ + Alembic::AbcGeom::IPointsSchema::Sample sample = schema.getValue(selector); + + const P3fArraySamplePtr &positions = sample.getPositions(); + + ICompoundProperty prop = schema.getArbGeomParams(); + N3fArraySamplePtr vnormals; + + if (has_property(prop, "N")) { + const IN3fArrayProperty &normals_prop = IN3fArrayProperty(prop, "N", time); + + if (normals_prop) { + vnormals = normals_prop.getValue(selector); + } + } + + read_mverts(config.mvert, positions, vnormals); +} |