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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.
*/
/** \file
* \ingroup balembic
*/
#include "abc_writer_transform.h"
#include "abc_axis_conversion.h"
#include <OpenEXR/ImathBoxAlgo.h>
#include "DNA_object_types.h"
#include "BLI_math.h"
#include "DEG_depsgraph_query.h"
using Alembic::AbcGeom::OObject;
using Alembic::AbcGeom::OXform;
AbcTransformWriter::AbcTransformWriter(Object *ob,
const OObject &abc_parent,
AbcTransformWriter *parent,
unsigned int time_sampling,
ExportSettings &settings)
: AbcObjectWriter(ob, time_sampling, settings, parent), m_proxy_from(NULL)
{
m_is_animated = hasAnimation(m_object);
if (!m_is_animated) {
time_sampling = 0;
}
m_xform = OXform(abc_parent, get_id_name(m_object), time_sampling);
m_schema = m_xform.getSchema();
/* Blender objects can't have a parent without inheriting the transform. */
m_inherits_xform = parent != NULL;
}
void AbcTransformWriter::do_write()
{
Object *ob_eval = DEG_get_evaluated_object(m_settings.depsgraph, m_object);
if (m_first_frame) {
m_visibility = Alembic::AbcGeom::CreateVisibilityProperty(
m_xform, m_xform.getSchema().getTimeSampling());
}
m_visibility.set(!(ob_eval->restrictflag & OB_RESTRICT_VIEWPORT));
if (!m_first_frame && !m_is_animated) {
return;
}
float yup_mat[4][4];
create_transform_matrix(
ob_eval, yup_mat, m_inherits_xform ? ABC_MATRIX_LOCAL : ABC_MATRIX_WORLD, m_proxy_from);
/* If the parent is a camera, undo its to-Maya rotation (see below). */
bool is_root_object = !m_inherits_xform || ob_eval->parent == nullptr;
if (!is_root_object && ob_eval->parent->type == OB_CAMERA) {
float rot_mat[4][4];
axis_angle_to_mat4_single(rot_mat, 'X', M_PI_2);
mul_m4_m4m4(yup_mat, rot_mat, yup_mat);
}
/* If the object is a camera, apply an extra rotation to Maya camera orientation. */
if (ob_eval->type == OB_CAMERA) {
float rot_mat[4][4];
axis_angle_to_mat4_single(rot_mat, 'X', -M_PI_2);
mul_m4_m4m4(yup_mat, yup_mat, rot_mat);
}
if (is_root_object) {
/* Only apply scaling to root objects, parenting will propagate it. */
float scale_mat[4][4];
scale_m4_fl(scale_mat, m_settings.global_scale);
scale_mat[3][3] = m_settings.global_scale; /* also scale translation */
mul_m4_m4m4(yup_mat, yup_mat, scale_mat);
yup_mat[3][3] /= m_settings.global_scale; /* normalise the homogeneous component */
}
m_matrix = convert_matrix_datatype(yup_mat);
m_sample.setMatrix(m_matrix);
m_sample.setInheritsXforms(m_inherits_xform);
m_schema.set(m_sample);
}
Imath::Box3d AbcTransformWriter::bounds()
{
Imath::Box3d bounds;
for (int i = 0; i < m_children.size(); i++) {
Imath::Box3d box(m_children[i]->bounds());
bounds.extendBy(box);
}
return Imath::transform(bounds, m_matrix);
}
bool AbcTransformWriter::hasAnimation(Object * /*ob*/) const
{
return true;
}
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