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/*
* ***** 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.
*
* Contributor(s): Esteban Tovagliari, Cedric Paille, Kevin Dietrich
*
* ***** END GPL LICENSE BLOCK *****
*/
#include "abc_camera.h"
#include "abc_transform.h"
#include "abc_util.h"
extern "C" {
#include "DNA_camera_types.h"
#include "DNA_object_types.h"
#include "BKE_camera.h"
#include "BKE_object.h"
#include "BLI_math.h"
#include "BLI_string.h"
}
using Alembic::AbcGeom::ICamera;
using Alembic::AbcGeom::ICompoundProperty;
using Alembic::AbcGeom::IFloatProperty;
using Alembic::AbcGeom::ISampleSelector;
using Alembic::AbcGeom::OCamera;
using Alembic::AbcGeom::OFloatProperty;
using Alembic::AbcGeom::CameraSample;
using Alembic::AbcGeom::kWrapExisting;
/* ************************************************************************** */
AbcCameraWriter::AbcCameraWriter(Scene *scene,
Object *ob,
AbcTransformWriter *parent,
uint32_t time_sampling,
ExportSettings &settings)
: AbcObjectWriter(scene, ob, time_sampling, settings, parent)
{
OCamera camera(parent->alembicXform(), m_name, m_time_sampling);
m_camera_schema = camera.getSchema();
m_custom_data_container = m_camera_schema.getUserProperties();
m_stereo_distance = OFloatProperty(m_custom_data_container, "stereoDistance", m_time_sampling);
m_eye_separation = OFloatProperty(m_custom_data_container, "eyeSeparation", m_time_sampling);
}
void AbcCameraWriter::do_write()
{
Camera *cam = static_cast<Camera *>(m_object->data);
m_stereo_distance.set(cam->stereo.convergence_distance);
m_eye_separation.set(cam->stereo.interocular_distance);
const double apperture_x = cam->sensor_x / 10.0;
const double apperture_y = cam->sensor_y / 10.0;
const double film_aspect = apperture_x / apperture_y;
m_camera_sample.setFocalLength(cam->lens);
m_camera_sample.setHorizontalAperture(apperture_x);
m_camera_sample.setVerticalAperture(apperture_y);
m_camera_sample.setHorizontalFilmOffset(apperture_x * cam->shiftx);
m_camera_sample.setVerticalFilmOffset(apperture_y * cam->shifty * film_aspect);
m_camera_sample.setNearClippingPlane(cam->clipsta);
m_camera_sample.setFarClippingPlane(cam->clipend);
if (cam->dof_ob) {
Imath::V3f v(m_object->loc[0] - cam->dof_ob->loc[0],
m_object->loc[1] - cam->dof_ob->loc[1],
m_object->loc[2] - cam->dof_ob->loc[2]);
m_camera_sample.setFocusDistance(v.length());
}
else {
m_camera_sample.setFocusDistance(cam->gpu_dof.focus_distance);
}
/* Blender camera does not have an fstop param, so try to find a custom prop
* instead. */
m_camera_sample.setFStop(cam->gpu_dof.fstop);
m_camera_sample.setLensSqueezeRatio(1.0);
m_camera_schema.set(m_camera_sample);
}
/* ************************************************************************** */
AbcCameraReader::AbcCameraReader(const Alembic::Abc::IObject &object, ImportSettings &settings)
: AbcObjectReader(object, settings)
{
ICamera abc_cam(m_iobject, kWrapExisting);
m_schema = abc_cam.getSchema();
get_min_max_time(m_iobject, m_schema, m_min_time, m_max_time);
}
bool AbcCameraReader::valid() const
{
return m_schema.valid();
}
void AbcCameraReader::readObjectData(Main *bmain, float time)
{
Camera *bcam = static_cast<Camera *>(BKE_camera_add(bmain, m_data_name.c_str()));
ISampleSelector sample_sel(time);
CameraSample cam_sample;
m_schema.get(cam_sample, sample_sel);
ICompoundProperty customDataContainer = m_schema.getUserProperties();
if (customDataContainer.valid() &&
customDataContainer.getPropertyHeader("stereoDistance") &&
customDataContainer.getPropertyHeader("eyeSeparation"))
{
IFloatProperty convergence_plane(customDataContainer, "stereoDistance");
IFloatProperty eye_separation(customDataContainer, "eyeSeparation");
bcam->stereo.interocular_distance = eye_separation.getValue(sample_sel);
bcam->stereo.convergence_distance = convergence_plane.getValue(sample_sel);
}
const float lens = cam_sample.getFocalLength();
const float apperture_x = cam_sample.getHorizontalAperture();
const float apperture_y = cam_sample.getVerticalAperture();
const float h_film_offset = cam_sample.getHorizontalFilmOffset();
const float v_film_offset = cam_sample.getVerticalFilmOffset();
const float film_aspect = apperture_x / apperture_y;
bcam->lens = lens;
bcam->sensor_x = apperture_x * 10;
bcam->sensor_y = apperture_y * 10;
bcam->shiftx = h_film_offset / apperture_x;
bcam->shifty = v_film_offset / apperture_y / film_aspect;
bcam->clipsta = max_ff(0.1f, cam_sample.getNearClippingPlane());
bcam->clipend = cam_sample.getFarClippingPlane();
bcam->gpu_dof.focus_distance = cam_sample.getFocusDistance();
bcam->gpu_dof.fstop = cam_sample.getFStop();
m_object = BKE_object_add_only_object(bmain, OB_CAMERA, m_object_name.c_str());
m_object->data = bcam;
}
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