1 files changed, 81 insertions, 0 deletions
diff --git a/source/blender/alembic/intern/abc_writer_camera.cc b/source/blender/alembic/intern/abc_writer_camera.cc
new file mode 100644
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+++ b/source/blender/alembic/intern/abc_writer_camera.cc
@@ -0,0 +1,81 @@
+/*
+ * 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_camera.h"
+#include "abc_writer_transform.h"
+
+extern "C" {
+#include "DNA_camera_types.h"
+#include "DNA_object_types.h"
+}
+
+using Alembic::AbcGeom::OCamera;
+using Alembic::AbcGeom::OFloatProperty;
+
+AbcCameraWriter::AbcCameraWriter(Object *ob,
+                                 AbcTransformWriter *parent,
+                                 uint32_t time_sampling,
+                                 ExportSettings &settings)
+    : AbcObjectWriter(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->clip_start);
+  m_camera_sample.setFarClippingPlane(cam->clip_end);
+
+  if (cam->dof.focus_object) {
+    Imath::V3f v(m_object->loc[0] - cam->dof.focus_object->loc[0],
+                 m_object->loc[1] - cam->dof.focus_object->loc[1],
+                 m_object->loc[2] - cam->dof.focus_object->loc[2]);
+    m_camera_sample.setFocusDistance(v.length());
+  }
+  else {
+    m_camera_sample.setFocusDistance(cam->dof.focus_distance);
+  }
+
+  /* Blender camera does not have an fstop param, so try to find a custom prop
+   * instead. */
+  m_camera_sample.setFStop(cam->dof.aperture_fstop);
+
+  m_camera_sample.setLensSqueezeRatio(1.0);
+  m_camera_schema.set(m_camera_sample);
+}