void BlenderSync::sync_motion(BL::SpaceView3D b_v3d, BL::Object b_override, void **python_thread_state)
{
if(scene->need_motion() == Scene::MOTION_NONE)
return;
/* get camera object here to deal with camera switch */
BL::Object b_cam = b_scene.camera();
if(b_override)
b_cam = b_override;
Camera prevcam = *(scene->camera);
/* go back and forth one frame */
int frame = b_scene.frame_current();
for(int motion = -1; motion <= 1; motion += 2) {
/* we need to set the python thread state again because this
* function assumes it is being executed from python and will
* try to save the thread state */
python_thread_state_restore(python_thread_state);
b_scene.frame_set(frame + motion, 0.0f);
python_thread_state_save(python_thread_state);
/* camera object */
if(b_cam)
sync_camera_motion(b_cam, motion);
/* mesh objects */
sync_objects(b_v3d, motion);
}
/* we need to set the python thread state again because this
* function assumes it is being executed from python and will
* try to save the thread state */
python_thread_state_restore(python_thread_state);
b_scene.frame_set(frame, 0.0f);
python_thread_state_save(python_thread_state);
/* tag camera for motion update */
if(scene->camera->motion_modified(prevcam))
scene->camera->tag_update();
}
void BlenderSync::sync_motion(BL::RenderSettings &b_render,
BL::Depsgraph &b_depsgraph,
BL::Object &b_override,
int width,
int height,
void **python_thread_state)
{
if (scene->need_motion() == Scene::MOTION_NONE)
return;
/* get camera object here to deal with camera switch */
BL::Object b_cam = b_scene.camera();
if (b_override)
b_cam = b_override;
Camera prevcam = *(scene->camera);
int frame_center = b_scene.frame_current();
float subframe_center = b_scene.frame_subframe();
float frame_center_delta = 0.0f;
if (scene->need_motion() != Scene::MOTION_PASS &&
scene->camera->motion_position != Camera::MOTION_POSITION_CENTER) {
float shuttertime = scene->camera->shuttertime;
if (scene->camera->motion_position == Camera::MOTION_POSITION_END) {
frame_center_delta = -shuttertime * 0.5f;
}
else {
assert(scene->camera->motion_position == Camera::MOTION_POSITION_START);
frame_center_delta = shuttertime * 0.5f;
}
float time = frame_center + subframe_center + frame_center_delta;
int frame = (int)floorf(time);
float subframe = time - frame;
python_thread_state_restore(python_thread_state);
b_engine.frame_set(frame, subframe);
python_thread_state_save(python_thread_state);
sync_camera_motion(b_render, b_cam, width, height, 0.0f);
sync_objects(b_depsgraph, 0.0f);
}
/* always sample these times for camera motion */
motion_times.insert(-1.0f);
motion_times.insert(1.0f);
/* note iteration over motion_times set happens in sorted order */
foreach (float relative_time, motion_times) {
/* center time is already handled. */
if (relative_time == 0.0f) {
continue;
}
VLOG(1) << "Synchronizing motion for the relative time " << relative_time << ".";
/* fixed shutter time to get previous and next frame for motion pass */
float shuttertime = scene->motion_shutter_time();
/* compute frame and subframe time */
float time = frame_center + subframe_center + frame_center_delta +
relative_time * shuttertime * 0.5f;
int frame = (int)floorf(time);
float subframe = time - frame;
/* change frame */
python_thread_state_restore(python_thread_state);
b_engine.frame_set(frame, subframe);
python_thread_state_save(python_thread_state);
/* sync camera, only supports two times at the moment */
if (relative_time == -1.0f || relative_time == 1.0f) {
sync_camera_motion(b_render, b_cam, width, height, relative_time);
}
/* sync object */
sync_objects(b_depsgraph, relative_time);
}
/* we need to set the python thread state again because this
* function assumes it is being executed from python and will
* try to save the thread state */
python_thread_state_restore(python_thread_state);
b_engine.frame_set(frame_center, subframe_center);
python_thread_state_save(python_thread_state);
/* tag camera for motion update */
if (scene->camera->motion_modified(prevcam))
scene->camera->tag_update();
}