Sergey Sharybin
473eff2df8
Based on an user feedback, previous implementation with providing decoupled X and Y speeds didn't work in production at all: there is no way to combine this speeds to an usable vector. So now we're providing speed vector output instead, which provides speed in an exactly the way Vector Blur node expects it to be: first two components is a speed from the past, second two components defines speed to the future. Old behavior can be achieved by RGBA separating the speed output and using first tow components. Now this speed gives quite the same results as a speed pass, with the only difference that track position speed uses "shutter" of 1 while pass uses shutter of 0.5 (and there's no way to affect on that?).
141 lines
4.1 KiB
C++
141 lines
4.1 KiB
C++
/*
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* Copyright 2012, Blender Foundation.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* Contributor:
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* Jeroen Bakker
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* Monique Dewanchand
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* Sergey Sharybin
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*/
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#include "COM_TrackPositionOperation.h"
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#include "MEM_guardedalloc.h"
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#include "BLI_listbase.h"
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#include "BLI_math.h"
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#include "BLI_math_color.h"
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extern "C" {
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# include "BKE_movieclip.h"
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# include "BKE_node.h"
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# include "BKE_tracking.h"
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}
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TrackPositionOperation::TrackPositionOperation() : NodeOperation()
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{
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this->addOutputSocket(COM_DT_VALUE);
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this->m_movieClip = NULL;
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this->m_framenumber = 0;
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this->m_trackingObjectName[0] = 0;
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this->m_trackName[0] = 0;
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this->m_axis = 0;
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this->m_position = CMP_TRACKPOS_ABSOLUTE;
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this->m_relativeFrame = 0;
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this->m_speed_output = false;
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}
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void TrackPositionOperation::initExecution()
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{
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MovieTracking *tracking = NULL;
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MovieClipUser user = {0};
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MovieTrackingObject *object;
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zero_v2(this->m_markerPos);
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zero_v2(this->m_relativePos);
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if (!this->m_movieClip)
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return;
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tracking = &this->m_movieClip->tracking;
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BKE_movieclip_user_set_frame(&user, this->m_framenumber);
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BKE_movieclip_get_size(this->m_movieClip, &user, &this->m_width, &this->m_height);
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object = BKE_tracking_object_get_named(tracking, this->m_trackingObjectName);
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if (object) {
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MovieTrackingTrack *track;
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track = BKE_tracking_track_get_named(tracking, object, this->m_trackName);
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if (track) {
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MovieTrackingMarker *marker;
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int clip_framenr = BKE_movieclip_remap_scene_to_clip_frame(this->m_movieClip, this->m_framenumber);
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marker = BKE_tracking_marker_get(track, clip_framenr);
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copy_v2_v2(this->m_markerPos, marker->pos);
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if (this->m_speed_output) {
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int relative_clip_framenr =
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BKE_movieclip_remap_scene_to_clip_frame(
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this->m_movieClip,
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this->m_relativeFrame);
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marker = BKE_tracking_marker_get_exact(track,
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relative_clip_framenr);
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if (marker != NULL && (marker->flag & MARKER_DISABLED) == 0) {
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copy_v2_v2(this->m_relativePos, marker->pos);
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}
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else {
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copy_v2_v2(this->m_relativePos, this->m_markerPos);
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}
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if (this->m_relativeFrame < this->m_framenumber) {
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swap_v2_v2(this->m_relativePos, this->m_markerPos);
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}
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}
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else if (this->m_position == CMP_TRACKPOS_RELATIVE_START) {
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int i;
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for (i = 0; i < track->markersnr; i++) {
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marker = &track->markers[i];
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if ((marker->flag & MARKER_DISABLED) == 0) {
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copy_v2_v2(this->m_relativePos, marker->pos);
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break;
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}
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}
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}
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else if (this->m_position == CMP_TRACKPOS_RELATIVE_FRAME) {
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int relative_clip_framenr = BKE_movieclip_remap_scene_to_clip_frame(this->m_movieClip,
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this->m_relativeFrame);
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marker = BKE_tracking_marker_get(track, relative_clip_framenr);
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copy_v2_v2(this->m_relativePos, marker->pos);
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}
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}
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}
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}
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void TrackPositionOperation::executePixelSampled(float output[4],
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float /*x*/, float /*y*/,
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PixelSampler /*sampler*/)
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{
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output[0] = this->m_markerPos[this->m_axis] - this->m_relativePos[this->m_axis];
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if (this->m_axis == 0)
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output[0] *= this->m_width;
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else
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output[0] *= this->m_height;
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}
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void TrackPositionOperation::determineResolution(unsigned int resolution[2], unsigned int preferredResolution[2])
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{
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resolution[0] = preferredResolution[0];
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resolution[1] = preferredResolution[1];
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}
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