Sergey Sharybin
2339a84443
velocity is measured in pixels per frame. It is basically a coordinate difference of track coordinate at current frame and previous one (no future prediction happens). It's not really most intuitive place for such a things, but historically the node was called this way.. Track velocity could be used to face effects like motion blur bu piping it to the vector blur node. Reviewers: campbellbarton Reviewed By: campbellbarton Subscribers: hype, sebastian_k Differential Revision: https://developer.blender.org/D1591
105 lines
3.9 KiB
C++
105 lines
3.9 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_TrackPositionNode.h"
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#include "COM_ExecutionSystem.h"
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#include "COM_TrackPositionOperation.h"
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extern "C" {
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# include "DNA_movieclip_types.h"
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# include "BKE_node.h"
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}
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TrackPositionNode::TrackPositionNode(bNode *editorNode) : Node(editorNode)
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{
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/* pass */
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}
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void TrackPositionNode::convertToOperations(NodeConverter &converter, const CompositorContext &context) const
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{
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bNode *editorNode = this->getbNode();
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MovieClip *clip = (MovieClip *) editorNode->id;
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NodeTrackPosData *trackpos_data = (NodeTrackPosData *) editorNode->storage;
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NodeOutput *outputX = this->getOutputSocket(0);
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NodeOutput *outputY = this->getOutputSocket(1);
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NodeOutput *outputSpeedX = this->getOutputSocket(2);
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NodeOutput *outputSpeedY = this->getOutputSocket(3);
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int frame_number;
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if (editorNode->custom1 == CMP_TRACKPOS_ABSOLUTE_FRAME) {
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frame_number = editorNode->custom2;
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}
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else {
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frame_number = context.getFramenumber();
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}
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TrackPositionOperation *operationX = new TrackPositionOperation();
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operationX->setMovieClip(clip);
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operationX->setTrackingObject(trackpos_data->tracking_object);
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operationX->setTrackName(trackpos_data->track_name);
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operationX->setFramenumber(frame_number);
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operationX->setAxis(0);
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operationX->setPosition(editorNode->custom1);
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operationX->setRelativeFrame(editorNode->custom2);
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converter.addOperation(operationX);
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TrackPositionOperation *operationY = new TrackPositionOperation();
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operationY->setMovieClip(clip);
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operationY->setTrackingObject(trackpos_data->tracking_object);
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operationY->setTrackName(trackpos_data->track_name);
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operationY->setFramenumber(frame_number);
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operationY->setAxis(1);
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operationY->setPosition(editorNode->custom1);
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operationY->setRelativeFrame(editorNode->custom2);
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converter.addOperation(operationY);
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TrackPositionOperation *operationSpeedX = new TrackPositionOperation();
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operationSpeedX->setMovieClip(clip);
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operationSpeedX->setTrackingObject(trackpos_data->tracking_object);
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operationSpeedX->setTrackName(trackpos_data->track_name);
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operationSpeedX->setFramenumber(frame_number);
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operationSpeedX->setAxis(0);
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operationSpeedX->setPosition(editorNode->custom1);
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operationSpeedX->setRelativeFrame(editorNode->custom2);
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operationSpeedX->setSpeedOutput(true);
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converter.addOperation(operationSpeedX);
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TrackPositionOperation *operationSpeedY = new TrackPositionOperation();
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operationSpeedY->setMovieClip(clip);
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operationSpeedY->setTrackingObject(trackpos_data->tracking_object);
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operationSpeedY->setTrackName(trackpos_data->track_name);
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operationSpeedY->setFramenumber(frame_number);
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operationSpeedY->setAxis(1);
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operationSpeedY->setPosition(editorNode->custom1);
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operationSpeedY->setRelativeFrame(editorNode->custom2);
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operationSpeedY->setSpeedOutput(true);
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converter.addOperation(operationSpeedY);
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converter.mapOutputSocket(outputX, operationX->getOutputSocket());
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converter.mapOutputSocket(outputY, operationY->getOutputSocket());
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converter.mapOutputSocket(outputSpeedX, operationSpeedX->getOutputSocket());
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converter.mapOutputSocket(outputSpeedY, operationSpeedY->getOutputSocket());
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}
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