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/*
* Copyright 2013, Blender Foundation.
*
* 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:
* Sergey Sharybin
*/
#include "COM_PlaneTrackMaskOperation.h"
#include "MEM_guardedalloc.h"
#include "BLI_listbase.h"
#include "BLI_math.h"
#include "BLI_math_color.h"
extern "C" {
#include "BLI_jitter.h"
#include "BKE_movieclip.h"
#include "BKE_node.h"
#include "BKE_tracking.h"
}
PlaneTrackMaskOperation::PlaneTrackMaskOperation() : PlaneTrackCommonOperation()
{
this->addOutputSocket(COM_DT_VALUE);
/* Currently hardcoded to 8 samples. */
this->m_osa = 8;
}
void PlaneTrackMaskOperation::initExecution()
{
PlaneTrackCommonOperation::initExecution();
BLI_jitter_init(this->m_jitter[0], this->m_osa);
}
void PlaneTrackMaskOperation::executePixelSampled(float output[4], float x, float y, PixelSampler sampler)
{
float point[2];
int inside_counter = 0;
for (int sample = 0; sample < this->m_osa; sample++) {
point[0] = x + this->m_jitter[sample][0];
point[1] = y + this->m_jitter[sample][1];
if (isect_point_tri_v2(point, this->m_frameSpaceCorners[0], this->m_frameSpaceCorners[1], this->m_frameSpaceCorners[2]) ||
isect_point_tri_v2(point, this->m_frameSpaceCorners[0], this->m_frameSpaceCorners[2], this->m_frameSpaceCorners[3]))
{
inside_counter++;
}
}
output[0] = (float) inside_counter / this->m_osa;
}
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