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/*
* Copyright 2011, 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:
* Jeroen Bakker
* Monique Dewanchand
*/
#include "COM_BokehImageOperation.h"
#include "BLI_math.h"
BokehImageOperation::BokehImageOperation(): NodeOperation() {
this->addOutputSocket(COM_DT_COLOR);
this->deleteData = false;
}
void BokehImageOperation::initExecution() {
this->centerX = getWidth() / 2;
this->centerY = getHeight() / 2;
this->center[0] = this->centerX;
this->center[1] = this->centerY;
this->inverseRounding = 1.0-this->data->rounding;
this->circularDistance = getWidth()/2;
this->flapRad = (M_PI*2)/this->data->flaps;
this->flapRadAdd = (this->data->angle/360.0)*M_PI*2;
if (this->flapRadAdd>M_PI) {
this->flapRadAdd-=M_PI*2;
}
}
void BokehImageOperation::detemineStartPointOfFlap(float r[2], int flapNumber, float distance) {
r[0] = sin(flapRad*flapNumber + flapRadAdd)*distance+centerX;
r[1] = cos(flapRad*flapNumber + flapRadAdd)*distance+centerY;
}
float BokehImageOperation::isInsideBokeh(float distance, float x, float y) {
float insideBokeh = 0.0;
const float deltaX = x - centerX;
const float deltaY = y - centerY;
float closestPoint[2];
float lineP1[2];
float lineP2[2];
float point[2];
point[0] = x;
point[1] = y;
const float distanceToCenter = len_v2v2(point, center);
const float bearing = (atan2f(deltaX, deltaY) + (M_PI*2));
int flapNumber = (int)((bearing-flapRadAdd)/flapRad);
detemineStartPointOfFlap(lineP1, flapNumber, distance);
detemineStartPointOfFlap(lineP2, flapNumber+1, distance);
closest_to_line_v2(closestPoint, point, lineP1, lineP2);
const float distanceLineToCenter = len_v2v2(center, closestPoint);
const float distanceRoundingToCenter = inverseRounding*distanceLineToCenter+this->data->rounding*distance;
const float catadioptricDistanceToCenter = distanceRoundingToCenter*this->data->catadioptric;
if (distanceRoundingToCenter>=distanceToCenter && catadioptricDistanceToCenter<=distanceToCenter) {
if (distanceRoundingToCenter-distanceToCenter<1.0) {
insideBokeh = (distanceRoundingToCenter-distanceToCenter);
} else if (this->data->catadioptric != 0.0 && distanceToCenter-catadioptricDistanceToCenter<1.0) {
insideBokeh = (distanceToCenter-catadioptricDistanceToCenter);
} else {
insideBokeh = 1.0;
}
}
return insideBokeh;
}
void BokehImageOperation::executePixel(float* color, float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[]) {
float shift = this->data->lensshift;
float shift2 = shift/2.0f;
float distance = this->circularDistance;
float insideBokehMax = isInsideBokeh(distance, x, y);
float insideBokehMed = isInsideBokeh(distance-fabs(shift2*distance), x, y);
float insideBokehMin = isInsideBokeh(distance-fabs(shift*distance), x, y);
if (shift<0) {
color[0] = insideBokehMax;
color[1] = insideBokehMed;
color[2] = insideBokehMin;
} else {
color[0] = insideBokehMin;
color[1] = insideBokehMed;
color[2] = insideBokehMax;
}
color[3] = 1.0f;
}
void BokehImageOperation::deinitExecution() {
if (deleteData) {
if (data) {
delete data;
data = NULL;
}
}
}
void BokehImageOperation::determineResolution(unsigned int resolution[], unsigned int preferredResolution[]) {
resolution[0] = 512;
resolution[1] = 512;
}
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