105 lines
3.0 KiB
C++
105 lines
3.0 KiB
C++
/*
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* Copyright 2011, 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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*/
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#include "COM_GlareSimpleStarOperation.h"
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void GlareSimpleStarOperation::generateGlare(float *data, MemoryBuffer *inputTile, NodeGlare *settings)
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{
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int i, x, y, ym, yp, xm, xp;
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float c[4] = {0, 0, 0, 0}, tc[4] = {0, 0, 0, 0};
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const float f1 = 1.0f - settings->fade;
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const float f2 = (1.0f - f1) * 0.5f;
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MemoryBuffer *tbuf1 = inputTile->duplicate();
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MemoryBuffer *tbuf2 = inputTile->duplicate();
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bool breaked = false;
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for (i = 0; i < settings->iter && (!breaked); i++) {
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// // (x || x-1, y-1) to (x || x+1, y+1)
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// // F
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for (y = 0; y < this->getHeight() && (!breaked); y++) {
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ym = y - i;
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yp = y + i;
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for (x = 0; x < this->getWidth(); x++) {
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xm = x - i;
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xp = x + i;
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tbuf1->read(c, x, y);
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mul_v3_fl(c, f1);
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tbuf1->read(tc, (settings->angle ? xm : x), ym);
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madd_v3_v3fl(c, tc, f2);
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tbuf1->read(tc, (settings->angle ? xp : x), yp);
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madd_v3_v3fl(c, tc, f2);
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c[3] = 1.0f;
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tbuf1->writePixel(x, y, c);
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tbuf2->read(c, x, y);
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mul_v3_fl(c, f1);
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tbuf2->read(tc, xm, (settings->angle ? yp : y));
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madd_v3_v3fl(c, tc, f2);
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tbuf2->read(tc, xp, (settings->angle ? ym : y));
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madd_v3_v3fl(c, tc, f2);
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c[3] = 1.0f;
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tbuf2->writePixel(x, y, c);
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}
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if (isBreaked()) {
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breaked = true;
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}
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}
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// // B
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for (y = tbuf1->getHeight() - 1 && (!breaked); y >= 0; y--) {
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ym = y - i;
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yp = y + i;
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for (x = tbuf1->getWidth() - 1; x >= 0; x--) {
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xm = x - i;
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xp = x + i;
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tbuf1->read(c, x, y);
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mul_v3_fl(c, f1);
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tbuf1->read(tc, (settings->angle ? xm : x), ym);
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madd_v3_v3fl(c, tc, f2);
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tbuf1->read(tc, (settings->angle ? xp : x), yp);
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madd_v3_v3fl(c, tc, f2);
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c[3] = 1.0f;
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tbuf1->writePixel(x, y, c);
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tbuf2->read(c, x, y);
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mul_v3_fl(c, f1);
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tbuf2->read(tc, xm, (settings->angle ? yp : y));
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madd_v3_v3fl(c, tc, f2);
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tbuf2->read(tc, xp, (settings->angle ? ym : y));
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madd_v3_v3fl(c, tc, f2);
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c[3] = 1.0f;
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tbuf2->writePixel(x, y, c);
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}
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if (isBreaked()) {
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breaked = true;
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}
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}
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}
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for (i = 0; i < this->getWidth() * this->getHeight() * 4; i++) {
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data[i] = tbuf1->getBuffer()[i] + tbuf2->getBuffer()[i];
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}
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delete tbuf1;
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delete tbuf2;
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}
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