diff options
Diffstat (limited to 'source/blender/compositor/operations/COM_GlareSimpleStarOperation.cc')
-rw-r--r-- | source/blender/compositor/operations/COM_GlareSimpleStarOperation.cc | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_GlareSimpleStarOperation.cc b/source/blender/compositor/operations/COM_GlareSimpleStarOperation.cc new file mode 100644 index 00000000000..75c2ae51bde --- /dev/null +++ b/source/blender/compositor/operations/COM_GlareSimpleStarOperation.cc @@ -0,0 +1,102 @@ +/* + * 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. + * + * Copyright 2011, Blender Foundation. + */ + +#include "COM_GlareSimpleStarOperation.h" + +void GlareSimpleStarOperation::generateGlare(float *data, + MemoryBuffer *inputTile, + NodeGlare *settings) +{ + int i, x, y, ym, yp, xm, xp; + float c[4] = {0, 0, 0, 0}, tc[4] = {0, 0, 0, 0}; + const float f1 = 1.0f - settings->fade; + const float f2 = (1.0f - f1) * 0.5f; + + MemoryBuffer *tbuf1 = inputTile->duplicate(); + MemoryBuffer *tbuf2 = inputTile->duplicate(); + + bool breaked = false; + for (i = 0; i < settings->iter && (!breaked); i++) { + // // (x || x-1, y-1) to (x || x+1, y+1) + // // F + for (y = 0; y < this->getHeight() && (!breaked); y++) { + ym = y - i; + yp = y + i; + for (x = 0; x < this->getWidth(); x++) { + xm = x - i; + xp = x + i; + tbuf1->read(c, x, y); + mul_v3_fl(c, f1); + tbuf1->read(tc, (settings->star_45 ? xm : x), ym); + madd_v3_v3fl(c, tc, f2); + tbuf1->read(tc, (settings->star_45 ? xp : x), yp); + madd_v3_v3fl(c, tc, f2); + c[3] = 1.0f; + tbuf1->writePixel(x, y, c); + + tbuf2->read(c, x, y); + mul_v3_fl(c, f1); + tbuf2->read(tc, xm, (settings->star_45 ? yp : y)); + madd_v3_v3fl(c, tc, f2); + tbuf2->read(tc, xp, (settings->star_45 ? ym : y)); + madd_v3_v3fl(c, tc, f2); + c[3] = 1.0f; + tbuf2->writePixel(x, y, c); + } + if (isBraked()) { + breaked = true; + } + } + // // B + for (y = this->getHeight() - 1; y >= 0 && (!breaked); y--) { + ym = y - i; + yp = y + i; + for (x = this->getWidth() - 1; x >= 0; x--) { + xm = x - i; + xp = x + i; + tbuf1->read(c, x, y); + mul_v3_fl(c, f1); + tbuf1->read(tc, (settings->star_45 ? xm : x), ym); + madd_v3_v3fl(c, tc, f2); + tbuf1->read(tc, (settings->star_45 ? xp : x), yp); + madd_v3_v3fl(c, tc, f2); + c[3] = 1.0f; + tbuf1->writePixel(x, y, c); + + tbuf2->read(c, x, y); + mul_v3_fl(c, f1); + tbuf2->read(tc, xm, (settings->star_45 ? yp : y)); + madd_v3_v3fl(c, tc, f2); + tbuf2->read(tc, xp, (settings->star_45 ? ym : y)); + madd_v3_v3fl(c, tc, f2); + c[3] = 1.0f; + tbuf2->writePixel(x, y, c); + } + if (isBraked()) { + breaked = true; + } + } + } + + for (i = 0; i < this->getWidth() * this->getHeight() * 4; i++) { + data[i] = tbuf1->getBuffer()[i] + tbuf2->getBuffer()[i]; + } + + delete tbuf1; + delete tbuf2; +} |