diff options
Diffstat (limited to 'source/blender/compositor/operations/COM_DistanceMatteOperation.cpp')
-rw-r--r-- | source/blender/compositor/operations/COM_DistanceMatteOperation.cpp | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_DistanceMatteOperation.cpp b/source/blender/compositor/operations/COM_DistanceMatteOperation.cpp new file mode 100644 index 00000000000..bef470ca9de --- /dev/null +++ b/source/blender/compositor/operations/COM_DistanceMatteOperation.cpp @@ -0,0 +1,86 @@ +/* + * 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: + * Dalai Felinto + */ + +#include "COM_DistanceMatteOperation.h" +#include "BLI_math.h" + +DistanceMatteOperation::DistanceMatteOperation(): NodeOperation() { + addInputSocket(COM_DT_COLOR); + addInputSocket(COM_DT_COLOR); + addOutputSocket(COM_DT_VALUE); + + inputImageProgram = NULL; + inputKeyProgram = NULL; +} + +void DistanceMatteOperation::initExecution() { + this->inputImageProgram = this->getInputSocketReader(0); + this->inputKeyProgram = this->getInputSocketReader(1); +} + +void DistanceMatteOperation::deinitExecution() { + this->inputImageProgram= NULL; + this->inputKeyProgram= NULL; +} + +void DistanceMatteOperation::executePixel(float* outputValue, float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[]) { + float inKey[4]; + float inImage[4]; + + const float tolerence=this->settings->t1; + const float falloff=this->settings->t2; + + float distance; + float alpha; + + this->inputKeyProgram->read(inKey, x, y, sampler, inputBuffers); + this->inputImageProgram->read(inImage, x, y, sampler, inputBuffers); + + distance = sqrt(pow((inKey[0]-inImage[0]),2)+ + pow((inKey[1]-inImage[1]),2)+ + pow((inKey[2]-inImage[2]),2)); + + /* store matte(alpha) value in [0] to go with + * COM_SetAlphaOperation and the Value output + */ + + /*make 100% transparent */ + if(distance < tolerence) { + outputValue[0]=0.f; + } + /*in the falloff region, make partially transparent */ + else if(distance < falloff+tolerence){ + distance=distance-tolerence; + alpha=distance/falloff; + /*only change if more transparent than before */ + if(alpha < inImage[3]) { + outputValue[0]=alpha; + } + else { /* leave as before */ + outputValue[0]=inImage[3]; + } + } + else { + /* leave as before */ + outputValue[0]=inImage[3]; + } +} + |