diff options
Diffstat (limited to 'source/blender/compositor/operations/COM_ColorMatteOperation.cpp')
-rw-r--r-- | source/blender/compositor/operations/COM_ColorMatteOperation.cpp | 80 |
1 files changed, 80 insertions, 0 deletions
diff --git a/source/blender/compositor/operations/COM_ColorMatteOperation.cpp b/source/blender/compositor/operations/COM_ColorMatteOperation.cpp new file mode 100644 index 00000000000..a80788ddd33 --- /dev/null +++ b/source/blender/compositor/operations/COM_ColorMatteOperation.cpp @@ -0,0 +1,80 @@ +/* + * 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_ColorMatteOperation.h" +#include "BLI_math.h" + +ColorMatteOperation::ColorMatteOperation(): NodeOperation() { + addInputSocket(COM_DT_COLOR); + addInputSocket(COM_DT_COLOR); + addOutputSocket(COM_DT_VALUE); + + inputImageProgram = NULL; + inputKeyProgram = NULL; +} + +void ColorMatteOperation::initExecution() { + this->inputImageProgram = this->getInputSocketReader(0); + this->inputKeyProgram = this->getInputSocketReader(1); +} + +void ColorMatteOperation::deinitExecution() { + this->inputImageProgram= NULL; + this->inputKeyProgram= NULL; +} + +void ColorMatteOperation::executePixel(float* outputValue, float x, float y, PixelSampler sampler, MemoryBuffer *inputBuffers[]) { + float inColor[4]; + float inKey[4]; + + const float hue=this->settings->t1; + const float sat=this->settings->t2; + const float val=this->settings->t3; + + float h_wrap; + + this->inputImageProgram->read(inColor, x, y, sampler, inputBuffers); + this->inputKeyProgram->read(inKey, x, y, sampler, inputBuffers); + + + /* store matte(alpha) value in [0] to go with + * COM_SetAlphaOperation and the Value output + */ + + if( + /* do hue last because it needs to wrap, and does some more checks */ + + /* sat */ (fabsf(inColor[1]-inKey[1]) < sat) && + /* val */ (fabsf(inColor[2]-inKey[2]) < val) && + + /* multiply by 2 because it wraps on both sides of the hue, + * otherwise 0.5 would key all hue's */ + + /* hue */ ((h_wrap= 2.f * fabsf(inColor[0]-inKey[0])) < hue || (2.f - h_wrap) < hue) + ) { + outputValue[0]=0.f; /*make transparent*/ + } + + else { /*pixel is outside key color */ + outputValue[0]=inColor[3]; /* make pixel just as transparent as it was before */ + } +} + |