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Viewing changes to source/blender/compositor/operations/COM_DistanceRGBMatteOperation.cpp

  • Committer: Package Import Robot
  • Author(s): Jeremy Bicha
  • Date: 2013-03-06 12:08:47 UTC
  • mfrom: (1.5.1) (14.1.8 experimental)
  • Revision ID: package-import@ubuntu.com-20130306120847-frjfaryb2zrotwcg
Tags: 2.66a-1ubuntu1
https://launchpad.net/bugs/1076930
https://launchpad.net/bugs/1089256
https://launchpad.net/bugs/1052743
https://launchpad.net/bugs/999024
* Resynchronize with Debian (LP: #1076930, #1089256, #1052743, #999024,
  #1122888, #1147084)
* debian/control:
  - Lower build-depends on libavcodec-dev since we're not
    doing the libav9 transition in Ubuntu yet

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source/blender/compositor/operations/COM_DistanceRGBMatteOperation.cpp
 
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/*
 
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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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 *              Dalai Felinto
 
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 */
 
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#include "COM_DistanceRGBMatteOperation.h"
 
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#include "BLI_math.h"
 
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DistanceRGBMatteOperation::DistanceRGBMatteOperation() : NodeOperation()
 
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{
 
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        this->addInputSocket(COM_DT_COLOR);
 
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        this->addInputSocket(COM_DT_COLOR);
 
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        this->addOutputSocket(COM_DT_VALUE);
 
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        this->m_inputImageProgram = NULL;
 
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        this->m_inputKeyProgram = NULL;
 
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}
 
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void DistanceRGBMatteOperation::initExecution()
 
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{
 
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        this->m_inputImageProgram = this->getInputSocketReader(0);
 
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        this->m_inputKeyProgram = this->getInputSocketReader(1);
 
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}
 
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void DistanceRGBMatteOperation::deinitExecution()
 
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{
 
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        this->m_inputImageProgram = NULL;
 
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        this->m_inputKeyProgram = NULL;
 
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}
 
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float DistanceRGBMatteOperation::calculateDistance(float key[4], float image[4])
 
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{
 
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        return len_v3v3(key, image);
 
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}
 
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void DistanceRGBMatteOperation::executePixel(float output[4], float x, float y, PixelSampler sampler)
 
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{
 
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        float inKey[4];
 
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        float inImage[4];
 
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        const float tolerance = this->m_settings->t1;
 
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        const float falloff = this->m_settings->t2;
 
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        float distance;
 
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        float alpha;
 
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        this->m_inputKeyProgram->read(inKey, x, y, sampler);
 
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        this->m_inputImageProgram->read(inImage, x, y, sampler);
 
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        distance = this->calculateDistance(inKey, inImage);
 
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        /* store matte(alpha) value in [0] to go with
 
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         * COM_SetAlphaOperation and the Value output
 
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         */
 
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        /*make 100% transparent */
 
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        if (distance < tolerance) {
 
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                output[0] = 0.f;
 
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        }
 
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        /*in the falloff region, make partially transparent */
 
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        else if (distance < falloff + tolerance) {
 
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                distance = distance - tolerance;
 
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                alpha = distance / falloff;
 
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                /*only change if more transparent than before */
 
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                if (alpha < inImage[3]) {
 
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                        output[0] = alpha;
 
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                }
 
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                else { /* leave as before */
 
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                        output[0] = inImage[3];
 
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                }
 
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        }
 
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        else {
 
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                /* leave as before */
 
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                output[0] = inImage[3];
 
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        }
 
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}