opencv/modules/viz/src/vtk/vtkImageMatSource.cpp at master · pythonmjs/opencv · GitHub

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/*M///////////////////////////////////////////////////////////////////////////////////////

// IMPORTANT: READ BEFORE DOWNLOADING, COPYING, INSTALLING OR USING.

// By downloading, copying, installing or using the software you agree to this license.

// If you do not agree to this license, do not download, install,

// copy or use the software.

// License Agreement

// For Open Source Computer Vision Library

// Third party copyrights are property of their respective owners.

// Redistribution and use in source and binary forms, with or without modification,

// are permitted provided that the following conditions are met:

// * Redistribution's of source code must retain the above copyright notice,

// this list of conditions and the following disclaimer.

// * Redistribution's in binary form must reproduce the above copyright notice,

// this list of conditions and the following disclaimer in the documentation

// and/or other materials provided with the distribution.

// * The name of the copyright holders may not be used to endorse or promote products

// derived from this software without specific prior written permission.

// This software is provided by the copyright holders and contributors "as is" and

// any express or implied warranties, including, but not limited to, the implied

// warranties of merchantability and fitness for a particular purpose are disclaimed.

// In no event shall the Intel Corporation or contributors be liable for any direct,

// indirect, incidental, special, exemplary, or consequential damages

// (including, but not limited to, procurement of substitute goods or services;

// loss of use, data, or profits; or business interruption) however caused

// and on any theory of liability, whether in contract, strict liability,

// or tort (including negligence or otherwise) arising in any way out of

// the use of this software, even if advised of the possibility of such damage.

// Authors:

// * Anatoly Baksheev, Itseez Inc. myname.mysurname <> mycompany.com

//M*/

#include "../precomp.hpp"

namespace cv { namespace viz

{

vtkStandardNewMacro(vtkImageMatSource);

}}

cv::viz::vtkImageMatSource::vtkImageMatSource()

{

this->SetNumberOfInputPorts(0);

this->ImageData = vtkSmartPointer<vtkImageData>::New();

}

int cv::viz::vtkImageMatSource::RequestInformation(vtkInformation *, vtkInformationVector**, vtkInformationVector *outputVector)

{

vtkInformation* outInfo = outputVector->GetInformationObject(0);

outInfo->Set(vtkStreamingDemandDrivenPipeline::WHOLE_EXTENT(), this->ImageData->GetExtent(), 6);

outInfo->Set(vtkDataObject::SPACING(), 1.0, 1.0, 1.0);

outInfo->Set(vtkDataObject::ORIGIN(), 0.0, 0.0, 0.0);

vtkDataObject::SetPointDataActiveScalarInfo(outInfo, this->ImageData->GetScalarType(), this->ImageData->GetNumberOfScalarComponents());

return 1;

}

int cv::viz::vtkImageMatSource::RequestData(vtkInformation*, vtkInformationVector**, vtkInformationVector *outputVector)

{

vtkInformation *outInfo = outputVector->GetInformationObject(0);

vtkImageData *output = vtkImageData::SafeDownCast(outInfo->Get(vtkDataObject::DATA_OBJECT()) );

output->ShallowCopy(this->ImageData);

return 1;

}

void cv::viz::vtkImageMatSource::SetImage(InputArray _image)

{

CV_Assert(_image.depth() == CV_8U && (_image.channels() == 1 || _image.channels() == 3 || _image.channels() == 4));

Mat image = _image.getMat();

this->ImageData->SetDimensions(image.cols, image.rows, 1);

#if VTK_MAJOR_VERSION <= 5

this->ImageData->SetNumberOfScalarComponents(image.channels());

this->ImageData->SetScalarTypeToUnsignedChar();

this->ImageData->AllocateScalars();

#else

this->ImageData->AllocateScalars(VTK_UNSIGNED_CHAR, image.channels());

#endif

switch(image.channels())

{

case 1: copyGrayImage(image, this->ImageData); break;

case 3: copyRGBImage (image, this->ImageData); break;

case 4: copyRGBAImage(image, this->ImageData); break;

}

this->ImageData->Modified();

}

void cv::viz::vtkImageMatSource::copyGrayImage(const Mat &source, vtkSmartPointer<vtkImageData> output)

{

unsigned char* dptr = reinterpret_cast<unsigned char*>(output->GetScalarPointer());

size_t elem_step = output->GetIncrements()[1]/sizeof(unsigned char);

for (int y = 0; y < source.rows; ++y)

{

unsigned char* drow = dptr + elem_step * y;

const unsigned char *srow = source.ptr<unsigned char>(y);

for (int x = 0; x < source.cols; ++x)

drow[x] = *srow++;

}

void cv::viz::vtkImageMatSource::copyRGBImage(const Mat &source, vtkSmartPointer<vtkImageData> output)

{

Vec3b* dptr = reinterpret_cast<Vec3b*>(output->GetScalarPointer());

size_t elem_step = output->GetIncrements()[1]/sizeof(Vec3b);

for (int y = 0; y < source.rows; ++y)

{

Vec3b* drow = dptr + elem_step * y;

const unsigned char *srow = source.ptr<unsigned char>(y);

for (int x = 0; x < source.cols; ++x, srow += source.channels())

drow[x] = Vec3b(srow[2], srow[1], srow[0]);

}

void cv::viz::vtkImageMatSource::copyRGBAImage(const Mat &source, vtkSmartPointer<vtkImageData> output)

{

Vec4b* dptr = reinterpret_cast<Vec4b*>(output->GetScalarPointer());

size_t elem_step = output->GetIncrements()[1]/sizeof(Vec4b);

for (int y = 0; y < source.rows; ++y)

{

Vec4b* drow = dptr + elem_step * y;

const unsigned char *srow = source.ptr<unsigned char>(y);

for (int x = 0; x < source.cols; ++x, srow += source.channels())

drow[x] = Vec4b(srow[2], srow[1], srow[0], srow[3]);

}

opencv/modules/viz/src/vtk/vtkImageMatSource.cpp at master · pythonmjs/opencv · GitHub

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