2020-05-29 01:00:33 +00:00
|
|
|
//============================================================================
|
|
|
|
// Copyright (c) Kitware, Inc.
|
|
|
|
// All rights reserved.
|
|
|
|
// See LICENSE.txt for details.
|
|
|
|
//
|
|
|
|
// This software is distributed WITHOUT ANY WARRANTY; without even
|
|
|
|
// the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
|
|
|
// PURPOSE. See the above copyright notice for more information.
|
|
|
|
//============================================================================
|
|
|
|
|
|
|
|
#include <vtkm/io/ImageWriterPNG.h>
|
|
|
|
|
|
|
|
#include <vtkm/io/PixelTypes.h>
|
|
|
|
|
|
|
|
VTKM_THIRDPARTY_PRE_INCLUDE
|
|
|
|
#include <vtkm/thirdparty/lodepng/vtkmlodepng/lodepng.h>
|
|
|
|
VTKM_THIRDPARTY_POST_INCLUDE
|
|
|
|
|
|
|
|
namespace vtkm
|
|
|
|
{
|
|
|
|
namespace io
|
|
|
|
{
|
|
|
|
|
2020-08-17 14:18:24 +00:00
|
|
|
ImageWriterPNG::~ImageWriterPNG() noexcept {}
|
2020-05-29 01:00:33 +00:00
|
|
|
|
|
|
|
void ImageWriterPNG::Write(vtkm::Id width, vtkm::Id height, const ColorArrayType& pixels)
|
|
|
|
{
|
|
|
|
switch (this->Depth)
|
|
|
|
{
|
|
|
|
case PixelDepth::PIXEL_8:
|
|
|
|
this->WriteToFile<vtkm::io::RGBPixel_8>(width, height, pixels);
|
|
|
|
break;
|
|
|
|
case PixelDepth::PIXEL_16:
|
|
|
|
WriteToFile<vtkm::io::RGBPixel_16>(width, height, pixels);
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
template <typename PixelType>
|
|
|
|
void ImageWriterPNG::WriteToFile(vtkm::Id width, vtkm::Id height, const ColorArrayType& pixels)
|
|
|
|
{
|
|
|
|
auto pixelPortal = pixels.ReadPortal();
|
|
|
|
std::vector<unsigned char> imageData(static_cast<typename std::vector<unsigned char>::size_type>(
|
|
|
|
pixels.GetNumberOfValues() * PixelType::BYTES_PER_PIXEL));
|
|
|
|
|
|
|
|
// Write out the data starting from the end (Images are stored Bottom-Left to Top-Right,
|
|
|
|
// but are viewed from Top-Left to Bottom-Right)
|
|
|
|
vtkm::Id pngIndex = 0;
|
|
|
|
for (vtkm::Id yIndex = height - 1; yIndex >= 0; yIndex--)
|
|
|
|
{
|
|
|
|
for (vtkm::Id xIndex = 0; xIndex < width; xIndex++)
|
|
|
|
{
|
|
|
|
vtkm::Id vtkmIndex = yIndex * width + xIndex;
|
|
|
|
PixelType(pixelPortal.Get(vtkmIndex)).FillImageAtIndexWithPixel(imageData.data(), pngIndex);
|
|
|
|
pngIndex++;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
2022-08-23 01:54:49 +00:00
|
|
|
vtkm::png::lodepng_encode_file(
|
|
|
|
this->FileName.c_str(),
|
|
|
|
imageData.data(),
|
|
|
|
static_cast<unsigned>(width),
|
|
|
|
static_cast<unsigned>(height),
|
|
|
|
static_cast<vtkm::png::LodePNGColorType>(PixelType::GetColorType()),
|
|
|
|
PixelType::GetBitDepth());
|
2020-05-29 01:00:33 +00:00
|
|
|
}
|
|
|
|
}
|
|
|
|
} // namespace vtkm::io
|