// static
bool PortableFloatMapIO::write( const std::string& filename, Array2DReadView< Vector4f > image )
{
int w = image.width();
int h = image.height();
// use "wb" binary mode to ensure that on Windows,
// newlines in the header are written out as '\n'
FILE* pFile = fopen( filename.c_str(), "wb" );
if( pFile == nullptr )
{
return false;
}
// write header
int nCharsWritten = fprintf( pFile, "PF4\n%d %d\n-1\n", w, h );
if( nCharsWritten < 0 )
{
fclose( pFile );
return false;
}
// All at once.
if( image.packed() )
{
fwrite( image.rowPointer( 0 ), sizeof( Vector4f ), image.numElements(), pFile );
}
// Row by Row.
else if( image.elementsArePacked() )
{
for( int y = 0; y < h; ++y )
{
fwrite( image.rowPointer( y ), sizeof( Vector4f ), image.width(), pFile );
}
}
// Element by element.
else
{
for( int y = 0; y < h; ++y )
{
for( int x = 0; x < w; ++x )
{
fwrite( image.elementPointer( { x, y } ), sizeof( Vector4f ), 1, pFile );
}
}
}
fclose( pFile );
return true;
}
bool GLTextureRectangle::set( Array2DReadView< uint8x2 > srcData,
GLImageFormat srcFormat,
const Vector2i& dstOffset )
{
if( srcFormat != GLImageFormat::RG )
{
return false;
}
if( !srcData.packed() )
{
return false;
}
const GLPixelType srcType = GLPixelType::UNSIGNED_BYTE;
return set2D( srcData.pointer(), srcData.size(), srcFormat, srcType,
dstOffset );
}
bool GLTextureRectangle::set( Array2DReadView< Vector4f > srcData,
GLImageFormat srcFormat,
const Vector2i& dstOffset )
{
if( srcFormat != GLImageFormat::RGBA && srcFormat != GLImageFormat::BGRA )
{
return false;
}
if( !srcData.packed() )
{
return false;
}
const GLPixelType srcType = GLPixelType::FLOAT;
return set2D( srcData.pointer(), srcData.size(), srcFormat, srcType,
dstOffset );
}
// static
bool PNGIO::write( const std::string& filename,
Array2DReadView< uint8x4 > image )
{
Array2D< uint8x4 > tmpImage;
const uint8_t* srcPointer;
if( !image.packed() )
{
tmpImage.resize( image.size() );
copy< uint8x4 >( image, tmpImage );
srcPointer = reinterpret_cast< const uint8_t* >( tmpImage.pointer() );
}
else
{
srcPointer = reinterpret_cast< const uint8_t* >( image.pointer() );
}
unsigned int errVal = lodepng::encode(
filename, srcPointer, image.width(), image.height(), LCT_RGBA );
bool succeeded = ( errVal == 0 );
return succeeded;
}
