/// <summary>
/// Turns the lines into a BlockLine
/// </summary>
private unsafe void BuildBlockLine(byte *[] lines, int index, int bpp)
{
BlockLine blockLine = _newImageLines[index];
// Advance one block width at a time
int step = _elementWidth * bpp;
for (int i = 0; i < blockLine.Count; i++)
{
int offset = i * step;
BuildBlock(lines, blockLine.GetBlock(i), offset, step, bpp);
}
}
/// <summary>
/// Turns the lines into a BlockLine
/// </summary>
private unsafe BlockLine GetBlockLine(byte *[] lines, LockBitsData data)
{
BlockLine blockLine = new BlockLine(_pData.Columns, LineFillMode.Default);
// Advance one block width at a time
int step = _elementWidth * data.BytesPerPixel;
for (int offset = 0; offset < data.WidthInBytes; offset += step)
{
blockLine.Add(GetPixels(lines, offset, step, data.BytesPerPixel));
}
return(blockLine);
}
/// <summary>
/// Generates the errors for the given BlockLine
/// </summary>
private void GenerateErrors(int y, BlockLine blockLine)
{
for (int x = 0; x < blockLine.Count; x++)
{
List <int> errors = new List <int>(_elementBlocks.Count);
ColorBlock img = blockLine.GetBlock(x);
// Compare the ColorBlock with every mosaic element
for (int i = 0; i < _elementBlocks.Count; i++)
{
ColorBlock element = _elementBlocks[i];
errors.Add(Metrics.SquaredError(img, element));
}
// Set the best fitting block in the list
int index = errors.FindIndexOfSmallestElement();
NewImageLines[y].SetBlock(_elementBlocks[index], x);
}
}