private void WriteOffset(int offsetX, int offsetY, UnsafeMemoryBuffer ms)
{
ms.Write(offset, 7);
var xNum = numbers[offsetX];
ms.WriteNullTerminated(xNum);
ms.WriteByte(space);
var yNum = numbers[offsetY];
ms.WriteNullTerminated(yNum);
ms.WriteByte(newline);
}
private void RenderPixels(OutputPixel[] pixels, int offsetX, int offsetY, bool omitOffset, bool greyscaleSupported, UnsafeMemoryBuffer ms)
{
var canvasWidth = _canvasSize.Width;
var canvasHeight = _canvasSize.Height;
var len = pixels.Length;
for (int i = 0; i < len; i++)
{
var pixel = pixels[i];
var argbColor = pixel.Color;
var a = (byte)(argbColor >> 24 & 0xFF);
if (a == 0)
{
continue;
}
int pixelX;
int pixelY;
if (omitOffset)
{
pixelX = pixel.X;
pixelY = pixel.Y;
}
else
{
pixelX = pixel.X + offsetX;
pixelY = pixel.Y + offsetY;
}
if (pixelX >= canvasWidth || pixelY >= canvasHeight)
{
continue;
}
ms.Write(px, 3);
var xNum = numbers[pixelX];
ms.WriteNullTerminated(xNum);
ms.WriteByte(space);
var yNum = numbers[pixelY];
ms.WriteNullTerminated(yNum);
ms.WriteByte(space);
if (greyscaleSupported && IsGreyScale(argbColor, out var grey) && a == 0xFF)
{
ms.Write(hexNumbers + (grey << 1), 2);
}
else
{
ms.Write(hexColors + (argbColor & 0x00FFFFFF) * 6, 6);
if (a != 0xFF)
{
ms.Write(hexNumbers + (a << 1), 2);
}
}
ms.WriteByte(newline);
}
}
