private void CopyToXyzw(PixelArea <TPixel> area, int sourceX, int sourceY, int width, int height)
{
for (int y = 0; y < height; y++)
{
Span <TPixel> source = this.GetRowSpan(sourceX, sourceY + y);
Span <byte> destination = area.GetRowSpan(y);
Operations.ToRgba32Bytes(source, destination, width);
}
}
private void CopyFromXyzw(PixelArea <TPixel> area, int targetX, int targetY, int width, int height)
{
for (int y = 0; y < height; y++)
{
Span <byte> source = area.GetRowSpan(y);
Span <TPixel> destination = this.GetRowSpan(targetX, targetY + y);
Operations.PackFromRgba32Bytes(source, destination, width);
}
}
private void CheckCoordinates(PixelArea <TPixel> area, int x, int y)
{
int width = Math.Min(area.Width, this.Width - x);
if (width < 1)
{
throw new ArgumentOutOfRangeException(nameof(width), width, "Invalid area size specified.");
}
int height = Math.Min(area.Height, this.Height - y);
if (height < 1)
{
throw new ArgumentOutOfRangeException(nameof(height), height, "Invalid area size specified.");
}
}
/// <summary>
/// Copy pixels from the image to an area of pixels. This method will make sure that the pixels
/// that are copied are within the bounds of the image.
/// </summary>
/// <param name="area">The area.</param>
/// <param name="sourceY">The source row index.</param>
/// <param name="sourceX">The source column index.</param>
/// <exception cref="NotSupportedException">
/// Thrown when an unsupported component order value is passed.
/// </exception>
internal void SafeCopyTo(PixelArea <TPixel> area, int sourceY, int sourceX = 0)
{
int width = Math.Min(area.Width, this.Width - sourceX);
if (width < 1)
{
return;
}
int height = Math.Min(area.Height, this.Height - sourceY);
if (height < 1)
{
return;
}
this.CopyTo(area, sourceX, sourceY, width, height);
}
/// <summary>
/// Copy pixels from the image to an area of pixels.
/// </summary>
/// <param name="area">The area.</param>
/// <param name="sourceX">The source column index.</param>
/// <param name="sourceY">The source row index.</param>
/// <param name="width">The width of the area to copy.</param>
/// <param name="height">The height of the area to copy.</param>
/// <exception cref="NotSupportedException">
/// Thrown when an unsupported component order value is passed.
/// </exception>
private void CopyTo(PixelArea <TPixel> area, int sourceX, int sourceY, int width, int height)
{
switch (area.ComponentOrder)
{
case ComponentOrder.Zyx:
this.CopyToZyx(area, sourceX, sourceY, width, height);
break;
case ComponentOrder.Zyxw:
this.CopyToZyxw(area, sourceX, sourceY, width, height);
break;
case ComponentOrder.Xyz:
this.CopyToXyz(area, sourceX, sourceY, width, height);
break;
case ComponentOrder.Xyzw:
this.CopyToXyzw(area, sourceX, sourceY, width, height);
break;
default:
throw new NotSupportedException();
}
}
/// <summary>
/// Copy an area of pixels to the image.
/// </summary>
/// <param name="area">The area.</param>
/// <param name="targetX">The target column index.</param>
/// <param name="targetY">The target row index.</param>
/// <param name="width">The width of the area to copy.</param>
/// <param name="height">The height of the area to copy.</param>
/// <exception cref="NotSupportedException">
/// Thrown when an unsupported component order value is passed.
/// </exception>
private void CopyFrom(PixelArea <TPixel> area, int targetX, int targetY, int width, int height)
{
switch (area.ComponentOrder)
{
case ComponentOrder.Zyx:
this.CopyFromZyx(area, targetX, targetY, width, height);
break;
case ComponentOrder.Zyxw:
this.CopyFromZyxw(area, targetX, targetY, width, height);
break;
case ComponentOrder.Xyz:
this.CopyFromXyz(area, targetX, targetY, width, height);
break;
case ComponentOrder.Xyzw:
this.CopyFromXyzw(area, targetX, targetY, width, height);
break;
default:
throw new NotSupportedException();
}
}
/// <summary>
/// Copy pixels from the image to an area of pixels.
/// </summary>
/// <param name="area">The area.</param>
/// <param name="sourceY">The source row index.</param>
/// <param name="sourceX">The source column index.</param>
/// <exception cref="NotSupportedException">
/// Thrown when an unsupported component order value is passed.
/// </exception>
internal void CopyTo(PixelArea <TPixel> area, int sourceY, int sourceX = 0)
{
this.CheckCoordinates(area, sourceX, sourceY);
this.CopyTo(area, sourceX, sourceY, area.Width, area.Height);
}
/// <summary>
/// Copy an area of pixels to the image.
/// </summary>
/// <param name="area">The area.</param>
/// <param name="targetY">The target row index.</param>
/// <param name="targetX">The target column index.</param>
/// <exception cref="NotSupportedException">
/// Thrown when an unsupported component order value is passed.
/// </exception>
internal void CopyFrom(PixelArea <TPixel> area, int targetY, int targetX = 0)
{
this.CheckCoordinates(area, targetX, targetY);
this.CopyFrom(area, targetX, targetY, area.Width, area.Height);
}
