private static void ShowImage <TPixel>(this Ht1632 ht1632, Image <TPixel> image, int com, int row, BrightnessConvertor brightnessConvertor)
where TPixel : unmanaged, IPixel <TPixel>
{
if (image.Width < com || image.Height < row)
{
throw new Exception($"Image is too small. Width: {image.Width}/{com}, height: {image.Height}/{row}.");
}
var data = new byte[row * com / 4];
for (var y = 0; y < row; y++)
{
for (var x = 0; x < com; x += 4)
{
var value = (byte)(
(brightnessConvertor(image[x + 0, y]) ? 0b_1000 : 0) |
(brightnessConvertor(image[x + 1, y]) ? 0b_0100 : 0) |
(brightnessConvertor(image[x + 2, y]) ? 0b_0010 : 0) |
(brightnessConvertor(image[x + 3, y]) ? 0b_0001 : 0));
var index = (x + com * y) / 4;
data[index] = value;
}
}
ht1632.WriteData(0, data);
}
/// <summary>
/// Show image with 16-Com mode
/// </summary>
/// <param name="ht1632">HT1632 device</param>
/// <param name="image">Image to show. Width at least 16 pixels, height at least 24 pixels </param>
/// <param name="brightnessConvertor">Method for whether pixel is lit or not. Use <see cref="LinearBrightnessConvertor"/> if null.</param>
public static void ShowImageWith16Com <TPixel>(this Ht1632 ht1632, Image <TPixel> image, BrightnessConvertor?brightnessConvertor = null)
where TPixel : unmanaged, IPixel <TPixel> => ht1632.ShowImage(image, 16, 24, brightnessConvertor ?? LinearBrightnessConvertor);
