// Return true if this column is all white.
private static bool ColumnIsWhite(Bitmap32 bm32, int x)
{
byte r, g, b, a;
int count = 0;
for (int y = 0; y < bm32.Height; y++)
{
bm32.GetPixel(x, y, out r, out g, out b, out a);
if (((r < 250) || (g < 250) || (b < 250)) && ((r > 2) || (g > 2) || (b > 2)))
{
count++;
}
if (count > bm32.Height / 10)
{
return(false);
}
}
return(true);
}
// Return true if this row is all white.
private static bool RowIsWhite(Bitmap32 bm32, int y)
{
byte r, g, b, a;
int count = 0;
for (int x = 0; x < bm32.Width; x++)
{
bm32.GetPixel(x, y, out r, out g, out b, out a);
if (((r < 250) || (g < 250) || (b < 250)) && ((r > 2) || (g > 2) || (b > 2)))
{
count++;
}
if (count > bm32.Width / 10)
{
return(false);
}
}
return(true);
}