public static double[,] Divide(double[,] matrix, double scalar)
{
if (scalar.AboutEqual(0, 1.0e-10))
{
throw new Exception();
}
for (int i = 0; i < matrix.RowCount(); i++)
{
for (int j = 0; j < matrix.ColumnCount(); j++)
{
matrix[i, j] /= scalar;
}
}
return(matrix);
}
public static (double, double, double) RgbToHsv(double r, double g, double b)
{
double delta, min;
double h = 0.0, s, v;
min = Math.Min(Math.Min(r, g), b);
v = Math.Max(Math.Max(r, g), b);
delta = v - min;
if (v <= 0.12)
{
// reduce saturation for low value colors
s = ColorMath.LinearInterpolation(v, 0.005, 0.12, 0, delta / v);
}
else
{
s = delta / v;
}
if (s <= 0.001)
{
h = 0.0;
}
else
{
if (r.AboutEqual(v))
{
h = (g - b) / delta;
}
else if (g.AboutEqual(v))
{
h = 2.0 + (b - r) / delta;
}
else if (b.AboutEqual(v))
{
h = 4.0 + (r - g) / delta;
}
h *= 60.0;
if (h < 0.0)
{
h = h + 360.0;
}
}
return(h, s, v);
}
public bool Equals(AngleInterval shadow)
{
return(_from.AboutEqual(shadow._from) && _to.AboutEqual(shadow._to) && _full == shadow._full);
}