/// <summary>
/// Evaluates the function.
/// </summary>
/// <param name="Arguments">Function arguments.</param>
/// <param name="Variables">Variables collection.</param>
/// <returns>Function result.</returns>
public override IElement Evaluate(IElement[] Arguments, Variables Variables)
{
object x1 = Arguments[0].AssociatedObjectValue;
object x2 = Arguments[1].AssociatedObjectValue;
double p = Expression.ToDouble(Arguments[2].AssociatedObjectValue);
SKImage Img1, Img2;
SKColor c1, c2;
if (x1 is SKColor C1)
{
c1 = C1;
Img1 = null;
}
else if (x1 is Graph G1)
{
Img1 = G1.CreateBitmap(Variables);
c1 = SKColor.Empty;
}
else if (x1 is SKImage I1)
{
Img1 = I1;
c1 = SKColor.Empty;
}
else
{
Img1 = null;
c1 = Graph.ToColor(x1);
}
if (x2 is SKColor C2)
{
c2 = C2;
Img2 = null;
}
else if (x2 is Graph G2)
{
Img2 = G2.CreateBitmap(Variables);
c2 = SKColor.Empty;
}
else if (x2 is SKImage I2)
{
Img2 = I2;
c2 = SKColor.Empty;
}
else
{
Img2 = null;
c2 = Graph.ToColor(x2);
}
if (Img1 is null && Img2 is null)
{
return(new ObjectValue(BlendColors(c1, c2, p)));
}