/// <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)
{
Graphs3D.PhongIntensity Diffuse = Graphs3D.Canvas3D.ToPhongIntensity(Arguments[0].AssociatedObjectValue);
Graphs3D.PhongIntensity Specular = Graphs3D.Canvas3D.ToPhongIntensity(Arguments[1].AssociatedObjectValue);
Vector3 Position = Graphs3D.Canvas3D.ToVector3(Arguments[2].AssociatedObjectValue);
return(new ObjectValue(new Graphs3D.PhongLightSource(Diffuse, Specular, Position)));
}
/// <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)
{
Graphs3D.PhongIntensity Ambient = Graphs3D.Canvas3D.ToPhongIntensity(Arguments[1].AssociatedObjectValue);
Graphs3D.PhongLightSource[] LightSources;
object Obj;
if (!(Arguments[0].AssociatedObjectValue is Graphs3D.PhongMaterial Material))
{
throw new ScriptRuntimeException("Phong material expected in first argument.", this);
}
Obj = Arguments[2].AssociatedObjectValue;
if (Obj is Graphs3D.PhongLightSource Source)
{
LightSources = new Graphs3D.PhongLightSource[] { Source }
}
;
else if (Obj is IVector V)
{
List <Graphs3D.PhongLightSource> Sources = new List <Graphs3D.PhongLightSource>();
foreach (IElement E in V.VectorElements)
{
if (E.AssociatedObjectValue is Graphs3D.PhongLightSource Source2)
{
Sources.Add(Source2);
}
else
{
throw new ScriptRuntimeException("Expected one or more light sources for the third argument.", this);
}
}
LightSources = Sources.ToArray();
}
else
{
throw new ScriptRuntimeException("Expected one or more light sources for the third argument.", this);
}
return(new ObjectValue(new Graphs3D.PhongShader(Material, Ambient, LightSources)));
}
