Canvas3D.cs

using SkiaSharp;
using System;
using Waher.Script.Abstraction.Elements;
using Waher.Script.Exceptions;
using Waher.Script.Model;
 
namespace Waher.Script.Graphs3D.Functions
{
    public class Canvas3D : FunctionMultiVariate
    {
        public Canvas3D(ScriptNode Width, ScriptNode Height, ScriptNode Oversampling,
            ScriptNode BackgroupColor, int Start, int Length, Expression Expression)
            : base(new ScriptNode[] { Width, Height, Oversampling, BackgroupColor },
                  argumentTypes4Scalar, Start, Length, Expression)
        {
        }
 
        public override string FunctionName => nameof(Canvas3D);
 
        public override string[] DefaultArgumentNames => new string[]
        {
            "Width",
            "Height",
            "Oversampling",
            "BackgroundColor"
        };
 
        public override IElement Evaluate(IElement[] Arguments, Variables Variables)
        {
            int Width = (int)Expression.ToDouble(Arguments[0].AssociatedObjectValue);
            int Height = (int)Expression.ToDouble(Arguments[1].AssociatedObjectValue);
            int Oversampling = (int)Expression.ToDouble(Arguments[2].AssociatedObjectValue);
            SKColor BackgroundColor = Graphs.Graph.ToColor(Arguments[3].AssociatedObjectValue);
 
            if (Width <= 0)
                throw new ScriptRuntimeException("Invalid width.", this);
 
            if (Height <= 0)
                throw new ScriptRuntimeException("Invalid height.", this);
 
            if (Oversampling <= 0)
                throw new ScriptRuntimeException("Invalid oversampling.", this);
 
            return new Graphs3D.Canvas3D(Variables, Width, Height, Oversampling, BackgroundColor);
        }
    }
}