OneFloatParameter.cs

using System;
using SkiaSharp;
using System.Xml;
using System.Threading.Tasks;
 
namespace Waher.Script.Graphs.Canvas2D.Operations
{
    public abstract class OneFloatParameter : CanvasOperation
    {
        private float parameter;
 
        public OneFloatParameter()
        {
        }
 
        public OneFloatParameter(float Parameter)
        {
            this.parameter = Parameter;
        }
 
        public float Parameter => this.parameter;
 
        public override bool Equals(object obj)
        {
            return (obj is OneFloatParameter Obj &&
                this.parameter == Obj.parameter);
        }
 
        public override int GetHashCode()
        {
            return this.parameter.GetHashCode();
        }
 
        public override void ExportGraph(XmlWriter Output)
        {
            Output.WriteAttributeString("p", Expression.ToString(this.parameter));
        }
 
        public override Task ImportGraph(XmlElement Xml, Variables _)
        {
            foreach (XmlAttribute Attr in Xml.Attributes)
            {
                switch (Attr.Name)
                {
                    case "p":
                        if (Expression.TryParse(Attr.Value, out float Value))
                            this.parameter = Value;
                        break;
                }
            }
 
            return Task.CompletedTask;
        }
    }
}