ReFuel.Gltf/ReFuel.Gltf/GltfSampler.cs

using System;
using System.Text.Json;

namespace ReFuel.Gltf
{
    internal enum GltfSamplerValue : int
    {
        Nearest = 9728,
        Linear = 9729,
        NearestMipmapNearest = 9984,
        LinearMipmapNearest = 9985,
        NearestMipmapLinear = 9986,
        LinearMipmapLinear = 9987,
        ClampToEdge = 33071,
        MirroredRepeat = 33648,
        Repeat = 10497,
    }

    public enum GltfSamplerMagFilter
    {
        Unset = 0,
        Nearest = GltfSamplerValue.Nearest,
        Linear = GltfSamplerValue.Linear
    }

    public enum GltfSamplerMinFilter
    {
        Unset = 0,
        Nearest = GltfSamplerValue.Nearest,
        Linear = GltfSamplerValue.Linear,
        NearestMipmapNearest = GltfSamplerValue.NearestMipmapNearest,
        LinearMipmapNearest = GltfSamplerValue.LinearMipmapNearest,
        NearestMipmapLinear = GltfSamplerValue.NearestMipmapLinear,
        LinearMipmapLinear = GltfSamplerValue.LinearMipmapLinear,
    }

    public enum GltfSamplerWrapMode
    {
        ClampToEdge = GltfSamplerValue.ClampToEdge,
        MirroredRepeat = GltfSamplerValue.MirroredRepeat,
        Repeat = GltfSamplerValue.Repeat,
    }

    public class GltfSampler : GltfIdObject
    {
        public override GltfObjectKind Kind => GltfObjectKind.Sampler;

        public string? Name { get; set; } = null;
        public GltfSamplerMinFilter MinFilter { get; set; } = GltfSamplerMinFilter.Unset;
        public GltfSamplerMagFilter MagFilter { get; set; } = GltfSamplerMagFilter.Unset;
        public GltfSamplerWrapMode WrapS { get; set; } =  GltfSamplerWrapMode.Repeat;
        public GltfSamplerWrapMode WrapT { get; set; } =  GltfSamplerWrapMode.Repeat;

        internal GltfSampler(GltfDocument document) : base(document)
        {
        }

        internal override void Deserialize(JsonElement element)
        {
            if (element.ValueKind != JsonValueKind.Object)
                throw new Exception("Expected an object as a sampler.");
            
            foreach (JsonProperty property in element.EnumerateObject())
            {
                switch (property.Name)
                {
                    case "name":
                        Name = property.Value.GetString();
                        break;
                    case "magFilter":
                        MagFilter = (GltfSamplerMagFilter)property.Value.GetInt32();
                        break;
                    case "minFilter":
                        MinFilter = (GltfSamplerMinFilter)property.Value.GetInt32();
                        break;
                    case "wrapS":
                        WrapS = (GltfSamplerWrapMode)property.Value.GetInt32();
                        break;
                    case "wrapT":
                        WrapT = (GltfSamplerWrapMode)property.Value.GetInt32();
                        break;
                }
            }

            DeserializeCommon(element);
        }

        internal override void Serialize(Utf8JsonWriter writer)
        {
            throw new NotImplementedException();
        }
    }
}