CesiumFeatureIdSet.cs

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using System;
using System.Collections.Generic;
using UnityEngine;
 
namespace CesiumForUnity
{
    public enum CesiumFeatureIdSetType
    {
        None,
        Attribute,
        Texture,
        Implicit
    }
 
    public class CesiumFeatureIdSet : IDisposable
    {
        #region Getters
 
        public CesiumFeatureIdSetType type
        {
            get; protected set;
        }
 
        public String label
        {
            get; internal set;
        }
 
        public Int64 featureCount
        {
            get; internal set;
        }
 
        public Int64 nullFeatureId
        {
            get; internal set;
        }
 
        public Int64 propertyTableIndex
        {
            get; internal set;
        }
 
        #endregion
 
        #region Constructors
 
        internal CesiumFeatureIdSet() : this(0)
        { }
 
        internal CesiumFeatureIdSet(Int64 featureCount)
        {
            this.type = featureCount > 0 ? CesiumFeatureIdSetType.Implicit : CesiumFeatureIdSetType.None;
            this.featureCount = featureCount;
            this.label = "";
            this.nullFeatureId = -1;
            this.propertyTableIndex = -1;
        }
 
        #endregion
 
        #region Public methods
        public virtual Int64 GetFeatureIdForVertex(Int64 vertexIndex)
        {
            if (this.type != CesiumFeatureIdSetType.Implicit)
            {
                // Other methods should be handled by CesiumFeatureIdAttribute and
                // CesiumFeatureIdTexture respectively.
                return -1;
            }
 
            if (vertexIndex < 0 || vertexIndex >= this.featureCount)
            {
                return -1;
            }
 
            return vertexIndex;
        }
 
        public virtual Int64 GetFeatureIdFromRaycastHit(RaycastHit hitInfo)
        {
            if (this.type != CesiumFeatureIdSetType.Implicit)
            {
                // Other methods should be handled by CesiumFeatureIdAttribute and
                // CesiumFeatureIdTexture respectively.
                return -1;
            }
 
 
            return CesiumPrimitiveFeatures.GetFirstVertexFromHitTriangle(hitInfo);
        }
 
        #endregion
 
        // Cache the list of indices to prevent the allocation of a new array every time
        // GetFirstVertexFromHitTriangle is called.
        List<int> _indices;
 
        public virtual void Dispose() { }
    }
}