DeltaVR3DModelGeneration/Assets/_PROJECT/Scripts/ModeGeneration/ShapeDetection/ShapeScannerRay.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class ShapeScannerRay : MonoBehaviour
{
    public Material _activeMaterial;
    public Material _passiveMaterial;
    public string scannableTag = "ShapeScannable";

    private ShapeScanner _scanner;
    private MeshRenderer[] meshRenderers;
    private HashSet<GameObject> collidingObjects;
    private bool _collisionRequired;
    
    void Awake()
    {
        meshRenderers = GetComponentsInChildren<MeshRenderer>();
        collidingObjects = new HashSet<GameObject>();
    }

    // Update is called once per frame
    void Update()
    {
        
    }

    public void Initialize(ShapeScanner scanner, bool collisionRequired, Material activeMaterial, Material passiveMaterial)
    {
        _scanner = scanner;
        _collisionRequired = collisionRequired;
        _activeMaterial = activeMaterial;
        _passiveMaterial = passiveMaterial;
        foreach (MeshRenderer meshRenderer in meshRenderers)
        {
            meshRenderer.material = _passiveMaterial;
        }
        
    }

    private void OnTriggerEnter(Collider other)
    {
        if (other.gameObject.tag == scannableTag)
        {
            collidingObjects.Add(other.gameObject);
            // Only activate when this was the first object that entered collision
            if (collidingObjects.Count  == 1)
            {
                foreach (MeshRenderer meshRenderer in meshRenderers)
                {
                    meshRenderer.material = _activeMaterial;
                }
                if (_collisionRequired)
                {
                    _scanner.IncrementCorrectRayCount();
                }
                else
                {
                    _scanner.DecrementCorrectRayCount();
                }
            }
        }
    }

    private void OnTriggerExit(Collider other)
    {
        if (other.gameObject.tag == "ShapeScannable")
        {
            collidingObjects.Remove(other.gameObject);
            if (collidingObjects.Count == 0)
            {
                foreach (MeshRenderer meshRenderer in meshRenderers)
                {
                    meshRenderer.material = _passiveMaterial;
                }
                if (_collisionRequired)
                {
                    _scanner.DecrementCorrectRayCount();
                }
                else
                {
                    _scanner.IncrementCorrectRayCount();
                }
            }
        }
    }

    public HashSet<GameObject> GetCollidingObjects()
    {
        return collidingObjects;
    }
}