using UnityEngine;

[ExecuteInEditMode]
public class ProjectorMatrix : MonoBehaviour
{
	public string[] GlobalMatrixNames;

	public Transform[] ProjectiveTranforms;

	public bool UpdateOnStart;

	public bool CanUpdate = true;

	private Transform t;

	private void Start()
	{
		t = base.transform;
		if (UpdateOnStart)
		{
			UpdateMatrix();
		}
	}

	private void Update()
	{
		if (!UpdateOnStart)
		{
			UpdateMatrix();
		}
	}

	public void UpdateMatrix()
	{
		if (CanUpdate && GlobalMatrixNames != null && ProjectiveTranforms != null && GlobalMatrixNames.Length != 0 && ProjectiveTranforms.Length != 0)
		{
			for (int i = 0; i < GlobalMatrixNames.Length; i++)
			{
				Shader.SetGlobalMatrix(GlobalMatrixNames[i], ProjectiveTranforms[i].worldToLocalMatrix * t.localToWorldMatrix);
			}
		}
	}
}