using UnityEngine;

namespace UnityEditor.Graphs.Material
{
	[Title("Input/Normal Node")]
	public class NormalNode : BaseMaterialNode
	{
		private const string kOutputSlotName = "Normal";

		public override bool hasPreview { get { return true; } }
		public override PreviewMode previewMode
		{
			get { return PreviewMode.Preview3D; } }

		public override void Init ()
		{
			base.Init ();
			name = "Normal";
			AddSlot (new Slot (SlotType.OutputSlot, kOutputSlotName));
		}

		public override string GetOutputVariableNameForSlot(Slot slot, GenerationMode generationMode)
		{
			if (generationMode == GenerationMode.Preview2D)
				Debug.LogError ("Trying to generate 2D preview on a node that does not support it!");

			return generationMode.Is2DPreview () ? "half4 (IN.Normal, 1)" : "half4 (o.Normal, 1)";
		}
	}
}