// Amplify Shader Editor - Visual Shader Editing Tool
// Copyright (c) Amplify Creations, Lda <info@amplify.pt>

using System;
using UnityEngine;
using UnityEditor;

namespace AmplifyShaderEditor
{
	[Serializable]
	[NodeAttributes( "World Space View Dir", "Object Transform", "World space direction (not normalized) from given object space vertex position towards the camera", castType: null, shortcutKey: KeyCode.None, available: false, deprecated: true )]
	public sealed class WorldSpaceViewDirHlpNode : HelperParentNode
	{
		protected override void CommonInit( int uniqueId )
		{
			base.CommonInit( uniqueId );
			m_funcType = "WorldSpaceViewDir";
			//TODO: revisit this later
			m_funcLWFormatOverride = "( _WorldSpaceCameraPos.xyz - mul(GetObjectToWorldMatrix(), {0} ).xyz )";
			m_funcHDFormatOverride = "( _WorldSpaceCameraPos.xyz - mul(GetObjectToWorldMatrix(), {0} ).xyz )";
			m_inputPorts[ 0 ].ChangeType( WirePortDataType.FLOAT4, false );
			m_inputPorts[ 0 ].Vector4InternalData = new UnityEngine.Vector4( 0, 0, 0, 1 );
			m_outputPorts[ 0 ].ChangeType( WirePortDataType.FLOAT3, false );
			m_outputPorts[ 0 ].Name = "XYZ";
			AddOutputPort( WirePortDataType.FLOAT, "X" );
			AddOutputPort( WirePortDataType.FLOAT, "Y" );
			AddOutputPort( WirePortDataType.FLOAT, "Z" );
			m_previewShaderGUID = "fe0e09756a8a0ba408015b43e66cb8a6";

			m_errorMessageTooltip = "This node still works but is now deprecated. Please use \"View Dir\" instead.";
			m_errorMessageTypeIsError = NodeMessageType.Warning;
			m_showErrorMessage = true;
		}

		protected override void OnUniqueIDAssigned()
		{
			base.OnUniqueIDAssigned();
			m_localVarName = "worldSpaceViewDir" + OutputId;
		}

		public override void DrawProperties()
		{
			base.DrawProperties();
			if ( m_showErrorMessage )
			{
				EditorGUILayout.HelpBox( m_errorMessageTooltip, MessageType.Warning );
			}
		}
	}
}