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// Amplify Shader Editor - Visual Shader Editing Tool
// Copyright (c) Amplify Creations, Lda <info@amplify.pt>
using System;
using UnityEditor;
using UnityEngine;
namespace AmplifyShaderEditor
{
[Serializable]
[NodeAttributes( "Vertex Tangent", "Vertex Data", "Vertex tangent vector in object space, can be used in both local vertex offset and fragment outputs" )]
public sealed class TangentVertexDataNode : VertexDataNode
{
private const string PropertyLabel = "Size";
private readonly string[] SizeLabels = { "XYZ", "XYZW" };
[SerializeField]
private int m_sizeOption = 0;
private UpperLeftWidgetHelper m_upperLeftWidget = new UpperLeftWidgetHelper();
protected override void CommonInit( int uniqueId )
{
base.CommonInit( uniqueId );
m_currentVertexData = "tangent";
ChangeOutputProperties( 0, "XYZ", WirePortDataType.FLOAT3 );
m_outputPorts[ 4 ].Visible = false;
m_drawPreviewAsSphere = true;
m_hasLeftDropdown = true;
m_previewShaderGUID = "0a44bb521d06d6143a4acbc3602037f8";
}
public override void Destroy()
{
base.Destroy();
m_upperLeftWidget = null;
}
public override void Draw( DrawInfo drawInfo )
{
base.Draw( drawInfo );
EditorGUI.BeginChangeCheck();
m_sizeOption = m_upperLeftWidget.DrawWidget( this, m_sizeOption, SizeLabels );
if( EditorGUI.EndChangeCheck() )
{
UpdatePorts();
}
}
public override void DrawProperties()
{
EditorGUI.BeginChangeCheck();
m_sizeOption = EditorGUILayoutPopup( PropertyLabel, m_sizeOption, SizeLabels );
if( EditorGUI.EndChangeCheck() )
{
UpdatePorts();
}
}
void UpdatePorts()
{
if( m_sizeOption == 0 )
{
ChangeOutputProperties( 0, SizeLabels[ 0 ], WirePortDataType.FLOAT3, false );
m_outputPorts[ 4 ].Visible = false;
}
else
{
ChangeOutputProperties( 0, SizeLabels[ 1 ], WirePortDataType.FLOAT4, false );
m_outputPorts[ 4 ].Visible = true;
}
}
public override void PropagateNodeData( NodeData nodeData, ref MasterNodeDataCollector dataCollector )
{
base.PropagateNodeData( nodeData, ref dataCollector );
dataCollector.DirtyNormal = true;
}
public override string GenerateShaderForOutput( int outputId, ref MasterNodeDataCollector dataCollector, bool ignoreLocalVar )
{
string vertexTangent = string.Empty;
if ( dataCollector.MasterNodeCategory == AvailableShaderTypes.Template )
{
vertexTangent = dataCollector.TemplateDataCollectorInstance.GetVertexTangent( WirePortDataType.FLOAT4, CurrentPrecisionType );
if( m_sizeOption == 0 )
vertexTangent += ".xyz";
return GetOutputVectorItem( 0, outputId, vertexTangent );
}
if ( dataCollector.PortCategory == MasterNodePortCategory.Fragment || dataCollector.PortCategory == MasterNodePortCategory.Debug )
{
dataCollector.ForceNormal = true;
dataCollector.AddToInput( UniqueId, SurfaceInputs.WORLD_NORMAL, CurrentPrecisionType );
dataCollector.AddToInput( UniqueId, SurfaceInputs.INTERNALDATA, addSemiColon: false );
}
WirePortDataType sizeType = m_sizeOption == 0 ? WirePortDataType.FLOAT3 : WirePortDataType.FLOAT4;
vertexTangent = GeneratorUtils.GenerateVertexTangent( ref dataCollector, UniqueId, CurrentPrecisionType, sizeType );
return GetOutputVectorItem( 0, outputId, vertexTangent );
}
public override void ReadFromString( ref string[] nodeParams )
{
base.ReadFromString( ref nodeParams );
if( UIUtils.CurrentShaderVersion() > 16100 )
{
m_sizeOption = Convert.ToInt32( GetCurrentParam( ref nodeParams ) );
UpdatePorts();
}
}
public override void WriteToString( ref string nodeInfo, ref string connectionsInfo )
{
base.WriteToString( ref nodeInfo, ref connectionsInfo );
IOUtils.AddFieldValueToString( ref nodeInfo, m_sizeOption );
}
}
}
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