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// 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( "Billboard", "Miscellaneous", "Calculates new Vertex positions and normals to achieve a billboard effect." )]
public sealed class BillboardNode : ParentNode
{
private const string ErrorMessage = "Billboard node should only be connected to vertex ports.";
private const string WarningMessage = "This node is a bit different from all others as it injects the necessary code into the vertex body and writes directly on the vertex position and normal.\nIt outputs a value of 0 so it can be connected directly to a vertex port.\n[Only if that port is a relative vertex offset].";
[SerializeField]
private BillboardType m_billboardType = BillboardType.Cylindrical;
[SerializeField]
private bool m_rotationIndependent = false;
private UpperLeftWidgetHelper m_upperLeftWidget = new UpperLeftWidgetHelper();
protected override void CommonInit( int uniqueId )
{
base.CommonInit( uniqueId );
AddOutputPort( WirePortDataType.FLOAT3, "Out" );
m_textLabelWidth = 115;
m_hasLeftDropdown = true;
SetAdditonalTitleText( string.Format( Constants.SubTitleTypeFormatStr, m_billboardType ) );
}
public override void Destroy()
{
base.Destroy();
m_upperLeftWidget = null;
}
public override void AfterCommonInit()
{
base.AfterCommonInit();
if( PaddingTitleLeft == 0 )
{
PaddingTitleLeft = Constants.PropertyPickerWidth + Constants.IconsLeftRightMargin;
if( PaddingTitleRight == 0 )
PaddingTitleRight = Constants.PropertyPickerWidth + Constants.IconsLeftRightMargin;
}
}
public override void Draw( DrawInfo drawInfo )
{
base.Draw( drawInfo );
m_upperLeftWidget.DrawWidget<BillboardType>( ref m_billboardType, this, OnWidgetUpdate );
}
private readonly Action<ParentNode> OnWidgetUpdate = ( x ) =>
{
x.SetAdditonalTitleText( string.Format( Constants.SubTitleTypeFormatStr, ( x as BillboardNode ).Type ) );
};
public override void DrawProperties()
{
base.DrawProperties();
NodeUtils.DrawPropertyGroup( ref m_propertiesFoldout, Constants.ParameterLabelStr, () =>
{
EditorGUI.BeginChangeCheck();
m_billboardType = (BillboardType)EditorGUILayoutEnumPopup( BillboardOpHelper.BillboardTypeStr, m_billboardType );
if( EditorGUI.EndChangeCheck() )
{
SetAdditonalTitleText( string.Format( Constants.SubTitleTypeFormatStr, m_billboardType ) );
}
m_rotationIndependent = EditorGUILayoutToggle( BillboardOpHelper.BillboardRotIndStr, m_rotationIndependent );
} );
EditorGUILayout.HelpBox( WarningMessage, MessageType.Warning );
}
public override string GenerateShaderForOutput( int outputId, ref MasterNodeDataCollector dataCollector, bool ignoreLocalvar )
{
if( dataCollector.IsFragmentCategory )
{
UIUtils.ShowMessage( UniqueId, ErrorMessage,MessageSeverity.Error );
return m_outputPorts[0].ErrorValue;
}
if( m_outputPorts[ 0 ].IsLocalValue( dataCollector.PortCategory ) )
return m_outputPorts[ 0 ].ErrorValue;
m_outputPorts[ 0 ].SetLocalValue( "0", dataCollector.PortCategory );
string vertexPosValue = dataCollector.IsTemplate ? dataCollector.TemplateDataCollectorInstance.GetVertexPosition( WirePortDataType.OBJECT, CurrentPrecisionType ) : "v.vertex";
string vertexNormalValue = dataCollector.IsTemplate ? dataCollector.TemplateDataCollectorInstance.GetVertexNormal( CurrentPrecisionType ) : "v.normal";
bool vertexIsFloat3 = false;
if( dataCollector.IsTemplate )
{
InterpDataHelper info = dataCollector.TemplateDataCollectorInstance.GetInfo( TemplateInfoOnSematics.POSITION );
if( info != null )
{
vertexIsFloat3 = info.VarType == WirePortDataType.FLOAT3;
}
}
BillboardOpHelper.FillDataCollector( ref dataCollector, m_billboardType, m_rotationIndependent, vertexPosValue, vertexNormalValue, vertexIsFloat3 );
return "0";
}
public override void ReadFromString( ref string[] nodeParams )
{
base.ReadFromString( ref nodeParams );
m_billboardType = (BillboardType)Enum.Parse( typeof( BillboardType ), GetCurrentParam( ref nodeParams ) );
m_rotationIndependent = Convert.ToBoolean( GetCurrentParam( ref nodeParams ) );
}
public override void WriteToString( ref string nodeInfo, ref string connectionsInfo )
{
base.WriteToString( ref nodeInfo, ref connectionsInfo );
IOUtils.AddFieldValueToString( ref nodeInfo, m_billboardType );
IOUtils.AddFieldValueToString( ref nodeInfo, m_rotationIndependent );
SetAdditonalTitleText( string.Format( Constants.SubTitleTypeFormatStr, m_billboardType ) );
}
public BillboardType Type { get { return m_billboardType; } }
}
}
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