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116 lines
4.4 KiB
116 lines
4.4 KiB
// Amplify Shader Editor - Visual Shader Editing Tool
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// Copyright (c) Amplify Creations, Lda <info@amplify.pt>
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using UnityEngine;
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using System;
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namespace AmplifyShaderEditor
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{
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[Serializable]
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[NodeAttributes( "Lerp", "Math Operators", "Linear interpolation of two scalars or vectors based on a weight", null, KeyCode.L )]
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public sealed class LerpOp : ParentNode
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{
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private const string LertOpFormat = "lerp( {0} , {1} , {2})";
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[UnityEngine.SerializeField]
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private WirePortDataType m_mainDataType = WirePortDataType.FLOAT;
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protected override void CommonInit( int uniqueId )
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{
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base.CommonInit( uniqueId );
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m_textLabelWidth = 55;
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AddInputPort( WirePortDataType.FLOAT, false, "A" );
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AddInputPort( WirePortDataType.FLOAT, false, "B" );
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AddInputPort( WirePortDataType.FLOAT, false, "Alpha" );
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AddOutputPort( WirePortDataType.FLOAT,Constants.EmptyPortValue);
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m_useInternalPortData = true;
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m_previewShaderGUID = "34d9c4cdcf1fadb49af2de3f90bbc57d";
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}
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public override void OnInputPortConnected( int portId, int otherNodeId, int otherPortId, bool activateNode = true )
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{
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base.OnInputPortConnected( portId, otherNodeId, otherPortId, activateNode );
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UpdateConnection( portId );
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}
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public override void OnConnectedOutputNodeChanges( int inputPortId, int otherNodeId, int otherPortId, string name, WirePortDataType type )
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{
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base.OnConnectedOutputNodeChanges( inputPortId, otherNodeId, otherPortId, name, type );
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UpdateConnection( inputPortId );
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}
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public override void OnInputPortDisconnected( int portId )
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{
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base.OnInputPortDisconnected( portId );
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UpdateConnection( portId );
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}
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void UpdateConnection( int portId )
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{
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WirePortDataType type1 = WirePortDataType.FLOAT;
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if( m_inputPorts[ 0 ].IsConnected )
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type1 = m_inputPorts[ 0 ].GetOutputConnection( 0 ).DataType;
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WirePortDataType type2 = WirePortDataType.FLOAT;
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if( m_inputPorts[ 1 ].IsConnected )
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type2 = m_inputPorts[ 1 ].GetOutputConnection( 0 ).DataType;
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WirePortDataType typealpha = WirePortDataType.FLOAT;
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if( m_inputPorts[ 2 ].IsConnected )
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typealpha = m_inputPorts[ 2 ].GetOutputConnection( 0 ).DataType;
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m_mainDataType = UIUtils.GetPriority( type1 ) > UIUtils.GetPriority( type2 ) ? type1 : type2;
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if( !m_inputPorts[ 0 ].IsConnected && !m_inputPorts[ 1 ].IsConnected && m_inputPorts[ 2 ].IsConnected )
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m_mainDataType = m_inputPorts[ 2 ].GetOutputConnection( 0 ).DataType;
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m_inputPorts[ 0 ].ChangeType( m_mainDataType, false );
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m_inputPorts[ 1 ].ChangeType( m_mainDataType, false );
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if( m_inputPorts[ 2 ].IsConnected && ( typealpha == WirePortDataType.FLOAT || typealpha == WirePortDataType.INT ) )
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m_inputPorts[ 2 ].ChangeType( WirePortDataType.FLOAT, false );
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else
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m_inputPorts[ 2 ].ChangeType( m_mainDataType, false );
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m_outputPorts[ 0 ].ChangeType( m_mainDataType, false );
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}
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//void UpdateDisconnection( int portId )
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//{
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// int otherPortId = ( portId + 1 ) % 2;
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// if ( m_inputPorts[ otherPortId ].IsConnected )
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// {
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// m_mainDataType = m_inputPorts[ otherPortId ].DataType;
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// m_inputPorts[ portId ].ChangeType( m_mainDataType, false );
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// m_outputPorts[ 0 ].ChangeType( m_mainDataType, false );
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// }
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//}
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public override string GenerateShaderForOutput( int outputId, ref MasterNodeDataCollector dataCollector, bool ignoreLocalVar )
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{
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if ( m_outputPorts[ 0 ].IsLocalValue( dataCollector.PortCategory ) )
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return m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory );
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string aValue = m_inputPorts[ 0 ].GenerateShaderForOutput( ref dataCollector, m_mainDataType, ignoreLocalVar, true );
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string bValue = m_inputPorts[ 1 ].GenerateShaderForOutput( ref dataCollector, m_mainDataType, ignoreLocalVar, true );
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string interp = string.Empty;
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if( m_inputPorts[ 2 ].DataType == WirePortDataType.FLOAT )
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interp = m_inputPorts[ 2 ].GeneratePortInstructions( ref dataCollector );
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else
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interp = m_inputPorts[ 2 ].GenerateShaderForOutput( ref dataCollector, m_mainDataType, ignoreLocalVar,true );
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string result = string.Format( LertOpFormat, aValue,bValue,interp);
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RegisterLocalVariable( 0, result, ref dataCollector, "lerpResult"+OutputId );
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return m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory );
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}
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//public override void RefreshExternalReferences()
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//{
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// if ( m_inputPorts[ 2 ].DataType != WirePortDataType.FLOAT )
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// {
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// m_inputPorts[ 2 ].ChangeType( WirePortDataType.FLOAT, false );
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// }
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//}
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}
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}
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