1 files changed, 152 insertions, 0 deletions
diff --git a/Assets/AmplifyShaderEditor/Plugins/Editor/Nodes/Operators/ScaleNode.cs b/Assets/AmplifyShaderEditor/Plugins/Editor/Nodes/Operators/ScaleNode.cs
new file mode 100644
index 00000000..7445a10d
--- /dev/null
+++ b/Assets/AmplifyShaderEditor/Plugins/Editor/Nodes/Operators/ScaleNode.cs
@@ -0,0 +1,152 @@
+// Amplify Shader Editor - Visual Shader Editing Tool
+// Copyright (c) Amplify Creations, Lda <info@amplify.pt>
+
+using UnityEngine;
+using UnityEditor;
+using System;
+
+namespace AmplifyShaderEditor
+{
+	[Serializable]
+	[NodeAttributes( "Scale", "Math Operators", "Scales input value by a float factor" )]
+	public sealed class ScaleNode : ParentNode
+	{
+		private const string ScaleFactorStr = "Scale";
+
+		[SerializeField]
+		private float m_scaleFactor = 1;
+
+		private int m_cachedPropertyId = -1;
+
+		private const float LabelWidth = 8;
+
+		protected override void CommonInit( int uniqueId )
+		{
+			base.CommonInit( uniqueId );
+			AddInputPort( WirePortDataType.FLOAT, false, " " );
+			AddOutputPort( WirePortDataType.FLOAT, " " );
+			m_insideSize.Set( 50, 10 );
+			m_autoWrapProperties = true;
+			m_previewShaderGUID = "6d8ec9d9dab62c44aa2dcc0e3987760d";
+		}
+
+		public override void SetPreviewInputs()
+		{
+			base.SetPreviewInputs();
+
+			if ( m_cachedPropertyId == -1 )
+				m_cachedPropertyId = Shader.PropertyToID( "_ScaleFloat" );
+
+			PreviewMaterial.SetFloat( m_cachedPropertyId, m_scaleFactor );
+		}
+
+		public override void DrawProperties()
+		{
+			base.DrawProperties();
+			m_scaleFactor = EditorGUILayoutFloatField( ScaleFactorStr, m_scaleFactor );
+		}
+
+		public override void OnInputPortConnected( int portId, int otherNodeId, int otherPortId, bool activateNode = true )
+		{
+			base.OnInputPortConnected( portId, otherNodeId, otherPortId, activateNode );
+			m_inputPorts[ 0 ].MatchPortToConnection();
+			m_outputPorts[ 0 ].ChangeType( m_inputPorts[ 0 ].DataType, false );
+		}
+
+		public override void OnConnectedOutputNodeChanges( int outputPortId, int otherNodeId, int otherPortId, string name, WirePortDataType type )
+		{
+			base.OnConnectedOutputNodeChanges( outputPortId, otherNodeId, otherPortId, name, type );
+			m_inputPorts[ 0 ].MatchPortToConnection();
+			m_outputPorts[ 0 ].ChangeType( InputPorts[ 0 ].DataType, false );
+		}
+
+		public override void OnNodeLayout( DrawInfo drawInfo )
+		{
+			base.OnNodeLayout( drawInfo );
+
+			m_propertyDrawPos.x = m_remainingBox.x + Constants.FLOAT_WIDTH_SPACING * drawInfo.InvertedZoom * 0.5f;
+			m_propertyDrawPos.y = m_remainingBox.y + Constants.INPUT_PORT_DELTA_Y * drawInfo.InvertedZoom * 0.5f;
+			m_propertyDrawPos.width = drawInfo.InvertedZoom * Constants.FLOAT_DRAW_WIDTH_FIELD_SIZE;
+			m_propertyDrawPos.height = drawInfo.InvertedZoom * Constants.FLOAT_DRAW_HEIGHT_FIELD_SIZE;
+		}
+
+		public override void DrawGUIControls( DrawInfo drawInfo )
+		{
+			base.DrawGUIControls( drawInfo );
+
+			if ( drawInfo.CurrentEventType != EventType.MouseDown )
+				return;
+
+			Rect hitBox = m_remainingBox;
+			hitBox.xMin -= LabelWidth * drawInfo.InvertedZoom;
+			bool insideBox = hitBox.Contains( drawInfo.MousePosition );
+
+			if ( insideBox )
+			{
+				GUI.FocusControl( null );
+				m_isEditingFields = true;
+			}
+			else if ( m_isEditingFields && !insideBox )
+			{
+				GUI.FocusControl( null );
+				m_isEditingFields = false;
+			}
+		}
+
+		private bool m_isEditingFields;
+		private float m_previousValue;
+		private string m_fieldText = "0";
+
+		public override void Draw( DrawInfo drawInfo )
+		{
+			base.Draw( drawInfo );
+
+			if ( !m_isVisible )
+				return;
+
+			if ( m_isEditingFields )
+			{
+				UIUtils.DrawFloat( this, ref m_propertyDrawPos, ref m_scaleFactor, LabelWidth );
+			}
+			else if ( drawInfo.CurrentEventType == EventType.Repaint )
+			{
+				Rect fakeField = m_propertyDrawPos;
+				fakeField.xMin += LabelWidth * drawInfo.InvertedZoom;
+				Rect fakeLabel = m_propertyDrawPos;
+				fakeLabel.xMax = fakeField.xMin;
+				EditorGUIUtility.AddCursorRect( fakeLabel, MouseCursor.SlideArrow );
+				EditorGUIUtility.AddCursorRect( fakeField, MouseCursor.Text );
+
+				if ( m_previousValue != m_scaleFactor )
+				{
+					m_previousValue = m_scaleFactor;
+					m_fieldText = m_scaleFactor.ToString();
+				}
+
+				GUI.Label( fakeField, m_fieldText, UIUtils.MainSkin.textField );
+			}
+		}
+
+		public override string GenerateShaderForOutput( int outputId, ref MasterNodeDataCollector dataCollector, bool ignoreLocalvar )
+		{
+			if ( m_outputPorts[ 0 ].IsLocalValue( dataCollector.PortCategory ) )
+				return m_outputPorts[ 0 ].LocalValue( dataCollector.PortCategory );
+
+			string portResult = m_inputPorts[ 0 ].GeneratePortInstructions( ref dataCollector );
+			string result = "( " + portResult + " * " + m_scaleFactor + " )";
+			return CreateOutputLocalVariable( 0, result, ref dataCollector );
+		}
+
+		public override void WriteToString( ref string nodeInfo, ref string connectionsInfo )
+		{
+			base.WriteToString( ref nodeInfo, ref connectionsInfo );
+			IOUtils.AddFieldValueToString( ref nodeInfo, m_scaleFactor );
+		}
+
+		public override void ReadFromString( ref string[] nodeParams )
+		{
+			base.ReadFromString( ref nodeParams );
+			m_scaleFactor = Convert.ToSingle( GetCurrentParam( ref nodeParams ) );
+		}
+	}
+}