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using System;
using System.Collections.Generic;
using System.Linq;
using System.Text.RegularExpressions;
using UnityEngine;
using UnityEditor.Graphing;
using UnityEditor.Graphing.Util;
namespace UnityEditor.ShaderGraph
{
[Serializable]
public abstract class AbstractMaterialGraph : IGraph, ISerializationCallbackReceiver, IGenerateProperties
{
public IGraphObject owner { get; set; }
#region Property data
[NonSerialized]
List<IShaderProperty> m_Properties = new List<IShaderProperty>();
public IEnumerable<IShaderProperty> properties
{
get { return m_Properties; }
}
[SerializeField]
List<SerializationHelper.JSONSerializedElement> m_SerializedProperties = new List<SerializationHelper.JSONSerializedElement>();
[NonSerialized]
List<IShaderProperty> m_AddedProperties = new List<IShaderProperty>();
public IEnumerable<IShaderProperty> addedProperties
{
get { return m_AddedProperties; }
}
[NonSerialized]
List<Guid> m_RemovedProperties = new List<Guid>();
public IEnumerable<Guid> removedProperties
{
get { return m_RemovedProperties; }
}
[NonSerialized]
List<IShaderProperty> m_MovedProperties = new List<IShaderProperty>();
public IEnumerable<IShaderProperty> movedProperties
{
get { return m_MovedProperties; }
}
[SerializeField]
SerializableGuid m_GUID = new SerializableGuid();
public Guid guid
{
get { return m_GUID.guid; }
}
#endregion
#region Node data
[NonSerialized]
Stack<Identifier> m_FreeNodeTempIds = new Stack<Identifier>();
[NonSerialized]
List<AbstractMaterialNode> m_Nodes = new List<AbstractMaterialNode>();
[NonSerialized]
Dictionary<Guid, INode> m_NodeDictionary = new Dictionary<Guid, INode>();
public IEnumerable<T> GetNodes<T>() where T : INode
{
return m_Nodes.Where(x => x != null).OfType<T>();
}
[SerializeField]
List<SerializationHelper.JSONSerializedElement> m_SerializableNodes = new List<SerializationHelper.JSONSerializedElement>();
[NonSerialized]
List<INode> m_AddedNodes = new List<INode>();
public IEnumerable<INode> addedNodes
{
get { return m_AddedNodes; }
}
[NonSerialized]
List<INode> m_RemovedNodes = new List<INode>();
public IEnumerable<INode> removedNodes
{
get { return m_RemovedNodes; }
}
[NonSerialized]
List<INode> m_PastedNodes = new List<INode>();
public IEnumerable<INode> pastedNodes
{
get { return m_PastedNodes; }
}
#endregion
#region Edge data
[NonSerialized]
List<IEdge> m_Edges = new List<IEdge>();
public IEnumerable<IEdge> edges
{
get { return m_Edges; }
}
[SerializeField]
List<SerializationHelper.JSONSerializedElement> m_SerializableEdges = new List<SerializationHelper.JSONSerializedElement>();
[NonSerialized]
Dictionary<Guid, List<IEdge>> m_NodeEdges = new Dictionary<Guid, List<IEdge>>();
[NonSerialized]
List<IEdge> m_AddedEdges = new List<IEdge>();
public IEnumerable<IEdge> addedEdges
{
get { return m_AddedEdges; }
}
[NonSerialized]
List<IEdge> m_RemovedEdges = new List<IEdge>();
public IEnumerable<IEdge> removedEdges
{
get { return m_RemovedEdges; }
}
#endregion
[SerializeField]
InspectorPreviewData m_PreviewData = new InspectorPreviewData();
public InspectorPreviewData previewData
{
get { return m_PreviewData; }
set { m_PreviewData = value; }
}
[SerializeField]
string m_Path;
public string path
{
get { return m_Path; }
set
{
if (m_Path == value)
return;
m_Path = value;
owner.RegisterCompleteObjectUndo("Change Path");
}
}
public void ClearChanges()
{
m_AddedNodes.Clear();
m_RemovedNodes.Clear();
m_PastedNodes.Clear();
m_AddedEdges.Clear();
m_RemovedEdges.Clear();
m_AddedProperties.Clear();
m_RemovedProperties.Clear();
m_MovedProperties.Clear();
}
public virtual void AddNode(INode node)
{
if (node is AbstractMaterialNode)
{
AddNodeNoValidate(node);
ValidateGraph();
}
else
{
Debug.LogWarningFormat("Trying to add node {0} to Material graph, but it is not a {1}", node, typeof(AbstractMaterialNode));
}
}
void AddNodeNoValidate(INode node)
{
var materialNode = (AbstractMaterialNode)node;
materialNode.owner = this;
if (m_FreeNodeTempIds.Any())
{
var id = m_FreeNodeTempIds.Pop();
id.IncrementVersion();
materialNode.tempId = id;
m_Nodes[id.index] = materialNode;
}
else
{
var id = new Identifier(m_Nodes.Count);
materialNode.tempId = id;
m_Nodes.Add(materialNode);
}
m_NodeDictionary.Add(materialNode.guid, materialNode);
m_AddedNodes.Add(materialNode);
}
public void RemoveNode(INode node)
{
if (!node.canDeleteNode)
return;
RemoveNodeNoValidate(node);
ValidateGraph();
}
void RemoveNodeNoValidate(INode node)
{
var materialNode = (AbstractMaterialNode)node;
if (!materialNode.canDeleteNode)
return;
m_Nodes[materialNode.tempId.index] = null;
m_FreeNodeTempIds.Push(materialNode.tempId);
m_NodeDictionary.Remove(materialNode.guid);
m_RemovedNodes.Add(materialNode);
}
void AddEdgeToNodeEdges(IEdge edge)
{
List<IEdge> inputEdges;
if (!m_NodeEdges.TryGetValue(edge.inputSlot.nodeGuid, out inputEdges))
m_NodeEdges[edge.inputSlot.nodeGuid] = inputEdges = new List<IEdge>();
inputEdges.Add(edge);
List<IEdge> outputEdges;
if (!m_NodeEdges.TryGetValue(edge.outputSlot.nodeGuid, out outputEdges))
m_NodeEdges[edge.outputSlot.nodeGuid] = outputEdges = new List<IEdge>();
outputEdges.Add(edge);
}
IEdge ConnectNoValidate(SlotReference fromSlotRef, SlotReference toSlotRef)
{
var fromNode = GetNodeFromGuid(fromSlotRef.nodeGuid);
var toNode = GetNodeFromGuid(toSlotRef.nodeGuid);
if (fromNode == null || toNode == null)
return null;
// if fromNode is already connected to toNode
// do now allow a connection as toNode will then
// have an edge to fromNode creating a cycle.
// if this is parsed it will lead to an infinite loop.
var dependentNodes = new List<INode>();
NodeUtils.CollectNodesNodeFeedsInto(dependentNodes, toNode);
if (dependentNodes.Contains(fromNode))
return null;
var fromSlot = fromNode.FindSlot<ISlot>(fromSlotRef.slotId);
var toSlot = toNode.FindSlot<ISlot>(toSlotRef.slotId);
if (fromSlot.isOutputSlot == toSlot.isOutputSlot)
return null;
var outputSlot = fromSlot.isOutputSlot ? fromSlotRef : toSlotRef;
var inputSlot = fromSlot.isInputSlot ? fromSlotRef : toSlotRef;
s_TempEdges.Clear();
GetEdges(inputSlot, s_TempEdges);
// remove any inputs that exits before adding
foreach (var edge in s_TempEdges)
{
RemoveEdgeNoValidate(edge);
}
var newEdge = new Edge(outputSlot, inputSlot);
m_Edges.Add(newEdge);
m_AddedEdges.Add(newEdge);
AddEdgeToNodeEdges(newEdge);
//Debug.LogFormat("Connected edge: {0} -> {1} ({2} -> {3})\n{4}", newEdge.outputSlot.nodeGuid, newEdge.inputSlot.nodeGuid, fromNode.name, toNode.name, Environment.StackTrace);
return newEdge;
}
public virtual IEdge Connect(SlotReference fromSlotRef, SlotReference toSlotRef)
{
var newEdge = ConnectNoValidate(fromSlotRef, toSlotRef);
ValidateGraph();
return newEdge;
}
public virtual void RemoveEdge(IEdge e)
{
RemoveEdgeNoValidate(e);
ValidateGraph();
}
public void RemoveElements(IEnumerable<INode> nodes, IEnumerable<IEdge> edges)
{
foreach (var edge in edges.ToArray())
RemoveEdgeNoValidate(edge);
foreach (var serializableNode in nodes.ToArray())
RemoveNodeNoValidate(serializableNode);
ValidateGraph();
}
protected void RemoveEdgeNoValidate(IEdge e)
{
e = m_Edges.FirstOrDefault(x => x.Equals(e));
if (e == null)
throw new ArgumentException("Trying to remove an edge that does not exist.", "e");
m_Edges.Remove(e);
List<IEdge> inputNodeEdges;
if (m_NodeEdges.TryGetValue(e.inputSlot.nodeGuid, out inputNodeEdges))
inputNodeEdges.Remove(e);
List<IEdge> outputNodeEdges;
if (m_NodeEdges.TryGetValue(e.outputSlot.nodeGuid, out outputNodeEdges))
outputNodeEdges.Remove(e);
m_RemovedEdges.Add(e);
}
public INode GetNodeFromGuid(Guid guid)
{
INode node;
m_NodeDictionary.TryGetValue(guid, out node);
return node;
}
public INode GetNodeFromTempId(Identifier tempId)
{
if (tempId.index > m_Nodes.Count)
throw new ArgumentException("Trying to retrieve a node using an identifier that does not exist.");
var node = m_Nodes[tempId.index];
if (node == null)
throw new Exception("Trying to retrieve a node using an identifier that does not exist.");
if (node.tempId.version != tempId.version)
throw new Exception("Trying to retrieve a node that was removed from the graph.");
return node;
}
public bool ContainsNodeGuid(Guid guid)
{
return m_NodeDictionary.ContainsKey(guid);
}
public T GetNodeFromGuid<T>(Guid guid) where T : INode
{
var node = GetNodeFromGuid(guid);
if (node is T)
return (T)node;
return default(T);
}
public void GetEdges(SlotReference s, List<IEdge> foundEdges)
{
var node = GetNodeFromGuid(s.nodeGuid);
if (node == null)
{
Debug.LogWarning("Node does not exist");
return;
}
ISlot slot = node.FindSlot<ISlot>(s.slotId);
List<IEdge> candidateEdges;
if (!m_NodeEdges.TryGetValue(s.nodeGuid, out candidateEdges))
return;
foreach (var edge in candidateEdges)
{
var cs = slot.isInputSlot ? edge.inputSlot : edge.outputSlot;
if (cs.nodeGuid == s.nodeGuid && cs.slotId == s.slotId)
foundEdges.Add(edge);
}
}
public virtual void CollectShaderProperties(PropertyCollector collector, GenerationMode generationMode)
{
foreach (var prop in properties)
collector.AddShaderProperty(prop);
}
public void AddShaderProperty(IShaderProperty property)
{
if (property == null)
return;
if (m_Properties.Contains(property))
return;
m_Properties.Add(property);
m_AddedProperties.Add(property);
}
public string SanitizePropertyName(string displayName, Guid guid = default(Guid))
{
displayName = displayName.Trim();
return GraphUtil.SanitizeName(m_Properties.Where(p => p.guid != guid).Select(p => p.displayName), "{0} ({1})", displayName);
}
public string SanitizePropertyReferenceName(string referenceName, Guid guid = default(Guid))
{
referenceName = referenceName.Trim();
if (string.IsNullOrEmpty(referenceName))
return null;
if (!referenceName.StartsWith("_"))
referenceName = "_" + referenceName;
referenceName = Regex.Replace(referenceName, @"(?:[^A-Za-z_0-9])|(?:\s)", "_");
return GraphUtil.SanitizeName(m_Properties.Where(p => p.guid != guid).Select(p => p.referenceName), "{0}_{1}", referenceName);
}
public void RemoveShaderProperty(Guid guid)
{
var propertyNodes = GetNodes<PropertyNode>().Where(x => x.propertyGuid == guid).ToList();
foreach (var propNode in propertyNodes)
ReplacePropertyNodeWithConcreteNodeNoValidate(propNode);
RemoveShaderPropertyNoValidate(guid);
ValidateGraph();
}
public void MoveShaderProperty(IShaderProperty property, int newIndex)
{
if (newIndex > m_Properties.Count || newIndex < 0)
throw new ArgumentException("New index is not within properties list.");
var currentIndex = m_Properties.IndexOf(property);
if (currentIndex == -1)
throw new ArgumentException("Property is not in graph.");
if (newIndex == currentIndex)
return;
m_Properties.RemoveAt(currentIndex);
if (newIndex > currentIndex)
newIndex--;
var isLast = newIndex == m_Properties.Count;
if (isLast)
m_Properties.Add(property);
else
m_Properties.Insert(newIndex, property);
if (!m_MovedProperties.Contains(property))
m_MovedProperties.Add(property);
}
public int GetShaderPropertyIndex(IShaderProperty property)
{
return m_Properties.IndexOf(property);
}
void RemoveShaderPropertyNoValidate(Guid guid)
{
if (m_Properties.RemoveAll(x => x.guid == guid) > 0)
{
m_RemovedProperties.Add(guid);
m_AddedProperties.RemoveAll(x => x.guid == guid);
m_MovedProperties.RemoveAll(x => x.guid == guid);
}
}
static List<IEdge> s_TempEdges = new List<IEdge>();
public void ReplacePropertyNodeWithConcreteNode(PropertyNode propertyNode)
{
ReplacePropertyNodeWithConcreteNodeNoValidate(propertyNode);
ValidateGraph();
}
void ReplacePropertyNodeWithConcreteNodeNoValidate(PropertyNode propertyNode)
{
var property = properties.FirstOrDefault(x => x.guid == propertyNode.propertyGuid);
if (property == null)
return;
var node = property.ToConcreteNode();
if (!(node is AbstractMaterialNode))
return;
var slot = propertyNode.FindOutputSlot<MaterialSlot>(PropertyNode.OutputSlotId);
var newSlot = node.GetOutputSlots<MaterialSlot>().FirstOrDefault(s => s.valueType == slot.valueType);
if (newSlot == null)
return;
node.drawState = propertyNode.drawState;
AddNodeNoValidate(node);
foreach (var edge in this.GetEdges(slot.slotReference))
ConnectNoValidate(newSlot.slotReference, edge.inputSlot);
RemoveNodeNoValidate(propertyNode);
}
public void ValidateGraph()
{
var propertyNodes = GetNodes<PropertyNode>().Where(n => !m_Properties.Any(p => p.guid == n.propertyGuid)).ToArray();
foreach (var pNode in propertyNodes)
ReplacePropertyNodeWithConcreteNodeNoValidate(pNode);
//First validate edges, remove any
//orphans. This can happen if a user
//manually modifies serialized data
//of if they delete a node in the inspector
//debug view.
foreach (var edge in edges.ToArray())
{
var outputNode = GetNodeFromGuid(edge.outputSlot.nodeGuid);
var inputNode = GetNodeFromGuid(edge.inputSlot.nodeGuid);
MaterialSlot outputSlot = null;
MaterialSlot inputSlot = null;
if (outputNode != null && inputNode != null)
{
outputSlot = outputNode.FindOutputSlot<MaterialSlot>(edge.outputSlot.slotId);
inputSlot = inputNode.FindInputSlot<MaterialSlot>(edge.inputSlot.slotId);
}
if (outputNode == null
|| inputNode == null
|| outputSlot == null
|| inputSlot == null
|| !outputSlot.IsCompatibleWith(inputSlot))
{
//orphaned edge
RemoveEdgeNoValidate(edge);
}
}
foreach (var node in GetNodes<INode>())
node.ValidateNode();
foreach (var edge in m_AddedEdges.ToList())
{
if (!ContainsNodeGuid(edge.outputSlot.nodeGuid) || !ContainsNodeGuid(edge.inputSlot.nodeGuid))
{
Debug.LogWarningFormat("Added edge is invalid: {0} -> {1}\n{2}", edge.outputSlot.nodeGuid, edge.inputSlot.nodeGuid, Environment.StackTrace);
m_AddedEdges.Remove(edge);
}
}
}
public void ReplaceWith(IGraph other)
{
var otherMg = other as AbstractMaterialGraph;
if (otherMg == null)
throw new ArgumentException("Can only replace with another AbstractMaterialGraph", "other");
using (var removedPropertiesPooledObject = ListPool<Guid>.GetDisposable())
{
var removedPropertyGuids = removedPropertiesPooledObject.value;
foreach (var property in m_Properties)
removedPropertyGuids.Add(property.guid);
foreach (var propertyGuid in removedPropertyGuids)
RemoveShaderPropertyNoValidate(propertyGuid);
}
foreach (var otherProperty in otherMg.properties)
{
if (!properties.Any(p => p.guid == otherProperty.guid))
AddShaderProperty(otherProperty);
}
other.ValidateGraph();
ValidateGraph();
// Current tactic is to remove all nodes and edges and then re-add them, such that depending systems
// will re-initialize with new references.
using (var pooledList = ListPool<IEdge>.GetDisposable())
{
var removedNodeEdges = pooledList.value;
removedNodeEdges.AddRange(m_Edges);
foreach (var edge in removedNodeEdges)
RemoveEdgeNoValidate(edge);
}
using (var removedNodesPooledObject = ListPool<Guid>.GetDisposable())
{
var removedNodeGuids = removedNodesPooledObject.value;
removedNodeGuids.AddRange(m_Nodes.Where(n => n != null).Select(n => n.guid));
foreach (var nodeGuid in removedNodeGuids)
RemoveNodeNoValidate(m_NodeDictionary[nodeGuid]);
}
ValidateGraph();
foreach (var node in other.GetNodes<INode>())
AddNodeNoValidate(node);
foreach (var edge in other.edges)
ConnectNoValidate(edge.outputSlot, edge.inputSlot);
ValidateGraph();
}
internal void PasteGraph(CopyPasteGraph graphToPaste, List<INode> remappedNodes, List<IEdge> remappedEdges)
{
var nodeGuidMap = new Dictionary<Guid, Guid>();
foreach (var node in graphToPaste.GetNodes<INode>())
{
INode pastedNode = node;
var oldGuid = node.guid;
var newGuid = node.RewriteGuid();
nodeGuidMap[oldGuid] = newGuid;
// Check if the property nodes need to be made into a concrete node.
if (node is PropertyNode)
{
PropertyNode propertyNode = (PropertyNode)node;
// If the property is not in the current graph, do check if the
// property can be made into a concrete node.
if (!m_Properties.Select(x => x.guid).Contains(propertyNode.propertyGuid))
{
// If the property is in the serialized paste graph, make the property node into a property node.
var pastedGraphMetaProperties = graphToPaste.metaProperties.Where(x => x.guid == propertyNode.propertyGuid);
if (pastedGraphMetaProperties.Any())
{
pastedNode = pastedGraphMetaProperties.FirstOrDefault().ToConcreteNode();
pastedNode.drawState = node.drawState;
nodeGuidMap[oldGuid] = pastedNode.guid;
}
}
}
var drawState = node.drawState;
var position = drawState.position;
position.x += 30;
position.y += 30;
drawState.position = position;
node.drawState = drawState;
remappedNodes.Add(pastedNode);
AddNode(pastedNode);
// add the node to the pasted node list
m_PastedNodes.Add(pastedNode);
}
// only connect edges within pasted elements, discard
// external edges.
foreach (var edge in graphToPaste.edges)
{
var outputSlot = edge.outputSlot;
var inputSlot = edge.inputSlot;
Guid remappedOutputNodeGuid;
Guid remappedInputNodeGuid;
if (nodeGuidMap.TryGetValue(outputSlot.nodeGuid, out remappedOutputNodeGuid)
&& nodeGuidMap.TryGetValue(inputSlot.nodeGuid, out remappedInputNodeGuid))
{
var outputSlotRef = new SlotReference(remappedOutputNodeGuid, outputSlot.slotId);
var inputSlotRef = new SlotReference(remappedInputNodeGuid, inputSlot.slotId);
remappedEdges.Add(Connect(outputSlotRef, inputSlotRef));
}
}
ValidateGraph();
}
public void OnBeforeSerialize()
{
m_SerializableNodes = SerializationHelper.Serialize(GetNodes<INode>());
m_SerializableEdges = SerializationHelper.Serialize<IEdge>(m_Edges);
m_SerializedProperties = SerializationHelper.Serialize<IShaderProperty>(m_Properties);
}
public virtual void OnAfterDeserialize()
{
// have to deserialize 'globals' before nodes
m_Properties = SerializationHelper.Deserialize<IShaderProperty>(m_SerializedProperties, GraphUtil.GetLegacyTypeRemapping());
var nodes = SerializationHelper.Deserialize<INode>(m_SerializableNodes, GraphUtil.GetLegacyTypeRemapping());
m_Nodes = new List<AbstractMaterialNode>(nodes.Count);
m_NodeDictionary = new Dictionary<Guid, INode>(nodes.Count);
foreach (var node in nodes.OfType<AbstractMaterialNode>())
{
node.owner = this;
node.UpdateNodeAfterDeserialization();
node.tempId = new Identifier(m_Nodes.Count);
m_Nodes.Add(node);
m_NodeDictionary.Add(node.guid, node);
}
m_SerializableNodes = null;
m_Edges = SerializationHelper.Deserialize<IEdge>(m_SerializableEdges, GraphUtil.GetLegacyTypeRemapping());
m_SerializableEdges = null;
foreach (var edge in m_Edges)
AddEdgeToNodeEdges(edge);
}
public void OnEnable()
{
foreach (var node in GetNodes<INode>().OfType<IOnAssetEnabled>())
{
node.OnEnable();
}
}
}
[Serializable]
public class InspectorPreviewData
{
public SerializableMesh serializedMesh = new SerializableMesh();
[NonSerialized]
public Quaternion rotation = Quaternion.identity;
[NonSerialized]
public float scale = 1f;
}
}