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using System;
using System.Collections.Generic;
using UnityEngine;
namespace NGS.MeshFusionPro;
public abstract class ObjectsCombiner<TCombinedObject, TCombineSource> where TCombinedObject : ICombinedObject where TCombineSource : ICombineSource
{
private List<TCombinedObject> _combinedObjects;
private List<TCombineSource> _sources;
private List<TCombineSource> _sourcesForCombine;
public IReadOnlyList<TCombinedObject> CombinedObjects => _combinedObjects;
public bool ContainSources => _sources.Count > 0;
public event Action<TCombinedObject> onCombinedObjectCreated;
protected ObjectsCombiner()
{
_sources = new List<TCombineSource>();
_combinedObjects = new List<TCombinedObject>();
_sourcesForCombine = new List<TCombineSource>();
}
public virtual void AddSource(TCombineSource source)
{
_sources.Add(source);
}
public void AddSources(IEnumerable<TCombineSource> sources)
{
foreach (TCombineSource source in sources)
{
AddSource(source);
}
}
public void RemoveSource(TCombineSource source)
{
_sources.Remove(source);
}
public void Combine()
{
if (_sources.Count != 0)
{
CleanEmptyData();
CombineInternal();
_sources.Clear();
}
}
private void CleanEmptyData()
{
int num = 0;
while (num < _combinedObjects.Count)
{
if (_combinedObjects[num] == null)
{
_combinedObjects.RemoveAt(num);
}
else
{
num++;
}
}
num = 0;
while (num < _sources.Count)
{
if (_sources[num] == null)
{
_sources.RemoveAt(num);
}
else
{
num++;
}
}
}
private void CombineInternal()
{
_sourcesForCombine.Clear();
int num = 0;
while (num <= _combinedObjects.Count && _sources.Count != 0)
{
bool flag = false;
TCombinedObject val;
if (num == _combinedObjects.Count)
{
try
{
val = CreateCombinedObject(_sources[0]);
_combinedObjects.Add(val);
flag = true;
}
catch (Exception ex)
{
Debug.Log("Unable to create CombinedObject : " + ex.Message + ex.StackTrace);
_sources.RemoveAt(0);
continue;
}
}
else
{
val = _combinedObjects[num];
}
CombinedObjectMatcher<TCombinedObject, TCombineSource> matcher = GetMatcher();
matcher.StartMatching(val);
int num2 = 0;
while (num2 < _sources.Count)
{
TCombineSource val2 = _sources[num2];
if (matcher.CanAddSource(val2))
{
_sourcesForCombine.Add(val2);
matcher.SourceAdded(val2);
_sources.RemoveAt(num2);
}
else
{
num2++;
}
}
if (_sourcesForCombine.Count > 0)
{
try
{
CombineSources(val, _sourcesForCombine);
_sourcesForCombine.Clear();
}
catch (Exception ex2)
{
Debug.Log("Unable to combine sources in ObjectsCombiner : " + ex2.Message + ex2.StackTrace);
_sourcesForCombine.Clear();
continue;
}
}
if (flag)
{
this.onCombinedObjectCreated?.Invoke(val);
}
num++;
}
}
protected abstract CombinedObjectMatcher<TCombinedObject, TCombineSource> GetMatcher();
protected abstract TCombinedObject CreateCombinedObject(TCombineSource source);
protected abstract void CombineSources(TCombinedObject root, IList<TCombineSource> sources);
}
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