private TextureSet CombineSet(TextureSet source, TextureSet target, AtlasTile sourcePosition)
{
target.Albedo = CombineTexture(source.Albedo, target.Albedo, sourcePosition, Color.clear);
//target.Emission = CombineTexture(source.Emission, target.Emission, sourcePosition, Color.clear);
//target.Height = CombineTexture(source.Height, target.Height, sourcePosition, Color.clear);
//target.Normal = CombineTexture(source.Normal, target.Normal, sourcePosition, new Color(128, 128, 255));
//target.Occulsion = CombineTexture(source.Occulsion, target.Occulsion, sourcePosition, Color.clear);
return(target);
}
private void ApplySet(TextureSet set)
{
if (set.Albedo != null)
{
set.Albedo.Apply();
}
if (set.Emission != null)
{
set.Emission.Apply();
}
if (set.Height != null)
{
set.Height.Apply();
}
if (set.Normal != null)
{
set.Normal.Apply();
}
if (set.Occulsion != null)
{
set.Occulsion.Apply();
}
}
public void Generate()
{
if (!Monitor.TryEnter(_genLock))
{
return;
}
try
{
Map = new Dictionary <string, AtlasTile>();
var allItems = Resources.LoadAll <Texture2D>(_resourceLocation);
var textures = PreprocessTextures(Resources.LoadAll <Texture2D>(_resourceLocation));
_numImagesFound = allItems.Length;
WxH = (int)Math.Ceiling(Math.Sqrt(_numImagesFound));
TileFraction = (float)1 / WxH;
_mapSize = WxH * _textureSize;
_stitchedTextures = new TextureSet();
var curRow = 0;
var curCol = 0;
foreach (var img in textures)
{
if (curCol >= WxH)
{
curCol = 0;
curRow += 1;
}
_stitchedTextures = CombineSet(img, _stitchedTextures, new AtlasTile(curCol, curRow));
Map.Add(img.Name, new AtlasTile(curCol, curRow));
curCol++;
}
ApplySet(_stitchedTextures);
//stitchedTextures.Apply();
//Texture = stitchedTextures;
Material = new Material(Shader.Find("Standard"))
{
name = "BlockMaterial",
mainTexture = _stitchedTextures.Albedo,
};
Material.SetTexture("_BumpMap", _stitchedTextures.Normal);
Material.SetTexture("_OcclusionMap", _stitchedTextures.Occulsion);
//Material.SetTexture("_EmissionMap", _stitchedTextures.Emission);
//Material.SetTexture("_ParallaxMap", _stitchedTextures.Height);
Material.SetFloat("_SmoothnessTextureChannel", 1f);
var albedoBytes = _stitchedTextures.Albedo.EncodeToPNG();
//var normalBytes = _stitchedTextures.Normal.EncodeToPNG();
//var occulsionBytes = _stitchedTextures.Occulsion.EncodeToPNG();
using (var file = System.IO.File.Open(Application.dataPath + "/" + "diffuseAtlas.png", FileMode.Create))
{
var bw = new BinaryWriter(file);
bw.Write(albedoBytes);
}
HasGenerated = true;
}
catch (Exception ex)
{
//Handle this in some meaningful manner
UnityEngine.Debug.LogError(ex.Message);
throw;
}
finally
{
Monitor.Exit(_genLock);
}
}
private List <TextureSet> PreprocessTextures(IEnumerable <Texture2D> textures)
{
var curName = "";
var ret = new List <TextureSet>();
var firstTime = true;
var curTex = new TextureSet();
foreach (var tex in textures)
{
var texArr = tex.name.Split('_').ToList();
texArr.RemoveAt(texArr.Count - 1);
var texName = string.Join("_", texArr.ToArray());
if (curName != texName)
{
if (!firstTime)
{
ret.Add(curTex);
}
curTex = new TextureSet()
{
Name = texName
};
curName = texName;
firstTime = false;
}
if (tex.name.ToUpper().EndsWith("_A"))
{
curTex.Albedo = tex;
}
else if (tex.name.ToUpper().EndsWith("_N"))
{
curTex.Normal = tex;
}
else if (tex.name.ToUpper().EndsWith("_O"))
{
curTex.Occulsion = tex;
}
else if (tex.name.ToUpper().EndsWith("_E"))
{
curTex.Emission = tex;
}
else if (tex.name.ToUpper().EndsWith("_H"))
{
curTex.Height = tex;
}
}
if (!firstTime)
{
ret.Add(curTex);
}
/*
* return (from tex in textures
* group tex by new {name = tex.name.Split('_')[0]} into g
* select new TextureSet()
* {
* Name = g.Key.name,
* Albedo = ProcessTexture(g.SingleOrDefault(x => x.name.ToUpper().EndsWith("_A"))),
* Normal = ProcessTexture(g.SingleOrDefault(x => x.name.ToUpper().EndsWith("_N"))),
* Occulsion = ProcessTexture(g.SingleOrDefault(x => x.name.ToUpper().EndsWith("_O"))),
* Emission = ProcessTexture(g.SingleOrDefault(x => x.name.ToUpper().EndsWith("_E"))),
* Height = ProcessTexture(g.SingleOrDefault(x => x.name.ToUpper().EndsWith("_H")))
* }).ToList();
*/
return(ret);
}
