public AtlasEntry( Texture2D a_rAtlasTexture, Material a_rAtlasMaterial, string[ ] a_rTextureGUIDs, PackedRect[ ] a_rUVs )
{
m_rAtlasTexture = a_rAtlasTexture;
m_rAtlasMaterial = a_rAtlasMaterial;
m_rAtlasedTextureGUIDs = a_rTextureGUIDs;
m_rUVs = a_rUVs;
}
static RectPack TryPackingRects(List <Rect> rects, Rect drawingArea)
{
// Try to pack all rects.
List <Rect> emptySpaces = new List <Rect>();
emptySpaces.Add(drawingArea);
List <Rect> storedRects = new List <Rect>();
bool couldntPackRect = false;
for (int i = 0; i < rects.Count && !couldntPackRect; i++)
{
PackedRect packedRect = null;
// Try to pack the rect in an empty space.
for (int j = emptySpaces.Count - 1; j >= 0 && packedRect == null; j--)
{
packedRect = StoreRect(rects[i], emptySpaces[j]);
if (packedRect != null)
{
storedRects.Add(new Rect(packedRect.storedRect));
emptySpaces.RemoveAt(j);
emptySpaces.Add(packedRect.biggerEmptyRect);
emptySpaces.Add(packedRect.smallerEmptyRect);
}
}
// If we can't pack this rect, stop.
if (packedRect == null)
{
couldntPackRect = true;
}
}
// Return the rects that we could pack.
return(new RectPack(drawingArea, storedRects));
}
private int Gather(float xMin, float xMax, int start = 0)
{
int count = sortedRectList.size;
PackedRect[] packedRects = sortedRectList.array;
for (int i = start; i < count; i++)
{
ref PackedRect rect = ref packedRects[i];
if (rect.xMin > xMax)
{
return(i);
}
}
private AtlasEntry GenerateAtlasEntry(int a_iAtlasEntryIndex, Texture2D a_rAtlasTexture, Dictionary <int, PackedRect> a_rTextureIndexUVRectsDict, string a_oGeneratedDataPathLocal)
{
Texture2D rCurrentAtlasTexture;
Material rCurrentAtlasMaterial;
float fWidth = (float)a_rAtlasTexture.width;
float fHeight = (float)a_rAtlasTexture.height;
if (m_oAtlasEntries != null && m_oAtlasEntries.Length > a_iAtlasEntryIndex && m_oAtlasEntries[a_iAtlasEntryIndex] != null)
{
AtlasEntry rAtlasEntry = m_oAtlasEntries[a_iAtlasEntryIndex];
rCurrentAtlasTexture = rAtlasEntry.atlasTexture;
rCurrentAtlasMaterial = rAtlasEntry.material;
}
else
{
rCurrentAtlasTexture = null;
rCurrentAtlasMaterial = null;
}
// rSavedAtlasTexture = instance of the saved/exported/serialized atlas texture at a_oGeneratedDataPathLocal
Texture2D rSavedAtlasTexture = this.ExportAndSaveAtlasTexture(a_iAtlasEntryIndex, rCurrentAtlasTexture, a_rAtlasTexture, a_oGeneratedDataPathLocal);
Material rSavedAtlasMaterial = this.GenerateAtlasMaterial(a_iAtlasEntryIndex, rCurrentAtlasMaterial, rSavedAtlasTexture, a_oGeneratedDataPathLocal);
int iTextureCount = a_rTextureIndexUVRectsDict.Count;
string[] oTextureGUIDs = new string[iTextureCount];
PackedRect[] oPackedUVRects = new PackedRect[iTextureCount];
int iTextureIndex = 0;
foreach (KeyValuePair <int, PackedRect> rTextureIndexPackedUVRectPair in a_rTextureIndexUVRectsDict)
{
oTextureGUIDs[iTextureIndex] = m_rTextureContainers[rTextureIndexPackedUVRectPair.Key].GUID;
PackedRect oNormalizedPackedRect = rTextureIndexPackedUVRectPair.Value;
// Normalize UVs
Rect rUVRect = oNormalizedPackedRect.rect;
oNormalizedPackedRect.rect = new Rect(rUVRect.x / fWidth,
rUVRect.y / fHeight,
(rUVRect.width - m_iPadding) / fWidth,
(rUVRect.height - m_iPadding) / fHeight);
oPackedUVRects[iTextureIndex] = oNormalizedPackedRect;
++iTextureIndex;
}
return(new AtlasEntry(rSavedAtlasTexture, rSavedAtlasMaterial, oTextureGUIDs, oPackedUVRects));
}
private Texture2D GenerateAtlasTexture(Dictionary <int, PackedRect> a_rTextureIndexPackedUVRectsDict, int a_iAtlasWidth, int a_iAtlasHeight)
{
Texture2D oAtlasTexture = new Texture2D(a_iAtlasWidth, a_iAtlasHeight, TextureFormat.ARGB32, false);
// GetPixels32 returns a copy of the atlas pixels
//Color32[ ] oAtlasColor32 = oAtlasTexture.GetPixels32( );
// Create ourself the pixel array so we don't need to fill it: array is zero initialized
Color32[] oAtlasColor32 = new Color32[a_iAtlasWidth * a_iAtlasHeight];
/*
* //Fill with black zero alpha
* Color32 f4ClearColor = new Color32( 0, 0, 0, 0 );
* for( int iColorIndex = 0, iColorCount = oAtlasColor32.Length; iColorIndex < iColorCount; ++iColorIndex )
* {
* oAtlasColor32[ iColorIndex ] = f4ClearColor;
* }
*/
// Copy the atlased textures pixels into the atlas texture
foreach (KeyValuePair <int, PackedRect> rIndexedPackedRect in a_rTextureIndexPackedUVRectsDict)
{
// The texture to copy
Texture2D rPackedTexture = m_rTextureContainers[rIndexedPackedRect.Key];
PackedRect rPackedRect = rIndexedPackedRect.Value;
// The UV rect
Rect rUVRect = rPackedRect.rect;
//Debug.Log( rPackedTexture.name + ": " + rPackedRect.rect.x + " / " + rPackedRect.rect.y + " / " + rPackedTexture.width + "px ; " + rPackedTexture.height + "px / flipped: " + rPackedRect.isFlipped );
// Copy texture into the atlas
SetPixelBlock32(rPackedTexture.GetPixels32( ), oAtlasColor32,
(int)rUVRect.x, (int)rUVRect.y,
(int)rUVRect.width, (int)rUVRect.height,
a_iAtlasWidth, a_iAtlasHeight,
rPackedRect.isFlipped);
}
// Set the new atlas pixels
oAtlasTexture.SetPixels32(oAtlasColor32);
oAtlasTexture.Apply( );
oAtlasColor32 = null;
return(oAtlasTexture);
}
private AtlasEntry GenerateAtlasEntry( int a_iAtlasEntryIndex, Texture2D a_rAtlasTexture, Dictionary<int,PackedRect> a_rTextureIndexUVRectsDict, string a_oGeneratedDataPathLocal )
{
Texture2D rCurrentAtlasTexture;
Material rCurrentAtlasMaterial;
float fWidth = (float) a_rAtlasTexture.width;
float fHeight = (float) a_rAtlasTexture.height;
if( m_oAtlasEntries != null && m_oAtlasEntries.Length > a_iAtlasEntryIndex && m_oAtlasEntries[ a_iAtlasEntryIndex ] != null )
{
AtlasEntry rAtlasEntry = m_oAtlasEntries[ a_iAtlasEntryIndex ];
rCurrentAtlasTexture = rAtlasEntry.atlasTexture;
rCurrentAtlasMaterial = rAtlasEntry.material;
}
else
{
rCurrentAtlasTexture = null;
rCurrentAtlasMaterial = null;
}
// rSavedAtlasTexture = instance of the saved/exported/serialized atlas texture at a_oGeneratedDataPathLocal
Texture2D rSavedAtlasTexture = this.ExportAndSaveAtlasTexture( a_iAtlasEntryIndex, rCurrentAtlasTexture, a_rAtlasTexture, a_oGeneratedDataPathLocal );
Material rSavedAtlasMaterial = this.GenerateAtlasMaterial( a_iAtlasEntryIndex, rCurrentAtlasMaterial, rSavedAtlasTexture, a_oGeneratedDataPathLocal );
int iTextureCount = a_rTextureIndexUVRectsDict.Count;
string[ ] oTextureGUIDs = new string[ iTextureCount ];
PackedRect[ ] oPackedUVRects = new PackedRect[ iTextureCount ];
int iTextureIndex = 0;
foreach( KeyValuePair<int,PackedRect> rTextureIndexPackedUVRectPair in a_rTextureIndexUVRectsDict )
{
oTextureGUIDs[ iTextureIndex ] = m_rTextureContainers[ rTextureIndexPackedUVRectPair.Key ].GUID;
PackedRect oNormalizedPackedRect = rTextureIndexPackedUVRectPair.Value;
// Normalize UVs
Rect rUVRect = oNormalizedPackedRect.rect;
oNormalizedPackedRect.rect = new Rect( rUVRect.x / fWidth,
rUVRect.y / fHeight,
rUVRect.width / fWidth,
rUVRect.height / fHeight );
oPackedUVRects[ iTextureIndex ] = oNormalizedPackedRect;
++iTextureIndex;
}
return new AtlasEntry( rSavedAtlasTexture, rSavedAtlasMaterial, oTextureGUIDs, oPackedUVRects );
}