private IEnumerable <Texture2D> SplitVertical(Texture2D source, int maxSize)
{
var splitCount = SplitHelper.GetSplitCount(source.height, maxSize);
if (splitCount > 1)
{
var partHeight = Mathf.FloorToInt((float)source.height / splitCount);
for (var i = 0; i < splitCount; i++)
{
if (i == splitCount - 1)
{
var commonSplitHeight = partHeight * i;
partHeight = source.height - commonSplitHeight;
}
var rect = new Rect(0.0f, i * partHeight, source.width, partHeight);
var texture = GetTextureByRect(source, rect);
texture.name = SplitHelper.GetSplittedTextureName(i, source.name);
yield return(texture);
}
}
else
{
yield return(source);
}
}
private IEnumerable <Texture2D> SplitHorizontal(Texture2D source, int maxSize)
{
var splitCount = SplitHelper.GetSplitCount(source.width, maxSize);
if (splitCount > 1)
{
var partWidth = Mathf.FloorToInt((float)source.width / splitCount);
for (var i = 0; i < splitCount; i++)
{
var rect = new Rect(i * partWidth, 0.0f, partWidth, source.height);
if (i == splitCount - 1)
{
var commonSplitWidth = partWidth * i;
partWidth = source.width - commonSplitWidth;
rect = new Rect(commonSplitWidth, 0.0f, partWidth, source.height);
}
var texture = GetTextureByRect(source, rect);
texture.name = SplitHelper.GetSplittedTextureName(i, source.name);
yield return(texture);
}
}
else
{
yield return(source);
}
}
public IEnumerable <Texture2D> SplitTexture(Texture2D source, Vector2Int maxSize)
{
if (source == null)
{
yield break;
}
if (source.width > maxSize.x && source.height > maxSize.y)
{
var counter = 0;
foreach (var texture2D in SplitVerticalAndHorizontal(source, maxSize))
{
texture2D.name = SplitHelper.GetSplittedTextureName(counter, texture2D.name);
yield return(texture2D);
counter++;
}
}
else if (source.width > maxSize.x)
{
foreach (var texture2D in SplitHorizontal(source, maxSize.x))
{
yield return(texture2D);
}
}
else if (source.height > maxSize.y)
{
foreach (var texture2D in SplitVertical(source, maxSize.y))
{
yield return(texture2D);
}
}
else
{
yield return(source);
}
}