public static Texture2D MergeSprites(Sprite[] sprites)
{
PointInt Size = GetMaxSizesTextures(sprites);
Texture2D mergedTexture = new Texture2D(Size.X, Size.Y);
for (int y = 0; y < Size.Y; y++)
{
for (int x = 0; x < Size.X; x++)
{
Color color = new Color(0, 0, 0, 0);
mergedTexture.SetPixel(x, y, color);
}
}
mergedTexture.Apply();
Texture2D[] extendedTextures = new Texture2D[sprites.Length];
for (int it = 0; it < sprites.Length; it++)
{
extendedTextures[it] = ExtendTextureSize(sprites[it].texture, Size);
}
UnityEngine.Debug.Log("ext text: " + Size.X + ";" + Size.Y);
for (int i = 0; i < sprites.Length; i++)
{
Texture2D mergedTextureT = CombineTextureAOverB(extendedTextures[i], mergedTexture);
mergedTexture = mergedTextureT;
}
return(mergedTexture);
}
public static PointInt GetMaxSizesTextures(Texture2D[] textures)
{
int maxWidth = 0;
int maxHeight = 0;
foreach (Texture2D t2d in textures)
{
maxWidth = (t2d.width > maxWidth) ? t2d.width : maxWidth;
maxHeight = (t2d.height > maxHeight) ? t2d.height : maxHeight;
}
PointInt maxP = new PointInt(maxWidth, maxHeight);
return(maxP);
}
public static Texture2D ExtendTextureSize(Texture2D texture, PointInt newSize)
{
int oldWidth = texture.width;
int oldHeight = texture.height;
int newWidth = newSize.X;
int newHeight = newSize.Y;
int deltaW = (newWidth - oldWidth) / 2;
int deltaH = (newHeight - oldHeight) / 2;
Texture2D extendTexture = new Texture2D(newWidth, newHeight);
for (int iH = 0; iH < newHeight; iH++)
{
for (int iW = 0; iW < newWidth; iW++)
{
Color color = (iW <deltaW || iW> newWidth - deltaW) ? new Color(0f, 0f, 0f, 0f) : texture.GetPixel(iW - deltaW, iH - deltaH);
extendTexture.SetPixel(iW, iH, color);
}
}
extendTexture.Apply();
return(extendTexture);
}