private static bool CanPackTexturesInSize(Texture2D[] textures, int size, int padding, UITexturePacker.FreeRectChoiceHeuristic heuristic)
{
using (var packer = new UITexturePackerSpec(size, size, false))
{
for (int i = 0; i < textures.Length; i++)
{
Texture2D tex = textures[i];
if (!tex) continue;
Rect rect = new Rect();
int xPadding;
int yPadding;
for (xPadding = 1; xPadding >= 0; --xPadding)
{
for (yPadding = 1; yPadding >= 0; --yPadding)
{
rect = packer.Insert(tex.width + (xPadding*padding), tex.height + (yPadding*padding), heuristic);
if (rect.width > 0 && rect.height > 0) break;
// After having no padding if it still doesn't fit -- we can't pack all textures in this size.
else if (xPadding == 0 && yPadding == 0)
{
return false;
}
}
if (rect.width > 0 && rect.height > 0) break;
}
}
}
return true;
}
private static Texture2D CreateTexture(Texture2D[] textures, ref int?size, int padding, out Rect[] texRects, out int minAtlasSize, UITexturePacker.FreeRectChoiceHeuristic heuristic)
{
var result = new Texture2D(1, 1);
minAtlasSize = GetMinAtlasSize(textures, size ?? 128, ref padding, size ?? 128, heuristic);
Debug.Log("*************************** Min size = " + minAtlasSize + " - " + DateTime.Now);
NGUISettings.forceSquareAtlas = true;
texRects = UITexturePackerSpec.PackTexturesSpec(result, textures, minAtlasSize, minAtlasSize, padding, minAtlasSize, heuristic);
Debug.Log("*************************** texture packed - " + DateTime.Now);
if (size == null)
{
int power = (int)Math.Round(Math.Log(minAtlasSize, 2));
size = (int)Math.Pow(2, power);
}
if (size <= minAtlasSize)
{
TextureScale.Resize(result, size.Value, size.Value, InterpolationMode.HighQualityBicubic);
}
else
{
texRects = UITexturePackerSpec.PackTextures(result, textures, size.Value, size.Value, padding, size.Value);
}
return(result);
}
private static bool CanPackTexturesInSize(Texture2D[] textures, int size, int padding, UITexturePacker.FreeRectChoiceHeuristic heuristic)
{
using (var packer = new UITexturePackerSpec(size, size, false))
{
for (int i = 0; i < textures.Length; i++)
{
Texture2D tex = textures[i];
if (!tex)
{
continue;
}
Rect rect = new Rect();
int xPadding;
int yPadding;
for (xPadding = 1; xPadding >= 0; --xPadding)
{
for (yPadding = 1; yPadding >= 0; --yPadding)
{
rect = packer.Insert(tex.width + (xPadding * padding), tex.height + (yPadding * padding), heuristic);
if (rect.width > 0 && rect.height > 0)
{
break;
}
// After having no padding if it still doesn't fit -- we can't pack all textures in this size.
else if (xPadding == 0 && yPadding == 0)
{
return(false);
}
}
if (rect.width > 0 && rect.height > 0)
{
break;
}
}
}
}
return(true);
}
public static Rect[] PackTexturesSpec(Texture2D texture, Texture2D[] textures, int width, int height, int padding, int maxSize, FreeRectChoiceHeuristic heuristic)
{
if (width > maxSize && height > maxSize)
{
return(null);
}
if (width > maxSize || height > maxSize)
{
int temp = width; width = height; height = temp;
}
// Force square by sizing up
if (NGUISettings.forceSquareAtlas)
{
if (width > height)
{
height = width;
}
else if (height > width)
{
width = height;
}
}
Storage[] storage;
using (var bp = new UITexturePackerSpec(width, height, false))
{
storage = new Storage[textures.Length];
for (int i = 0; i < textures.Length; i++)
{
Texture2D tex = textures[i];
if (!tex)
{
continue;
}
Rect rect = new Rect();
int xPadding = 1;
int yPadding = 1;
for (xPadding = 1; xPadding >= 0; --xPadding)
{
for (yPadding = 1; yPadding >= 0; --yPadding)
{
rect = bp.Insert(tex.width + (xPadding * padding), tex.height + (yPadding * padding), heuristic);
if (rect.width > 0 && rect.height > 0)
{
break;
}
// After having no padding if it still doesn't fit -- increase texture size.
else if (xPadding == 0 && yPadding == 0)
{
return(PackTexturesSpec(texture, textures, width * (width <= height ? 2 : 1),
height * (height < width ? 2 : 1), padding, maxSize, heuristic));
}
}
if (rect.width > 0 && rect.height > 0)
{
break;
}
}
storage[i] = new Storage();
storage[i].rect = rect;
storage[i].paddingX = (xPadding != 0);
storage[i].paddingY = (yPadding != 0);
}
}
texture.Resize(width, height);
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
texture.SetPixel(i, j, new Color());
}
}
// The returned rects
Rect[] rects = new Rect[textures.Length];
for (int i = 0; i < textures.Length; i++)
{
Texture2D tex = textures[i];
if (!tex)
{
continue;
}
Rect rect = storage[i].rect;
int xPadding = (storage[i].paddingX ? padding : 0);
int yPadding = (storage[i].paddingY ? padding : 0);
Color[] colors = tex.GetPixels();
// Would be used to rotate the texture if need be.
if (rect.width != tex.width + xPadding)
{
Color[] newColors = tex.GetPixels();
for (int x = 0; x < rect.width; x++)
{
for (int y = 0; y < rect.height; y++)
{
int prevIndex = ((int)rect.height - (y + 1)) + x * (int)tex.width;
newColors[x + y * (int)rect.width] = colors[prevIndex];
}
}
colors = newColors;
}
texture.SetPixels((int)rect.x, (int)rect.y, (int)rect.width - xPadding, (int)rect.height - yPadding, colors);
rect.x /= width;
rect.y /= height;
rect.width = (rect.width - xPadding) / width;
rect.height = (rect.height - yPadding) / height;
rects[i] = rect;
}
texture.Apply();
return(rects);
}
public static Rect[] PackTexturesSpec(Texture2D texture, Texture2D[] textures, int width, int height, int padding, int maxSize, FreeRectChoiceHeuristic heuristic)
{
if (width > maxSize && height > maxSize) return null;
if (width > maxSize || height > maxSize) { int temp = width; width = height; height = temp; }
// Force square by sizing up
if (NGUISettings.forceSquareAtlas)
{
if (width > height)
height = width;
else if (height > width)
width = height;
}
Storage[] storage;
using (var bp = new UITexturePackerSpec(width, height, false))
{
storage = new Storage[textures.Length];
for (int i = 0; i < textures.Length; i++)
{
Texture2D tex = textures[i];
if (!tex) continue;
Rect rect = new Rect();
int xPadding = 1;
int yPadding = 1;
for (xPadding = 1; xPadding >= 0; --xPadding)
{
for (yPadding = 1; yPadding >= 0; --yPadding)
{
rect = bp.Insert(tex.width + (xPadding * padding), tex.height + (yPadding * padding), heuristic);
if (rect.width > 0 && rect.height > 0) break;
// After having no padding if it still doesn't fit -- increase texture size.
else if (xPadding == 0 && yPadding == 0)
{
return PackTexturesSpec(texture, textures, width * (width <= height ? 2 : 1),
height * (height < width ? 2 : 1), padding, maxSize, heuristic);
}
}
if (rect.width > 0 && rect.height > 0) break;
}
storage[i] = new Storage();
storage[i].rect = rect;
storage[i].paddingX = (xPadding != 0);
storage[i].paddingY = (yPadding != 0);
}
}
texture.Resize(width, height);
for (int i = 0; i < width; i++)
{
for (int j = 0; j < height; j++)
{
texture.SetPixel(i, j, new Color());
}
}
// The returned rects
Rect[] rects = new Rect[textures.Length];
for (int i = 0; i < textures.Length; i++)
{
Texture2D tex = textures[i];
if (!tex) continue;
Rect rect = storage[i].rect;
int xPadding = (storage[i].paddingX ? padding : 0);
int yPadding = (storage[i].paddingY ? padding : 0);
Color[] colors = tex.GetPixels();
// Would be used to rotate the texture if need be.
if (rect.width != tex.width + xPadding)
{
Color[] newColors = tex.GetPixels();
for (int x = 0; x < rect.width; x++)
{
for (int y = 0; y < rect.height; y++)
{
int prevIndex = ((int)rect.height - (y + 1)) + x * (int)tex.width;
newColors[x + y * (int)rect.width] = colors[prevIndex];
}
}
colors = newColors;
}
texture.SetPixels((int)rect.x, (int)rect.y, (int)rect.width - xPadding, (int)rect.height - yPadding, colors);
rect.x /= width;
rect.y /= height;
rect.width = (rect.width - xPadding) / width;
rect.height = (rect.height - yPadding) / height;
rects[i] = rect;
}
texture.Apply();
return rects;
}