static void swap(TexturePosition[] textures, int i, int j)
{
TexturePosition temp = textures[i];
textures[i] = textures[j];
textures[j] = temp;
}
static void textureQuickSort(TexturePosition[] textures, int low, int high)
{
if (low < high) {
int pivot = partition(textures, low, high);
textureQuickSort(textures, low, pivot - 1);
textureQuickSort(textures, pivot + 1, high);
}
}
static void swap(TexturePosition[] textures, int i, int j)
{
TexturePosition temp = textures [i];
textures [i] = textures [j];
textures [j] = temp;
}
/**
* This function returns two variables:
-> The tecture atlas
-> An array of the old textures and their new positions. (Used for UV modification)
*/
public static Material combine(Material[] combines, out TexturePosition[] texturePositions, TextureAtlasInfo atlasInfo)
{
if (atlasInfo == null) {
Debug.LogError("atlasInfo is null. Try removing and reattaching combine children component");
texturePositions = null;
return null;
}
if (atlasInfo.shaderPropertiesToLookFor.Length <= 0) {
Debug.LogError("You need to enter some shader properties to look for into Atlas Info. Cannot combine with 0 properties");
texturePositions = null;
return null;
}
List<ShaderProperties> properties = new List<ShaderProperties>();
for (int i = 0; i < atlasInfo.shaderPropertiesToLookFor.Length; i++) {
if (combines [0].HasProperty(atlasInfo.shaderPropertiesToLookFor [i].propertyName)) {
properties.Add(atlasInfo.shaderPropertiesToLookFor [i]);
}
}
texturePositions = new TexturePosition[combines.Length];
for (int i = 0; i < combines.Length; i++) {
TexturePosition tempTexturePosition = new TexturePosition();
tempTexturePosition.textures = new Texture2D[properties.Count];
for (int j = 0; j < properties.Count; j++) {
//Debug.Log((combines[i].GetTexture(properties[j].propertyName) == null) + ", " + properties[j].propertyName + ", " + combines[i].name);
if (combines [i].GetTexture(properties [j].propertyName) == null) {
Debug.LogError("Cannot combine textures when using Unity's default material texture");
texturePositions = null;
return null;
}
tempTexturePosition.textures [j] = Object.Instantiate(combines [i].GetTexture(properties [j].propertyName)) as Texture2D;
tempTexturePosition.textures [j].name = tempTexturePosition.textures [j].name.Remove(tempTexturePosition.textures [j].name.IndexOf("(Clone)", System.StringComparison.Ordinal));
}
texturePositions [i] = tempTexturePosition;
}
textureQuickSort(texturePositions, 0, texturePositions.Length - 1);
for (int i = 0; i < texturePositions.Length; i++) {
for (int j = 1; j < texturePositions[i].textures.Length; j++) {
texturePositions [i].textures [j] = scaleTexture(texturePositions [i].textures [j], texturePositions [i].textures [0].width, texturePositions [i].textures [0].height);
}
}
texturePositions [0].position.x = texturePositions [0].position.y = 0;
texturePositions [0].position.width = texturePositions [0].textures [0].width;
texturePositions [0].position.height = texturePositions [0].textures [0].height;
int height = texturePositions [0].textures [0].height;
int width = texturePositions [0].textures [0].width;
int widthIndex = width;
int heightIndex = 0;
bool useHeightAsReference = true;
for (int i = 1; i < texturePositions.Length; i++) {
texturePositions [i].position.x = widthIndex;
texturePositions [i].position.y = heightIndex;
texturePositions [i].position.width = texturePositions [i].textures [0].width;
texturePositions [i].position.height = texturePositions [i].textures [0].height;
if (useHeightAsReference) {
if (widthIndex + texturePositions [i].textures [0].width > width) {
width = widthIndex + texturePositions [i].textures [0].width;
}
heightIndex += texturePositions [i].textures [0].height;
if (heightIndex >= height) {
useHeightAsReference = false;
height = heightIndex;
heightIndex = height;
widthIndex = 0;
}
} else {
if (heightIndex + texturePositions [i].textures [0].height > height) {
height = heightIndex + texturePositions [i].textures [0].height;
}
widthIndex += texturePositions [i].textures [0].width;
if (widthIndex >= width) {
useHeightAsReference = true;
width = widthIndex;
widthIndex = width;
heightIndex = 0;
}
}
}
if (height > width) {
width = height;
} else {
height = width;
}
float textureSizeFactor = 1.0f / height;
Material newMaterial = new Material(combines [0]);
for (int i = 0; i < properties.Count; i++) {
Texture2D combinesTextures = new Texture2D(width, height, (atlasInfo.ignoreAlpha && !properties [i].markAsNormal) ? TextureFormat.RGB24 : TextureFormat.ARGB32, true);
combinesTextures.anisoLevel = atlasInfo.anisoLevel;
combinesTextures.filterMode = atlasInfo.filterMode;
combinesTextures.wrapMode = atlasInfo.wrapMode;
for (int j = 0; j < texturePositions.Length; j++) {
combinesTextures.SetPixels((int)texturePositions [j].position.x, (int)texturePositions [j].position.y, texturePositions [j].textures [i].width, texturePositions [j].textures [i].height, texturePositions [j].textures [i].GetPixels());
}
combinesTextures.Apply();
if (atlasInfo.compressTexturesInMemory) {
combinesTextures.Compress(true);
}
newMaterial.SetTexture(properties [i].propertyName, combinesTextures);
}
for (int i = 0; i < texturePositions.Length; i++) {
texturePositions [i].position.x = texturePositions [i].position.x * textureSizeFactor;
texturePositions [i].position.y = texturePositions [i].position.y * textureSizeFactor;
texturePositions [i].position.width = texturePositions [i].position.width * textureSizeFactor;
texturePositions [i].position.height = texturePositions [i].position.height * textureSizeFactor;
}
return newMaterial;
}
static int partition(TexturePosition[] texturePositions, int low, int high)
{
TexturePosition pivot_item;
int pivotPosition = low;
pivot_item = texturePositions [pivotPosition];
for (int i = low + 1; i <= high; i++) {
if (texturePositions [i].textures [0].height > pivot_item.textures [0].height) {
pivotPosition++;
swap(texturePositions, pivotPosition, i);
}
}
swap(texturePositions, low, pivotPosition);
return pivotPosition;
}
/**
* This function returns two variables:
* -> The tecture atlas
* -> An array of the old textures and their new positions. (Used for UV modification)
*/
public static Material combine(Material[] combines, out TexturePosition[] texturePositions, TextureAtlasInfo atlasInfo)
{
if (atlasInfo == null)
{
Debug.LogError("atlasInfo is null. Try removing and reattaching combine children component");
texturePositions = null;
return(null);
}
if (atlasInfo.shaderPropertiesToLookFor.Length <= 0)
{
Debug.LogError("You need to enter some shader properties to look for into Atlas Info. Cannot combine with 0 properties");
texturePositions = null;
return(null);
}
List <ShaderProperties> properties = new List <ShaderProperties>();
for (int i = 0; i < atlasInfo.shaderPropertiesToLookFor.Length; i++)
{
if (combines[0].HasProperty(atlasInfo.shaderPropertiesToLookFor[i].propertyName) == true)
{
properties.Add(atlasInfo.shaderPropertiesToLookFor[i]);
}
}
texturePositions = new TexturePosition[combines.Length];
for (int i = 0; i < combines.Length; i++)
{
TexturePosition tempTexturePosition = new TexturePosition();
tempTexturePosition.textures = new Texture2D[properties.Count];
for (int j = 0; j < properties.Count; j++)
{
//Debug.Log((combines[i].GetTexture(properties[j].propertyName) == null) + ", " + properties[j].propertyName + ", " + combines[i].name);
if (combines[i].GetTexture(properties[j].propertyName) == null)
{
Debug.LogError("Cannot combine textures when using Unity's default material texture");
texturePositions = null;
return(null);
}
tempTexturePosition.textures[j] = GameObject.Instantiate(combines[i].GetTexture(properties[j].propertyName)) as Texture2D;
tempTexturePosition.textures[j].name = tempTexturePosition.textures[j].name.Remove(tempTexturePosition.textures[j].name.IndexOf("(Clone)"));
}
texturePositions[i] = tempTexturePosition;
}
textureQuickSort(texturePositions, 0, texturePositions.Length - 1);
for (int i = 0; i < texturePositions.Length; i++)
{
for (int j = 1; j < texturePositions[i].textures.Length; j++)
{
texturePositions[i].textures[j] = scaleTexture(texturePositions[i].textures[j], texturePositions[i].textures[0].width, texturePositions[i].textures[0].height);
}
}
texturePositions[0].position.x = texturePositions[0].position.y = 0;
texturePositions[0].position.width = texturePositions[0].textures[0].width;
texturePositions[0].position.height = texturePositions[0].textures[0].height;
int height = texturePositions[0].textures[0].height;
int width = texturePositions[0].textures[0].width;
int widthIndex = width;
int heightIndex = 0;
bool useHeightAsReference = true;
for (int i = 1; i < texturePositions.Length; i++)
{
texturePositions[i].position.x = widthIndex;
texturePositions[i].position.y = heightIndex;
texturePositions[i].position.width = texturePositions[i].textures[0].width;
texturePositions[i].position.height = texturePositions[i].textures[0].height;
if (useHeightAsReference)
{
if (widthIndex + texturePositions[i].textures[0].width > width)
{
width = widthIndex + texturePositions[i].textures[0].width;
}
heightIndex += texturePositions[i].textures[0].height;
if (heightIndex >= height)
{
useHeightAsReference = false;
height = heightIndex;
heightIndex = height;
widthIndex = 0;
}
}
else
{
if (heightIndex + texturePositions[i].textures[0].height > height)
{
height = heightIndex + texturePositions[i].textures[0].height;
}
widthIndex += texturePositions[i].textures[0].width;
if (widthIndex >= width)
{
useHeightAsReference = true;
width = widthIndex;
widthIndex = width;
heightIndex = 0;
}
}
}
if (height > width)
{
width = height;
}
else
{
height = width;
}
float textureSizeFactor = 1.0f / height;
Material newMaterial = new Material(combines[0]);
for (int i = 0; i < properties.Count; i++)
{
Texture2D combinesTextures = new Texture2D(width, height, (atlasInfo.ignoreAlpha && !properties[i].markAsNormal) ? TextureFormat.RGB24 : TextureFormat.ARGB32, true);
combinesTextures.anisoLevel = atlasInfo.anisoLevel;
combinesTextures.filterMode = atlasInfo.filterMode;
combinesTextures.wrapMode = atlasInfo.wrapMode;
for (int j = 0; j < texturePositions.Length; j++)
{
combinesTextures.SetPixels((int)texturePositions[j].position.x, (int)texturePositions[j].position.y, texturePositions[j].textures[i].width, texturePositions[j].textures[i].height, texturePositions[j].textures[i].GetPixels());
}
combinesTextures.Apply();
if (atlasInfo.compressTexturesInMemory == true)
{
combinesTextures.Compress(true);
}
newMaterial.SetTexture(properties[i].propertyName, combinesTextures);
}
for (int i = 0; i < texturePositions.Length; i++)
{
texturePositions[i].position.x = texturePositions[i].position.x * textureSizeFactor;
texturePositions[i].position.y = texturePositions[i].position.y * textureSizeFactor;
texturePositions[i].position.width = texturePositions[i].position.width * textureSizeFactor;
texturePositions[i].position.height = texturePositions[i].position.height * textureSizeFactor;
}
// Debug.Log("TexCU : " + newMaterial.GetTexture(properties[0].propertyName).name + " combines[0] :"+combines[0].name);
return(newMaterial);
}