public override bool DrawToAtlas(TextureAtlas atlas,AtlasLocation location){
// Only ever called with a static image:
Color32[] pixelBlock=Image.GetPixels32();
int index=0;
int atlasIndex=location.BottomLeftPixel();
// How many pixels must we add on to the end of the row to get to
// the start of the row above? This is RowPixelDelta:
int rowDelta=location.RowPixelDelta();
int height=Image.height;
int width=Image.width;
for(int h=0;h<height;h++){
for(int w=0;w<width;w++){
atlas.Pixels[atlasIndex++]=pixelBlock[index++];
}
atlasIndex+=rowDelta;
}
return true;
}
/// <summary>Creates a new location on the given atlas with the given size.</summary>
/// <param name="atlas">The atlas this location refers to.</param>
/// <param name="x">The x coordinate of the left edge of this location in pixels from the left.</param>
/// <param name="y">The y coordinate of the bototm edfe of this location in pixels from the bottom.</param>
/// <param name="width">The width of the location in pixels.</param>
/// <param name="height">The height of the location in pixels.</param>
public AtlasLocation(TextureAtlas atlas,int x,int y,int width,int height){
X=x;
Y=y;
Atlas=atlas;
Width=width;
Height=height;
Area=Width*Height;
// BakeUV isn't called here as its results will be always overriden when select calls it.
// As a result, empty locations have invalid UVs; this is ok.
}
/// <summary>Changes the font atlas used by the default material.</summary>
public void SetFontAtlas(TextureAtlas atlas){
Texture2D texture;
if(atlas==null){
texture=null;
}else{
texture=atlas.Texture;
}
Material.SetTexture("_Font",texture);
}
/// <summary>Sets the isolated state of this batch.</summary>
public void IsIsolated(DisplayableProperty property){
if(Isolated && Setup){
// No change.
return;
}
Setup=true;
Isolated=true;
FontAtlas=null;
GraphicsAtlas=null;
IsolatedProperty=property;
}
/// <summary>Sets the graphics atlas for this batch.</summary>
public void SetGraphicsAtlas(TextureAtlas graphics){
GraphicsAtlas=graphics;
Mesh.SetGraphicsAtlas(graphics);
}
/// <summary>Sets the font atlas for this batch.</summary>
public void SetFontAtlas(TextureAtlas font,float alias){
FontAtlas=font;
Mesh.SetFontAtlas(font);
Mesh.Material.SetFloat("TopFontAlias",Fonts.OutlineLocation+alias);
Mesh.Material.SetFloat("BottomFontAlias",Fonts.OutlineLocation-alias);
}
/// <summary>Sets the isolated state of this batch.</summary>
public void NotIsolated(TextureAtlas graphics,TextureAtlas font,float alias){
if(!Isolated && Setup){
return;
}
Setup=true;
Isolated=false;
IsolatedProperty=null;
Mesh.SetGlobalMaterial();
SetFontAtlas(font,alias);
SetGraphicsAtlas(graphics);
}
//--------------------------------------
/// <summary>Adds the given atlas to the top of this stack.</summary>
public void Add(TextureAtlas atlas){
atlas.Next=null;
atlas.Stack=this;
if(First==null){
atlas.Previous=null;
First=Last=atlas;
return;
}
atlas.Previous=Last;
Last=Last.Next=atlas;
}
//--------------------------------------
public bool DrawToAtlas(TextureAtlas atlas,AtlasLocation location){
// Only ever called with a static image:
Color32[] pixelBlock=Image.GetPixels32();
int index=0;
int atlasIndex=location.BottomLeftPixel();
int height=Image.height;
int width=Image.width;
// How many pixels must we add on to the end of the row to get to
// the start of the row above? This is simply the dimension of the atlas:
int rowDelta=atlas.Dimension;
for(int h=0;h<height;h++){
Array.Copy(pixelBlock,index,atlas.Pixels,atlasIndex,width);
index+=width;
atlasIndex+=rowDelta;
}
return true;
}
/// <summary>Sets a default material to this mesh.</summary>
public void SetGraphicsAtlas(TextureAtlas atlas){
Texture2D texture;
if(atlas==null){
texture=null;
}else{
texture=atlas.Texture;
}
Material.SetTexture("_Atlas",texture);
}
/// <summary>Sets up the current batch based on the isolation settings requested by a property.</summary>
/// <param name="property">The displayable property which wants the batch.</param>
/// <param name="fontTexture">The font texture to use with this batch.</param>
public void SetupBatch(DisplayableProperty property,TextureAtlas graphics,TextureAtlas font){
if(UI.MainCameraPool!=null && InWorldUI==null){
// This is the main UI and it also has a camera pool.
// Are we now attempting to create a batch on top of an inline camera?
// Let the camera pool check:
if(UI.MainCameraPool.CheckCameraRequired()){
// Clear the current batch - it can't be shared any further.
CurrentBatch=null;
}
}
if(property.Isolated){
if(property.GotBatchAlready){
// The property already got a batch on this layout - it doesn't need another.
return;
}
// Isolated properties always get a new batch every time.
CurrentBatch=UIBatchPool.Get(this);
if(CurrentBatch==null){
CurrentBatch=new UIBatch(this);
}
property.GotBatchAlready=true;
// And push it to the active stack:
AddBatch(CurrentBatch);
// Make sure it knows it's isolated:
CurrentBatch.IsIsolated(property);
}else{
if(CurrentBatch!=null && !CurrentBatch.Isolated){
// Re-use existing batch?
if(font!=null){
if(CurrentBatch.FontAtlas==null){
// Didn't have one assigned before. Assign now:
CurrentBatch.SetFontAtlas(font,FontAliasing);
}else if(font!=CurrentBatch.FontAtlas){
// Font atlas changed. Can't share.
CurrentBatch=null;
}
}
if(graphics!=null){
if(CurrentBatch.GraphicsAtlas==null){
// Didn't have one assigned before. Assign now:
CurrentBatch.SetGraphicsAtlas(graphics);
}else if(graphics!=CurrentBatch.GraphicsAtlas){
// Atlas changed. Can't share.
CurrentBatch=null;
}
}
if(CurrentBatch!=null){
// Yep - reuse it.
return;
}
}
// Pull a batch from the pool and set it to currentbatch. May need to generate a new one.
CurrentBatch=UIBatchPool.Get(this);
if(CurrentBatch==null){
CurrentBatch=new UIBatch(this);
}
// And push it to the active stack:
AddBatch(CurrentBatch);
// Make sure it knows it's not isolated:
CurrentBatch.NotIsolated(graphics,font,FontAliasing);
}
// Finally, prepare it for layout:
CurrentBatch.PrepareForLayout();
}
public TextureAtlas Create(){
// Create the atlas:
TextureAtlas atlas=new TextureAtlas(InitialSize,FilteringMode,Format);
atlas.Spacing=Spacing;
atlas.Mode=Mode;
Add(atlas);
return atlas;
}
/// <summary>Optimises the frames on this stack if it's needed.</summary>
public bool OptimiseIfNeeded()
{
if (!OptimizeRequested)
{
return(false);
}
OptimizeRequested = false;
TextureAtlas requiresOptimise = null;
TextureAtlas current = First;
while (current != null)
{
if (current.OptimizeRequested)
{
// Pop it out:
current.RemoveFromStack();
// And add it to our temp stack:
current.Next = requiresOptimise;
requiresOptimise = current;
}
current = current.Next;
}
if (requiresOptimise == null)
{
return(false);
}
Dictionary <int, AtlasLocation> allImages = ActiveImages;
// Next, for each one..
current = requiresOptimise;
while (current != null)
{
// Grab the next one:
TextureAtlas next = current.Next;
// Offload its images into the "remaining" stack. Note that we must retain the actual Location objects so we don't have to re-request/ re-generate all of them.
// If none fit, we re-add current as the new top of stack and add the images back onto it.
// Have we re-added current?
bool added = false;
// Next up, add them all back in, and that's it!
// The optimizing comes from them trying to fit in the smallest possible gap they can when added.
foreach (KeyValuePair <int, AtlasLocation> kvp in allImages)
{
AtlasLocation location = kvp.Value;
if (location.Atlas == current)
{
// Try adding to the stack:
TextureAtlas stackAtlas = Last;
bool noAdd = true;
while (stackAtlas != null)
{
// Try adding to the current frame:
if (stackAtlas.OptimiseAdd(location))
{
noAdd = false;
break;
}
stackAtlas = stackAtlas.Previous;
}
if (noAdd && !added)
{
added = true;
// Didn't fit in any of them! We now clear out the current atlas and re-add it like so:
Add(current);
// Ensure it's cleared:
current.Reset();
// Add to it instead:
current.OptimiseAdd(location);
}
}
}
if (!added)
{
// Destroy it:
current.Destroy();
}
current = next;
}
return(true);
}
/// <summary>Draws this image to the given atlas.</summary>
public virtual bool DrawToAtlas(TextureAtlas atlas,AtlasLocation location){
return false;
}
/// <summary>Require the given image on any atlas. Note that this may reject the requirement if the image is too big and isn't worthwhile on an atlas.</summary>
public AtlasLocation RequireImage(AtlasEntity image)
{
int entityID = image.GetAtlasID();
AtlasLocation result;
if (ActiveImages.TryGetValue(entityID, out result))
{
// Most calls fall through here.
return(result);
}
int width;
int height;
image.GetDimensionsOnAtlas(out width, out height);
if (width > InitialSize || height > InitialSize)
{
// Won't fit or is unsuitable for atlasing anyway.
return(null);
}
if (Last == null)
{
Create();
}
else
{
// Fast check - was this texture recently removed from any atlas?
// We might have the chance of restoring it.
// Their added at the back of the empty queue, so naturally, start at the end of the empty set
// and go back until we hit one with a null texture.
TextureAtlas currentAtlas = Last;
while (currentAtlas != null)
{
AtlasLocation currentE = currentAtlas.LastEmpty;
while (currentE != null)
{
if (currentE.Image == null)
{
// Nope! Shame.
break;
}
else if (currentE.AtlasID == entityID)
{
// Ace! Time to bring it back from the dead.
currentE.Select(image, width, height, Spacing);
ActiveImages[entityID] = currentE;
return(currentE);
}
currentE = currentE.EmptyBefore;
}
currentAtlas = currentAtlas.Previous;
}
}
// Push to top of stack:
result = Last.Add(image, entityID, width, height);
if (result != null)
{
return(result);
}
// Non-fitter - try fitting in lower stack frames:
TextureAtlas current = Last.Previous;
while (current != null)
{
result = current.Add(image, entityID, width, height);
if (result != null)
{
return(result);
}
current = current.Previous;
}
// Still not fitting! Create a new stack frame:
Create();
return(Last.Add(image, entityID, width, height));
}
/// <summary>Empties this atlas stack.</summary>
public void Clear(){
Last=null;
First=null;
// Clear all actives:
ActiveImages.Clear();
}