/// <summary>
/// Searches for a particular texture info
/// </summary>
/// <param name="info"></param>
/// <returns></returns>
public AtlasNode FindNode(object userData)
{
if (mUserData == userData)
{
return(this);
}
AtlasNode node = null;
if (mLeft != null)
{
node = mLeft.FindNode(userData);
if (node != null)
{
return(node);
}
}
if (mRight != null)
{
node = mRight.FindNode(userData);
if (node != null)
{
return(node);
}
}
return(null);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="info"></param>
/// <param name="image"></param>
/// <param name="rectangle"></param>
public AtlasNode(object userData, Image image, Rectangle rectangle)
{
mUserData = userData;
mImage = image;
mRectangle = rectangle;
mLeft = null;
mRight = null;
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="info"></param>
/// <param name="image"></param>
/// <param name="rectangle"></param>
public AtlasNode(object userData, Image image, Rectangle rectangle)
{
mUserData = userData;
mImage = image;
mRectangle = rectangle;
mLeft = null;
mRight = null;
}
private void DisposeAtlasNode(AtlasNode node)
{
if (node == null)
return;
DisposeAtlasNode(node.mLeft);
DisposeAtlasNode(node.mRight);
FontBuilder.Glyph glyph = node.mUserData as FontBuilder.Glyph;
if (glyph != null && glyph.mBitmap != null)
{
glyph.mBitmap.Dispose();
if (node.mImage != glyph.mBitmap)
{
node.mImage.Dispose();
}
node.mImage = null;
glyph.mBitmap = null;
}
}
/// <summary>
/// Adds a new texture and image to a particular node
/// </summary>
/// <param name="info"></param>
/// <param name="image"></param>
/// <param name="node"></param>
/// <returns></returns>
private bool AddTexture(Image image, object userData, AtlasNode node)
{
if (node == null)
return false;
if (node.mUserData != null)
return false;
if (node.mLeft != null && node.mRight != null)
{
if (AddTexture(image, userData, node.mLeft))
return true;
if (AddTexture(image, userData, node.mRight))
return true;
return false;
}
if (node.mRectangle.Width < image.Width ||
node.mRectangle.Height < image.Height)
{
return false;
}
if (node.mRectangle.Width == image.Width &&
node.mRectangle.Height == image.Height)
{
node.mUserData = userData;
node.mImage = image;
return true;
}
int dw = node.mRectangle.Width - image.Width;
int dh = node.mRectangle.Height - image.Height;
if (dw > dh)
{
node.mLeft = new AtlasNode(null, null, new Rectangle(node.mRectangle.Left,
node.mRectangle.Top,
image.Width,
node.mRectangle.Height));
node.mRight = new AtlasNode(null, null, new Rectangle(node.mRectangle.Left + image.Width,
node.mRectangle.Top,
node.mRectangle.Width - image.Width,
node.mRectangle.Height));
}
else
{
node.mLeft = new AtlasNode(null, null, new Rectangle(node.mRectangle.Left,
node.mRectangle.Top,
node.mRectangle.Width,
image.Height));
node.mRight = new AtlasNode(null, null, new Rectangle(node.mRectangle.Left,
node.mRectangle.Top + image.Height,
node.mRectangle.Width,
node.mRectangle.Height - image.Height));
}
return AddTexture(image, userData, node.mLeft);
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="id"></param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="filename"></param>
public TextureAtlas(uint id, int width, int height, string filename)
{
mID = id;
mRoot = new AtlasNode(null, null, new Rectangle(0, 0, width, height));
mFilename = filename;
}
/// <summary>
/// Adds a new texture and image to a particular node
/// </summary>
/// <param name="info"></param>
/// <param name="image"></param>
/// <param name="node"></param>
/// <returns></returns>
private bool AddTexture(Image image, object userData, AtlasNode node)
{
if (node == null)
{
return(false);
}
if (node.mUserData != null)
{
return(false);
}
if (node.mLeft != null && node.mRight != null)
{
if (AddTexture(image, userData, node.mLeft))
{
return(true);
}
if (AddTexture(image, userData, node.mRight))
{
return(true);
}
return(false);
}
if (node.mRectangle.Width < image.Width ||
node.mRectangle.Height < image.Height)
{
return(false);
}
if (node.mRectangle.Width == image.Width &&
node.mRectangle.Height == image.Height)
{
node.mUserData = userData;
node.mImage = image;
return(true);
}
int dw = node.mRectangle.Width - image.Width;
int dh = node.mRectangle.Height - image.Height;
if (dw > dh)
{
node.mLeft = new AtlasNode(null, null, new Rectangle(node.mRectangle.Left,
node.mRectangle.Top,
image.Width,
node.mRectangle.Height));
node.mRight = new AtlasNode(null, null, new Rectangle(node.mRectangle.Left + image.Width,
node.mRectangle.Top,
node.mRectangle.Width - image.Width,
node.mRectangle.Height));
}
else
{
node.mLeft = new AtlasNode(null, null, new Rectangle(node.mRectangle.Left,
node.mRectangle.Top,
node.mRectangle.Width,
image.Height));
node.mRight = new AtlasNode(null, null, new Rectangle(node.mRectangle.Left,
node.mRectangle.Top + image.Height,
node.mRectangle.Width,
node.mRectangle.Height - image.Height));
}
return(AddTexture(image, userData, node.mLeft));
}
/// <summary>
/// Constructor
/// </summary>
/// <param name="id"></param>
/// <param name="width"></param>
/// <param name="height"></param>
/// <param name="filename"></param>
public TextureAtlas(uint id, int width, int height, string filename)
{
mID = id;
mRoot = new AtlasNode(null, null, new Rectangle(0, 0, width, height));
mFilename = filename;
}