public ImageAtlasPage(String textureName, String groupName, int width, int height)
{
rootNode = new ImagePackTreeNode(new Size(width, height));
texture = TextureManager.getInstance().createManual(textureName, groupName, TextureType.TEX_TYPE_2D, (uint)width, (uint)height, 1, 0, OgrePlugin.PixelFormat.PF_A8R8G8B8, TextureUsage.TU_STATIC_WRITE_ONLY, null, false, 0);
bufferPtr = texture.Value.getBuffer();
this.TextureName = textureName;
this.GroupName = groupName;
}
public ImagePackTreeNode insert(String imageID, FreeImageBitmap img)
{
//If not a leaf and both children are full
if (!IsLeaf)
{
ImagePackTreeNode newNode = children[0].insert(imageID, img);
if (newNode != null)
{
return(newNode);
}
return(children[1].insert(imageID, img));
}
else
{
//If there is already an image, return
if (this.imageID != null)
{
return(null);
}
Rectangle imageRect = new Rectangle(rc.Left, rc.Top, img.Width, img.Height);
//If the area is too small return
if (rc.Width < imageRect.Width || rc.Height < imageRect.Height)
{
return(null);
}
//If were just right accept
if (rc.Width == imageRect.Width && rc.Height == imageRect.Height)
{
this.imageID = imageID;
return(this);
}
//Otherwise gotta split this node and create some kids
this.children[0] = new ImagePackTreeNode();
this.children[1] = new ImagePackTreeNode();
int dw = rc.Width - imageRect.Width;
int dh = rc.Height - imageRect.Height;
if (dw > dh)
{
children[0].rc = new Rectangle(rc.Left, rc.Top, imageRect.Width, rc.Height);
children[1].rc = new Rectangle(rc.Left + imageRect.Width, rc.Top, rc.Width - imageRect.Width, rc.Height);
}
else
{
children[0].rc = new Rectangle(rc.Left, rc.Top, rc.Width, imageRect.Height);
children[1].rc = new Rectangle(rc.Left, rc.Top + imageRect.Height, rc.Width, rc.Height - imageRect.Height);
}
return(children[0].insert(imageID, img));
}
}
/// <summary>
/// Add an image to this page, will return true if the image was sucessfully added to the page.
/// </summary>
/// <param name="name"></param>
/// <param name="image"></param>
/// <returns></returns>
internal unsafe bool addImage(String name, FreeImageBitmap image)
{
ImagePackTreeNode node = rootNode.insert(name, image);
if (node != null)
{
using (PixelBox pixelBox = new PixelBox(0, 0, image.Width, image.Height, OgreDrawingUtility.getOgreFormat(image.PixelFormat), image.GetScanlinePointer(0).ToPointer()))
{
Rectangle locationRect = node.LocationRect;
bufferPtr.Value.blitFromMemory(pixelBox, new IntRect(locationRect.Left, locationRect.Top, locationRect.Right, locationRect.Bottom));
imageInfo.Add(name, node);
}
return(true);
}
else
{
return(false);
}
}