public Texture2D this[ImageDescriptor index]
{
get
{
if(!_imageTable.ContainsKey(index))
{
Pattern pattern = _patternTable[index.Pattern].Value;
Color foreground = _colorTable[index.Foreground].Value;
Color background = _colorTable[index.Background].Value;
Texture2D texture = new Texture2D(_graphicsDevice, pattern.Columns, pattern.Data.Length);
Color[] data = new Color[pattern.Columns * pattern.Data.Length];
for(int y=0;y<pattern.Data.Length;++y)
{
for(int x=0;x<pattern.Columns;++x)
{
data[x + y * pattern.Columns] = ((pattern.Data[y] & ((uint)(1 << x))) > 0) ? foreground : background;
}
}
texture.SetData(data);
_imageTable[index] = texture;
}
return _imageTable[index];
}
}
public void RenderText(string text, int x, int y, string foreground, string background)
{
ImageDescriptor descriptor = new ImageDescriptor(null, foreground, background);
Encoding.ASCII.GetBytes(text)
.Select(c=>string.Format("character{0}",c))
.ToList()
.ForEach(imageName=>
{
descriptor.Pattern = imageName;
var texture = _images[descriptor];
_spriteBatch.Draw(texture, new Rectangle(x, y, texture.Width, texture.Height), Color.White);
x += texture.Width;
});
}