public IEnumerable<MouseDragAction> GetDrawInstructions(List<ColorSpot> colorPalette, IDictionary<string, string> options = null, IBrushChanger brushChanger = null)
{
if (!colorPalette.Any())
{
throw new ArgumentException("I need some colors. Give me some colors. Thanks!");
}
var output = new List<MouseDragAction>();
var colorPixels = colorPalette.ToDictionary(colorSpot => colorSpot, colorSpot => new List<Point>());
using (var bitmap = new Bitmap(_bitmapPath))
{
bitmap.LoopThroughPixels((point, color) =>
{
var selectedColor = colorPalette.OrderBy(c => c.Color.DifferenceTo(color)).FirstOrDefault();
if (selectedColor == null || !colorPixels.ContainsKey(selectedColor) ||
selectedColor.Color.DifferenceTo(Color.White) == 0)
{
return;
}
colorPixels[selectedColor].Add(point);
});
}
foreach (var colorPixel in colorPixels.Where(colorPixel => colorPixel.Value.Any()))
{
output.Add(new MouseDragAction(new List<Point> { colorPixel.Key.Point }, true, colorPixel.Key.Color));
var actions = colorPixel.Value.Select(point => new MouseDragAction(new List<Point> { point })).ToList();
if (options.GetBoolValueOrDefault("MixPoints", false))
{
actions = actions.Shuffle().ToList();
}
output.AddRange(actions);
}
return output.ToArray();
}
