public void Run(IEnvironment env)
{
ICanvas canvas = env.GetVariable(CanvasName).Canvas;
Selection.Execute(env);
Unit[] units = Selection.Results();
CanvasSelectionEnvironment canvasEnv = new CanvasSelectionEnvironment(env, canvas);
foreach (var unit in units)
{
canvasEnv.X = unit.X;
canvasEnv.Y = unit.Y;
int x = XManipulation == null ? unit.X : (int) XManipulation.Evaluate(canvasEnv).Number;
int y = YManipulation == null ? unit.Y : (int) YManipulation.Evaluate(canvasEnv).Number;
canvas[x, y] = unit.Color;
}
}
public void Execute(IEnvironment env)
{
if (Manipulation == null)
{
throw new ArgumentException("Manipulation expression cannot be null", "Manipulation");
}
if (Canvas == null)
{
throw new ArgumentException("Color cannot be null", "Canvas");
}
ICanvas canvas = Canvas.Evaluate(env).Canvas;
_units = new ConcurrentBag<Unit>();
if (env.Settings.AllowParallel)
{
_countdown = new CountdownEvent(canvas.Width*canvas.Height);
}
for (int y = 0; y < canvas.Height; ++y)
{
for (int x = 0; x < canvas.Width; ++x)
{
CanvasSelectionEnvironment canvasEnv = new CanvasSelectionEnvironment(env, canvas);
canvasEnv.X = x;
canvasEnv.Y = y;
if (env.Settings.AllowParallel)
{
ThreadPool.QueueUserWorkItem(Worker, canvasEnv);
}
else
{
Worker(canvasEnv);
}
}
}
if (env.Settings.AllowParallel)
{
_countdown.Wait();
_countdown.Dispose();
}
}
