public void Run(IEnvironment env)
{
if (Value == null)
{
env.CreateIntermediate(Name, (int)W.Evaluate(env).Number, (int)H.Evaluate(env).Number);
}
else
{
IQueryValue value = new CanvasValue() {Canvas = Value.Evaluate(env).Canvas};
env.CreateVariable(Name, value);
}
}
public ICanvas CreateInput(string name)
{
if (_canvasLoader == null)
throw new InvalidOperationException("Cannot create new input canvas when the canvas loader is null");
if (name == null)
throw new ArgumentNullException("name", "Cannot use a null name for a canvas");
ICanvas canvas = _canvasLoader.LoadCanvas(name);
if (canvas == null)
throw new ArgumentException(string.Format("Received null canvas for \"{0}\"", name), "name");
CanvasValue value = new CanvasValue() {Canvas = canvas};
CreateVariable(canvas.Name, value);
_inputs.Add(canvas);
return canvas;
}
