public Shape CreateShape(string description)
{
var shapeArgumentsHandler = new ShapeArgumentsHandler(description);
var shapeType = shapeArgumentsHandler.GetShapeType();
if (_actionMap.ContainsKey(shapeType))
{
return(_actionMap[shapeType](shapeArgumentsHandler));
}
throw new Exception($"can't found command {shapeType}");
}
private Shape CreateRectangle(ShapeArgumentsHandler argsHandler)
{
if (argsHandler.ArgumentsLeft < 4)
{
throw new ArgumentException("Invalid number of arguments to create rectangle", "rectangleArgs");
}
var leftTop = new Point(argsHandler.GetNextFloatArg(), argsHandler.GetNextFloatArg());
var rightBottom = new Point(argsHandler.GetNextFloatArg(), argsHandler.GetNextFloatArg());
var color = argsHandler.ShapeColor;
return(new Rectangle(leftTop, rightBottom, color));
}
Shape CreateRegularPolygon(ShapeArgumentsHandler argsHandler)
{
if (argsHandler.ArgumentsLeft < 4)
{
throw new ArgumentException("Invalid number of arguments to create polygon", "polygonArgs");
}
var vertexCount = argsHandler.GetNextIntArg();
var center = new Point(argsHandler.GetNextFloatArg(), argsHandler.GetNextFloatArg());
var radius = argsHandler.GetNextFloatArg();
var color = argsHandler.ShapeColor;
return(new RegularPolygon(vertexCount, center, radius, color));
}
Shape CreateEllipse(ShapeArgumentsHandler argsHandler)
{
if (argsHandler.ArgumentsLeft < 4)
{
throw new ArgumentException("Invalid number of arguments to create ellipse", "ellipseArgs");
}
var center = new Point(argsHandler.GetNextFloatArg(), argsHandler.GetNextFloatArg());
var horizontalRadius = argsHandler.GetNextFloatArg();
var verticalRadius = argsHandler.GetNextFloatArg();
var color = argsHandler.ShapeColor;
return(new Ellipse(center, horizontalRadius, verticalRadius, color));
}
Shape CreateTriangle(ShapeArgumentsHandler argsHandler)
{
if (argsHandler.ArgumentsLeft < 6)
{
throw new ArgumentException("Invalid number of arguments to create triangle", "triangleArgs");
}
var v1 = new Point(argsHandler.GetNextFloatArg(), argsHandler.GetNextFloatArg());
var v2 = new Point(argsHandler.GetNextFloatArg(), argsHandler.GetNextFloatArg());
var v3 = new Point(argsHandler.GetNextFloatArg(), argsHandler.GetNextFloatArg());
var color = argsHandler.ShapeColor;
return(new Triangle(v1, v2, v3, color));
}
