// The App class accepts its commands via constructor-injection
public App(CircleCommand circleCommand, TriangleCommand triangleCommand, SquareCommand squareCommand, NoneCommand noneCommand)
{
_circleCommand = circleCommand;
_triangleCommand = triangleCommand;
_squareCommand = squareCommand;
_noneCommand = noneCommand;
}
public ICommand EndStroke(Transform parent, Material mat)
{
string stripId = System.Guid.NewGuid().ToString();
// Reset Preview and Pass it's data to the new tube
TriangleCommand tc = new TriangleCommand(stripId, this, _preview.Vertices, _preview.Tris, _preview.Uvs, parent, mat);
_preview.Reset();
tc.Execute();
return(tc);
}
private bool _TryParseTriangle(CommandKind cmdKind, string[] argsText, out AbstractCommand cmd)
{
// здесь может некорректный формат команды
cmd = new BadCommand(this.currCmdText);
// команда работы с треугольником принимает лидо длины строн (3 аргумента),
// либо координаты вершин (6 аргументов)
if (argsText.Length != 3 && argsText.Length != 6)
return false;
TriangleCommand trnglCmd = null;
// создаём конкретную команду
switch (cmdKind)
{
case CommandKind.TRIANGLE_AREA:
trnglCmd = new TriangleAreaCommand();
break;
case CommandKind.TRIANGLE_PERIM:
trnglCmd = new TrianglePerimCommand();
break;
case CommandKind.TRIANGLE_IS_RIGHT:
trnglCmd = new TriangleIsRightCommand();
break;
case CommandKind.TRIANGLE_IS_EQUIL:
trnglCmd = new TriangleIsRightCommand();
break;
default:
Debug.Assert(false, "_TryParseTriangle must be called only for triangle commands");
break;
}
// инициализируем данными треугольника
if (argsText.Length == 3)
{
double[] sides;
if (!_TryParseTriangleSides(argsText, out sides))
return false;
trnglCmd.Init(sides);
}
else
{
Debug.Assert(argsText.Length == 6, "This case only for 6 args-coordinates");
Point[] vertices;
if (!_TryParseTriangleVertices(argsText, out vertices))
return false;
trnglCmd.Init(vertices);
}
cmd = trnglCmd;
return true;
}
