private void primitiveDrawingButton_Click(object sender, EventArgs e)
{
var drawingButton = (Button)sender;
var(drawingButtonText, newPrimitive, newPrimitiveDrawer) = GetPrimitiveContext(drawingButton, _primitivePoints);
if (_primitivePoints != null)
{
drawingButton.Text = drawingButtonText;
_primitive = newPrimitive;
_primitivePoints = null;
_primitiveDrawer.Draw(_canvasGraphics, _drawingPen, _primitive, _canvas);
return;
}
_primitiveDrawer = newPrimitiveDrawer;
_primitiveDrawer.ClearCanvas(_canvasGraphics, _canvas);
drawingButton.Text = "Рисование";
_primitive = null;
_primitivePoints = new List <Point>();
///this is peace of shit code
(string, Primitive, IPrimitiveDrawer) GetPrimitiveContext(Button drawingButton, List <Point> primitivePoints)
{
string drawingButtonText = null;
Primitive newPrimitive = null;
IPrimitiveDrawer newPrimitiveDrawer = null;
if (drawingButton == polygonDrawingButton)
{
if (primitivePoints != null)
{
drawingButtonText = "Многоугольник";
newPrimitive = new Polygon(primitivePoints);
}
else
{
newPrimitiveDrawer = new PolygonDrawer();
}
}
else if (drawingButton == edgeDrawingButton)
{
if (primitivePoints != null)
{
drawingButtonText = "Ребро";
newPrimitive = new Edge(primitivePoints);
}
else
{
newPrimitiveDrawer = new EdgeDrawer();
}
}
else
{
throw new ArgumentException();
}
return(drawingButtonText, newPrimitive, newPrimitiveDrawer);
}
///this is peace of shit code
(string, Primitive, IPrimitiveDrawer) GetPrimitiveContext2(Button drawingButton, List <Point> primitivePoints)
{
if (drawingButton != edgeDrawingButton && drawingButton != polygonDrawingButton)
{
throw new ArgumentException();
}
var(drawingButtonText, newPrimitive, newPrimitiveDrawer) = primitivePoints != null
? drawingButton == polygonDrawingButton
? ("Многоугольник", new Polygon(primitivePoints), (IPrimitiveDrawer)null)
: ("Ребро", (Primitive) new Edge(primitivePoints), (IPrimitiveDrawer)null)
: drawingButton == polygonDrawingButton
? ((string)null, (Primitive)null, (IPrimitiveDrawer) new PolygonDrawer())
: ((string)null, (Primitive)null, new EdgeDrawer());
return(drawingButtonText, newPrimitive, newPrimitiveDrawer);
}
}
