private static void GraphCanvas_PointerWheelChanged(object?sender, PointerWheelEventArgs e)
{
Zoom = Math.Min(Math.Max(Zoom * (1 - 0.1 * e.Delta.Y), 0.001), 200);
TheMainWindow.FindControl <TextBlock>("tbInfo").Text = "Zoom: " + Math.Round(Zoom, 3).ToString();
UpdateCanvas(true);
}
//Изменение отображаемого значения графика функции в зависимости от позиции мыши
private static void GraphCanvas_PointerMoved(object?sender, PointerEventArgs e)
{
if (!mousePressed && expression != null)
{
TextBlock tbXCoord = TheMainWindow.FindControl <TextBlock>("tbXCoord");
TextBlock tbYCoord = TheMainWindow.FindControl <TextBlock>("tbYCoord");
var canvas = (Canvas)sender;
double x = (e.GetPosition(canvas).X - GraphWidth / 2 - Offset.X) * Zoom;
double y = rpn.GetNewRpnWithSetVariable(x).Calculate();
tbXCoord.Text = "x: " + Math.Round(x, 2).ToString();
tbYCoord.Text = "f(x): " + Math.Round(y, 2).ToString();
}
}
