private void DoPan(Point screenStart, Point screenEnd)
{
if (masterPlot != null)
{
double dx = IsHorizontalNavigationEnabled ?
masterPlot.XFromLeft(screenEnd.X) - masterPlot.XFromLeft(screenStart.X) : 0;
double dy = IsVerticalNavigationEnabled ?
masterPlot.YFromTop(screenEnd.Y) - masterPlot.YFromTop(screenStart.Y) : 0;
var rect = masterPlot.PlotRect;
double width = rect.Width;
double height = rect.Height;
if (IsDirectionInverted)
{
dy = -dy;
}
masterPlot.SetPlotRect(new DataRect(
rect.XMin - dx,
rect.YMin - dy,
rect.XMin - dx + width,
rect.YMin - dy + height));
masterPlot.IsAutoFitEnabled = false;
}
}
private void MouseNavigationLayer_MouseWheel(object sender, MouseWheelEventArgs e)
{
Point cursorPosition = e.GetPosition(this);
if (!CheckCursor(cursorPosition))
{
return;
}
//Zoom relative to mouse position
double factor = e.Delta < 0 ? 1.2 : 1 / 1.2;
Point mousePos = new Point(
masterPlot.XFromLeft(cursorPosition.X),
masterPlot.YFromTop(cursorPosition.Y));
DoZoom(factor, mousePos);
e.Handled = true;
}
