/// <summary>
/// This method fires when the x and y value has changed.
/// </summary>
/// <param name="e"> The point events. </param>
protected virtual void FireXYValueChanged(PointEventArgs e)
{
if (this.OnXYChanged != null)
{
this.OnXYChanged(this, e);
}
}
/// <summary>
/// This method zooms into the canvas.
/// </summary>
/// <param name="sender"> The object sender. </param>
/// <param name="e"> The start and end points. </param>
public void Zoom(object sender, PointEventArgs e)
{
double smallX = this.smallestXValue;
double widthY = 500D / ((double)this.BigestYValue - (double)this.SmallestYValue);
double widthX = 600D / ((double)this.BigestXValue - (double)this.SmallestXValue);
try
{
this.SmallestYValue = this.bigestYValue - (e.EndPoint.Y / widthY);
this.SmallestXValue = this.SmallestXValue + (e.StartPoint.X / widthX);
this.BigestYValue = this.BigestYValue - (e.StartPoint.Y / widthY);
this.BigestXValue = smallX + (e.EndPoint.X / widthX);
}
catch (Exception)
{
}
}