//scaling the chart
public ZoomAxisXY GetPointAB(double Axis_AX, double Axis_AY, double Axis_BX, double Axis_BY, double height, double distancePointAxisX, double distancePointAxisY, double scaleX, double scaleY, double ChangeScaleAxisX, double ChangeScaleAxisY)
{
if (double.IsNaN(Axis_AX) || double.IsNaN(Axis_AY) || double.IsNaN(Axis_BX) || double.IsNaN(Axis_BY) || double.IsNaN(height) || double.IsNaN(distancePointAxisX))
{
return(null);
}
if (double.IsNaN(distancePointAxisY) || double.IsNaN(scaleX) || double.IsNaN(scaleY) || double.IsNaN(ChangeScaleAxisX) || double.IsNaN(ChangeScaleAxisY))
{
return(null);
}
if (double.IsInfinity(Axis_AX) || double.IsInfinity(Axis_AY) || double.IsInfinity(Axis_BX) || double.IsInfinity(Axis_BY) || double.IsInfinity(height) || double.IsInfinity(distancePointAxisX))
{
return(null);
}
if (double.IsInfinity(distancePointAxisY) || double.IsInfinity(scaleX) || double.IsInfinity(scaleY) || double.IsInfinity(ChangeScaleAxisX) || double.IsInfinity(ChangeScaleAxisY))
{
return(null);
}
double Axis_A_X = 0;
double Axis_A_Y = 0;
double Axis_B_X = 0;
double Axis_B_Y = 0;
Axis_A_X = Axis_AX / distancePointAxisY;
Axis_A_Y = (height - Axis_AY) / distancePointAxisX;
Axis_B_X = Axis_BX / distancePointAxisY;
Axis_B_Y = (height - Axis_BY) / distancePointAxisX;
//rounding of variables
if (scaleX >= 1)
{
Axis_A_X = Math.Round(Axis_A_X, 1);
Axis_B_X = Math.Round(Axis_B_X, 1);
}
if (scaleY >= 1)
{
Axis_A_Y = Math.Round(Axis_A_Y, 1);
Axis_B_Y = Math.Round(Axis_B_Y, 1);
}
axis = new ZoomAxisXY()
{
//if the scale has changed, add the difference => the situation occurs after the second magnification of the chart, i.e. ChangeScaleAxis
Axis_AX = ChangeScaleAxisX + Axis_A_X,
Axis_BX = ChangeScaleAxisX + Axis_B_X,
Axis_AY = ChangeScaleAxisY + Axis_A_Y,
Axis_BY = ChangeScaleAxisY + Axis_B_Y
};
return(axis);
}
private void CharLegend_MouseLeftButtonUp(object sender, MouseButtonEventArgs e)
{
//if the toolbar is moved - do not scale the graph
if (changePositionToolbar)
{
return;
}
mouseIsDown = false;
mouseIsUP = true;
//reading the current cursor position ie the current "under the cursor" item
double pointX = e.GetPosition(this.CharDrawe).X;
double pointY = e.GetPosition(this.CharDrawe).Y;
double Axis_A_X = 0;
double Axis_A_Y = 0;
double Axis_B_X = 0;
double Axis_B_Y = 0;
if (pointX == x1 || pointY == y1)
{
//description if selecting the data on the chart is different than from the left corner to the right corner
Axis_A_X = x1; Axis_A_Y = y1;
Axis_B_X = x1 + x2; Axis_B_Y = y1 + y2;
}
else
{
Axis_A_X = x1; Axis_A_Y = y1;
Axis_B_X = pointX; Axis_B_Y = pointY;
}
using (MathXY mathPoint = new MathXY()){
zoomAxisXY = mathPoint.GetPointAB(Axis_A_X, Axis_A_Y, Axis_B_X, Axis_B_Y, heightChar, valueOsX, valueOsY, scalaX, scalaY, ChangeScaleAxisX, ChangeScaleAxisY);
if (zoomAxisXY == null)
{
return;
}
Axis_A_X = zoomAxisXY.Axis_AX;
Axis_A_Y = zoomAxisXY.Axis_AY;
Axis_B_X = zoomAxisXY.Axis_BX;
Axis_B_Y = zoomAxisXY.Axis_BY;
//change of scope
//the function is repeated 2x ==> DrawLineAndValue
if (Axis_B_X < Axis_A_X)
{
double Tmp_odX = Axis_A_X;
Axis_A_X = Axis_B_X;
Axis_B_X = Tmp_odX;
}
if (Axis_A_Y < Axis_B_Y)
{
double Tmp_odY = Axis_B_Y;
Axis_B_Y = Axis_A_Y;
Axis_A_Y = Tmp_odY;
}
//deleting the graph, i.e. the values of X and Y and the co-equivalents corresponding to them
Delete();
//drawing a new chart
DrawLineAndValue(Axis_B_X, Axis_A_Y, Axis_A_X, Axis_B_Y);
}
//if a graph is plotted on the graph
if (_Point.Count != 0)
{
AddNewPolyline();
//scaling the chart after all points
foreach (var v in _Point)
{
DravPolyline(v.Axis_X, v.Axis_Y);
}
CharDrawe.Children.Add(lineChar);
}
//removing a square from the chart
rectangleGeometry.Rect = new Rect(0, 0, 0, 0);
}
