private void MyFunctionPicture_MouseUp(object sender, MouseEventArgs e)
{
chartPoint = new Point(-1, -1);
MyFunctionPicture.Invalidate();
Cursor = Cursors.Default;
InitializeMyFunction();
}
private void MyFunctionPicture_MouseMove(object sender, MouseEventArgs e)
{
if (chartPoint == new Point(-1, -1))
{
return;
}
int newY = e.Y;
if (newY < cartesianStart.Y - 255)
{
newY = cartesianStart.Y - 255;
}
if (newY > cartesianStart.Y)
{
newY = cartesianStart.Y;
}
for (int i = 0; i < myPoints.Count; i++)
{
if (myPoints[i] == chartPoint)
{
Point newPoint = new Point(myPoints[i].X, newY);
myPoints[i] = newPoint;
chartPoint = newPoint;
MyFunctionPicture.Invalidate();
return;
}
}
}
private void MyFunctionPicture_MouseDown(object sender, MouseEventArgs e)
{
chartPoint = GetPoint(new Point(e.X, e.Y));
if (chartPoint != new Point(-1, -1))
{
MyFunctionPicture.Invalidate();
Cursor = Cursors.SizeNS;
}
}