private void pictureBox_MouseMove(object sender, MouseEventArgs e)
{
Point screenPoint = Cursor.Position;
Point graphPoint = pictureBox.PointToClient(screenPoint);
if ((graphPoint.X < 0) || (graphPoint.X > pictureBox.Width))
{
_isClicked = false;
Cursor.Current = Cursors.Arrow;
return;
}
if ((graphPoint.Y < 0) || (graphPoint.Y > pictureBox.Height))
{
_isClicked = false;
Cursor.Current = Cursors.Arrow;
return;
}
Projection projection = graphPainter.GraphList[0].projection;
if ((e.Button == MouseButtons.Left) && (_isClicked == false))
{
_isClicked = true;
_startPoint = graphPoint;
}
if ((e.Button == MouseButtons.Left) && (_isClicked == true))
{
Point stopPoint = graphPoint;
// No change in position happened, therefore no translation is required
int pixelDifference = stopPoint.X - _startPoint.X;
if (pixelDifference == 0)
{
return;
}
// Setting up hand cursor
Cursor.Current = Cursors.Hand;
float sensivity = 3.0f;
float difference = sensivity * (projection.ConvertScreenXToRealValue(stopPoint.X) - projection.ConvertScreenXToRealValue(_startPoint.X));
// Updating new X range based on difference
graphPainter.SetRangeX(Projection.XMin - difference, Projection.XMax - difference);
_isClicked = false;
_startPoint = stopPoint;
// positionPanel.Refresh();
return;
}
_isClicked = false;
}