private void pictureBox1_MouseDown(object sender, MouseEventArgs e)
{
bugPoint p = new bugPoint((float)e.X, (float)e.Y);
// a new point is created based on the point clicked by the user
UpdateList();
}
public Form1()
{
InitializeComponent();
// create c1 by using the default constructor
c1 = new bugCircle(); // unit cirlce
c1.Radius = 10.0;
c1.center.X = 5;
c1.center.Y = 10;
c1.name = " a cute circle ";
// create c2 and c3 by using the overloaded constructor
c2 = new bugCircle(-5.0, new Point(3, 3)); // another unit circle
c3 = new bugCircle(3.0, new Point(5, 4)); // yet another one
p1 = new bugPoint(); // locate at the origin
p2 = new bugPoint(3F, 4F);
p3 = new bugPoint(2F, 4F);
bugPoint p4; // = p2.Add(p3);
p4 = p2 + p3;
this.Text = p4.ToString();
this.Text += "dist " + p1.Distance2(p2).ToString();
this.Text += "ang = " + p2.SlopeWChoice(bugPoint.AngleType.Degree).ToString();
}
private void lBoxPoints_SelectedIndexChanged(object sender, EventArgs e)
{
// if an point is selected, dipslay its content in the text boxes
if (lBoxPoints.SelectedIndex >= 0)
{
bugPoint p = (bugPoint)lBoxPoints.SelectedItem;
tBoxX.Text = p.Location.X.ToString();
tBoxY.Text = p.Location.Y.ToString();
}
}
private void btnUpdate_Click(object sender, EventArgs e)
{
if (lBoxPoints.SelectedIndex >= 0)
{
bugPoint p = (bugPoint)lBoxPoints.SelectedItem;
float f = 0f;
if (float.TryParse(tBoxX.Text, out f))
{
p.Location.X = f;
}
if (float.TryParse(tBoxY.Text, out f))
{
p.Location.Y = f;
}
UpdateList();
}
}
/// <summary>
/// Overloaded constructor using a bugPoint object
/// </summary>
/// <param name="p">a bugPoint Object</param>
public bugPoint(bugPoint p)
{
Location = new PointF(p.Location.X, p.Location.Y);
}
/// <summary>
/// Compute the dot prodct between this and vector p
/// </summary>
/// <param name="p">vector p</param>
/// <returns></returns>
public float DotProduct(bugPoint p)
{
return(0F);
}
/// <summary>
/// Subtract vector p from this one
/// </summary>
/// <param name="p">vector to subtract</param>
/// <returns>resulting vector</returns>
public bugPoint Subtract(bugPoint p)
{
return(new bugPoint(this.Location.X - p.Location.X,
this.Location.Y - p.Location.Y)); // yet another stub
}
/// <summary>
/// Add vector p to this one
/// and return a new vector that represents the sum
/// </summary>
/// <param name="p">vector to add to this</param>
/// <returns>resulting vector</returns>
public bugPoint Add(bugPoint p)
{
return(new bugPoint(this.Location.X + p.Location.X,
this.Location.Y + p.Location.Y));
}
/// <summary>
/// Compute the distance between this point and point p
/// </summary>
/// <param name="p">distance to point p is to be computed</param>
/// <returns>distance in float</returns>
public float Distance2(bugPoint p)
{
return((float)Math.Sqrt(Math.Pow((double)(this.Location.X - p.Location.X), 2.0)
+ Math.Pow((double)(this.Location.Y - p.Location.Y), 2.0)));
}
/// <summary>
/// Overloaded constructor using a bugPoint object
/// </summary>
/// <param name="p">a bugPoint Object</param>
public bugPoint(bugPoint p)
{
Location = new PointF(p.Location.X, p.Location.Y); nPoints++; buglist.Add(this);
}