public static double perimeter(clsPoint xA, clsPoint xB, clsPoint xC)
{
double p;
p = (Space(xA, xB) + Space(xA, xC) + Space(xB, xC));
return(p);
}
public static double Howfar(clsPoint a, clsPoint b)
{
double result;
result = Math.Sqrt(Math.Pow(a.ix - b.ix, 2) + Math.Pow(a.iy - b.iy, 2));
return(result);
}
public static double area(clsPoint xA, clsPoint xB, clsPoint xC)
{
double p = perimeter(xA, xB, xC) / 2;
double area = Math.Sqrt(p * (p - Space(xA, xB)) * (p - Space(xA, xB)) * (p - Space(xB, xC)));
return(area);
}
public void Draw(clsPoint a, clsPoint b, clsPoint c)
{
using (Graphics g = panel1.CreateGraphics())
{
g.DrawLine(new Pen(Color.Black, 5), new Point(a.ix, a.iy), new Point(b.ix, b.iy));
g.DrawLine(new Pen(Color.Black, 5), new Point(c.ix, c.iy), new Point(b.ix, b.iy));
g.DrawLine(new Pen(Color.Black, 5), new Point(c.ix, c.iy), new Point(a.ix, a.iy));
}
}
void Button1Click(object sender, EventArgs e)
{
Refresh();
if (txtAx.Text == "" || txtAy.Text == "" || txtBx.Text == "" || txtBy.Text == "" || txtCx.Text == "" || txtCy.Text == "")
{
ClearData();
}
else
{
clsPoint a = new clsPoint();
clsPoint b = new clsPoint();
clsPoint c = new clsPoint();
a.ix = int.Parse(txtAx.Text);
a.iy = int.Parse(txtAy.Text);
b.iy = int.Parse(txtBy.Text);
b.ix = int.Parse(txtBx.Text);
c.ix = int.Parse(txtCx.Text);
c.iy = int.Parse(txtCy.Text);
Space(a, b, c);
txtPerimeter.Text = clsRectangle.perimeter(a, b, c).ToString();
txtArea.Text = clsRectangle.area(a, b, c).ToString();
Draw(a, b, c);
}
}
public void Space(clsPoint xA, clsPoint xB, clsPoint xC)
{
txtBC.Text = clsRectangle.Space(xB, xC).ToString();
txtAB.Text = clsRectangle.Space(xA, xB).ToString();
txtAC.Text = clsRectangle.Space(xA, xC).ToString();
}
public clsRectangle(clsPoint xA, clsPoint xB, clsPoint xC)
{
A = xA;
B = xB;
C = xC;
}
public static double Space(clsPoint xA, clsPoint xB)
{
return(Math.Sqrt(Math.Pow(xB.ix - xA.ix, 2) + Math.Pow(xB.iy - xA.iy, 2)));
}