private void btnCalculate_Click(object sender, EventArgs e)
{
TriangleCalculator calc;
float _AB, _BC, _AC, _A, _B, _C;
_AB = (!txtAB.ReadOnly) ? Parse(txtAB.Text) : 0;
_BC = (!txtBC.ReadOnly) ? Parse(txtBC.Text) : 0;
_AC = (!txtAC.ReadOnly) ? Parse(txtAC.Text) : 0;
_A = (!txtA.ReadOnly) ? Parse(txtA.Text) : 0;
_B = (!txtB.ReadOnly) ? Parse(txtB.Text) : 0;
_C = (!txtC.ReadOnly) ? Parse(txtC.Text) : 0;
txtAB.Text = (_AB != 0) ? _AB.ToString() : "";
txtBC.Text = (_BC != 0) ? _BC.ToString() : "";
txtAC.Text = (_AC != 0) ? _AC.ToString() : "";
txtA.Text = (_A != 0) ? _A.ToString() : "";
txtB.Text = (_B != 0) ? _B.ToString() : "";
txtC.Text = (_C != 0) ? _C.ToString() : "";
try
{
switch (cmbType.SelectedIndex)
{
case 1:
calc = new TriangleCalculator(ItemsType.AB_BC_A, _AB, _BC, _A);
break;
case 2:
calc = new TriangleCalculator(ItemsType.AB_BC_B, _AB, _BC, _B);
break;
case 3:
calc = new TriangleCalculator(ItemsType.AB_BC_C, _AB, _BC, _C);
break;
case 4:
calc = new TriangleCalculator(ItemsType.BC_AC_A, _BC, _AC, _A);
break;
case 5:
calc = new TriangleCalculator(ItemsType.BC_AC_B, _BC, _AC, _B);
break;
case 6:
calc = new TriangleCalculator(ItemsType.BC_AC_C, _BC, _AC, _C);
break;
case 7:
calc = new TriangleCalculator(ItemsType.AB_AC_A, _AB, _AC, _A);
break;
case 8:
calc = new TriangleCalculator(ItemsType.AB_AC_B, _AB, _AC, _B);
break;
case 9:
calc = new TriangleCalculator(ItemsType.AB_AC_C, _AB, _AC, _C);
break;
case 10:
calc = new TriangleCalculator(ItemsType.AB_A_B, _AB, _A, _B);
break;
case 11:
calc = new TriangleCalculator(ItemsType.AB_B_C, _AB, _B, _C);
break;
case 12:
calc = new TriangleCalculator(ItemsType.AB_A_C, _AB, _A, _C);
break;
case 13:
calc = new TriangleCalculator(ItemsType.BC_A_B, _BC, _A, _B);
break;
case 14:
calc = new TriangleCalculator(ItemsType.BC_B_C, _BC, _B, _C);
break;
case 15:
calc = new TriangleCalculator(ItemsType.BC_A_C, _BC, _A, _C);
break;
case 16:
calc = new TriangleCalculator(ItemsType.AC_A_B, _AC, _A, _B);
break;
case 17:
calc = new TriangleCalculator(ItemsType.AC_B_C, _AC, _B, _C);
break;
case 18:
calc = new TriangleCalculator(ItemsType.AC_A_C, _AC, _A, _C);
break;
default:
calc = new TriangleCalculator(ItemsType.AB_BC_AC, _AB, _BC, _AC);
break;
}
calc.AmbigiousObtuse = chkAmbigious.Checked;
calc.CalculateTriangle();
}
catch (Exception ex)
{
MessageBox.Show(this, ex.Message, this.Text, MessageBoxButtons.OK, MessageBoxIcon.Exclamation);
return;
}
txtA.Text = Math.Round(calc.AngleA, Convert.ToInt32(numDigits.Value)).ToString();
txtAB.Text = Math.Round(calc.SideAB, Convert.ToInt32(numDigits.Value)).ToString();
txtBC.Text = Math.Round(calc.SideBC, Convert.ToInt32(numDigits.Value)).ToString();
txtAC.Text = Math.Round(calc.SideAC, Convert.ToInt32(numDigits.Value)).ToString();
txtA.Text = Math.Round(calc.AngleA, Convert.ToInt32(numDigits.Value)).ToString();
txtB.Text = Math.Round(calc.AngleB, Convert.ToInt32(numDigits.Value)).ToString();
txtC.Text = Math.Round(calc.AngleC, Convert.ToInt32(numDigits.Value)).ToString();
txtPerimeter.Text = Math.Round(calc.Perimeter, Convert.ToInt32(numDigits.Value)).ToString();
txtArea.Text = Math.Round(calc.Area, Convert.ToInt32(numDigits.Value)).ToString();
if ((chkMedian.Checked == false))
{
txtAltidudeAB.Text = Math.Round(calc.Height(Bases.AB), Convert.ToInt32(numDigits.Value)).ToString();
txtAltidudeBC.Text = Math.Round(calc.Height(Bases.BC), Convert.ToInt32(numDigits.Value)).ToString();
txtAltidudeAC.Text = Math.Round(calc.Height(Bases.AC), Convert.ToInt32(numDigits.Value)).ToString();
}
else
{
txtAltidudeAB.Text = Math.Round(calc.Median(Bases.AB), Convert.ToInt32(numDigits.Value)).ToString();
txtAltidudeBC.Text = Math.Round(calc.Median(Bases.BC), Convert.ToInt32(numDigits.Value)).ToString();
txtAltidudeAC.Text = Math.Round(calc.Median(Bases.AC), Convert.ToInt32(numDigits.Value)).ToString();
}
DrawingData = new TriangleData(calc);
DrawingData.Altitudes = !chkMedian.Checked;
this.bitmap = DrawingData.Draw((Panel1.Height - 2));
this.Refresh();
}
public TriangleData(TriangleCalculator calc)
{
this.Angles = new AnglesData();
this.Altitudes = true;
this.Angles.Right = Angle.None;
this.Angles.Rotation = 0;
this.Angles.Scale = 1;
float max = Math.Max(Math.Max(calc.SideAB, calc.SideBC), calc.SideAC);
float myAB, myBC, myAC, myArea;
myAB = calc.SideAB / max;
myBC = calc.SideBC / max;
myAC = calc.SideAC / max;
myArea = calc.Area / max / max;
//------------------------------------------------------
//distance from point C to side AB
float CD = 2 * myArea / myAB;
//distance from point A to side BC
float AE = 2 * myArea / myBC;
//distance from point B to side AC
float BF = 2 * myArea / myAC;
//distance from point A to the height (assuming it is from C)
float AD = myAB - (float)Math.Cos(calc.RadB) * myBC;
this.Angles.radiusA = (0.4f * AE);
this.Angles.radiusB = (0.4f * BF);
this.Angles.radiusC = (0.4f * CD);
this.offsetX = (AD < 0) ? (-AD) : 0;
this.PosA = new PointF(0, (CD));
this.PosB = new PointF((myAB), (CD));
this.PosC = new PointF((AD), 0);
if (2 * calc.RadA == PI)
{
this.Angles.Right = Angle.A;
}
else if (2 * calc.RadB == PI)
{
this.Angles.Right = Angle.B;
}
else if (2 * calc.RadC == PI)
{
this.Angles.Right = Angle.C;
this.Angles.Rotation = (calc.AngleB);
}
else
{
this.Angles.Right = Angle.None;
}
if (this.Angles.Right == Angle.C || this.Angles.Right == Angle.None)
{
this.PosD = new PointF((AD), (CD));
}
if (this.Angles.Right == Angle.A || this.Angles.Right == Angle.None)
{
float CosEAB = (AE / myAB);
float SinEAB = (float)Math.Sqrt((1 - (CosEAB * CosEAB)));
if (((2 * calc.RadB) > PI))
{
SinEAB = (SinEAB * -1);
}
this.PosE = new PointF(((CosEAB * AE)), ((CD - (SinEAB * AE))));
}
if (this.Angles.Right == Angle.B || this.Angles.Right == Angle.None)
{
float CosFBA = (BF / myAB);
float SinFBA = (float)Math.Sqrt((1
- (CosFBA * CosFBA)));
if (((2 * calc.RadA) > PI))
{
SinFBA = (SinFBA * -1);
}
this.PosF = new PointF((myAB - (CosFBA * BF)), (CD - (SinFBA * BF)));
}
float y = Math.Min(this.PosF.Y, this.PosE.Y);
this.offsetY = (y < 0) ? -y : 0;
}
