[2015][Quiz][Week07]Quiz04 - 40075040H

按我顯示

PinBoard

public class PinBoard
    {
        public int rows ;
        public int cols;
        public double xInterval;
        public double yInterval;
        public MyPoint[,] PinArray = null;
        public PinBoard(int row,int col,double deltaX,double deltaY)
        {
            rows = row ;
            cols = col;
            xInterval = deltaX;
            yInterval = deltaY;
        }
        public void createPins()
        {
            PinArray=new MyPoint[rows ,cols];
            for (int i = 0; i < rows ; i++)
                for (int j = 0; j < cols; j++)
                    PinArray[i, j] = new MyPoint();
        }
        public void setPinsPositions()
        {
            for(int i=0 ; i < rows ; i++)
                for(int j=0 ; j < cols ; j++)
                {
                    PinArray[i, j].x = xInterval * j;
                    PinArray[i, j].y = yInterval * i;
                }
        }
    }

Point

public class MyPoint
    {
        public double x;
        public double y;
        public double distanceTo(MyPoint p)
        {
            return (Math.Sqrt((x - p.x) * (x - p.x) + (y - p.y) * (y - p.y)));
        }
    }

Triangle

public class triangle
    { 
        public MyPoint[] PointArray = new MyPoint[3];
        public triangle(MyPoint p1,MyPoint p2,MyPoint p3)
        {
            PointArray[0] = p1;
            PointArray[1] = p2;
            PointArray[2] = p3;
        }
        public double distanceBetweenPoints(double x1,double y1,double x2,double y2)
        {
            return((Math.Sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2))));
        }
        public void setPointArray(MyPoint[] pArray)
        {
            for (int i = 0; i < 3; i++)
                pArray[i] = new MyPoint();
        }
        public double perimeter()
        {
            double s1 = PointArray[0].distanceTo(PointArray[1]);
            double s2 = PointArray[1].distanceTo(PointArray[2]);
            double s3 = PointArray[2].distanceTo(PointArray[0]);
            return s1 + s2 + s3;
        }
        public double area()
        {
            double s1 = PointArray[0].distanceTo(PointArray[1]);
            double s2 = PointArray[1].distanceTo(PointArray[2]);
            double s3 = PointArray[2].distanceTo(PointArray[0]);
            double s = (s1 + s2 + s3) / 2;
            return(Math.Sqrt(s*(s-s1)*(s-s2)*(s-s3)));
        }
        public bool isValid()
        {

            double s1 = PointArray[0].distanceTo(PointArray[1]);
            double s2 = PointArray[1].distanceTo(PointArray[2]);
            double s3 = PointArray[2].distanceTo(PointArray[0]);
            return ((s1 + s2 > s3) || (s3 + s2 > s1) || (s1 + s3 > s2));
        }
        public double radiusOfCircle()
        {
            double a = PointArray[0].distanceTo(PointArray[1]);
            double b = PointArray[1].distanceTo(PointArray[2]);
            double c = PointArray[2].distanceTo(PointArray[0]);
            double cosa=(b*b+c*c-a*a)/(2*b*c);
            double sina=Math.Sqrt(1-cosa*cosa);
            return 0.5*a/sina;
        }
    }

Forms

 public partial class Form1 : Form
    {
        public String mess;
        public PinBoard MyBoard;
        public triangle tri;
        public Random rnd=new Random();
        public Form1()
        {
            InitializeComponent();
        }

        private void btnGenerate_Click(object sender, EventArgs e)
        {
            MyBoard = new PinBoard(Convert.ToInt32(txtRow.Text), Convert.ToInt32(txtColumn.Text),Convert.ToDouble( txtXinterval.Text),Convert.ToDouble( txtYinterval.Text));
            MyBoard.createPins();
            MyBoard.setPinsPositions();
            txtP1Col.Text = rnd.Next( Convert.ToInt32(txtColumn.Text)).ToString();
            txtP2Col.Text = rnd.Next(Convert.ToInt32(txtColumn.Text)).ToString();
            txtP3Col.Text = rnd.Next(Convert.ToInt32(txtColumn.Text)).ToString();

            txtP1Row.Text = rnd.Next(Convert.ToInt32(txtRow.Text)).ToString();
            txtP2Row.Text = rnd.Next(Convert.ToInt32(txtRow.Text)).ToString();
            txtP3Row.Text = rnd.Next(Convert.ToInt32(txtRow.Text)).ToString();

            txtP1X.Text = (Convert.ToInt32(txtP1Col.Text) * MyBoard.xInterval).ToString();
            txtP2X.Text = (Convert.ToInt32(txtP2Col.Text) * MyBoard.xInterval).ToString();
            txtP3X.Text = (Convert.ToInt32(txtP3Col.Text) * MyBoard.xInterval).ToString();

            txtP1Y.Text = (Convert.ToInt32(txtP1Row.Text) * MyBoard.yInterval).ToString();
            txtP2Y.Text = (Convert.ToInt32(txtP2Row.Text) * MyBoard.yInterval).ToString();
            txtP3Y.Text = (Convert.ToInt32(txtP3Row.Text) * MyBoard.yInterval).ToString();
        }

        private void btnCalculate_Click(object sender, EventArgs e)
        {
            MyPoint P1=new MyPoint();
            MyPoint P2 = new MyPoint();
            MyPoint P3 = new MyPoint();
            P1.x = Convert.ToDouble(txtP1X.Text);
            P1.y = Convert.ToDouble(txtP1Y.Text);
            P2.x = Convert.ToDouble(txtP2X.Text);
            P2.y = Convert.ToDouble(txtP2Y.Text);
            P3.x = Convert.ToDouble(txtP3X.Text);
            P3.y = Convert.ToDouble(txtP3Y.Text);
            tri = new triangle(P1,P2,P3);
            mess+=Environment.NewLine;
            mess += "周長是:";
            mess += tri.perimeter().ToString();
            mess += (Environment.NewLine+"面積是:");
            mess += tri.area().ToString();
            mess += Environment.NewLine+"外接圓半徑是:";
            mess += tri.radiusOfCircle().ToString();
            txtDisplay.Text = mess;
        }
    }