高分求画五角星源代码，在线等待

Question

要求提供一个矩形，然后画出五角星，十个点的，可以填充的

Answer 1

using System.Drawing.Imaging;
public class _A : System.Web.UI.Page
{
private void Page_Load(object sender, System.EventArgs e)
{
// 在此处放置用户代码以初始化页面
Point[] pt=new Point[11];
pt[0]=new Point(0,12);
pt[1]=new Point(12,12);
pt[2]=new Point(16,0);
pt[3]=new Point(20,12);
pt[4]=new Point(32,12);
pt[5]=new Point(24,20);
pt[6]=new Point(26,32);
pt[7]=new Point(16,24);
pt[8]=new Point(6,32);
pt[9]=new Point(10,20);
pt[10]=new Point(0,12);
Bitmap bm=new Bitmap(75,75,PixelFormat.Format32bppArgb);
SChart chart=new SChart(bm,pt);
bm.Save("c:\\inetpub\\wwwroot\\test\\images\\chart.gif",ImageFormat.Gif);
//图片保存在能写的一个目录下;
}
}
//
public class SChart
{
public SChart(Bitmap bm,Point[] pt)
{
System.Drawing.Graphics g= Graphics.FromImage(bm);
Drawlines(g,pt);
}protected void Drawlines(System.Drawing.Graphics g,Point[] pt)
{
System.Drawing.SolidBrush b=new SolidBrush(Color.White);//新建画布清空
g.FillRectangle(b,0,0,75,75);//画图片区域
System.Drawing.Pen pen=new Pen(Color.Black);
g.DrawLines(pen,pt);//画线,楼主,你慢慢改成画区域的
}
}

Answer 2

http://www.codeproject.com/cs/miscctrl/cs_star_rating_control.asp

Answer 3

private void DrawStar(Graphics g, int center_x, int center_y, int inner_radius, int outer_radius, int number_of_arms, Color fillColor, Color outlineColor)
        {
            Brush fillBrush;
            Pen outlinePen = new Pen(outlineColor);
            fillBrush = new SolidBrush(fillColor);
    
            PointF[] p = new PointF[number_of_arms*2];            for (int i=0; i<number_of_arms; i++)
            {
                p[i*2].X = center_x + (float)Math.Cos(i*2*Math.PI/number_of_arms) * outer_radius;
                p[i*2].Y = center_y + (float)Math.Sin(i*2*Math.PI/number_of_arms) * outer_radius;
            }            for (int i=0; i<number_of_arms; i++)
            {
                p[i*2+1].X = center_x + (float)Math.Cos(i*2*Math.PI/number_of_arms + 2*Math.PI/(2*number_of_arms)) * inner_radius;
                p[i*2+1].Y = center_y + (float)Math.Sin(i*2*Math.PI/number_of_arms + 2*Math.PI/(2*number_of_arms)) * inner_radius;
            }                    g.FillPolygon(fillBrush, p);
            g.DrawPolygon(outlinePen, p);
        }for example: 
DrawStar(g, 100, 100, 12, 30, 5, Color.Yellow, Color.Orange);