求一画六边形的代码
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SF..不太清楚楼主说的到底什么意思`
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输出到哪？
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用DrawPolygon()方法可以绘制多边形，你只要提供六边形的顶点坐标就行了。
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这种代码网上很多的：
static const float pi = 3.14159265359;
//cos函数和sin函数的参数传递的是弧度，所以要把角度转换成弧度。
//正六边形需要计算的角度。
static const float fcos30 = cos((float)30/180*pi);
static const float fsin30 = sin((float)30/180*pi);
//正五边形和正六边形均需要计算的角度
static const float fcos90 = cos((float)90/180*pi);
static const float fsin90 = sin((float)90/180*pi);
//fR代表“外接圆半径”
//x向右为正（右边），反向为负（左边）
//y向下为正（下边），反向为负（上边）
//正五边形顶点画法
m_point[0].m_fx = fR*fcos18+m_point[8].m_fx;
m_point[0].m_fy = fR*(-fsin18)+m_point[8].m_fy;
m_point[1].m_fx = fR*fcos90+m_point[8].m_fx;
m_point[1].m_fy = fR*(-fsin90)+m_point[8].m_fy;
m_point[2].m_fx = fR*(-fcos18)+m_point[8].m_fx;
m_point[2].m_fy = fR*(-fsin18)+m_point[8].m_fy;
m_point[3].m_fx = fR*(-fcos54)+m_point[8].m_fx;
m_point[3].m_fy = fR*(fsin54)+m_point[8].m_fy;
m_point[4].m_fx = fR*(fcos54)+m_point[8].m_fx;
m_point[4].m_fy = fR*(fsin54)+m_point[8].m_fy;
int iStar = 5;
//正六边形顶点画法
m_point[0].m_fx = fR*fcos30+m_point[8].m_fx;
m_point[0].m_fy = fR*(-fsin30)+m_point[8].m_fy;
m_point[1].m_fx = fR*fcos90+m_point[8].m_fx;
m_point[1].m_fy = fR*(-fsin90)+m_point[8].m_fy;
m_point[2].m_fx = fR*(-fcos30)+m_point[8].m_fx;
m_point[2].m_fy = fR*(-fsin30)+m_point[8].m_fy;
m_point[3].m_fx = fR*(-fcos30)+m_point[8].m_fx;
m_point[3].m_fy = fR*(fsin30)+m_point[8].m_fy;
m_point[4].m_fx = fR*(fcos90)+m_point[8].m_fx;
m_point[4].m_fy = fR*(fsin90)+m_point[8].m_fy;
m_point[5].m_fx = fR*(fcos30)+m_point[8].m_fx;
m_point[5].m_fy = fR*(fsin30)+m_point[8].m_fy;
int iStar = 6;
//伪代码做顶点连线
for (int i=0;i <iStar;++i)
{
line(m_point[8].m_fx,m_point[8].m_fy,m_point[i].m_fx,m_point[i].m_fy);
if (i == (iStar-1))
{
line(m_point[i].m_fx,m_point[i].m_fy,m_point[0].m_fx,m_point[0].m_fy);
return ;
}
else
line(m_point[i].m_fx,m_point[i].m_fy,m_point[i+1].m_fx,m_point[i+1].m_fy);
}
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GDI+
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Dim image As Bitmap = New Bitmap(180, 196)
Dim axesFont As Font = New Font( "arial ", 15, FontStyle.Bold)
Dim blackBrush As Brush = New SolidBrush(Color.Black)
Dim g As Graphics = Graphics.FromImage(image)
Dim redPen As Pen = New Pen(Color.Red, 1)
Dim blackPen As Pen = New Pen(Color.Black, 1)
g.Clear(Color.White)
Dim Dx, Dy, Len, Hg
Dx = 1 : Dy = 1 : Len = 90 : Hg = Math.Sqrt(3) * Len / 2
Dim x1, y1, x2, y2, x3, y3, x4, y4, x5, y5, x6, y6 As Single
x1 = Dx : y1 = Dy - Len : x2 = Dx : y2 = Dy + Len
x3 = Dx - Hg : y3 = Dy - Len / 2 : x4 = Dx + Hg : y4 = Dy + Len / 2
x5 = Dx - Hg : y5 = Dy + Len / 2 : x6 = Dx + Hg : y6 = Dy - Len / 2
x1 += 100 : y1 += 100 : x2 += 100 : y2 += 100 : x3 += 100 : y3 += 100
x4 += 100 : y4 += 100 : x5 += 100 : y5 += 100 : x6 += 100 : y6 += 100
g.DrawLine(blackPen, x3, y3, x1, y1)
g.DrawLine(blackPen, x1, y1, x6, y6)