/// <summary>
/// 生成多边形的同时将其画出来
/// </summary>
/// <param name="vertex">最新要插入的顶点</param>
/// <param name="color">当前边的颜色</param>
public void drawPolygon(Point vertex, Color color)
{
if (curPolygon == null)
{
curPolygon = new CG_Polygon(vertex, color);
}
else
{
if (curPolygon.nVertex > 0)
{
Point prep = curPolygon.getLast();
if (curPolygon.addVertex(vertex) == true)
{
drawLine_Bresenham(prep, vertex, color);
}
else
{
MessageBox.Show("加入的顶点不合法！");
}
}
else
{
curPolygon.addVertex(vertex);
}
}
}
