private void Area_Load(object sender, EventArgs e)
{
List <double> area = new List <double>();
ShapeFile.ReadShp rs = new ShapeFile.ReadShp();
rs.ReadShape(MainForm.filename);
if (MainForm.calflag == 1)
{
area = rs.CalArea();
}
else if (MainForm.calflag == 2)
{
area = rs.CalTrapezoid();
}
#region 设置datagridview的相关属性
dataGridView1.RowCount = area.Count; //行数
dataGridView1.ColumnCount = 2; //列数
dataGridView1.Columns[0].Width = 100; //第一列宽
dataGridView1.Columns[1].Width = 400; //第二列宽
dataGridView1.Columns[0].Name = "序号";
dataGridView1.Columns[1].Name = "面积";
#endregion
for (int i = 0; i < area.Count; i++)
{
this.dataGridView1[0, i].Value = (i + 1).ToString();
this.dataGridView1[1, i].Value = area[i];
}
}
private void 墨卡托投影反算ToolStripMenuItem_Click(object sender, EventArgs e)
{
pictureBox1.Refresh();
ShapeFile.ReadShp rs = new ShapeFile.ReadShp();
rs.ReadShape(filename);
Bitmap mi = rs.MercatorInverse(pictureBox1.DisplayRectangle);
merpolylist = rs.merpolylist;
this.pictureBox1.Image = mi;
}
//更改picturebox的大小，使其与主窗口变化一致
private void MainForm_Resize(object sender, EventArgs e)
{
Control control = (Control)sender;
this.pictureBox1.ClientSize = control.Size;
if (flag == 1)
{
pictureBox1.Invalidate();
ShapeFile.ReadShp rs = new ShapeFile.ReadShp();
rs.ReadShape(filename);
//Bitmap shp = rs.DrawShp(pictureBox1.DisplayRectangle);
shp = rs.DrawShp(pictureBox1.DisplayRectangle);
this.pictureBox1.Image = shp;
}
}
public List <List <List <PointF> > > merpolylist = new List <List <List <PointF> > >(); //原始多边形集合
private void shapefile文件ToolStripMenuItem_Click(object sender, EventArgs e)
{
pictureBox1.Refresh();
flag = 1;
OpenFileDialog ofd = new OpenFileDialog();//打开文件夹
ofd.Filter = "shapefile(*.shp)|*.shp|所有文件(*.*)|*.*";
if (ofd.ShowDialog() == DialogResult.OK)
{
filename = ofd.FileName;
ShapeFile.ReadShp rs = new ShapeFile.ReadShp();
rs.ReadShape(filename);
Bitmap shp = rs.DrawShp(pictureBox1.DisplayRectangle);
this.pictureBox1.Image = shp;
polylist = rs.polylist; //有值
merpolylist = rs.merpolylist; //无值
}
ofd.Dispose();
}