private void 矢量数据重投影ToolStripMenuItem_Click(object sender, EventArgs e)
{
//选择投影变换图层
SelectLayer selFrm = new SelectLayer(mapControl);
selFrm.Text = "选择变换图层";
selFrm.label1.Text = "选择矢量图层";
selFrm.label2.Visible = false;
selFrm.comboBox2.Visible = false;
if (selFrm.ShowDialog(this) == DialogResult.OK)
{
int index = 0;
for (int i = 0; i < mapControl._MapLayers.Count(); i++)
{
if (mapControl._MapLayers[i].Name == selFrm.cb1)
{
index = i;
break;
}
}
//选择输出文件路径
SaveFileDialog sfd = new SaveFileDialog();
sfd.Title = "选择重投影文件存储路径";
sfd.Filter = @"shp(*.shp)|*.shp";
if (sfd.ShowDialog() == DialogResult.OK)
{
string path = sfd.FileName; //文件路径
string[] path2 = path.Split(new char[1] {
'\\'
}); //文件名
string name = path2[path2.Count() - 1];
//打开需转换矢量文件
DataSource ds = Ogr.Open(mapControl._MapLayers[index].FilePath, 0);
//投影转换
TransformProject transform = new TransformProject();
transform.TransformShp(ds, path);
//转换结果添加至地图
mapControl.AddShpLayer(path, name);
if (tVLayers.Nodes.Count == 0)
{
tVLayers.Nodes.Add("图层");
}
tVLayers.Nodes[0].Nodes.Insert(0, name);
tVLayers.ExpandAll();
tVLayers.SelectedNode = tVLayers.Nodes[0].Nodes[0];
MessageBox.Show("成功转换至Web墨卡托投影！", "投影转换结果");
}
}
}
private void 栅格数据重投影ToolStripMenuItem_Click(object sender, EventArgs e)
{
//选择投影变换图层
SelectLayer selFrm = new SelectLayer(mapControl);
selFrm.Text = "选择变换图层";
selFrm.label2.Text = "选择栅格图层";
selFrm.label1.Visible = false;
selFrm.comboBox1.Visible = false;
selFrm.label3.Visible = true;
selFrm.comboBox3.Visible = true;
selFrm.comboBox3.Items.Add("NearestNeighbour");
selFrm.comboBox3.Items.Add("Bilinear");
selFrm.comboBox3.Items.Add("Cubic");
selFrm.comboBox3.Items.Add("CubicSpline");
if (selFrm.ShowDialog(this) == DialogResult.OK)
{
int index = 0;
for (int i = 0; i < mapControl._MapLayers.Count(); i++)
{
if (mapControl._MapLayers[i].Name == selFrm.cb2)
{
index = i;
break;
}
}
//选择输出文件路径
SaveFileDialog sfd = new SaveFileDialog();
sfd.Title = "选择重投影文件存储路径";
sfd.Filter = @"Tiff(*.tif)|*.tif";
if (sfd.ShowDialog() == DialogResult.OK)
{
string path = sfd.FileName; //文件路径
string[] path2 = path.Split(new char[1] {
'\\'
}); //文件名
string name = path2[path2.Count() - 1];
//投影转换
TransformProject transform = new TransformProject();
float[] MBR = new float[4];
mapControl._MapLayers[index].GetExtent(MBR);
double[] dbx = { (double)MBR[0], (double)MBR[0], (double)MBR[2], (double)MBR[2] };
double[] dby = { (double)MBR[1], (double)MBR[3], (double)MBR[1], (double)MBR[3] };
Dataset ds = Gdal.Open(mapControl._MapLayers[index].FilePath, Access.GA_ReadOnly);
//重采样方式
ResampleAlg re = ResampleAlg.GRA_NearestNeighbour;
if (selFrm.cb3 == "Bilinear")
{
re = ResampleAlg.GRA_Bilinear;
}
else if (selFrm.cb3 == "Cubic")
{
re = ResampleAlg.GRA_Cubic;
}
else if (selFrm.cb3 == "CubicSpline")
{
re = ResampleAlg.GRA_CubicSpline;
}
transform.TransformTiff(ds, dbx, dby, path, re);
//转换结果添加至地图
mapControl.AddTiffLayer(path, name);
if (tVLayers.Nodes.Count == 0)
{
tVLayers.Nodes.Add("图层");
}
tVLayers.Nodes[0].Nodes.Insert(0, name);
tVLayers.ExpandAll();
tVLayers.SelectedNode = tVLayers.Nodes[0].Nodes[0];
MessageBox.Show("成功转换至Web墨卡托投影！", "投影转换结果");
}
}
}
