private void button2_Click(object sender, EventArgs e)
{
radioButton1.Checked = true;
IScreenDisplay display = frmRotate_active.ScreenDisplay;
display.TrackRotate();
IDisplayTransformation trans = display.DisplayTransformation;
comboBox1.Text = Math.Round(trans.Rotation, 2).ToString();
}
private void axMapControl1_OnMouseDown(object sender, ESRI.ArcGIS.Controls.IMapControlEvents2_OnMouseDownEvent e)
{
//旋转
if (frm_Rotate.flag == 1)
{
IScreenDisplay display = axMapControl1.ActiveView.ScreenDisplay;
display.TrackRotate();
}
//裁剪
if (Is_clip == true)
{
IRgbColor pcolor = new RgbColorClass();
pcolor.Red = 255;
pcolor.Blue = 0;
pcolor.Green = 255;
ISimpleFillSymbol linesymbol = new SimpleFillSymbolClass();
linesymbol.Color = pcolor;
//ISymbol symbol = linesymbol as ISymbol;
object symbol = linesymbol;
IGeometry geom = axMapControl1.TrackPolygon();
//IScreenDisplay display = axMapControl1.ActiveView.ScreenDisplay;
//display.StartDrawing(display.hDC, (short)esriScreenCache.esriAllScreenCaches);
//display.SetSymbol(symbol);
//display.DrawPolygon(geom);
//display.FinishDrawing();
axMapControl1.DrawShape(geom, ref symbol);
//方法一
IRasterLayer rasterlayer = axMapControl1.get_Layer(0) as IRasterLayer;
IGeoDataset geodataset = rasterlayer as IGeoDataset;
geom.SpatialReference = geodataset.SpatialReference;
RasterClip(rasterlayer, geom as IPolygon);
Is_clip = false;
axMapControl1.ActiveView.PartialRefresh(esriViewDrawPhase.esriViewForeground, null, null);
}
}