private CoordPoint SrceenToGeo(PointF pt, ICoordinateTransform coordTran)
{
double prjX = 0, prjY = 0;
double geoX = 0, geoY = 0;
coordTran.Screen2Prj(pt.X, pt.Y, out prjX, out prjY);
coordTran.Prj2Geo(prjX, prjY, out geoX, out geoY);
return(new CoordPoint(geoX, geoY));
}
private void ToRasterPointF(ref PointF pt, ICanvas canvas)
{
ICoordinateTransform coordTran = canvas.CoordTransform;
//if (canvas.PrimaryDrawObject != null)//有活动影像是返回栅格坐标
//{
// float row = 0, col = 0;
// coordTran.Screen2Raster(pt.X, pt.Y, out row, out col);
// pt.X = col;
// pt.Y = row;
//}
//else//无活动影像时返回投影坐标
{
double prjX = 0, prjY = 0;
coordTran.Screen2Prj(pt.X, pt.Y, out prjX, out prjY);
pt.X = (float)prjX;
pt.Y = (float)prjY;
}
}
private PixelInfo GetPixelInfo(ICanvas canvas, int screenX, int screenY)
{
ICoordinateTransform coordTran = canvas.CoordTransform;
PixelInfo pInfo = new PixelInfo();
pInfo.ScreenX = screenX;
pInfo.ScreenY = screenY;
if (canvas.IsReverseDirection)
{
IReversedCoordinateTransform tran = canvas as IReversedCoordinateTransform;
tran.Screen2Prj(screenX, screenY, out pInfo.PrjX, out pInfo.PrjY);
tran.Screen2Raster((float)screenX, (float)screenY, out pInfo.RasterY, out pInfo.RasterX);
}
else
{
coordTran.Screen2Prj(screenX, screenY, out pInfo.PrjX, out pInfo.PrjY);
coordTran.Screen2Raster((float)screenX, (float)screenY, out pInfo.RasterY, out pInfo.RasterX);
}
//coordTran.Prj2Geo(pInfo.PrjX, pInfo.PrjY, out pInfo.GeoX, out pInfo.GeoY);
return(pInfo);
}