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;
canvas.CoordTransform.Screen2Prj(pt.X, pt.Y, out prjX, out prjY);
pt.X = (float)prjX;
pt.Y = (float)prjY;
}
}
private void EventPoint(object sender, enumCanvasEventType eventType, DrawingMouseEventArgs e)
{
if (eventType != enumCanvasEventType.MouseDown)
{
return;
}
GeometryOfDrawed geometry = new GeometryOfDrawed();
geometry.ShapeType = _pencilType.ToString();
ICoordinateTransform tran = (sender as ICanvas).CoordTransform;
float row = 0, col = 0;
tran.Screen2Raster(e.ScreenX, e.ScreenY, out row, out col);
geometry.RasterPoints = new PointF[] { new PointF(row, col) };
if (this._pencilDrawedResultFinished != null)
{
this._pencilDrawedResultFinished(geometry);
}
}
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);
}
private void NotifyResult(ICoordinateTransform coordTran, ICanvas canvas)
{
if (_pencilDrawedResultFinished == null)
{
return;
}
using (GraphicsPath path = GetGraphicsPath())
{
if (path == null)
{
return;
}
GeometryOfDrawed geometry = new GeometryOfDrawed();
geometry.ShapeType = _pencilType.ToString();
geometry.RasterPoints = path.PathData.Points;
//using (StreamWriter sw = new StreamWriter("F:\\1.txt", false, Encoding.Default))
//{
// for (int i = 0; i < geometry.RasterPoints.Length; i++)
// {
// sw.WriteLine(geometry.RasterPoints[i].ToString());
// }
//}
float row, col;
double prjY, prjX;
for (int i = 0; i < geometry.RasterPoints.Length; i++)
{
if (canvas.PrimaryDrawObject != null)//有活动影像是返回栅格坐标
{
coordTran.Screen2Raster(geometry.RasterPoints[i].X, geometry.RasterPoints[i].Y, out row, out col);
geometry.RasterPoints[i].X = col;
geometry.RasterPoints[i].Y = row;
}
else//无活动影像时返回投影坐标
{
canvas.CoordTransform.Screen2Prj(geometry.RasterPoints[i].X, geometry.RasterPoints[i].Y, out prjX, out prjY);
geometry.RasterPoints[i].X = (float)prjX;
geometry.RasterPoints[i].Y = (float)prjY;
geometry.IsPrjCoord = true;
}
}
//记录拐点(例如：海冰冰缘线绘制时使用)
if (_pencilType == enumPencilType.ControlFreeCurve && _controls.Count > 0)
{
geometry.ControlRasterPoints = new PointF[_controls.Count];
for (int i = 0; i < _controls.Count; i++)
{
if (canvas.PrimaryDrawObject != null)//有活动影像是返回栅格坐标
{
coordTran.Screen2Raster(_controls[i].X, _controls[i].Y, out row, out col);
geometry.ControlRasterPoints[i].X = col;
geometry.ControlRasterPoints[i].Y = row;
}
else//无活动影像时返回投影坐标
{
canvas.CoordTransform.Screen2Prj(_controls[i].X, _controls[i].Y, out prjX, out prjY);
geometry.ControlRasterPoints[i].X = (float)prjX;
geometry.ControlRasterPoints[i].Y = (float)prjY;
geometry.IsPrjCoord = true;
}
}
}
//
geometry.Types = path.PathData.Types;
_pencilDrawedResultFinished(geometry);
}
}
