public override void OnDraw(GraphicsDisplay disp)
{
if (!m_bStart)
{
return;
}
bool bDrawWFP = false;
if (bDrawWFP)
{
//用WPF绘制
Rect rect = disp.DT.FromMapWPF(Result);
disp.DrawingContext.DrawRectangle(null, new System.Windows.Media.Pen(System.Windows.Media.Brushes.Blue, 1), rect);
}
else
{
//如果用内核绘制
SimpleFillSymbol f = new SimpleFillSymbol(System.Drawing.Color.Transparent, System.Drawing.Color.Blue, 1);
Canvas c = disp.Canvas;
f.StartDrawing(disp);
f.Draw(new Envelope(Result));
f.EndDrawing();
disp.IncrementCanvasAction();
}
}
protected override bool BeforeDraw(GraphicsDisplay disp, RawPoint[] geoline, System.Windows.Point[] line)
{
Path p = new Path(geoline);
Geometry geo = p.GeodesicBuffer(100000, GeoStar.Core.BufferCapType.eBufferFlatCap, 0.001);
m_Sym.StartDrawing(disp);
m_Sym.Draw(geo);
m_Sym.EndDrawing();
disp.IncrementCanvasAction();
return(false);
}
