public override void OnMouseDown(int x, int y, System.Windows.Forms.MouseEventArgs e)
{
RgPoint P1 = mScreenDisplay.DisplayTransformation.ToUnit(new System.Drawing.PointF(x, y));
Carto.FetureLayer featurelyr = mMapCtrl.Map.CurrentLayer as Carto.FetureLayer;
if (featurelyr != null && featurelyr.ShapeType == RgEnumShapeType.RgPoint)
{
featurelyr.mGeometries.Add(P1);
}
mMapCtrl.Refresh();
}
public PointF ToScreen(RgPoint pt)
{
PointF transformedPoint = new PointF((float)pt.X, (float)pt.Y);
transformedPoint.Y = ScreenHeight() - transformedPoint.Y; //将Unit坐标系转换为屏幕坐标系，Y轴反向，此时Y坐标为屏幕坐标系坐标
transformedPoint.Y *= m_screenResolution * Zoom; //相对于屏幕原点放大
transformedPoint.X *= m_screenResolution * Zoom;
transformedPoint.X += m_panOffset.X + m_dragOffset.X;
transformedPoint.Y += m_panOffset.Y + m_dragOffset.Y;
return(transformedPoint);
}
