public static RPoint ToUnit(PointF screenpoint, UcMapControl mapCtrl)
{
float panoffsetX = mapCtrl.m_panOffset.X + mapCtrl.m_dragOffset.X;
float panoffsetY = mapCtrl.m_panOffset.Y + mapCtrl.m_dragOffset.Y;
float xpos = (screenpoint.X - panoffsetX) / (m_screenResolution * mapCtrl.Zoom);
float ypos = mapCtrl.ScreenHeight() - ((screenpoint.Y - panoffsetY)) / (m_screenResolution * mapCtrl.Zoom);
return(new RPoint(xpos, ypos, 0));
}
public static PointF ToScreen(RPoint pt, UcMapControl mapCtrl)
{
PointF transformedPoint = new PointF((float)pt.X, (float)pt.Y);
transformedPoint.Y = mapCtrl.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 * mapCtrl.Zoom; //相对于屏幕原点放大
transformedPoint.X *= m_screenResolution * mapCtrl.Zoom;
transformedPoint.X += mapCtrl.m_panOffset.X + mapCtrl.m_dragOffset.X;
transformedPoint.Y += mapCtrl.m_panOffset.Y + mapCtrl.m_dragOffset.Y;
return(transformedPoint);
}