public static int GetUtmZone(UtmPosition position)
{
if (position.Zone == 0) // lat / long
{
return(GetUtmZone(position.Northing, position.Easting));
}
else
{
return(GetUtmZone(position.TransformToWGS()));
}
}
private void DrawLatLongGrid(Graphics vGraphics, UtmPosition pOrigoUtm33, UtmPosition pBottomRightUtm33, float pZoom, SizeF vLabelRectSize)
{
var vOrigoWGS = pOrigoUtm33.TransformToWGS();
var vBottomRigthWGS = pBottomRightUtm33.TransformToWGS();
var vBottomLeftWGS = new UtmPosition(0, pOrigoUtm33.Easting, pBottomRightUtm33.Northing).TransformToWGS();
var vTopRightWGS = new UtmPosition(0, pBottomRightUtm33.Easting, pOrigoUtm33.Northing).TransformToWGS();
double vStartEasting = Math.Min(vOrigoWGS.Easting, vBottomLeftWGS.Easting);
vStartEasting = Math.Floor(vStartEasting / 0.1) * 0.1;
double vEndEasting = Math.Max(vTopRightWGS.Easting, vBottomRigthWGS.Easting);
vEndEasting = Math.Ceiling(vEndEasting / 0.1) * 0.1;
double vStartNorthing = Math.Min(vBottomLeftWGS.Northing, vBottomRigthWGS.Northing);
vStartNorthing = Math.Floor(vStartNorthing / 0.1) * 0.1;
double vEndNorthing = Math.Max(vOrigoWGS.Northing, vTopRightWGS.Northing);
vEndNorthing = Math.Ceiling(vEndNorthing / 0.1) * 0.1;
Pen vLinePen = new Pen(Color.FromArgb(150, Color.Red), (float)(Setup.PixelsPerMeter * Setup.ScaleAndTileSize.Scale / 3000.0));
Pen vSolidLinePen = new Pen(Color.FromArgb(200, Color.Red), (float)(Setup.PixelsPerMeter * Setup.ScaleAndTileSize.Scale / 2000.0));
for (double x = vStartEasting; x <= vEndEasting; x += 0.1)
{
var vStartWGS = new UtmPosition(0, x, vStartNorthing);
var vMidWGS = new UtmPosition(0, x, vStartNorthing + (vEndNorthing - vStartNorthing) / 2.0);
var vEndWGS = new UtmPosition(0, x, vEndNorthing);
var vStartUtm33 = vStartWGS.TransformFromWGS(33);
var vMidUtm33 = vMidWGS.TransformFromWGS(33);
var vEndUtm33 = vEndWGS.TransformFromWGS(33);
PointF vStart = Utm33ToBitmapPosition(vStartUtm33, pOrigoUtm33, pZoom);
PointF vMid = Utm33ToBitmapPosition(vMidUtm33, pOrigoUtm33, pZoom);
PointF vEnd = Utm33ToBitmapPosition(vEndUtm33, pOrigoUtm33, pZoom);
if (Math.Round(x, 1) % 1.0 == 0.0)
{
vGraphics.DrawCurve(vSolidLinePen, new PointF[] { vStart, vMid, vEnd });
}
else
{
vGraphics.DrawCurve(vLinePen, new PointF[] { vStart, vMid, vEnd });
}
float vIncline = (vEnd.X - vStart.X) / (vEnd.Y - vStart.Y);
PointF vLabelPosition = new PointF(vStart.X - vIncline * vStart.Y, 0);
RectangleF vLabelRect = new RectangleF(vLabelPosition.X - vLabelRectSize.Width / 2F, vLabelPosition.Y, vLabelRectSize.Width, vLabelRectSize.Height);
DrawLabelWGS(vGraphics, vLabelRect, vStartWGS.Easting);
vLabelPosition = new PointF(vStart.X - vIncline * (vStart.Y - vGraphics.VisibleClipBounds.Height), vGraphics.VisibleClipBounds.Height - vLabelRectSize.Height);
vLabelRect = new RectangleF(vLabelPosition.X - vLabelRectSize.Width / 2F, vLabelPosition.Y, vLabelRectSize.Width, vLabelRectSize.Height);
DrawLabelWGS(vGraphics, vLabelRect, vStartWGS.Easting);
}
for (double y = vStartNorthing; y <= vEndNorthing; y += 0.1)
{
var vStartWGS = new UtmPosition(0, vStartEasting, y);
var vMidWGS = new UtmPosition(0, vStartEasting + (vEndEasting - vStartEasting) / 2.0, y);
var vEndWGS = new UtmPosition(0, vEndEasting, y);
var vStartUtm33 = vStartWGS.TransformFromWGS(33);
var vMidUtm33 = vMidWGS.TransformFromWGS(33);
var vEndUtm33 = vEndWGS.TransformFromWGS(33);
PointF vStart = Utm33ToBitmapPosition(vStartUtm33, pOrigoUtm33, pZoom);
PointF vMid = Utm33ToBitmapPosition(vMidUtm33, pOrigoUtm33, pZoom);
PointF vEnd = Utm33ToBitmapPosition(vEndUtm33, pOrigoUtm33, pZoom);
if (Math.Round(y, 1) % 1.0 == 0.0)
{
vGraphics.DrawCurve(vSolidLinePen, new PointF[] { vStart, vMid, vEnd });
}
else
{
vGraphics.DrawCurve(vLinePen, new PointF[] { vStart, vMid, vEnd });
}
float vIncline = (vEnd.Y - vStart.Y) / (vEnd.X - vStart.X);
PointF vLabelPosition = new PointF(0, vStart.Y - vIncline * vStart.X);
RectangleF vLabelRect = new RectangleF(vLabelPosition.X, vLabelPosition.Y - vLabelRectSize.Height / 2F, vLabelRectSize.Width, vLabelRectSize.Height);
DrawLabelWGS(vGraphics, vLabelRect, vStartWGS.Northing);
vLabelPosition = new PointF(vGraphics.VisibleClipBounds.Width - vLabelRectSize.Width, vStart.Y - vIncline * (vStart.X - vGraphics.VisibleClipBounds.Width));
vLabelRect = new RectangleF(vLabelPosition.X, vLabelPosition.Y - vLabelRectSize.Height / 2F, vLabelRectSize.Width, vLabelRectSize.Height);
DrawLabelWGS(vGraphics, vLabelRect, vStartWGS.Northing);
}
}
