////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Constructs a new <code>GeoBounds</code> whose upper-left corner is the
* specified <code>GeoPoint</code>, and whose Width and Height are both zero.
* @param p a <code>GeoPoint</code> that is the top left corner
* of the <code>GeoBounds</code>
*/
public GeoBounds(GeoPoint p)
: this(p.X, p.Y, 0, 0)
{
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Computes the geographical coordinates from pixel coordinates in the map.
* @param pt pixel coordinates in the map.
* @return the the geographical coordinates.
*/
public GeoLatLng FromMapPixelToLatLng(GeoPoint pt)
{
GeoPoint center = FromLatLngToPixel(_mapCenterPt, _mapZoomLevel);
GeoPoint topLeft = new GeoPoint(center.X - _mapSize.Width / 2.0,
center.Y - _mapSize.Height / 2.0);
GeoPoint pointPos = new GeoPoint(pt.X, pt.Y);
pointPos.X += topLeft.X;
pointPos.Y += topLeft.Y;
GeoLatLng latLng = FromPixelToLatLng(pointPos, _mapZoomLevel);
return latLng;
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Returns the square of the Distance from this
* <code>GeoPoint</code> to a specified <code>GeoPoint</code>.
*
* @param pt the specified point to be measured
* against this <code>GeoPoint</code>
* @return the square of the Distance between this
* <code>GeoPoint</code> to a specified <code>GeoPoint</code>.
*/
public double DistanceSq(GeoPoint pt)
{
double px = pt.GetX() - GetX();
double py = pt.GetY() - GetY();
return (px * px + py * py);
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 21JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* @inheritDoc
*/
public override void GetImage(int mtype, int x, int y, int zoomLevel)
{
lock (VectorMapAbstractCanvas.GRAPHICS_MUTEX)
{
int shiftWidth = 32;
GeoPoint pt1 = new GeoPoint(x * MapLayer.MAP_TILE_WIDTH - shiftWidth,
y * MapLayer.MAP_TILE_WIDTH - shiftWidth);
GeoPoint pt2 = new GeoPoint((x + 1) * MapLayer.MAP_TILE_WIDTH + shiftWidth,
(y + 1) * MapLayer.MAP_TILE_WIDTH + shiftWidth);
GeoLatLng latLng1 = MapLayer.FromPixelToLatLng(pt1, zoomLevel);
GeoLatLng latLng2 = MapLayer.FromPixelToLatLng(pt2, zoomLevel);
double minY = Math.Min(latLng1.Lat(), latLng2.Lat());
double maxY = Math.Max(latLng1.Lat(), latLng2.Lat());
double minX = Math.Min(latLng1.Lng(), latLng2.Lng());
double maxX = Math.Max(latLng1.Lng(), latLng2.Lng());
double width =0.00;
double height = 0.00;
//width = width < 0.06 ? 0.06 : width;
//height = height < 0.06 ? 0.06 : height;
GeoLatLngBounds geoBounds = new GeoLatLngBounds(minX - width / 2.0, minY - height/2.0,
maxX - minX + width , maxY - minY + height);
try
{
Hashtable[] mapFeatures = _geoSet.Search(geoBounds);
int totalSize = 0;
for (int i = 0; i < mapFeatures.Length; i++)
{
Hashtable mapFeaturesInLayer = mapFeatures[i];
totalSize += mapFeaturesInLayer.Count;
}
totalSize += 1;
int mapObjectIndex = 0;
_vectorMapCanvas.ClearCanvas(0xffffff);
for (int i = 0; i < mapFeatures.Length; i++)
{
int zOrder = mapFeatures.Length - 1 - i;
Hashtable mapFeaturesInLayer = mapFeatures[zOrder];
ICollection enuKeys = mapFeaturesInLayer.Keys;
MapFeatureLayer mapLayer = _geoSet.GetMapFeatureLayer(zOrder);
foreach (var o in enuKeys)
{
int mapInfoID = (int)o;
MapFeature mapFeature = mapLayer
.GetMapFeatureByID(mapInfoID);
mapObjectIndex++;
_vectorMapCanvas.SetFont(GetFont(mapLayer.FontName));
_vectorMapCanvas.SetFontColor(mapLayer.FontColor);
_vectorMapCanvas.DrawMapObject(mapFeature.MapObject,
geoBounds, zoomLevel);
if (_readListener != null)
{
_readListener.readProgress(mapObjectIndex,
totalSize);
}
}
}
_vectorMapCanvas.DrawMapText();
ImageArray = PNGEncoder.GetPngrgb(MapLayer.MAP_TILE_WIDTH,
MapLayer.MAP_TILE_WIDTH,
_vectorMapCanvas.GetRGB());
ImageArraySize = ImageArray.Length;
IsImagevalid = true;
if (ImageArraySize == 1933)
{
ImageArray = null;
IsImagevalid = false;
ImageArraySize = 0;
}
if (_readListener != null)
{
_readListener.readProgress(totalSize, totalSize);
}
}
catch (Exception e )
{
}
}
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Computes the geographical coordinates from pixel coordinates.
* @param pt pixel coordinates.
* @param zoomLevel current zoom level
* @return the geographical coordinates (latitude,longitude) pair
*/
public static GeoLatLng FromPixelToLatLng(GeoPoint pt, int zoomLevel)
{
//const double maxLat = Math.PI;
//double zoom = zoomLevel;
//const double tileWidth = 256.0;
//const double tileHeight = 256.0;
//double tileY = (pt.Y / tileHeight);
//double y = (pt.Y - tileY * tileHeight);
//double maxTileY = MathEx.Pow(2, zoom);
//double mercatorY = tileY + y / tileHeight;
//double res = maxLat * (1 - 2 * mercatorY / maxTileY);
//double a = MathEx.Exp(2 * res);
//a = (a - 1) / (a + 1);
//a = a / MathEx.Sqrt(1 - a * a);
//double lat = MathEx.Atan(a) * 180 / Math.PI;
//double tileX = pt.X / tileHeight;
//double x = (pt.X - tileX * tileHeight);
//double maxTileX = MathEx.Pow(2, zoom);
//double mercatorX = tileX + x / tileWidth;
//res = mercatorX / maxTileX;
//double lng = 360 * res - 180;
//return new GeoLatLng(lat, lng);
double lat;
double lng;
TileSystem.PixelXYToLatLong((int)pt.X,(int)pt.Y,zoomLevel,out lat,out lng);
return new GeoLatLng(lat, lng);
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Check whether the current rectangle Contains given point.
* @param point the point object.
* @return true if the rectangular area (inclusively) Contains the pixel
* coordinates.
*/
public bool ContainsPoint(GeoPoint point)
{
SetBounds(MinX, MinY, MaxX - MinX, MaxY - MinY);
return Contains(point.X, point.Y);
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Get the image at given X,Y zoom level.
* @param X X index of the map tile
* @param Y Y index of the map tile.
* @param zoomLevel zoom level of the map tile
* @return the given image.
*/
public IImage GetImage(int x, int y, int zoomLevel)
{
MapDirection mapDirection = GetMapDirection();
if (mapDirection != null)
{
try
{
const int shiftWidth = 4;
GeoPoint pt1 = new GeoPoint(x * MapLayer.MAP_TILE_WIDTH - shiftWidth,
y * MapLayer.MAP_TILE_WIDTH - shiftWidth);
GeoPoint pt2 = new GeoPoint((x + 1) * MapLayer.MAP_TILE_WIDTH + shiftWidth,
(y + 1) * MapLayer.MAP_TILE_WIDTH + shiftWidth);
GeoLatLng latLng1 = MapLayer.FromPixelToLatLng(pt1, zoomLevel);
GeoLatLng latLng2 = MapLayer.FromPixelToLatLng(pt2, zoomLevel);
double minY = Math.Min(latLng1.Lat(), latLng2.Lat());
double maxY = Math.Max(latLng1.Lat(), latLng2.Lat());
double minX = Math.Min(latLng1.Lng(), latLng2.Lng());
double maxX = Math.Max(latLng1.Lng(), latLng2.Lng());
GeoLatLngBounds geoBounds = new GeoLatLngBounds(minX, minY,
maxX - minX, maxY - minY);
GeoLatLng centerPt = geoBounds.GetCenter();
_mapDirectionLayer.SetCenter(centerPt, zoomLevel);
_mapDirectionLayer._screenBounds = geoBounds;
_mapTileGraphics.SetColor(TRANSPARENCY);
_mapTileGraphics.FillRect(0, 0, MapLayer.MAP_TILE_WIDTH,
MapLayer.MAP_TILE_WIDTH);
_mapDirectionLayer.Paint(_mapTileGraphics);
IsImagevalid = true;
if (_readListener != null)
{
_readListener.readProgress(16, 16);
}
return _mapTileImage.ModifyAlpha(160,
TRANSPARENCY);
}
catch (Exception)
{
}
}
return null;
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Returns the pixel coordinates of the center of the rectangular area.
* @return the center point of the GeoBounds.
*/
public GeoPoint Mid()
{
GeoPoint point = new GeoPoint((MinX + MaxX) / 2, (MinY + MaxY) / 2);
return point;
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Returns the pixel coordinates of the upper left corner of the rectangular
* area.
* @return the upper left corner of the rectangular area.
*/
public GeoPoint Min()
{
GeoPoint point = new GeoPoint(MinX, MinY);
return point;
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Constructs and initializes a point with the same location as
* the specified <code>Point</code> object.
* @param p a point
*/
public GeoPoint(GeoPoint p)
: this(p.X, p.Y)
{
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Returns the pixel coordinates of the lower right corner of the
* rectangular area.
* @return the upper lower right of the rectangular area.
*/
public GeoPoint Max()
{
GeoPoint point = new GeoPoint(MaxX, MaxY);
return point;
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Sets the location of this <code>GeoPoint</code> to the same
* coordinates as the specified <code>GeoPoint</code> object.
* @param p the specified <code>GeoPoint</code> to which to set
* this <code>GeoPoint</code>
*/
public void SetLocation(GeoPoint p)
{
SetLocation(p.GetX(), p.GetY());
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Constructs and initializes a point with the same location as
* the specified <code>Point</code> object.
* @param p a point
*/
public GeoPoint(GeoPoint p)
: this(p.X, p.Y)
{
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Sets the location of this <code>GeoPoint</code> to the same
* coordinates as the specified <code>GeoPoint</code> object.
* @param p the specified <code>GeoPoint</code> to which to set
* this <code>GeoPoint</code>
*/
public void SetLocation(GeoPoint p)
{
SetLocation(p.GetX(), p.GetY());
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Adds the <code>GeoPoint</code> object <code>pt</code> to this
* <code>GeoBounds</code>.
* The resulting <code>GeoBounds</code> is the smallest
* <code>GeoBounds</code> that Contains both the original
* <code>GeoBounds</code> and the specified <code>GeoPoint</code>.
* <p>
* After adding a point, a call to <code>Contains</code> with the
* added point as an argument does not necessarily return
* <code>true</code>. The <code>Contains</code>
* method does not return <code>true</code> for points on the right
* or bottom edges of a rectangle. Therefore, if the added point falls
* on the left or bottom edge of the enlarged rectangle,
* <code>Contains</code> returns <code>false</code> for that point.
* @param pt the new <code>GeoPoint</code> to Add to this
* <code>GeoBounds</code>.
*/
public void Add(GeoPoint pt)
{
Add(pt.GetX(), pt.GetY());
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Determines where the specified {@link GeoPoint} lies with
* respect to this <code>GeoBounds</code>.
* This method computes a binary OR of the appropriate mask values
* indicating, for each side of this <code>GeoBounds</code>,
* whether or not the specified <code>GeoPoint</code> is on the same
* side of the edge as the rest of this <code>GeoBounds</code>.
* @param p the specified <code>GeoPoint</code>
* @return the logical OR of all appropriate out codes.
*/
public int Outcode(GeoPoint p)
{
return Outcode(p.GetX(), p.GetY());
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* check if this rectangle Contains given point.
* @param p the point to be checked
* @return true,it Contains given point.
*/
public bool Contains(GeoPoint p)
{
return Contains(p.GetX(), p.GetY());
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Sets the location and size of the framing rectangle of this
* <code>IShape</code> to the specified {@link GeoPoint} and
* {@link GeoSize}, respectively. The framing rectangle is used
* by the subclasses of <code>RectangularShape</code> to define
* their geometry.
* @param loc the specified <code>GeoPoint</code>
* @param size the specified <code>GeoSize</code>
*/
public void SetFrame(GeoPoint loc, GeoSize size)
{
SetFrame(loc.GetX(), loc.GetY(), size.GetWidth(), size.GetHeight());
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Enlarges this box so that the point is also contained in this box.
* @param point the point object.
*/
public void Extend(GeoPoint point)
{
SetBounds(MinX, MinY, MaxX - MinX, MaxY - MinY);
Add(point.X, point.Y);
MinX = X;
MinY = Y;
MaxX = X + Width;
MaxY = Y + Height;
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Sets the framing rectangle of this <code>IShape</code> based on a
* specified center <code>GeoPoint</code> and corner
* <code>GeoPoint</code>. The framing rectangle is used by the subclasses
* of <code>RectangularShape</code> to define their geometry.
* @param center the specified center <code>GeoPoint</code>
* @param corner the specified corner <code>GeoPoint</code>
*/
public void SetFrameFromCenter(GeoPoint center, GeoPoint corner)
{
SetFrameFromCenter(center.GetX(), center.GetY(),
corner.GetX(), corner.GetY());
}
////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS --------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////
/**
*
* @param mapDirection
* @param X
* @param Y
* @param Width
* @param Height
*/
private void DrawRouteImage(MapDirection mapDirection, int x, int y,
int width, int height)
{
if (!_routeDrawWaypointOnly)
{
_sutherlandHodgman = new SutherlandHodgman(_screenBounds);
ArrayList polyline = new ArrayList();
int minLevel = NeedShowLevel(mapDirection.Polyline.NumLevels, GetZoom());
for (int i = 0; i < mapDirection.Polyline.GetVertexCount(); i++)
{
int level = mapDirection.Polyline.GetLevel(i);
if (level >= minLevel)
{
polyline.Add(mapDirection.Polyline.GetVertex(i));
}
}
ArrayList clippedPts = _sutherlandHodgman.ClipPline(polyline);
GeoPoint newPt1;
GeoPoint newPt2;
GeoPoint drawPt1 = new GeoPoint(0, 0), drawPt2 = new GeoPoint(0, 0);
const int steps = 1;
int numOfTiles = MAP_TILE_WIDTH / _mapDrawingTileWidth;
Rectangle drawArea = new Rectangle();
Rectangle intersectRect = new Rectangle(0, 0, width, height);
int xIndex;
for (xIndex = 0; xIndex < numOfTiles; xIndex++)
{
int yIndex;
for (yIndex = 0; yIndex < numOfTiles; yIndex++)
{
bool hasPt1 = false;
GeoLatLng pt1 = null;
_routeGraphics2D.Clear(Color.White);
drawArea.X = xIndex * _mapDrawingTileWidth;
drawArea.Y = yIndex * _mapDrawingTileWidth;
drawArea.Width = drawArea.Height = _mapDrawingTileWidth;
drawArea = intersectRect.Intersection(drawArea);
int totalPointSize = clippedPts.Count;
if (!drawArea.IsEmpty())
{
_routeGraphics2D.SetClip(0, 0,
drawArea.Width, drawArea.Height);
try
{
for (int j = 0; j < totalPointSize; j += steps)
{
GeoLatLng pt = (GeoLatLng)clippedPts[j];
int level = minLevel;
if (hasPt1 == false)
{
if (level >= minLevel)
{
{
{
hasPt1 = true;
pt1 = pt;
continue;
}
}
}
}
if (hasPt1)
{
if (level >= minLevel)
{
GeoLatLng pt2 = pt;
newPt1 = FromLatLngToMapPixel(pt1);
newPt2 = FromLatLngToMapPixel(pt2);
newPt1.X -= x + xIndex * _mapDrawingTileWidth;
newPt1.Y -= y + yIndex * _mapDrawingTileWidth;
newPt2.X -= x + xIndex * _mapDrawingTileWidth;
newPt2.Y -= y + yIndex * _mapDrawingTileWidth;
drawPt1.X = (int)newPt1.X;
drawPt1.Y = (int)newPt1.Y;
drawPt2.X = (int)newPt2.X;
drawPt2.Y = (int)newPt2.Y;
if ((drawPt1.Distance(drawPt2) > 0))
{
_routeGraphics2D.DrawLine(RoutePen, (int)drawPt1.X,
(int)drawPt1.Y,
(int)drawPt2.X, (int)drawPt2.Y);
pt1 = pt2;
if (_readListener != null)
{
_readListener.readProgress(j,
totalPointSize);
}
}
}
}
}
}
catch (Exception)
{
}
}
_routeGraphics.DrawRGB(_routeGraphics2D.GetRGB(), 0,
_mapDrawingTileWidth,
xIndex * _mapDrawingTileWidth,
yIndex * _mapDrawingTileWidth,
_mapDrawingTileWidth,
_mapDrawingTileWidth, true);
}
}
}
else
{
_routeGraphics.SetColor(TRANSPARENCY);
_routeGraphics.FillRect(0, 0, MAP_TILE_WIDTH, MAP_TILE_WIDTH);
}
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Sets the diagonal of the framing rectangle of this <code>IShape</code>
* based on two specified <code>GeoPoint</code> objects. The framing
* rectangle is used by the subclasses of <code>RectangularShape</code>
* to define their geometry.
*
* @param p1 the start <code>GeoPoint</code> of the specified diagonal
* @param p2 the end <code>GeoPoint</code> of the specified diagonal
*/
public void SetFrameFromDiagonal(GeoPoint p1, GeoPoint p2)
{
SetFrameFromDiagonal(p1.GetX(), p1.GetY(), p2.GetX(), p2.GetY());
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 21JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Computes the pixel coordinates of the given geographical point vector
* in the map.
* @param vpts the geographical coordinates vector.
* @return the pixel coordinates in the map.
*/
protected GeoPoint[] FromLatLngToMapPixel(ArrayList vpts)
{
GeoPoint[] retPoints = new GeoPoint[vpts.Count];
for (int i = 0; i < vpts.Count; i++)
{
retPoints[i] = FromLatLngToMapPixel(
(GeoLatLng)vpts[i]);
}
return retPoints;
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Constructs a rectangle that Contains all the given points.
* @param points an array of points.
*/
public GeoBounds(GeoPoint[] points)
: this()
{
if (points == null)
{
SetRect(0, 0, 0, 0);
}
if (points != null)
{
int count = points.Length;
switch (count)
{
case 0:
SetRect(0, 0, 0, 0);
break;
case 1:
SetRect(points[0].X, points[0].Y, 0, 0);
break;
case 2:
{
double x1 = Math.Min(points[0].X, points[1].X);
double x2 = Math.Max(points[0].X, points[1].X);
double y1 = Math.Min(points[0].Y, points[1].Y);
double y2 = Math.Max(points[0].Y, points[1].Y);
SetRect(x1, y1, x2 - x1, y2 - y1);
}
break;
default:
{
double x1 = Math.Min(points[0].X, points[1].X);
double x2 = Math.Max(points[0].X, points[1].X);
double y1 = Math.Min(points[0].Y, points[1].Y);
double y2 = Math.Max(points[0].Y, points[1].Y);
SetRect(x1, y1, x2 - x1, y2 - y1);
}
for (int i = 2; i < count; i++)
{
Add(points[i].X, points[i].Y);
}
break;
}
}
MinX = X;
MinY = Y;
MaxX = X + Width;
MaxY = Y + Height;
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Computes the pixel coordinates of the given geographical point in the map.
* @param latlng the geographical coordinates.
* @return the pixel coordinates in the map.
*/
public GeoPoint FromLatLngToMapPixel(GeoLatLng latlng)
{
GeoPoint center = FromLatLngToPixel(_mapCenterPt, _mapZoomLevel);
GeoPoint topLeft = new GeoPoint(center.X - _mapSize.Width / 2.0,
center.Y - _mapSize.Height / 2.0);
GeoPoint pointPos = FromLatLngToPixel(latlng, _mapZoomLevel);
pointPos.X -= topLeft.X;
pointPos.Y -= topLeft.Y;
return new GeoPoint((int)(pointPos.X + 0.5), (int)(pointPos.Y + 0.5));
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 03JAN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Constructs a new <code>GeoBounds</code> whose upper-left corner is
* specified by the {@link GeoPoint} argument, and
* whose Width and Height are specified by the
* {@link GeoSize} argument.
* @param p a <code>GeoPoint</code> that is the upper-left corner of
* the <code>GeoBounds</code>
* @param size a <code>GeoSize</code>, representing the
* Width and Height of the <code>GeoBounds</code>
*/
public GeoBounds(GeoPoint p, GeoSize size)
: this(p.X, p.Y, size.Width, size.Height)
{
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* return screen boundary in geo coordinates.
* @param pt the center of the screen.
* @return screen boundary in geo coordinates.
*/
public GeoLatLngBounds GetScreenBounds(GeoLatLng pt)
{
lock (_syncObject)
{
GeoPoint center = FromLatLngToPixel(pt, _mapZoomLevel);
int shiftWidth = _screenSize.Width;
GeoPoint topLeft = new GeoPoint(center.X - _screenSize.Width / 2.0 - shiftWidth,
center.Y - _screenSize.Height / 2.0 - _screenSize.Height);
GeoPoint bottomRight = new GeoPoint(center.X + _screenSize.Width / 2.0 + shiftWidth,
center.Y + _screenSize.Height / 2.0 + _screenSize.Height);
GeoLatLng topLeftLatLng = FromPixelToLatLng(topLeft, _mapZoomLevel);
GeoLatLng bottomRightLatLng = FromPixelToLatLng(bottomRight, _mapZoomLevel);
double minY = Math.Min(bottomRightLatLng.Lat(), topLeftLatLng.Lat());
double maxY = Math.Max(bottomRightLatLng.Lat(), topLeftLatLng.Lat());
double minX = Math.Min(bottomRightLatLng.Lng(), topLeftLatLng.Lng());
double maxX = Math.Max(bottomRightLatLng.Lng(), topLeftLatLng.Lng());
return new GeoLatLngBounds(minX, minY, maxX - minX, maxY - minY);
}
}
////////////////////////////////////////////////////////////////////////////
//--------------------------------- REVISIONS ------------------------------
// Date Name Tracking # Description
// --------- ------------------- ------------- ----------------------
// 18JUN2009 James Shen Initial Creation
////////////////////////////////////////////////////////////////////////////
/**
* Returns the Distance from this <code>GeoPoint</code> to a
* specified <code>GeoPoint</code>.
*
* @param pt the specified point to be measured
* against this <code>GeoPoint</code>
* @return the Distance between this <code>GeoPoint</code> and
* the specified <code>GeoPoint</code>.
*/
public double Distance(GeoPoint pt)
{
double px = pt.GetX() - GetX();
double py = pt.GetY() - GetY();
return MathEx.Sqrt(px * px + py * py);
}