/// <summary>
/// for substitute tiles -
/// makes a subset of features out of existing features, adds it to cache (under this tile name),
/// so the next time this tile is called a cache-resident subset is ready for use
/// </summary>
public void CreateFeaturesSubset()
{
Features tileFeatures = TileCache.getFeatures(this, m_baseName);
if (!m_tileFeatures.HasLoaded)
{
#if DEBUG
LibSys.StatusBar.Trace("IP: Tile::CreateFeaturesSubset() - " + m_baseName + " - not loaded yet " + m_tileFeatures);
#endif
return;
}
if (tileFeatures.HasLoaded)
{
#if DEBUG
LibSys.StatusBar.Trace("IP: Tile::CreateFeaturesSubset() - " + m_baseName + " - found in cache " + tileFeatures);
#endif
}
else
{
GeoCoord bottomRight = m_bottomRight.Clone();
bottomRight.Normalize();
GeoCoord topLeft = m_topLeft.Clone();
topLeft.Normalize();
double rightLng = bottomRight.Lng;
double leftLng = topLeft.Lng;
if (rightLng <= -180.0d)
{
rightLng += 360.0d;
}
double bottomLat = bottomRight.Lat;
double topLat = topLeft.Lat;
//LibSys.StatusBar.Trace("IP: Tile::CreateFeaturesSubset() - " + m_baseName + " - copying features related to lng:" + leftLng + "<" + rightLng + " lat:" + bottomLat + "<" + topLat + " from " + m_tileFeatures.BaseName);
// we are not cloning the lo assuming that lo's belonging to a tile are not reappearing
// in any other tile. That also means that we need to cut selection rectangles correctly.
foreach (LiveObject lo in m_tileFeatures.List)
{
if (lo.Location.Lat <= topLat && lo.Location.Lat >= bottomLat &&
lo.Location.Lng >= leftLng && lo.Location.Lng <= rightLng)
{
try
{
//LibSys.StatusBar.WriteLine(" --- " + lo);
tileFeatures.Add(lo);
}
catch (Exception e)
{
}
}
}
tileFeatures.HasLoaded = true;
tileFeatures.IsEmpty = false;
}
m_tileFeatures = tileFeatures;
//LibSys.StatusBar.Trace("OK: Tile::CreateFeaturesSubset() - " + m_baseName + " result: " + m_tileFeatures);
//TileCache.ListFeaturesCache();
}
public static event DownloadProgressHandler ProgressCallback; // needed for WebDownload, stays empty here
public static void setMappingCacheLocation(string path)
{
Project.setMappingCacheLocation(path);
m_mapsPath = Project.GetMapsTempPath();
TileCache.Clear(); // release all files
TerraserverCache.setMappingCacheLocation();
}
public void Dispose()
{
//LibSys.StatusBar.Trace("TileTerra:Dispose() baseName=" + m_baseName);
if (m_tileBackdrop != null)
{
TileCache.BackdropMarkUnused(m_baseName);
m_tileBackdrop = null;
}
}
public void backdropArrived(Backdrop backdrop)
{
// the backdrop may arrive when this tile has been phased out due to TileSet.ReTile()
// this tile then hangs around as a means to pass backdrop to TileSet, which is supposed
// to find appropriate location for the backdrop.
#if DEBUG
LibSys.StatusBar.Trace("Tile::backdropArrived() - backdrop=" + backdrop);
#endif
m_tileBackdrop = backdrop;
if (m_tileBackdrop.IsEmpty)
{
// more likely, need to use substitute is discovered here.
if (MayUseSubstitute && !UseSubstitute)
{
// get substitute backdrop:
m_useSubstitute = true;
#if DEBUG
LibSys.StatusBar.Trace("Tile::backdropArrived() - requesting substitute " + m_substituteName);
#endif
m_tileBackdrop = TileCache.getBackdrop(this, m_substituteName); // may be Empty, never null
if (m_tileBackdrop.IsEmpty)
{
#if DEBUG
LibSys.StatusBar.Trace("Tile::backdropArrived() - got empty substitute " + m_substituteName);
#endif
m_isEmpty = true;
}
else if (m_tileBackdrop.HasImage)
{
#if DEBUG
LibSys.StatusBar.Trace("Tile::backdropArrived() - got good substitute " + m_tileBackdrop);
#endif
CalculateSubstituteRectangle(); // may instead set IsEmpty
}
else
{
#if DEBUG
LibSys.StatusBar.Trace("Tile::backdropArrived() - will wait for substitute ");
#endif
return; // waiting for substitute backdrop image to arrive
}
}
else
{
m_isEmpty = true;
}
}
else if (UseSubstitute && m_tileBackdrop.HasImage)
{
CalculateSubstituteRectangle(); // may instead set IsEmpty
}
m_tileSet.tileBackdropArrived(this);
}
public void featuresArrived(Features features)
{
// the Features may arrive when this tile has been phased out due to TileSet.ReTile()
// this tile then hangs around as a means to pass Features to TileSet, which is supposed
// to find appropriate location for the Features.
#if DEBUG
LibSys.StatusBar.Trace("featuresArrived() - features=" + features);
#endif
m_tileFeatures = features;
if (m_tileFeatures.IsEmpty)
{
// more likely, need to use substitute is discovered here.
if (MayUseSubstitute)
{
// get substitute features:
#if DEBUG
LibSys.StatusBar.Trace("Tile::featuresArrived() - requesting substitute " + m_substituteName);
#endif
m_tileFeatures = TileCache.getFeatures(this, m_substituteName); // may be Empty, never null
if (m_tileFeatures.IsEmpty)
{
#if DEBUG
LibSys.StatusBar.Trace("Tile::featuresArrived() - got empty substitute " + m_substituteName);
#endif
}
else
{
#if DEBUG
LibSys.StatusBar.Trace("Tile::featuresArrived() - copying relevant features");
#endif
CreateFeaturesSubset();
ProvokeFeaturesPutOnMap(); // provoke PutOnMap on the next Tile_Paint()
}
}
}
else
{
ProvokeFeaturesPutOnMap(); // provoke PutOnMap on the next Tile_Paint()
}
m_tileSet.tileFeaturesArrived(this);
}
private void ReTile()
{
//LibSys.StatusBar.Trace("IP: ReTile() drawableReady=" + Project.drawableReady);
if (!Project.drawableReady) // when starting, we get several resize events with different sizes, as
// layout settles. We want to ignore these and retile after the first paint.
{
return;
}
// what is the picture area in degrees?
// use CameraManager.m_coverageXDegrees, m_coverageYDegrees for span in degrees
// what is appropriate tile resolution?
double cameraHeightKm = (m_cameraManager.Location.Elev) / 1000.0d; // km
string tileScale;
// each tile scale has it's threshold, after which the next tile scale is used.
// the idea is to use the tile while it maps closely to 1:1 in pixels, and when
// the mapping requires magnification (i.e. x tile 1200x1200 --> 1300x1300 on the picture),
// then use the next level
if (cameraHeightKm > 5000.0d)
{
m_tileResolutionDegreesH = 360.0d; // degrees per tile
m_tileResolutionDegreesV = 180.0d; // degrees per tile
tileScale = "w";
}
else if (cameraHeightKm > 2000.0d)
{
m_tileResolutionDegreesH = 40.0d; // degrees per tile
m_tileResolutionDegreesV = 50.0d; // degrees per tile
tileScale = "y";
}
//else if(cameraHeightKm > 900.0d)
else if (cameraHeightKm > 370.0d)
{
m_tileResolutionDegreesH = 10.0d; // degrees per tile
m_tileResolutionDegreesV = 10.0d; // degrees per tile
tileScale = "x";
}
/*
* else if(cameraHeightKm > 370.0d)
* {
* m_tileResolutionDegreesH = 4.0d; // degrees per tile
* m_tileResolutionDegreesV = 4.0d; // degrees per tile
* tileScale = "z";
* }
*/
else if (cameraHeightKm > 100.0d)
{
m_tileResolutionDegreesH = 1.0d; // degrees per tile
m_tileResolutionDegreesV = 1.0d; // degrees per tile
tileScale = "";
}
else
{
m_tileResolutionDegreesH = 0.5d; // degrees per tile
m_tileResolutionDegreesV = 0.5d; // degrees per tile
tileScale = "a";
}
// how many tiles v*h do we need to cover the picture area?
GeoCoord topLeftTileCorner = getTopLeftTileCorner(m_cameraManager.CoverageTopLeft, tileScale, m_tileResolutionDegreesH, m_tileResolutionDegreesV);
GeoCoord bottomRightTileCorner = getBottomRightTileCorner(m_cameraManager.CoverageBottomRight, tileScale, m_tileResolutionDegreesH, m_tileResolutionDegreesV);
#if DEBUG
LibSys.StatusBar.Trace("TileSet:ReTile() topLeftTileCorner=" + topLeftTileCorner + " bottomRightTileCorner=" + bottomRightTileCorner);
#endif
m_hCount = (int)((bottomRightTileCorner.Lng - topLeftTileCorner.Lng) / m_tileResolutionDegreesH);
m_vCount = (int)((topLeftTileCorner.Lat - bottomRightTileCorner.Lat) / m_tileResolutionDegreesV);
// world tile is replicated, if 180 meridian is in the picture:
bool doWorldOffset = false;
switch (tileScale)
{
case "w":
if (m_cameraManager.CoverageBottomRight.Lng > 180.0d)
{
m_hCount++;
doWorldOffset = true;
}
else if (m_cameraManager.CoverageTopLeft.Lng < -180.0d)
{
topLeftTileCorner.Lng -= 360.0d; // left tile starts there
m_hCount++;
doWorldOffset = true;
}
break;
}
#if DEBUG
LibSys.StatusBar.Trace("TileSet:ReTile() m_vCount=" + m_vCount + " m_hCount=" + m_hCount + " doWorldOffset=" + doWorldOffset);
#endif
// calculate meters per pixel for selected tile scale:
m_xMetersPerPixel = m_cameraManager.MetersPerPixelX();
m_yMetersPerPixel = m_cameraManager.MetersPerPixelY();
#if DEBUG
LibSys.StatusBar.Trace("TileSet:ReTile() m_xMetersPerPixel=" + m_xMetersPerPixel + " m_yMetersPerPixel=" + m_yMetersPerPixel);
LibSys.StatusBar.Trace("TileSet:ReTile() ----------------- before " + TileCache.ToString());
#endif
double topLeftLat = topLeftTileCorner.Lat;
cleanTiles();
lock (tilesLock)
{
m_tiles = new Tile[m_vCount, m_hCount];
for (int vv = 0; vv < m_vCount; vv++)
{
double topLeftLng = topLeftTileCorner.Lng;
for (int hh = 0; hh < m_hCount; hh++)
{
GeoCoord topLeft = new GeoCoord(topLeftLng, topLeftLat, 0.0d);
GeoCoord bottomRight = new GeoCoord(topLeftLng + m_tileResolutionDegreesH,
topLeftLat - m_tileResolutionDegreesV, 0.0d);
m_tiles[vv, hh] = new Tile(this, tileScale, topLeft, bottomRight);
m_tiles[vv, hh].init();
switch (tileScale)
{
case "w":
// world tiles use doWorldOffset around 180 meridian:
if (doWorldOffset && hh > 0)
{
int offsetX = m_tiles[vv, hh].getFrameRectangle().Width;
m_tiles[vv, hh].Offset = new Point(offsetX, 0);
}
break;
default:
m_tiles[vv, hh].Offset = new Point(0, 0);
break;
}
#if DEBUG
LibSys.StatusBar.Trace(" hh=" + hh + " ---- offset=" + m_tiles[vv, hh].getOffset());
#endif
topLeftLng += m_tileResolutionDegreesH;
}
topLeftLat -= m_tileResolutionDegreesV;
}
} // lock
#if DEBUG
LibSys.StatusBar.Trace("TileSet:ReTile() ----------------- after " + TileCache.ToString());
#endif
TileCache.purge();
double safeHeight = ((double)Project.CAMERA_HEIGHT_SAFE) * 1000.0d;
if (m_cameraManager.Elev < safeHeight && (!Project.allowUnreasonableZoom && IsAllSubstitutes || IsEmpty))
{
// we get here if all tiles are already in cache, and all are empty.
LibSys.StatusBar.Trace("TileSet:ReTile() - all tiles empty - repositioning");
m_cameraManager.Elev = safeHeight;
}
}
private bool m_triedReload = false; // limits reload attempts
public void Tile_Paint(object sender, PaintEventArgs e)
{
//LibSys.StatusBar.Trace("Tile_Paint(): " + m_baseName + " painting to " + e.ClipRectangle);
try
{
Rectangle destRect = getFrameRectangle();
int www = 0;
int hhh = 0;
//LibSys.StatusBar.Trace("Tile_Paint(): tileImage=" + m_tileBackdrop);
if (m_tileBackdrop != null && !m_tileBackdrop.IsEmpty && m_tileBackdrop.HasImage)
{
//int compensate = 2;
//destRect.Inflate(compensate, compensate);
//destRect.Offset(-compensate / 2, -compensate / 2);
if (UseSubstitute)
{
int offX = m_substituteRectangle.X;
int offY = m_substituteRectangle.Y;
www = m_substituteRectangle.Width;
hhh = m_substituteRectangle.Height;
e.Graphics.DrawImage(m_tileBackdrop.Image, destRect, offX, offY, www, hhh,
System.Drawing.GraphicsUnit.Pixel);
}
else
{
www = m_tileBackdrop.Width;
hhh = m_tileBackdrop.Height;
//LibSys.StatusBar.Trace("Tile_Paint(): tileImage w=" + www + " h=" + hhh);
// destRect = e.ClipRectangle;
e.Graphics.DrawImage(m_tileBackdrop.Image, destRect, 0, 0, www, hhh,
System.Drawing.GraphicsUnit.Pixel);
}
if (Project.drawGrid)
{
DrawGrid(e.Graphics, destRect, www, hhh, null);
}
}
else
{
if (m_tileBackdrop != null && m_tileBackdrop.ImageCorrupted)
{
DrawGrid(e.Graphics, destRect, www, hhh, "BAD JPG");
if (!m_triedReload)
{
m_triedReload = true;
TileCache.resetBackdrop(this, m_baseName); // try reloading
}
}
else
{
DrawGrid(e.Graphics, destRect, www, hhh, "NOT LOADED");
}
}
}
catch (Exception eee)
{
LibSys.StatusBar.Error("Tile:Tile_Paint(): " + m_baseName + " " + eee);
}
}
public void init()
{
GeoCoord topLeft = m_topLeft.Clone();
topLeft.Normalize();
GeoCoord bottomRight = m_bottomRight.Clone();
bottomRight.Normalize();
int iLat = (int)Math.Ceiling(topLeft.Lat);
int iLng = (int)Math.Floor(topLeft.Lng);
m_siLng = iLng;
m_siLat = iLat;
if (m_tileScale.Equals("z"))
{
// HACK:
// compensate for the shift in z-level tiles
// (their names point to the center, not the top left corner:
iLat -= 2;
iLng += 2;
}
string latDir = iLat < 0 ? "s" : "n";
string lngDir = iLng < 0 ? "w" : "e";
iLat = Math.Abs(iLat);
iLng = Math.Abs(iLng);
switch (m_tileScale)
{
case "w":
m_level = 0;
m_baseName = "world_good";
break;
case "y":
m_level = 1;
if (iLat == 60 && latDir.Equals("s"))
{
m_tileBackdrop = null;
return;
}
else
{
string sLng = ("" + iLng).PadLeft(3, '0');
string sLat = "" + iLat;
m_baseName = m_tileScale + sLng + lngDir + sLat + latDir;
}
break;
case "x":
m_level = 2;
m_baseName = m_tileScale + iLng + lngDir + iLat + latDir;
break;
case "z":
m_level = 3;
m_baseName = m_tileScale + iLng + lngDir + iLat + latDir;
break;
default:
m_level = 4;
iLat = (int)Math.Floor(bottomRight.Lat);
iLng = (int)Math.Ceiling(bottomRight.Lng);
if (iLng == -180)
{
// edge correction needed around Lng=180
iLng = 180;
}
latDir = iLat < 0 ? "s" : "n";
lngDir = iLng <= 0 ? "w" : "e";
m_siLng = iLng;
m_siLat = iLat;
iLat = Math.Abs(iLat);
iLng = Math.Abs(iLng);
m_baseName = m_tileScale + iLng + lngDir + iLat + latDir;
break;
case "a":
m_level = 5;
iLat = (int)Math.Floor(bottomRight.Lat);
iLng = (int)Math.Ceiling(bottomRight.Lng);
if (iLng == -180)
{
// edge correction needed around Lng=180
iLng = 180;
}
latDir = iLat < 0 ? "s" : "n";
lngDir = iLng <= 0 ? "w" : "e";
m_siLng = iLng;
m_siLat = iLat;
iLat = Math.Abs(iLat);
iLng = Math.Abs(iLng);
// figure out quadrant and correct the tile scale letter:
double ty = topLeft.Lat - Math.Floor(topLeft.Lat);
double tx = topLeft.Lng - Math.Floor(topLeft.Lng);
if (ty > 0.01d && tx > 0.01d)
{
m_tileScale = "d";
m_aShiftX = 1;
m_aShiftY = 1;
}
else if (tx > 0.01d)
{
m_tileScale = "b";
m_aShiftX = 1;
}
else if (ty > 0.01d)
{
m_tileScale = "c";
m_aShiftY = 1;
}
m_baseName = m_tileScale + iLng + lngDir + iLat + latDir;
break;
}
if (MayUseSubstitute)
{
// calculate substitute backdrop parameters, just in case real backdrop will be missing:
int substLat = (int)Math.Floor(bottomRight.Lat);
if (substLat >= 0)
{
substLat = substLat / 10 + 1;
}
else if (substLat < 0 && substLat >= -10)
{
substLat = 0;
latDir = "n";
}
else
{
substLat = (int)Math.Ceiling(bottomRight.Lat + 0.0001d);
substLat = substLat / 10;
}
substLat = substLat * 10;
int substLng = (int)Math.Ceiling(bottomRight.Lng);
if (substLng > 0)
{
substLng = (int)Math.Floor(topLeft.Lng);
substLng = substLng / 10;
}
else if (substLng == 0)
{
// edge correction needed around Lng=0
substLng = 1;
}
else if (substLng == -180)
{
// edge correction needed around Lng=180
substLng = 17;
}
else
{
substLng = substLng / 10 - 1;
}
substLng = substLng * 10;
m_substLng = substLng;
m_substLat = substLat;
substLat = Math.Abs(substLat);
substLng = Math.Abs(substLng);
m_substituteName = "x" + substLng + lngDir + substLat + latDir;
#if DEBUG
LibSys.StatusBar.Trace("Tile::init() m_substituteName=" + m_substituteName);
LibSys.StatusBar.Trace("siLng=" + m_siLng + " m_substLng=" + m_substLng + " siLat=" + m_siLat + " m_substLat=" + m_substLat);
#endif
}
//LibSys.StatusBar.Trace("Tile:init() baseName=" + m_baseName);
m_tileBackdrop = TileCache.getBackdrop(this, m_baseName); // may be Empty, never null
if (m_tileBackdrop.IsEmpty)
{
// unlikely, but we may know immediately that we need to use substitute, if feasible:
if (MayUseSubstitute)
{
// get substitute backdrop:
m_useSubstitute = true;
//LibSys.StatusBar.Trace("Tile::init() - requesting backdrop substitute " + m_substituteName);
m_tileBackdrop = TileCache.getBackdrop(this, m_substituteName); // may be Empty, never null
if (m_tileBackdrop.IsEmpty)
{
m_isEmpty = true;
}
else if (m_tileBackdrop.HasImage)
{
CalculateSubstituteRectangle(); // may instead set IsEmpty
}
// else wait for arrival...
}
else
{
m_isEmpty = true;
}
}
m_tileFeatures = TileCache.getFeatures(this, m_baseName); // may be Empty, never null
if (m_tileFeatures.IsEmpty)
{
// unlikely, but we may know immediately that we need to use substitute, if feasible:
if (MayUseSubstitute)
{
// get substitute features:
#if DEBUG
LibSys.StatusBar.Trace("Tile::init() - requesting features substitute " + m_substituteName);
#endif
m_tileFeatures = TileCache.getFeatures(this, m_substituteName); // may be Empty, never null
if (m_tileFeatures.HasLoaded)
{
CreateFeaturesSubset();
ProvokeFeaturesPutOnMap(); // provoke PutOnMap on the next Tile_Paint()
}
else
{
#if DEBUG
LibSys.StatusBar.Trace("Tile::init() - " + m_baseName + " - features hasn't loaded - nothing to copy...");
#endif
}
// wait for arrival...
}
}
else
{
ProvokeFeaturesPutOnMap(); // provoke PutOnMap on the next Tile_Paint()
}
}
