public TheaterDotLxFileRecord GetElevationPostRecordByColumnAndRow(int postColumn, int postRow, uint lod)
{
if (_terrainDB == null || _terrainDB.TheaterDotLxFiles == null)
{
return(null);
}
var lodInfo = _terrainDB.TheaterDotLxFiles[lod];
if (lodInfo.O == null || lodInfo.L == null)
{
return(null);
}
var mapInfo = _terrainDB.TheaterDotMap;
const int postsAcross = Constants.NUM_ELEVATION_POSTS_ACROSS_SINGLE_LOD_SEGMENT;
_elevationPostCoordinateClamper.ClampElevationPostCoordinates(ref postColumn, ref postRow, lodInfo.LoDLevel);
var blockRow = (int)Math.Floor((postRow / (float)postsAcross));
var blockCol = (int)Math.Floor((postColumn / (float)postsAcross));
var oIndex = (int)(blockRow * mapInfo.LODMapHeights[lodInfo.LoDLevel]) + blockCol;
var block = lodInfo.O[oIndex];
var col = (postColumn % postsAcross);
var row = (postRow % postsAcross);
var lIndex =
(int)
(((block.LRecordStartingOffset / (lodInfo.LRecordSizeBytes * postsAcross * postsAcross)) * postsAcross *
postsAcross) + ((row * postsAcross) + col));
var lRecord = lodInfo.L[lIndex];
return(lRecord);
}
public void GetNearestElevationPostColumnAndRowForNorthEastCoordinates(float feetNorth, float feetEast, uint lod, out int col, out int row)
{
var feetBetweenElevationPosts = _distanceBetweenElevationPostsCalculator.GetNumFeetBetweenElevationPosts(lod);
col = (int)Math.Floor(feetEast / feetBetweenElevationPosts);
row = (int)Math.Floor(feetNorth / feetBetweenElevationPosts);
_elevationPostCoordinateClamper.ClampElevationPostCoordinates(ref row, ref col, lod);
}
public Bitmap GetDetailTextureForElevationPost(int postCol, int postRow, uint lod)
{
var col = postCol;
var row = postRow;
_elevationPostCoordinateClamper.ClampElevationPostCoordinates(ref col, ref row, lod);
if (postCol != col || postRow != row)
{
col = 0;
row = 0;
}
var lRecord = _columnAndRowElevationPostRetriever.GetElevationPostRecordByColumnAndRow(col, row, lod);
if (lRecord == null)
{
return(null);
}
var textureId = lRecord.TextureId;
var bigTexture = _terrainTextureByTextureIdRetriever.GetTerrainTextureByTextureId(textureId, lod);
Bitmap toReturn;
if (lod <= _terrainDB.TheaterDotMap.LastNearTiledLOD)
{
var chunksWide = 4 >> (int)lod;
var thisChunkXIndex = (uint)(col % chunksWide);
var thisChunkYIndex = (uint)(row % chunksWide);
var leftX = (int)(thisChunkXIndex * (bigTexture.Width / chunksWide));
var rightX = (int)((thisChunkXIndex + 1) * (bigTexture.Width / chunksWide)) - 1;
var topY = (int)(bigTexture.Height - (thisChunkYIndex + 1) * (bigTexture.Height / chunksWide));
var bottomY = (int)(bigTexture.Height - thisChunkYIndex * (bigTexture.Height / chunksWide)) - 1;
var sourceRect = new Rectangle(leftX, topY, (rightX - leftX) + 1, (bottomY - topY) + 1);
toReturn = (Bitmap)Util.CropBitmap(bigTexture, sourceRect);
bigTexture.Dispose();
}
else
{
toReturn = bigTexture;
}
return(toReturn);
}
public void ClampElevationPostCoordinates(ref int postColumn, ref int postRow, uint lod)
{
_elevationPostCoordinateClamper.ClampElevationPostCoordinates(ref postColumn, ref postRow, lod);
}