internal static IEnumerable <TileInfo> GetTileInfos(ITileSchema schema, Extent extent, string levelId)
{
// todo: move this method elsewhere.
var range = TileTransform.WorldToTile(extent, levelId, schema);
// todo: use a method to get tilerange for full schema and intersect with requested tilerange.
var startX = Math.Max(range.FirstCol, schema.GetMatrixFirstCol(levelId));
var stopX = Math.Min(range.FirstCol + range.ColCount, schema.GetMatrixFirstCol(levelId) + schema.GetMatrixWidth(levelId));
var startY = Math.Max(range.FirstRow, schema.GetMatrixFirstRow(levelId));
var stopY = Math.Min(range.FirstRow + range.RowCount, schema.GetMatrixFirstRow(levelId) + schema.GetMatrixHeight(levelId));
for (var x = startX; x < stopX; x++)
{
for (var y = startY; y < stopY; y++)
{
yield return(new TileInfo
{
Extent = TileTransform.TileToWorld(new TileRange(x, y), levelId, schema),
Index = new TileIndex(x, y, levelId)
});
}
}
}
internal static IEnumerable<TileInfo> GetTileInfos(ITileSchema schema, Extent extent, string levelId)
{
// todo: move this method elsewhere.
var range = TileTransform.WorldToTile(extent, levelId, schema);
// todo: use a method to get tilerange for full schema and intersect with requested tilerange.
var startX = Math.Max(range.FirstCol, schema.GetMatrixFirstCol(levelId));
var stopX = Math.Min(range.FirstCol + range.ColCount, schema.GetMatrixFirstCol(levelId) + schema.GetMatrixWidth(levelId));
var startY = Math.Max(range.FirstRow, schema.GetMatrixFirstRow(levelId));
var stopY = Math.Min(range.FirstRow + range.RowCount, schema.GetMatrixFirstRow(levelId) + schema.GetMatrixHeight(levelId));
for (var x = startX; x < stopX; x++)
{
for (var y = startY; y < stopY; y++)
{
yield return new TileInfo
{
Extent = TileTransform.TileToWorld(new TileRange(x, y), levelId, schema),
Index = new TileIndex(x, y, levelId)
};
}
}
}
