public void TestGetPreviousTileBoundary(string startDate, int tileWidth, double scale, string expectedDate)
{
var start = DateTimeOffset.Parse(startDate);
var actual = ZoomTiledSpectrograms.GetPreviousTileBoundary(tileWidth, scale, start);
var expected = DateTimeOffset.Parse(expectedDate);
Assert.AreEqual(expected, actual);
}
private static void TileOutput(DirectoryInfo outputDirectory, string fileStem, string analysisTag, FileSegment fileSegment, Image <Rgb24> image)
{
const int TileHeight = 256;
const int TileWidth = 60;
// seconds per pixel
const double Scale = 60.0;
TimeSpan scale = Scale.Seconds();
if (image.Height != TileHeight)
{
throw new InvalidOperationException("Expecting images exactly the same height as the defined tile height");
}
// if recording does not start on an absolutely aligned hour of the day
// align it, then adjust where the tiling starts from, and calculate the offset for the super tile (the gap)
var recordingStartDate = fileSegment.TargetFileStartDate.Value;
// TODO: begin remove duplicate code
var timeOfDay = recordingStartDate.TimeOfDay;
var previousAbsoluteHour = TimeSpan.FromSeconds(Math.Floor(timeOfDay.TotalSeconds / (Scale * TileWidth)) * (Scale * TileWidth));
var gap = timeOfDay - previousAbsoluteHour;
var tilingStartDate = recordingStartDate - gap;
var tilingStartDate2 = ZoomTiledSpectrograms.GetPreviousTileBoundary(TileWidth, Scale, recordingStartDate);
var padding = recordingStartDate - tilingStartDate2;
Debug.Assert(tilingStartDate == tilingStartDate2, "tilingStartDate != tilingStartDate2: these methods should be equivalent");
// TODO: end remove duplicate code
var tilingProfile = new AbsoluteDateTilingProfile(fileStem, analysisTag, tilingStartDate, TileHeight, TileWidth);
// pad out image so it produces a whole number of tiles
// this solves the asymmetric right padding of short audio files
var width = (int)(Math.Ceiling(image.Width / Scale) * Scale);
var tiler = new Tiler(outputDirectory, tilingProfile, Scale, width, 1.0, image.Height);
// prepare super tile
var tile = new TimeOffsetSingleLayerSuperTile(
padding,
SpectrogramType.Index,
scale,
image.CloneAs <Rgba32>(),
fileSegment.SegmentStartOffset ?? TimeSpan.Zero);
tiler.Tile(tile);
}
public void TestLeftPaddingInLowerLayers()
{
const int TileWidth = 180;
var startDate = new DateTimeOffset(2014, 05, 29, 08, 13, 58, TimeSpan.FromHours(10));
var boundary = ZoomTiledSpectrograms.GetPreviousTileBoundary(TileWidth, 0.1, startDate);
var padding = startDate - boundary;
var profile = new AbsoluteDateTilingProfile(
"Filename",
"Tile",
boundary,
256,
TileWidth);
var tiler = new Tiler(
this.outputDirectory.ToDirectoryEntry(),
profile,
new SortedSet <double>()
{
60.0, 0.1
},
60.0,
1440,
new SortedSet <double>()
{
1, 1
},
1.0,
256);
var testBitmap = new Bitmap(1200, 256);
using (var graphics = Graphics.FromImage(testBitmap))
{
var points = new[]
{
new Point(0, 0), new Point(180, 256), new Point(360, 0), new Point(540, 256), new Point(720, 0),
new Point(900, 256), new Point(1080, 0), new Point(1260, 256),
};
graphics.DrawLines(
Pens.Red,
points);
}
var superTile = new TimeOffsetSingleLayerSuperTile(
padding,
SpectrogramType.Index,
0.1.Seconds(),
testBitmap,
0.Seconds());
tiler.Tile(superTile);
////Debug.WriteLine(this.outputDirectory.FullName);
////Debug.WriteLine(this.outputDirectory.GetFiles().Length);
var actualFiles = this.outputDirectory.GetFiles().OrderBy(x => x.Name).ToArray();
Assert.AreEqual(8, actualFiles.Length);
var expectedFiles = new[]
{
"Filename__Tile_20140528T221348Z_0.1.png",
"Filename__Tile_20140528T221406Z_0.1.png",
"Filename__Tile_20140528T221424Z_0.1.png",
"Filename__Tile_20140528T221442Z_0.1.png",
"Filename__Tile_20140528T221500Z_0.1.png",
"Filename__Tile_20140528T221518Z_0.1.png",
"Filename__Tile_20140528T221536Z_0.1.png",
"Filename__Tile_20140528T221554Z_0.1.png",
};
var expectedImages =
expectedFiles
.OrderBy(x => x)
.Select((x, i) => testBitmap.Crop(new Rectangle((i * TileWidth) - 100, 0, TileWidth, 256)))
.ToArray();
for (var i = 0; i < expectedImages.Length; i++)
{
Assert.AreEqual(expectedFiles[i], actualFiles[i].Name);
var expectedImage = expectedImages[i];
var actualImage = Image.FromFile(actualFiles[i].FullName);
var areEqual = TilerTests.BitmapEquals(expectedImage, (Bitmap)actualImage);
Assert.IsTrue(areEqual, "Bitmaps were not equal {0}, {1}", expectedFiles[i], actualFiles[i]);
}
}
public void TestLeftPaddingInLowerLayers()
{
const int TileWidth = 180;
var startDate = new DateTimeOffset(2014, 05, 29, 08, 13, 58, TimeSpan.FromHours(10));
var boundary = ZoomTiledSpectrograms.GetPreviousTileBoundary(TileWidth, 0.1, startDate);
var padding = startDate - boundary;
var profile = new AbsoluteDateTilingProfile(
"Filename",
"Tile",
boundary,
256,
TileWidth);
var tiler = new Tiler(
this.outputDirectory,
profile,
new SortedSet <double>()
{
60.0, 0.1
},
60.0,
1440,
new SortedSet <double>()
{
1, 1
},
1.0,
256);
var testBitmap = new Image <Rgba32>(1200, 256);
testBitmap.Mutate(graphics =>
{
var points = new[]
{
new PointF(0, 0), new Point(180, 256), new Point(360, 0), new Point(540, 256), new Point(720, 0),
new PointF(900, 256), new Point(1080, 0), new Point(1260, 256),
};
graphics.DrawLines(
new GraphicsOptions(),
Brushes.Solid(Color.Red),
1,
points);
});
var superTile = new TimeOffsetSingleLayerSuperTile(
padding,
SpectrogramType.Index,
0.1.Seconds(),
testBitmap,
0.Seconds());
tiler.Tile(superTile);
////Trace.WriteLine(this.outputDirectory.FullName);
////Trace.WriteLine(this.outputDirectory.GetFiles().Length);
var actualFiles = this.outputDirectory.GetFiles().OrderBy(x => x.Name).ToArray();
Assert.AreEqual(8, actualFiles.Length);
var expectedFiles = new[]
{
"Filename__Tile_20140528T221348Z_0.1.png",
"Filename__Tile_20140528T221406Z_0.1.png",
"Filename__Tile_20140528T221424Z_0.1.png",
"Filename__Tile_20140528T221442Z_0.1.png",
"Filename__Tile_20140528T221500Z_0.1.png",
"Filename__Tile_20140528T221518Z_0.1.png",
"Filename__Tile_20140528T221536Z_0.1.png",
"Filename__Tile_20140528T221554Z_0.1.png",
};
var expectedImages =
expectedFiles
.OrderBy(x => x)
.Select((x, i) => testBitmap.CropInverse(new Rectangle((i * TileWidth) - 100, 0, TileWidth, 256)))
.ToArray();
for (var i = 0; i < expectedImages.Length; i++)
{
Assert.AreEqual(expectedFiles[i], actualFiles[i].Name);
var expectedImage = expectedImages[i];
var actualImage = Image.Load <Rgba32>(actualFiles[i].FullName);
Assert.That.ImageMatches(expectedImages[i], actualImage, message: $"Bitmaps were not equal {expectedImages[i]}, {actualFiles[i]}");
}
}
