public HistogramEqualization(FitsImage image, double min, double max)
{
this.min = min;
this.max = max;
factor = max - min;
Histogram = image.ComputeHistogram(buckets);
maxHistogramValue = Histogram[buckets];
lookup = new Byte[buckets];
int totalCounts = image.Width * image.Height;
int sum = 0;
for (int i = 0; i < buckets; i++)
{
sum += Histogram[i];
lookup[i] = (Byte)(Math.Min(255, ((sum * 255.0)) / totalCounts) + .5);
}
}
public override void LoadData(TourDocument tourDoc, string filename)
{
if (extension.ToLowerCase().StartsWith(".fit"))
{
System.Html.Data.Files.Blob blob = tourDoc.GetFileBlob(filename.Replace(".txt", extension));
FitsImage fi = new FitsImage("image.fit", blob, DoneLoading);
imageSet.WcsImage = fi;
if (max > 0 || min > 0)
{
fi.lastBitmapMax = max;
fi.lastBitmapMin = min;
fi.lastScale = lastScale;
}
}
else
{
loaded = true;
}
}
public override void LoadData(TourDocument tourDoc, string filename)
{
if (extension.ToLowerCase().StartsWith(".fit"))
{
System.Html.Data.Files.Blob blob = tourDoc.GetFileBlob(filename.Replace(".txt", extension));
FitsImage fi;
if (RenderContext.UseGlVersion2)
{
fi = new FitsImage(imageSet, "image.fit", blob, DoneLoading);
}
else
{
fi = new FitsImageJs(imageSet, "image.fit", blob, DoneLoading);
}
imageSet.WcsImage = fi;
}
else
{
loaded = true;
}
}
public override bool CreateGeometry(RenderContext renderContext)
{
base.CreateGeometry(renderContext);
if (GeometryCreated)
{
return(true);
}
if (dataset.WcsImage is FitsImage && RenderContext.UseGlVersion2)
{
FitsImage fitsImage = dataset.WcsImage as FitsImage;
texture2d = PrepDevice.createTexture();
PrepDevice.bindTexture(GL.TEXTURE_2D, texture2d);
PrepDevice.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_S, GL.CLAMP_TO_EDGE);
PrepDevice.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_T, GL.CLAMP_TO_EDGE);
PrepDevice.texImage2D(GL.TEXTURE_2D, 0, GL.R32F, (int)fitsImage.SizeX, (int)fitsImage.SizeY, 0, GL.RED, GL.FLOAT, fitsImage.dataUnit);
PrepDevice.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.NEAREST);
PrepDevice.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.NEAREST);
Width = fitsImage.SizeX;
Height = fitsImage.SizeY;
}
else
{
WcsImage wcsImage = dataset.WcsImage as WcsImage;
if (wcsImage != null)
{
Bitmap bmp = wcsImage.GetBitmap();
texture2d = bmp.GetTexture();
if (bmp.Height != wcsImage.SizeY)
{
PixelCenterY += bmp.Height - wcsImage.SizeY;
}
if (renderContext.gl != null)
{
Height = bmp.Height;
Width = bmp.Width;
}
}
else
{
Height = texture.NaturalHeight;
Width = texture.NaturalWidth;
}
}
GeometryCreated = true;
for (int i = 0; i < 4; i++)
{
RenderTriangleLists[i] = new List <RenderTriangle>();
}
ComputeMatrix();
double latMin = 0 + (ScaleY * (Height - PixelCenterY));
double latMax = 0 - (ScaleY * PixelCenterY);
double lngMin = 0 + (ScaleX * PixelCenterX);
double lngMax = 0 - (ScaleX * (Width - PixelCenterX));
TopLeft = GeoTo3dTan(latMin, lngMin);
BottomRight = GeoTo3dTan(latMax, lngMax);
TopRight = GeoTo3dTan(latMin, lngMax);
BottomLeft = GeoTo3dTan(latMax, lngMin);
Vector3d topCenter = Vector3d.Lerp(TopLeft, TopRight, .5f);
Vector3d bottomCenter = Vector3d.Lerp(BottomLeft, BottomRight, .5f);
Vector3d center = Vector3d.Lerp(topCenter, bottomCenter, .5f);
Vector3d rightCenter = Vector3d.Lerp(TopRight, BottomRight, .5f);
Vector3d leftCenter = Vector3d.Lerp(TopLeft, BottomLeft, .5f);
if (renderContext.gl == null)
{
vertexList = new List <PositionTexture>();
vertexList.Add(PositionTexture.CreatePosSize(TopLeft, 0, 0, Width, Height));
vertexList.Add(PositionTexture.CreatePosSize(TopRight, 1, 0, Width, Height));
vertexList.Add(PositionTexture.CreatePosSize(BottomLeft, 0, 1, Width, Height));
vertexList.Add(PositionTexture.CreatePosSize(BottomRight, 1, 1, Width, Height));
childTriangleList = new List <Triangle>();
if (dataset.BottomsUp)
{
childTriangleList.Add(Triangle.Create(0, 1, 2));
childTriangleList.Add(Triangle.Create(2, 1, 3));
}
else
{
childTriangleList.Add(Triangle.Create(0, 2, 1));
childTriangleList.Add(Triangle.Create(2, 3, 1));
}
int count = 3;
while (count-- > 1)
{
List <Triangle> newList = new List <Triangle>();
foreach (Triangle tri in childTriangleList)
{
tri.SubDivide(newList, vertexList);
}
childTriangleList = newList;
}
double miter = .6 / (Width / 256);
foreach (Triangle tri in childTriangleList)
{
PositionTexture p1 = vertexList[tri.A];
PositionTexture p2 = vertexList[tri.B];
PositionTexture p3 = vertexList[tri.C];
RenderTriangleLists[0].Add(RenderTriangle.CreateWithMiter(p1, p2, p3, texture, Level, miter));
}
}
else
{
//process vertex list
VertexBuffer = PrepDevice.createBuffer();
PrepDevice.bindBuffer(GL.ARRAY_BUFFER, VertexBuffer);
Float32Array f32array = new Float32Array(9 * 5);
float[] buffer = (float[])(object)f32array;
int index = 0;
index = AddVertex(buffer, index, PositionTexture.CreatePos(bottomCenter, .5, 1)); //0
index = AddVertex(buffer, index, PositionTexture.CreatePos(BottomLeft, 0, 1)); //1
index = AddVertex(buffer, index, PositionTexture.CreatePos(BottomRight, 1, 1)); //2
index = AddVertex(buffer, index, PositionTexture.CreatePos(center, .5, .5)); //3
index = AddVertex(buffer, index, PositionTexture.CreatePos(leftCenter, 0, .5)); //4
index = AddVertex(buffer, index, PositionTexture.CreatePos(rightCenter, 1, .5)); //5
index = AddVertex(buffer, index, PositionTexture.CreatePos(topCenter, .5, 0)); //6
index = AddVertex(buffer, index, PositionTexture.CreatePos(TopLeft, 0, 0)); //7
index = AddVertex(buffer, index, PositionTexture.CreatePos(TopRight, 1, 0)); //8
PrepDevice.bufferData(GL.ARRAY_BUFFER, f32array, GL.STATIC_DRAW);
// process index buffers
for (int i = 0; i < 4; i++)
{
index = 0;
TriangleCount = 2;
Uint16Array ui16array = new Uint16Array(TriangleCount * 3);
UInt16[] indexArray = (UInt16[])(object)ui16array;
switch (i)
{
case 0:
indexArray[index++] = 7;
indexArray[index++] = 4;
indexArray[index++] = 6;
indexArray[index++] = 4;
indexArray[index++] = 3;
indexArray[index++] = 6;
break;
case 1:
indexArray[index++] = 6;
indexArray[index++] = 5;
indexArray[index++] = 8;
indexArray[index++] = 6;
indexArray[index++] = 3;
indexArray[index++] = 5;
break;
case 2:
indexArray[index++] = 4;
indexArray[index++] = 0;
indexArray[index++] = 3;
indexArray[index++] = 4;
indexArray[index++] = 1;
indexArray[index++] = 0;
break;
case 3:
indexArray[index++] = 3;
indexArray[index++] = 2;
indexArray[index++] = 5;
indexArray[index++] = 3;
indexArray[index++] = 0;
indexArray[index++] = 2;
break;
}
IndexBuffers[i] = PrepDevice.createBuffer();
PrepDevice.bindBuffer(GL.ELEMENT_ARRAY_BUFFER, IndexBuffers[i]);
PrepDevice.bufferData(GL.ELEMENT_ARRAY_BUFFER, ui16array, GL.STATIC_DRAW);
}
}
return(true);
}
public virtual void RequestImage()
{
if (dataset.Extension.ToLowerCase().IndexOf("fits") > -1)
{
if (!Downloading && !ReadyToRender)
{
Downloading = true;
if (RenderContext.UseGlVersion2)
{
fitsImage = new FitsImageTile(dataset, URL, delegate(WcsImage wcsImage)
{
Downloading = false;
errored = fitsImage.errored;
TileCache.RemoveFromQueue(this.Key, true);
if (!fitsImage.errored)
{
// For a non-HiPS tiled FITS, this is our
// mechanism for notifying the layer creator
// that the initial FITS data have loaded and
// the FitsProperties can be trusted.
if (Level == 0)
{
dataset.FitsProperties.FireMainImageLoaded(fitsImage);
fitsImage.ApplyDisplaySettings();
}
texReady = true;
ReadyToRender = texReady && (DemReady || !demTile);
RequestPending = false;
MakeTexture();
}
});
}
else
{
fitsImage = FitsImageJs.CreateTiledFits(dataset, URL, delegate(WcsImage wcsImage)
{
if (Level == 0)
{
dataset.FitsProperties.FireMainImageLoaded(fitsImage);
}
texReady = true;
Downloading = false;
errored = fitsImage.errored;
ReadyToRender = texReady && (DemReady || !demTile);
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
texture2d = wcsImage.GetBitmap().GetTexture();
});
}
}
}
else
{
if (Dataset.WcsImage != null)
{
texReady = true;
Downloading = false;
errored = false;
ReadyToRender = true;
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
return;
}
if (!Downloading && !ReadyToRender)
{
Downloading = true;
texture = (ImageElement)Document.CreateElement("img");
CrossDomainImage xdomimg = (CrossDomainImage)(object)texture;
texture.AddEventListener("load", delegate(ElementEvent e)
{
texReady = true;
Downloading = false;
errored = false;
ReadyToRender = texReady && (DemReady || !demTile);
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
MakeTexture();
}, false);
texture.AddEventListener("error", delegate(ElementEvent e)
{
if (!texture.HasAttribute("proxyattempt"))
{
texture.SetAttribute("proxyattempt", true);
// NOTE: `this.URL` is dynamically generated using
// URLHelpers.rewrite(). Say that we request tiles from
// example.com, which requires CORS proxying. Say also
// that this callback is called for a request to a tile
// that should in fact be available. If a different
// request fails before this callback is called,
// activateProxy() will be called on the example.com
// domain, making it so that `this.URL` in the following
// call goes through the proxy, making it so that
// `new_url` is null, making it so that this tile is
// erroneously marked as failed when it should not be.
// The solution: make sure to check proxy activation
// with the *original* request URL, `texture.Src`, not
// the one that may have been updated, `this.URL`.
string new_url = URLHelpers.singleton.activateProxy(texture.Src);
if (new_url != null)
{ // null => don't bother: we know that the proxy won't help
texture.Src = new_url;
return;
}
}
Downloading = false;
ReadyToRender = false;
errored = true;
RequestPending = false;
TileCache.RemoveFromQueue(this.Key, true);
}, false);
xdomimg.crossOrigin = "anonymous";
texture.Src = this.URL;
}
}
}
public ImageSetLayer LoadFitsLayer(string url, string name, bool gotoTarget, ImagesetLoaded loaded)
{
if (string.IsNullOrWhiteSpace(name))
{
name = LayerManager.GetNextFitsName();
}
ImageSetLayer imagesetLayer = new ImageSetLayer();
FitsImage img = new FitsImage(url, null, delegate(WcsImage wcsImage)
{
int width = (int)wcsImage.SizeX;
int height = (int)wcsImage.SizeY;
Imageset imageset = Imageset.Create(
wcsImage.Description,
Util.GetHashCode(wcsImage.Filename).ToString(),
ImageSetType.Sky,
BandPass.Visible,
ProjectionType.SkyImage,
Util.GetHashCode(wcsImage.Filename),
0,
0,
256,
wcsImage.ScaleY,
".tif",
wcsImage.ScaleX > 0,
"",
wcsImage.CenterX,
wcsImage.CenterY,
wcsImage.Rotation,
false,
"",
false,
false,
1,
wcsImage.ReferenceX,
wcsImage.ReferenceY,
wcsImage.Copyright,
wcsImage.CreditsUrl,
"",
"",
0,
""
);
imageset.WcsImage = wcsImage;
imagesetLayer.ImageSet = imageset;
LayerManager.AddFitsImageSetLayer(imagesetLayer, name);
LayerManager.LoadTree();
if (gotoTarget)
{
WWTControl.Singleton.GotoRADecZoom(wcsImage.CenterX / 15, wcsImage.CenterY, 10 * wcsImage.ScaleY * height, false);
}
if (loaded != null)
{
loaded(imagesetLayer);
}
});
return(imagesetLayer);
}
public void LoadFits(string url)
{
FitsImage img = new FitsImage(url, null, OnWcsLoad);
}
