public void Apply(FastBitmap surface, Rectangle[] roi, int startIndex, int length)
{
Rectangle regionBounds = Utility.GetRegionBounds (roi, startIndex, length);
if (regionBounds != Rectangle.Intersect (surface.GetBounds (), regionBounds))
throw new ArgumentOutOfRangeException ("roi", "Region is out of bounds");
unsafe {
for (int x = startIndex; x < startIndex + length; ++x)
ApplyRectangle (surface, roi[x]);
}
}
/// <summary>
/// Returns the color count from the palette of the given image.
/// </summary>
/// <param name="image">
/// The <see cref="System.Drawing.Image"/> to get the colors from.
/// </param>
/// <returns>
/// The <see cref="int"/> representing the color count.
/// </returns>
public static int GetColorCount(Image image)
{
ConcurrentDictionary<Color, Color> colors = new ConcurrentDictionary<Color, Color>();
int width = image.Width;
int height = image.Height;
using (FastBitmap fastBitmap = new FastBitmap(image))
{
Parallel.For(
0,
height,
y =>
{
for (int x = 0; x < width; x++)
{
// ReSharper disable once AccessToDisposedClosure
Color color = fastBitmap.GetPixel(x, y);
colors.TryAdd(color, color);
}
});
}
int count = colors.Count;
colors.Clear();
return count;
}
public static int CountColors(this Image image)
{
if (image == null)
{
throw new ArgumentNullException("image");
}
HashSet<int> colors = new HashSet<int>();
FastBitmap fastBitmap = new FastBitmap(image);
fastBitmap.Lock();
// Loop through all the pixels of the image
// and add the colors to the HashSet - duplicates
// are automatically ignored by that collection type
for (int x = 0; x < image.Width; x++)
{
for (int y = 0; y < image.Height; y++)
{
// We use ToArgb because Colors are compared on more than their ARGB values - see Color class documentation on MSDN
colors.Add(fastBitmap.GetPixel(x, y).ToArgb());
}
}
fastBitmap.Unlock();
return colors.Count;
}
/// <summary>
/// Processes the given bitmap to apply the threshold.
/// </summary>
/// <param name="source">
/// The image to process.
/// </param>
/// <returns>
/// A processed bitmap.
/// </returns>
public Bitmap ProcessFilter(Bitmap source)
{
int width = source.Width;
int height = source.Height;
using (FastBitmap sourceBitmap = new FastBitmap(source))
{
Parallel.For(
0,
height,
y =>
{
for (int x = 0; x < width; x++)
{
// ReSharper disable AccessToDisposedClosure
Color color = sourceBitmap.GetPixel(x, y);
sourceBitmap.SetPixel(x, y, color.B >= this.threshold ? Color.White : Color.Black);
// ReSharper restore AccessToDisposedClosure
}
});
}
return source;
}
public void TestFastBitmapCreation()
{
Bitmap bitmap = new Bitmap(64, 64);
FastBitmap fastBitmap = new FastBitmap(bitmap);
fastBitmap.Lock();
fastBitmap.Unlock();
// Try creating a FastBitmap with different 32bpp depths
try
{
// ReSharper disable once ObjectCreationAsStatement
new FastBitmap(new Bitmap(1, 1, PixelFormat.Format32bppArgb));
// ReSharper disable once ObjectCreationAsStatement
new FastBitmap(new Bitmap(1, 1, PixelFormat.Format32bppPArgb));
// ReSharper disable once ObjectCreationAsStatement
new FastBitmap(new Bitmap(1, 1, PixelFormat.Format32bppRgb));
}
catch (ArgumentException)
{
Assert.Fail("The FastBitmap should accept any type of 32bpp pixel format bitmap");
}
// Try creating a FastBitmap with a bitmap of a bit depth different from 32bpp
Bitmap invalidBitmap = new Bitmap(64, 64, PixelFormat.Format4bppIndexed);
// ReSharper disable once ObjectCreationAsStatement
new FastBitmap(invalidBitmap);
}
/// <summary>
/// Adjusts the alpha component of the given image.
/// </summary>
/// <param name="source">
/// The <see cref="Image"/> source to adjust.
/// </param>
/// <param name="percentage">
/// The percentage value between 0 and 100 for adjusting the opacity.
/// </param>
/// <param name="rectangle">The rectangle to define the bounds of the area to adjust the opacity.
/// If null then the effect is applied to the entire image.</param>
/// <returns>
/// The <see cref="Bitmap"/> with the alpha component adjusted.
/// </returns>
/// <exception cref="ArgumentOutOfRangeException">
/// Thrown if the percentage value falls outside the acceptable range.
/// </exception>
public static Bitmap Alpha(Image source, int percentage, Rectangle? rectangle = null)
{
if (percentage > 100 || percentage < 0)
{
throw new ArgumentOutOfRangeException(nameof(percentage), "Percentage should be between 0 and 100.");
}
float factor = (float)percentage / 100;
int width = source.Width;
int height = source.Height;
// Traditional examples using a color matrix alter the rgb values also.
using (FastBitmap bitmap = new FastBitmap(source))
{
// Loop through the pixels.
Parallel.For(
0,
height,
y =>
{
for (int x = 0; x < width; x++)
{
// ReSharper disable AccessToDisposedClosure
Color color = bitmap.GetPixel(x, y);
bitmap.SetPixel(x, y, Color.FromArgb(Convert.ToInt32(color.A * factor), color.R, color.G, color.B));
// ReSharper restore AccessToDisposedClosure
}
});
}
return (Bitmap)source;
}
/// <summary> Disposes the atlas bitmap that contains animation frames, and clears
/// the list of defined animations. </summary>
public void Dispose()
{
animations.Clear();
if( bmp == null ) return;
fastBmp.Dispose(); fastBmp = null;
bmp.Dispose(); bmp = null;
}
/// <summary>
/// Applies the given image mask to the source.
/// </summary>
/// <param name="source">
/// The source <see cref="Image"/>.
/// </param>
/// <param name="mask">
/// The mask <see cref="Image"/>.
/// </param>
/// <exception cref="ArgumentException">
/// Thrown if the two images are of different size.
/// </exception>
/// <returns>
/// The masked <see cref="Bitmap"/>.
/// </returns>
public static Bitmap ApplyMask(Image source, Image mask)
{
if (mask.Size != source.Size)
{
throw new ArgumentException();
}
int width = mask.Width;
int height = mask.Height;
Bitmap toMask = new Bitmap(source);
toMask.SetResolution(source.HorizontalResolution, source.VerticalResolution);
// Loop through and replace the alpha channel
using (FastBitmap maskBitmap = new FastBitmap(mask))
{
using (FastBitmap sourceBitmap = new FastBitmap(toMask))
{
Parallel.For(
0,
height,
y =>
{
for (int x = 0; x < width; x++)
{
// ReSharper disable AccessToDisposedClosure
Color maskColor = maskBitmap.GetPixel(x, y);
Color sourceColor = sourceBitmap.GetPixel(x, y);
if (sourceColor.A != 0)
{
sourceBitmap.SetPixel(x, y, Color.FromArgb(maskColor.A, sourceColor.R, sourceColor.G, sourceColor.B));
}
// ReSharper restore AccessToDisposedClosure
}
});
}
}
// Ensure the background is cleared out on non alpha supporting formats.
Bitmap clear = new Bitmap(width, height, PixelFormat.Format32bppPArgb);
clear.SetResolution(source.HorizontalResolution, source.VerticalResolution);
using (Graphics graphics = Graphics.FromImage(clear))
{
graphics.SmoothingMode = SmoothingMode.AntiAlias;
graphics.InterpolationMode = InterpolationMode.HighQualityBicubic;
graphics.PixelOffsetMode = PixelOffsetMode.HighQuality;
graphics.CompositingQuality = CompositingQuality.HighQuality;
graphics.Clear(Color.Transparent);
graphics.DrawImageUnscaled(toMask, 0, 0, width, height);
}
toMask.Dispose();
return clear;
}
/// <summary> Disposes the atlas bitmap that contains animation frames, and clears
/// the list of defined animations. </summary>
public void Clear()
{
animations.Clear();
if( animBmp == null ) return;
animsBuffer.Dispose(); animsBuffer = null;
animBmp.Dispose(); animBmp = null;
validated = false;
}
protected unsafe virtual void RenderEffect(FastBitmap src, FastBitmap dst, Rectangle roi)
{
PixelData* src_data_ptr = (PixelData*)src.DataPtr;
int src_width = src.Width;
PixelData* dst_data_ptr = (PixelData*)dst.DataPtr;
int dst_width = dst.Width;
for (int y = roi.Y; y < roi.Bottom; ++y) {
PixelData* srcPtr = src.GetPointAddressUnchecked (src_data_ptr, src_width, roi.X, y);
PixelData* dstPtr = dst.GetPointAddressUnchecked (dst_data_ptr, dst_width, roi.X, y);
RenderLine (srcPtr, dstPtr, roi.Width);
}
}
/// <summary>
/// Provides a default implementation for performing dst = F(dst, src) or F(src) over some rectangle
/// of interest. May be slightly faster than calling the other multi-parameter Apply method, as less
/// variables are used in the implementation, thus inducing less register pressure.
/// </summary>
/// <param name="dst">The Surface to write pixels to, and from which pixels are read and used as the lhs parameter for calling the method <b>PixelData Apply(PixelData, PixelData)</b>.</param>
/// <param name="dstOffset">The pixel offset that defines the upper-left of the rectangle-of-interest for the dst Surface.</param>
/// <param name="src">The Surface to read pixels from for the rhs parameter given to the method <b>PixelData Apply(PixelData, PixelData)</b>b>.</param></param>
/// <param name="srcOffset">The pixel offset that defines the upper-left of the rectangle-of-interest for the src Surface.</param>
/// <param name="roiSize">The size of the rectangles-of-interest for all Surfaces.</param>
public void ApplyBase(FastBitmap dst, Point dstOffset, FastBitmap src, Point srcOffset, Size roiSize)
{
// Create bounding rectangles for each Surface
Rectangle dstRect = new Rectangle (dstOffset, roiSize);
if (dstRect.Width == 0 || dstRect.Height == 0)
return;
Rectangle srcRect = new Rectangle (srcOffset, roiSize);
if (srcRect.Width == 0 || srcRect.Height == 0)
return;
// Clip those rectangles to those Surface's bounding rectangles
Rectangle dstClip = Rectangle.Intersect (dstRect, dst.GetBounds ());
Rectangle srcClip = Rectangle.Intersect (srcRect, src.GetBounds ());
// If any of those Rectangles actually got clipped, then throw an exception
if (dstRect != dstClip)
throw new ArgumentOutOfRangeException
(
"roiSize",
"Destination roi out of bounds" +
string.Format (", dst.Size=({0},{1}", dst.Width, dst.Height) +
", dst.Bounds=" + dst.GetBounds ().ToString () +
", dstOffset=" + dstOffset.ToString () +
string.Format (", src.Size=({0},{1}", src.Width, src.Height) +
", srcOffset=" + srcOffset.ToString () +
", roiSize=" + roiSize.ToString () +
", dstRect=" + dstRect.ToString () +
", dstClip=" + dstClip.ToString () +
", srcRect=" + srcRect.ToString () +
", srcClip=" + srcClip.ToString ()
);
if (srcRect != srcClip)
throw new ArgumentOutOfRangeException ("roiSize", "Source roi out of bounds");
// Cache the width and height properties
int width = roiSize.Width;
int height = roiSize.Height;
// Do the work.
unsafe {
for (int row = 0; row < roiSize.Height; ++row) {
PixelData* dstPtr = dst.GetPointAddress (dstOffset.X, dstOffset.Y + row);
PixelData* srcPtr = src.GetPointAddress (srcOffset.X, srcOffset.Y + row);
Apply (dstPtr, srcPtr, width);
}
}
}
//tiles = 16 means 16 x 16 atlas
public List<Bitmap> Atlas2dInto1d(Bitmap atlas2d, int tiles, int atlassizezlimit)
{
FastBitmap orig = new FastBitmap();
orig.bmp = atlas2d;
int tilesize = atlas2d.Width / tiles;
int atlasescount = Math.Max(1, (tiles * tiles * tilesize) / atlassizezlimit);
List<Bitmap> atlases = new List<Bitmap>();
orig.Lock();
//256 x 1
FastBitmap atlas1d = null;
for (int i = 0; i < tiles * tiles; i++)
{
int x = i % tiles;
int y = i / tiles;
int tilesinatlas = (tiles * tiles / atlasescount);
if (i % tilesinatlas == 0)
{
if (atlas1d != null)
{
atlas1d.Unlock();
atlases.Add(atlas1d.bmp);
}
atlas1d = new FastBitmap();
atlas1d.bmp = new Bitmap(tilesize, atlassizezlimit);
atlas1d.Lock();
}
for (int xx = 0; xx < tilesize; xx++)
{
for (int yy = 0; yy < tilesize; yy++)
{
int c = orig.GetPixel(x * tilesize + xx, y * tilesize + yy);
atlas1d.SetPixel(xx, (i % tilesinatlas) * tilesize + yy, c);
}
}
}
atlas1d.Unlock();
atlases.Add(atlas1d.bmp);
orig.Unlock();
return atlases;
}
public Bitmap DrawImage(Color[] colors)
{
if (Width < 1 || Height < 1) {
return null;
}
var image = new Bitmap(Width, Height);
var fastBmp = new FastBitmap(image);
fastBmp.LockImage();
for (int y = 0, i = 0; y < Height; y++) {
for (var x = 0; x < Width; x++) {
fastBmp.SetPixel(x, y, colors[(int)Cells[i++].Type]);
}
}
fastBmp.UnlockImage();
return image;
}
public void TestSequentialFastBitmapLocking()
{
Bitmap bitmap = new Bitmap(64, 64);
FastBitmap fastBitmap = new FastBitmap(bitmap);
Assert.IsFalse(fastBitmap.Locked, "Immediately after creation, the FastBitmap.Locked property must be false");
fastBitmap.Lock();
Assert.IsTrue(fastBitmap.Locked, "After a successful call to .Lock(), the .Locked property must be true");
fastBitmap.Unlock();
Assert.IsFalse(fastBitmap.Locked, "After a successful call to .Lock(), the .Locked property must be false");
fastBitmap = new FastBitmap(bitmap);
fastBitmap.Lock();
fastBitmap.Unlock();
}
public Bitmap DrawImage(Color[] Colors) {
if (Width < 1 || Height < 1) {
return null;
}
Bitmap Image = new Bitmap(Width, Height);
FastBitmap fastBmp = new FastBitmap(Image);
using (Graphics g = Graphics.FromImage(Image)) {
fastBmp.LockImage();
for (int y = 0, i = 0; y < Height; y++) {
for (int x = 0; x < Width; x++) {
fastBmp.SetPixel(x, y, Colors[(int)Cells[i++].Type]);
}
}
fastBmp.UnlockImage();
}
return Image;
}
public static bool CompareColors(this Image image, Image other)
{
if (image == null || other == null)
{
throw new ArgumentNullException(image == null ? "image" : "other");
}
if (image.Size != other.Size)
{
return false;
}
FastBitmap fastImage = new FastBitmap(image);
FastBitmap fastOther = new FastBitmap(other);
try
{
fastImage.Lock();
fastOther.Lock();
for (int x = 0; x < image.Width; x++)
{
for (int y = 0; y < image.Height; y++)
{
// We use ToArgb because Colors are compared on more than their ARGB values - see Color class documentation on MSDN
if (fastImage.GetPixel(x, y).ToArgb() != fastOther.GetPixel(x, y).ToArgb())
{
return false;
}
}
}
}
finally
{
fastImage.Unlock();
fastOther.Unlock();
}
return true;
}
public static void GenerateBitmap(byte[] data, FastBitmap bmp, int startY, int dataAddress, List<Color> fourColors, int addY)
{
int index = 0;
bool onlyHalf = false;
int y = startY;
int x = 0;
int colorZeroValue = fourColors[0].ToArgb();
while (y < bmp.Height && dataAddress + index + 2 < data.Length)
{
int runLength;
int color;
bool restOfLine;
index += DecodeRle(dataAddress + index, data, out color, out runLength, ref onlyHalf, out restOfLine);
if (restOfLine)
runLength = bmp.Width - x;
Color c = fourColors[color]; // set color via the four colors
for (int i = 0; i < runLength; i++, x++)
{
if (x >= bmp.Width-1)
{
if (y < bmp.Height && x < bmp.Width && c != fourColors[0])
bmp.SetPixel(x, y, c);
if (onlyHalf)
{
onlyHalf = false;
index++;
}
x = 0;
y += addY;
break;
}
if (y < bmp.Height && c.ToArgb() != colorZeroValue)
bmp.SetPixel(x, y, c);
}
}
}
/// <summary>
/// Decode caption from the input stream
/// </summary>
/// <returns>bitmap of the decoded caption</returns>
public static Bitmap DecodeImage(PcsObject pcs, IList<OdsData> data, List<PaletteInfo> palettes)
{
if (pcs == null || data == null || data.Count == 0)
return new Bitmap(1, 1);
int w = data[0].Size.Width;
int h = data[0].Size.Height;
var bm = new FastBitmap(new Bitmap(w, h));
bm.LockImage();
BluRaySupPalette pal = DecodePalette(palettes);
int index = 0;
int ofs = 0;
int xpos = 0;
byte[] buf = data[0].Fragment.ImageBuffer;
index = 0;
do
{
int b = buf[index++] & 0xff;
if (b == 0 && index < buf.Length)
{
b = buf[index++] & 0xff;
if (b == 0)
{
// next line
ofs = (ofs / w) * w;
if (xpos < w)
ofs += w;
xpos = 0;
}
else
{
int size;
if ((b & 0xC0) == 0x40)
{
if (index < buf.Length)
{
// 00 4x xx -> xxx zeroes
size = ((b - 0x40) << 8) + (buf[index++] & 0xff);
Color c = Color.FromArgb(pal.GetArgb(0));
for (int i = 0; i < size; i++)
PutPixel(bm, ofs++, c);
xpos += size;
}
}
else if ((b & 0xC0) == 0x80)
{
if (index < buf.Length)
{
// 00 8x yy -> x times value y
size = (b - 0x80);
b = buf[index++] & 0xff;
Color c = Color.FromArgb(pal.GetArgb(b));
for (int i = 0; i < size; i++)
PutPixel(bm, ofs++, c);
xpos += size;
}
}
else if ((b & 0xC0) != 0)
{
if (index < buf.Length)
{
// 00 cx yy zz -> xyy times value z
size = ((b - 0xC0) << 8) + (buf[index++] & 0xff);
b = buf[index++] & 0xff;
Color c = Color.FromArgb(pal.GetArgb(b));
for (int i = 0; i < size; i++)
PutPixel(bm, ofs++, c);
xpos += size;
}
}
else
{
// 00 xx -> xx times 0
Color c = Color.FromArgb(pal.GetArgb(0));
for (int i = 0; i < b; i++)
PutPixel(bm, ofs++, c);
xpos += b;
}
}
}
else
{
PutPixel(bm, ofs++, b, pal);
xpos++;
}
} while (index < buf.Length);
bm.UnlockImage();
return bm.GetBitmap();
}
public void SetAtlas( Bitmap bmp )
{
Dispose();
this.bmp = bmp;
fastBmp = new FastBitmap( bmp, true );
}
unsafe void ApplyAnimation( AnimationData data )
{
data.Tick--;
if( data.Tick >= 0 ) return;
data.CurrentState++;
data.CurrentState %= data.StatesCount;
data.Tick = data.TickDelay;
TerrainAtlas1D atlas = game.TerrainAtlas1D;
int texId = ( data.TileY << 4 ) | data.TileX;
int index = atlas.Get1DIndex( texId );
int rowNum = atlas.Get1DRowId( texId );
int size = data.FrameSize;
byte* temp = stackalloc byte[size * size * 4];
FastBitmap part = new FastBitmap( size, size, size * 4, (IntPtr)temp );
FastBitmap.MovePortion( data.FrameX + data.CurrentState * size, data.FrameY, 0, 0, fastBmp, part, size );
api.UpdateTexturePart( atlas.TexIds[index], 0, rowNum * game.TerrainAtlas.elementSize, part );
}
/// <summary>
/// Performs object detection on the given frame.
/// </summary>
///
//public Rectangle[] ProcessFrame(Bitmap frame)
//{
// using (FastBitmap fastBitmap = new FastBitmap(frame))
// {
// return ProcessFrame(fastBitmap);
// }
//}
/// <summary>
/// Performs object detection on the given frame.
/// </summary>
///
public Rectangle[] ProcessFrame(Bitmap image)
{
// int colorChannel =
// image.PixelFormat == PixelFormat.Format8bppIndexed ? 0 : channel;
Rectangle[] objects;
// Creates an integral image representation of the frame
using (FastBitmap fastBitmap = new FastBitmap(image, this.classifier.Cascade.HasTiltedFeatures))
{
// Creates a new list of detected objects.
this.detectedObjects.Clear();
int width = fastBitmap.Width;
int height = fastBitmap.Height;
// Update parameters only if different size
if (steps == null || width != lastWidth || height != lastHeight)
update(width, height);
Rectangle window = Rectangle.Empty;
// For each scaling step
for (int i = 0; i < steps.Length; i++)
{
float scaling = steps[i];
// Set the classifier window scale
classifier.Scale = scaling;
// Get the scaled window size
window.Width = (int)(baseWidth * scaling);
window.Height = (int)(baseHeight * scaling);
// Check if the window is lesser than the minimum size
if (window.Width < minSize.Width || window.Height < minSize.Height)
{
// If we are searching in greater to smaller mode,
if (scalingMode == ObjectDetectorScalingMode.GreaterToSmaller)
{
break; // it won't get bigger, so we should stop.
}
else continue; // continue until it gets greater.
}
// Check if the window is greater than the maximum size
else if (window.Width > maxSize.Width || window.Height > maxSize.Height)
{
// If we are searching in greater to smaller mode,
if (scalingMode == ObjectDetectorScalingMode.GreaterToSmaller)
{
continue; // continue until it gets smaller.
}
break; // it won't get smaller, so we should stop.
}
// Grab some scan loop parameters
int xStep = window.Width >> 3;
int yStep = window.Height >> 3;
int xEnd = width - window.Width;
int yEnd = height - window.Height;
// Parallel mode. Scan the integral image searching
// for objects in the window with parallelization.
var bag = new System.Collections.Concurrent.ConcurrentBag<Rectangle>();
int numSteps = (int)Math.Ceiling((double)yEnd / yStep);
// For each pixel in the window column
var window1 = window;
Parallel.For(
0,
numSteps,
(j, options) =>
{
int y = j * yStep;
// Create a local window reference
Rectangle localWindow = window1;
localWindow.Y = y;
// For each pixel in the window row
for (int x = 0; x < xEnd; x += xStep)
{
if (options.ShouldExitCurrentIteration) return;
localWindow.X = x;
// Try to detect and object inside the window
if (classifier.Compute(fastBitmap, localWindow))
{
// an object has been detected
bag.Add(localWindow);
if (searchMode == ObjectDetectorSearchMode.Single)
options.Stop();
}
}
});
// If required, avoid adding overlapping objects at
// the expense of extra computation. Otherwise, only
// add objects to the detected objects collection.
if (searchMode == ObjectDetectorSearchMode.NoOverlap)
{
foreach (Rectangle obj in bag)
{
if (!overlaps(obj))
{
detectedObjects.Add(obj);
}
}
}
else if (searchMode == ObjectDetectorSearchMode.Single)
{
if (bag.TryPeek(out window))
{
detectedObjects.Add(window);
break;
}
}
else
{
foreach (Rectangle obj in bag)
{
detectedObjects.Add(obj);
}
}
}
}
objects = detectedObjects.ToArray();
if (searchMode == ObjectDetectorSearchMode.Average)
{
objects = match.Group(objects);
}
checkSteadiness(objects);
lastObjects = objects;
return objects; // Returns the array of detected objects.
}
/// <summary>
/// Traces the edges of a given <see cref="Image"/>.
/// </summary>
/// <param name="source">
/// The source <see cref="Image"/>.
/// </param>
/// <param name="destination">
/// The destination <see cref="Image"/>.
/// </param>
/// <param name="threshold">
/// The threshold (between 0 and 255).
/// </param>
/// <returns>
/// The a new instance of <see cref="Bitmap"/> traced.
/// </returns>
public static Bitmap Trace(Image source, Image destination, byte threshold = 0)
{
int width = source.Width;
int height = source.Height;
// Grab the edges converting to greyscale, and invert the colors.
ConvolutionFilter filter = new ConvolutionFilter(new SobelEdgeFilter(), true);
using (Bitmap temp = filter.Process2DFilter(source))
{
destination = new InvertMatrixFilter().TransformImage(temp, destination);
// Darken it slightly to aid detection
destination = Adjustments.Brightness(destination, -5);
}
// Loop through and replace any colors more white than the threshold
// with a transparent one.
using (FastBitmap destinationBitmap = new FastBitmap(destination))
{
Parallel.For(
0,
height,
y =>
{
for (int x = 0; x < width; x++)
{
// ReSharper disable AccessToDisposedClosure
Color color = destinationBitmap.GetPixel(x, y);
if (color.B >= threshold)
{
destinationBitmap.SetPixel(x, y, Color.Transparent);
}
// ReSharper restore AccessToDisposedClosure
}
});
}
// Darken it again to average out the color.
destination = Adjustments.Brightness(destination, -5);
return (Bitmap)destination;
}
/// <summary>
/// Initializes a new instance of the FastBitmapLocker struct with an initial fast bitmap object.
/// The fast bitmap object passed will be unlocked after calling Dispose() on this struct
/// </summary>
/// <param name="fastBitmap">A fast bitmap to attach to this locker which will be released after a call to Dispose</param>
public FastBitmapLocker(FastBitmap fastBitmap)
{
_fastBitmap = fastBitmap;
}
/// <summary>
/// Applies the oil painting filter.
/// </summary>
/// <param name="source">
/// The source.
/// </param>
/// <returns>
/// The <see cref="Bitmap"/>.
/// </returns>
public Bitmap ApplyFilter(Bitmap source)
{
// TODO: Make this class implement an interface?
int width = source.Width;
int height = source.Height;
int radius = this.brushSize >> 1;
Bitmap destination = new Bitmap(width, height, PixelFormat.Format32bppPArgb);
destination.SetResolution(source.HorizontalResolution, source.VerticalResolution);
using (FastBitmap sourceBitmap = new FastBitmap(source))
{
using (FastBitmap destinationBitmap = new FastBitmap(destination))
{
Parallel.For(
0,
height,
y =>
{
for (int x = 0; x < width; x++)
{
int maxIntensity = 0;
int maxIndex = 0;
int[] intensityBin = new int[this.levels];
int[] blueBin = new int[this.levels];
int[] greenBin = new int[this.levels];
int[] redBin = new int[this.levels];
byte sourceAlpha = 255;
for (int i = 0; i <= radius; i++)
{
int ir = i - radius;
int offsetY = y + ir;
// Skip the current row
if (offsetY < 0)
{
continue;
}
// Outwith the current bounds so break.
if (offsetY >= height)
{
break;
}
for (int fx = 0; fx <= radius; fx++)
{
int jr = fx - radius;
int offsetX = x + jr;
// Skip the column
if (offsetX < 0)
{
continue;
}
if (offsetX < width)
{
// ReSharper disable once AccessToDisposedClosure
Color color = sourceBitmap.GetPixel(offsetX, offsetY);
byte sourceBlue = color.B;
byte sourceGreen = color.G;
byte sourceRed = color.R;
sourceAlpha = color.A;
int currentIntensity = (int)Math.Round(((sourceBlue + sourceGreen + sourceRed) / 3.0 * (this.levels - 1)) / 255.0);
intensityBin[currentIntensity] += 1;
blueBin[currentIntensity] += sourceBlue;
greenBin[currentIntensity] += sourceGreen;
redBin[currentIntensity] += sourceRed;
if (intensityBin[currentIntensity] > maxIntensity)
{
maxIntensity = intensityBin[currentIntensity];
maxIndex = currentIntensity;
}
}
}
}
byte blue = Math.Abs(blueBin[maxIndex] / maxIntensity).ToByte();
byte green = Math.Abs(greenBin[maxIndex] / maxIntensity).ToByte();
byte red = Math.Abs(redBin[maxIndex] / maxIntensity).ToByte();
// ReSharper disable once AccessToDisposedClosure
destinationBitmap.SetPixel(x, y, Color.FromArgb(sourceAlpha, red, green, blue));
}
});
}
}
return destination;
}
private static void PutPixel(FastBitmap bmp, int index, int color, BluRaySupPalette palette)
{
int x = index % bmp.Width;
int y = index / bmp.Width;
if (x < bmp.Width && y < bmp.Height)
bmp.SetPixel(x, y, Color.FromArgb(palette.GetArgb(color)));
}
/// <summary>
/// Converts an image from a linear color-space to the equivalent sRGB color-space.
/// </summary>
/// <param name="source">
/// The <see cref="Image"/> source to convert.
/// </param>
/// <returns>
/// The <see cref="Bitmap"/>.
/// </returns>
public static Bitmap ToSRGB(Image source)
{
// Create only once and lazily.
byte[] ramp = SRGBBytes.Value;
int width = source.Width;
int height = source.Height;
using (FastBitmap bitmap = new FastBitmap(source))
{
Parallel.For(
0,
height,
y =>
{
for (int x = 0; x < width; x++)
{
// ReSharper disable once AccessToDisposedClosure
Color composite = bitmap.GetPixel(x, y);
Color linear = Color.FromArgb(composite.A, ramp[composite.R], ramp[composite.G], ramp[composite.B]);
// ReSharper disable once AccessToDisposedClosure
bitmap.SetPixel(x, y, linear);
}
});
}
return (Bitmap)source;
}
/// <summary>
/// Adjust the gamma (intensity of the light) component of the given image.
/// </summary>
/// <param name="source">
/// The <see cref="Image"/> source to adjust.
/// </param>
/// <param name="value">
/// The value to adjust the gamma by (typically between .2 and 5).
/// </param>
/// <returns>
/// The <see cref="Bitmap"/> with the gamma adjusted.
/// </returns>
/// <exception cref="ArgumentOutOfRangeException">
/// Thrown if the value falls outside the acceptable range.
/// </exception>
public static Bitmap Gamma(Image source, float value)
{
if (value > 5 || value < .1)
{
throw new ArgumentOutOfRangeException(nameof(value), "Value should be between .1 and 5.");
}
byte[] ramp = new byte[256];
for (int x = 0; x < 256; ++x)
{
byte val = ((255.0 * Math.Pow(x / 255.0, value)) + 0.5).ToByte();
ramp[x] = val;
}
int width = source.Width;
int height = source.Height;
using (FastBitmap bitmap = new FastBitmap(source))
{
Parallel.For(
0,
height,
y =>
{
for (int x = 0; x < width; x++)
{
// ReSharper disable once AccessToDisposedClosure
Color composite = bitmap.GetPixel(x, y);
Color linear = Color.FromArgb(composite.A, ramp[composite.R], ramp[composite.G], ramp[composite.B]);
// ReSharper disable once AccessToDisposedClosure
bitmap.SetPixel(x, y, linear);
}
});
}
return (Bitmap)source;
}
/// <summary>
/// Processes the given bitmap to apply the current instance of <see cref="IEdgeFilter"/>.
/// </summary>
/// <param name="source">The image to process.</param>
/// <returns>A processed bitmap.</returns>
public Bitmap ProcessFilter(Image source)
{
int width = source.Width;
int height = source.Height;
int maxWidth = width + 1;
int maxHeight = height + 1;
int bufferedWidth = width + 2;
int bufferedHeight = height + 2;
Bitmap destination = new Bitmap(width, height, PixelFormat.Format32bppPArgb);
Bitmap input = new Bitmap(bufferedWidth, bufferedHeight, PixelFormat.Format32bppPArgb);
destination.SetResolution(source.HorizontalResolution, source.VerticalResolution);
input.SetResolution(source.HorizontalResolution, source.VerticalResolution);
using (Graphics graphics = Graphics.FromImage(input))
{
// Fixes an issue with transparency not converting properly.
graphics.Clear(Color.Transparent);
Rectangle destinationRectangle = new Rectangle(0, 0, bufferedWidth, bufferedHeight);
Rectangle rectangle = new Rectangle(0, 0, width, height);
// If it's greyscale apply a colormatrix to the image.
using (ImageAttributes attributes = new ImageAttributes())
{
if (this.greyscale)
{
attributes.SetColorMatrix(ColorMatrixes.GreyScale);
}
// We use a trick here to detect right to the edges of the image.
// flip/tile the image with a pixel in excess in each direction to duplicate pixels.
// Later on we draw pixels without that excess.
using (TextureBrush tb = new TextureBrush(source, rectangle, attributes))
{
tb.WrapMode = WrapMode.TileFlipXY;
tb.TranslateTransform(1, 1);
graphics.FillRectangle(tb, destinationRectangle);
}
}
}
try
{
double[,] horizontalFilter = this.edgeFilter.HorizontalGradientOperator;
int kernelLength = horizontalFilter.GetLength(0);
int radius = kernelLength >> 1;
using (FastBitmap sourceBitmap = new FastBitmap(input))
{
using (FastBitmap destinationBitmap = new FastBitmap(destination))
{
// Loop through the pixels.
Parallel.For(
0,
bufferedHeight,
y =>
{
for (int x = 0; x < bufferedWidth; x++)
{
double rX = 0;
double gX = 0;
double bX = 0;
// Apply each matrix multiplier to the color components for each pixel.
for (int fy = 0; fy < kernelLength; fy++)
{
int fyr = fy - radius;
int offsetY = y + fyr;
// Skip the current row
if (offsetY < 0)
{
continue;
}
// Outwith the current bounds so break.
if (offsetY >= bufferedHeight)
{
break;
}
for (int fx = 0; fx < kernelLength; fx++)
{
int fxr = fx - radius;
int offsetX = x + fxr;
// Skip the column
if (offsetX < 0)
{
continue;
}
if (offsetX < bufferedWidth)
{
// ReSharper disable once AccessToDisposedClosure
Color currentColor = sourceBitmap.GetPixel(offsetX, offsetY);
double r = currentColor.R;
double g = currentColor.G;
double b = currentColor.B;
rX += horizontalFilter[fy, fx] * r;
gX += horizontalFilter[fy, fx] * g;
bX += horizontalFilter[fy, fx] * b;
}
}
}
// Apply the equation and sanitize.
byte red = rX.ToByte();
byte green = gX.ToByte();
byte blue = bX.ToByte();
Color newColor = Color.FromArgb(red, green, blue);
if (y > 0 && x > 0 && y < maxHeight && x < maxWidth)
{
// ReSharper disable once AccessToDisposedClosure
destinationBitmap.SetPixel(x - 1, y - 1, newColor);
}
}
});
}
}
}
finally
{
// We created a new image. Cleanup.
input.Dispose();
}
return destination;
}
void Convert2DTo1D( TerrainAtlas2D atlas2D, int atlasesCount, int atlas1DHeight )
{
TexIds = new int[atlasesCount];
Utils.LogDebug( "Loaded new atlas: {0} bmps, {1} per bmp", atlasesCount, elementsPerAtlas1D );
int index = 0;
using( FastBitmap atlas = new FastBitmap( atlas2D.AtlasBitmap, true, true ) ) {
for( int i = 0; i < TexIds.Length; i++ )
Make1DTexture( i, atlas, atlas2D, atlas1DHeight, ref index );
}
}
private static void PutPixel(FastBitmap bmp, int index, Color color)
{
if (color.A > 0)
{
int x = index % bmp.Width;
int y = index / bmp.Width;
if (x < bmp.Width && y < bmp.Height)
bmp.SetPixel(x, y, color);
}
}
void Make1DTexture( int i, FastBitmap atlas, TerrainAtlas2D atlas2D, int atlas1DHeight, ref int index )
{
int elemSize = atlas2D.elementSize;
using( Bitmap atlas1d = new Bitmap( atlas2D.elementSize, atlas1DHeight ) )
using( FastBitmap dst = new FastBitmap( atlas1d, true, false ) )
{
for( int index1D = 0; index1D < elementsPerAtlas1D; index1D++ ) {
FastBitmap.MovePortion( (index & 0x0F) * elemSize, (index >> 4) * elemSize,
0, index1D * elemSize, atlas, dst, elemSize );
index++;
}
TexIds[i] = graphics.CreateTexture( dst );
}
}