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using System;
using System.Collections.Generic;
using System.Drawing;
using System.IO;
using System.Text;
using Emgu.CV;
using Emgu.CV.CvEnum;
using Emgu.CV.Structure;
using Emgu.CV.Util;
using UVtools.Core.Extensions;
using UVtools.Core.Operations;
namespace UVtools.Core
{
/// <summary>
/// Represent a Layer
/// </summary>
public class Layer : IEquatable<Layer>, IEquatable<uint>
{
#region Properties
/// <summary>
/// Gets the parent layer manager
/// </summary>
public LayerManager ParentLayerManager { get; set; }
/// <summary>
/// Gets the number of non zero pixels on this layer image
/// </summary>
public uint NonZeroPixelCount { get; private protected set; }
/// <summary>
/// Gets the bounding rectangle for the image area
/// </summary>
public Rectangle BoundingRectangle { get; private protected set; } = Rectangle.Empty;
/// <summary>
/// Gets the layer index
/// </summary>
public uint Index { get; }
/// <summary>
/// Gets or sets the exposure time in seconds
/// </summary>
public float ExposureTime { get; set; }
/// <summary>
/// Gets or sets the layer position on Z in mm
/// </summary>
public float PositionZ { get; set; }
private byte[] _compressedBytes;
/// <summary>
/// Gets or sets layer image compressed data
/// </summary>
public byte[] CompressedBytes
{
get => LayerManager.DecompressLayer(_compressedBytes);
set
{
_compressedBytes = LayerManager.CompressLayer(value);
IsModified = true;
if (!ReferenceEquals(ParentLayerManager, null))
ParentLayerManager.BoundingRectangle = Rectangle.Empty;
}
}
/// <summary>
/// Gets the original filename, null if no filename attached with layer
/// </summary>
public string Filename { get; set; }
/// <summary>
/// Gets if layer has been modified
/// </summary>
public bool IsModified { get; set; }
/// <summary>
/// Gets or sets a new image instance
/// </summary>
public Mat LayerMat
{
get
{
Mat mat = new Mat();
CvInvoke.Imdecode(CompressedBytes, ImreadModes.Grayscale, mat);
return mat;
}
set
{
using (var vector = new VectorOfByte())
{
CvInvoke.Imencode(".png", value, vector);
CompressedBytes = vector.ToArray();
GetBoundingRectangle(value, true);
}
}
}
/// <summary>
/// Gets a new Brg image instance
/// </summary>
public Mat BrgMat
{
get
{
Mat mat = LayerMat;
CvInvoke.CvtColor(mat, mat, ColorConversion.Gray2Bgr);
return mat;
}
}
#endregion
#region Constructor
public Layer(uint index, byte[] compressedBytes, string filename = null, LayerManager pararentLayerManager = null)
{
ParentLayerManager = pararentLayerManager;
Index = index;
Filename = filename ?? $"Layer{index}.png";
CompressedBytes = compressedBytes;
IsModified = false;
/*if (compressedBytes.Length > 0)
{
GetBoundingRectangle();
}*/
}
public Layer(uint index, Mat layerMat, string filename = null, LayerManager pararentLayerManager = null) : this(index, new byte[0], filename, pararentLayerManager)
{
LayerMat = layerMat;
IsModified = false;
}
public Layer(uint index, Stream stream, string filename = null, LayerManager pararentLayerManager = null) : this(index, stream.ToArray(), filename, pararentLayerManager)
{ }
#endregion
#region Equatables
public static bool operator ==(Layer obj1, Layer obj2)
{
return obj1.Equals(obj2);
}
public static bool operator !=(Layer obj1, Layer obj2)
{
return !obj1.Equals(obj2);
}
public static bool operator >(Layer obj1, Layer obj2)
{
return obj1.Index > obj2.Index;
}
public static bool operator <(Layer obj1, Layer obj2)
{
return obj1.Index < obj2.Index;
}
public static bool operator >=(Layer obj1, Layer obj2)
{
return obj1.Index >= obj2.Index;
}
public static bool operator <=(Layer obj1, Layer obj2)
{
return obj1.Index <= obj2.Index;
}
public bool Equals(uint other)
{
return Index == other;
}
public bool Equals(Layer other)
{
if (ReferenceEquals(null, other)) return false;
if (ReferenceEquals(this, other)) return true;
return Equals(_compressedBytes, other._compressedBytes);
}
public override bool Equals(object obj)
{
if (ReferenceEquals(null, obj)) return false;
if (ReferenceEquals(this, obj)) return true;
if (obj.GetType() != this.GetType()) return false;
return Equals((Layer)obj);
}
public override int GetHashCode()
{
return (_compressedBytes != null ? _compressedBytes.GetHashCode() : 0);
}
private sealed class IndexRelationalComparer : IComparer<Layer>
{
public int Compare(Layer x, Layer y)
{
if (ReferenceEquals(x, y)) return 0;
if (ReferenceEquals(null, y)) return 1;
if (ReferenceEquals(null, x)) return -1;
return x.Index.CompareTo(y.Index);
}
}
public static IComparer<Layer> IndexComparer { get; } = new IndexRelationalComparer();
#endregion
#region Formaters
public override string ToString()
{
return $"{nameof(Index)}: {Index}, {nameof(Filename)}: {Filename}, {nameof(IsModified)}: {IsModified}";
}
#endregion
#region Methods
public Rectangle GetBoundingRectangle(Mat mat = null, bool reCalculate = false)
{
if (NonZeroPixelCount > 0 && !reCalculate)
{
return BoundingRectangle;
}
bool needDispose = false;
if (ReferenceEquals(mat, null))
{
mat = LayerMat;
needDispose = true;
}
using (var nonZeroMat = new Mat())
{
CvInvoke.FindNonZero(mat, nonZeroMat);
NonZeroPixelCount = (uint)nonZeroMat.Rows / 2;
BoundingRectangle = CvInvoke.BoundingRectangle(nonZeroMat);
}
if (needDispose) mat.Dispose();
return BoundingRectangle;
}
public Layer PreviousLayer()
{
if (ReferenceEquals(ParentLayerManager, null) || Index == 0)
return null;
return ParentLayerManager[Index - 1];
}
public Layer NextLayer()
{
if (ReferenceEquals(ParentLayerManager, null) || Index >= ParentLayerManager.Count - 1)
return null;
return ParentLayerManager[Index + 1];
}
/// <summary>
/// Gets all islands start pixel location for this layer
/// https://www.geeksforgeeks.org/find-number-of-islands/
/// </summary>
/// <returns><see cref="List{T}"/> holding all islands coordinates</returns>
public List<LayerIssue> GetIssues(uint requiredPixelsToSupportIsland = 5)
{
if (requiredPixelsToSupportIsland == 0)
requiredPixelsToSupportIsland = 1;
// These arrays are used to
// get row and column numbers
// of 8 neighbors of a given cell
List<LayerIssue> result = new List<LayerIssue>();
List<Point> pixels = new List<Point>();
var mat = LayerMat;
var bytes = mat.GetPixelSpan<byte>();
var previousLayerImage = PreviousLayer()?.LayerMat;
var previousBytes = previousLayerImage?.GetBytes();
/*var nextLayerImage = NextLayer()?.Image;
byte[] nextBytes = null;
if (!ReferenceEquals(nextLayerImage, null))
{
if (nextLayerImage.TryGetSinglePixelSpan(out var nextPixelSpan))
{
nextBytes = MemoryMarshal.AsBytes(nextPixelSpan).ToArray();
}
}*/
// Make a bool array to
// mark visited cells.
// Initially all cells
// are unvisited
bool[,] visited = new bool[mat.Width, mat.Height];
// Initialize count as 0 and
// traverse through the all
// cells of given matrix
//uint count = 0;
// Island checker
sbyte[] rowNbr = { -1, -1, -1, 0, 0, 1, 1, 1 };
sbyte[] colNbr = { -1, 0, 1, -1, 1, -1, 0, 1 };
const uint minPixel = 10;
const uint minPixelForSupportIsland = 200;
int pixelIndex;
uint islandSupportingPixels;
if (Index > 0)
{
for (int y = 0; y < mat.Height; y++)
{
for (int x = 0; x < mat.Width; x++)
{
pixelIndex = y * mat.Width + x;
/*if (bytes[pixelIndex] == 0 && previousBytes?[pixelIndex] == byte.MaxValue &&
nextBytes?[pixelIndex] == byte.MaxValue)
{
result.Add(new LayerIssue(this, LayerIssue.IssueType.HoleSandwich, new []{new Point(x, y)}));
}*/
if (bytes[pixelIndex] > minPixel && !visited[x, y])
{
// If a cell with value 1 is not
// visited yet, then new island
// found, Visit all cells in this
// island and increment island count
pixels.Clear();
pixels.Add(new Point(x, y));
islandSupportingPixels = previousBytes[pixelIndex] >= minPixelForSupportIsland ? 1u : 0;
int minX = x;
int maxX = x;
int minY = y;
int maxY = y;
int x2;
int y2;
Queue<Point> queue = new Queue<Point>();
queue.Enqueue(new Point(x, y));
// Mark this cell as visited
visited[x, y] = true;
while (queue.Count > 0)
{
var point = queue.Dequeue();
y2 = point.Y;
x2 = point.X;
for (byte k = 0; k < 8; k++)
{
//if (isSafe(y2 + rowNbr[k], x2 + colNbr[k]))
var tempy2 = y2 + rowNbr[k];
var tempx2 = x2 + colNbr[k];
pixelIndex = tempy2 * mat.Width + tempx2;
if (tempy2 >= 0 &&
tempy2 < mat.Height &&
tempx2 >= 0 && tempx2 < mat.Width &&
bytes[pixelIndex] >= minPixel &&
!visited[tempx2, tempy2])
{
visited[tempx2, tempy2] = true;
point = new Point(tempx2, tempy2);
pixels.Add(point);
queue.Enqueue(point);
minX = Math.Min(minX, tempx2);
maxX = Math.Max(maxX, tempx2);
minY = Math.Min(minY, tempy2);
maxY = Math.Max(maxY, tempy2);
islandSupportingPixels += previousBytes[pixelIndex] >= minPixelForSupportIsland ? 1u : 0;
}
}
}
//count++;
if (islandSupportingPixels >= requiredPixelsToSupportIsland)
continue; // Not a island, bounding is strong
if (islandSupportingPixels > 0 && pixels.Count < requiredPixelsToSupportIsland &&
islandSupportingPixels >= Math.Max(1, pixels.Count / 2)) continue; // Not a island
result.Add(new LayerIssue(this, LayerIssue.IssueType.Island, pixels.ToArray(), new Rectangle(minX, minY, maxX - minX, maxY - minY)));
}
}
}
}
pixels.Clear();
// TouchingBounds Checker
for (int x = 0; x < mat.Width; x++) // Check Top and Bottom bounds
{
if (bytes[x] >= 200) // Top
{
pixels.Add(new Point(x, 0));
}
if (bytes[mat.Width * mat.Height - mat.Width + x] >= 200) // Bottom
{
pixels.Add(new Point(x, mat.Height - 1));
}
}
for (int y = 0; y < mat.Height; y++) // Check Left and Right bounds
{
if (bytes[y * mat.Width] >= 200) // Left
{
pixels.Add(new Point(0, y));
}
if (bytes[y * mat.Width + mat.Width - 1] >= 200) // Right
{
pixels.Add(new Point(mat.Width - 1, y));
}
}
if (pixels.Count > 0)
{
result.Add(new LayerIssue(this, LayerIssue.IssueType.TouchingBound, pixels.ToArray()));
}
pixels.Clear();
return result;
}
public void MutateMove(OperationMove move)
{
using (var layer = LayerMat)
{
if (move.ImageWidth == 0) move.ImageWidth = (uint)layer.Width;
if (move.ImageHeight == 0) move.ImageHeight = (uint)layer.Height;
/*layer.Transform(1.0, 1.0, move.MarginLeft - move.MarginRight, move.MarginTop-move.MarginBottom);
LayerMat = layer;*/
using (var layerRoi = new Mat(layer, move.SrcRoi))
{
using (var dstLayer = layer.CloneBlank())
{
using (var dstRoi = new Mat(dstLayer, move.DstRoi))
{
layerRoi.CopyTo(dstRoi);
LayerMat = dstLayer;
}
}
}
}
}
public void MutateResize(double xScale, double yScale)
{
using (var mat = LayerMat)
{
mat.TransformFromCenter(xScale, yScale);
LayerMat = mat;
}
}
public void MutateFlip(FlipType flipType, bool makeCopy = true)
{
using (var mat = LayerMat)
{
if (makeCopy)
{
using (Mat dst = new Mat())
{
CvInvoke.Flip(mat, dst, flipType);
var spanSrc = mat.GetPixelSpan<byte>();
var spanDst = dst.GetPixelSpan<byte>();
for (int i = 0; i < spanSrc.Length; i++)
{
if (spanDst[i] == 0) continue;
spanSrc[i] = spanDst[i];
}
LayerMat = mat;
}
}
else
{
CvInvoke.Flip(mat, mat, flipType);
}
LayerMat = mat;
}
}
public void MutateRotate(double angle = 90.0, Inter interpolation = Inter.Linear)
{
using (var mat = LayerMat)
{
var halfWidth = mat.Width / 2.0f;
var halfHeight = mat.Height / 2.0f;
using (var translateTransform = new Matrix<double>(2, 3))
{
CvInvoke.GetRotationMatrix2D(new PointF(halfWidth, halfHeight), angle, 1.0, translateTransform);
/*var rect = new RotatedRect(PointF.Empty, mat.Size, (float) angle).MinAreaRect();
translateTransform[0, 2] += rect.Width / 2.0 - mat.Cols / 2.0;
translateTransform[0, 2] += rect.Height / 2.0 - mat.Rows / 2.0;*/
/* var abs_cos = Math.Abs(translateTransform[0, 0]);
var abs_sin = Math.Abs(translateTransform[0, 1]);
var bound_w = mat.Height * abs_sin + mat.Width * abs_cos;
var bound_h = mat.Height * abs_cos + mat.Width * abs_sin;
translateTransform[0, 2] += bound_w / 2 - halfWidth;
translateTransform[1, 2] += bound_h / 2 - halfHeight;*/
CvInvoke.WarpAffine(mat, mat, translateTransform, mat.Size, interpolation);
}
LayerMat = mat;
}
}
public void MutateSolidify()
{
using (Mat mat = LayerMat)
{
using (Mat filteredMat = new Mat())
{
CvInvoke.Threshold(mat, filteredMat, 254, 255, ThresholdType.Binary); // Clean AA
using (VectorOfVectorOfPoint contours = new VectorOfVectorOfPoint())
{
using (Mat hierarchy = new Mat())
{
CvInvoke.FindContours(filteredMat, contours, hierarchy, RetrType.Ccomp, ChainApproxMethod.ChainApproxSimple);
var arr = hierarchy.GetData();
for (int i = 0; i < contours.Size; i++)
{
if ((int)arr.GetValue(0, i, 2) != -1 || (int)arr.GetValue(0, i, 3) == -1) continue;
CvInvoke.DrawContours(mat, contours, i, new MCvScalar(255), -1);
}
}
}
}
LayerMat = mat;
}
}
public void MutateErode(int iterations = 1, IInputArray kernel = null, Point anchor = default, BorderType borderType = BorderType.Default, MCvScalar borderValue = default)
{
if (anchor.IsEmpty) anchor = new Point(-1, -1);
if (ReferenceEquals(kernel, null))
{
kernel = CvInvoke.GetStructuringElement(ElementShape.Rectangle, new Size(3, 3), anchor);
}
using (Mat dst = LayerMat)
{
CvInvoke.Erode(dst, dst, kernel, anchor, iterations, borderType, borderValue);
LayerMat = dst;
}
}
public void MutateDilate(int iterations = 1, IInputArray kernel = null, Point anchor = default, BorderType borderType = BorderType.Default, MCvScalar borderValue = default)
{
if (anchor.IsEmpty) anchor = new Point(-1, -1);
if (ReferenceEquals(kernel, null))
{
kernel = CvInvoke.GetStructuringElement(ElementShape.Rectangle, new Size(3, 3), anchor);
}
using (Mat dst = LayerMat)
{
CvInvoke.Dilate(dst, dst, kernel, anchor, iterations, borderType, borderValue);
LayerMat = dst;
}
}
public void MutateOpen(int iterations = 1, IInputArray kernel = null, Point anchor = default, BorderType borderType = BorderType.Default, MCvScalar borderValue = default)
{
if (anchor.IsEmpty) anchor = new Point(-1, -1);
if (ReferenceEquals(kernel, null))
{
kernel = CvInvoke.GetStructuringElement(ElementShape.Rectangle, new Size(3, 3), anchor);
}
using (Mat dst = LayerMat)
{
CvInvoke.MorphologyEx(dst, dst, MorphOp.Open, kernel, anchor, iterations, borderType, borderValue);
LayerMat = dst;
}
}
public void MutateClose(int iterations = 1, IInputArray kernel = null, Point anchor = default, BorderType borderType = BorderType.Default, MCvScalar borderValue = default)
{
if (anchor.IsEmpty) anchor = new Point(-1, -1);
if (ReferenceEquals(kernel, null))
{
kernel = CvInvoke.GetStructuringElement(ElementShape.Rectangle, new Size(3, 3), anchor);
}
using (Mat dst = LayerMat)
{
CvInvoke.MorphologyEx(dst, dst, MorphOp.Close, kernel, anchor, iterations, borderType, borderValue);
LayerMat = dst;
}
}
public void MutateGradient(int iterations = 1, IInputArray kernel = null, Point anchor = default, BorderType borderType = BorderType.Default, MCvScalar borderValue = default)
{
if (anchor.IsEmpty) anchor = new Point(-1, -1);
if (ReferenceEquals(kernel, null))
{
kernel = CvInvoke.GetStructuringElement(ElementShape.Cross, new Size(3, 3), anchor);
}
using (Mat dst = LayerMat)
{
CvInvoke.MorphologyEx(dst, dst, MorphOp.Gradient, kernel, anchor, iterations, borderType, borderValue);
LayerMat = dst;
}
}
public void MutatePyrDownUp(BorderType borderType = BorderType.Reflect101)
{
using (Mat dst = LayerMat)
{
CvInvoke.PyrDown(dst, dst, borderType);
CvInvoke.PyrUp(dst, dst, borderType);
LayerMat = dst;
}
}
public void MutateMedianBlur(int aperture = 1)
{
using (Mat dst = LayerMat)
{
CvInvoke.MedianBlur(dst, dst, aperture);
LayerMat = dst;
}
}
public void MutateGaussianBlur(Size size = default, int sigmaX = 0, int sigmaY = 0, BorderType borderType = BorderType.Reflect101)
{
if (size.IsEmpty) size = new Size(5, 5);
using (Mat dst = LayerMat)
{
CvInvoke.GaussianBlur(dst, dst, size, sigmaX, sigmaY, borderType);
LayerMat = dst;
}
}
public void ToolPattern(OperationPattern settings)
{
using (var layer = LayerMat)
{
using (var layerRoi = new Mat(layer, settings.SrcRoi))
{
using (var dstLayer = layer.CloneBlank())
{
for (ushort col = 0; col < settings.Cols; col++)
{
for (ushort row = 0; row < settings.Rows; row++)
{
using (var dstRoi = new Mat(dstLayer, settings.GetRoi(col, row)))
{
layerRoi.CopyTo(dstRoi);
}
}
}
LayerMat = dstLayer;
}
}
}
}
public Layer Clone()
{
return new Layer(Index, CompressedBytes, Filename, ParentLayerManager);
}
#endregion
}
}
|