public void Test_Canvas_ReduceResolution() { Canvas canvas = new Canvas(new Resolution(8, 5)); #region Filling canvas for (int y = 0; y < 4; y++) for (int x = 0; x < 6; x++) { if((x == 4 && y == 0) || (x == 5 && y == 0) || (x == 5 && y == 1)) canvas.SetColor(x, y, Color.Green); else if ((x == 0 && y == 2) || (x == 1 && y == 2) || (x == 2 && y == 2) || (x == 3 && y == 2) || (x == 2 && y == 3)) canvas.SetColor(x, y, Color.Blue); else canvas.SetColor(x, y, Color.Red); } #endregion Canvas expectedCanvas = new Canvas(new Resolution(3, 2)); #region Filling expected canvas for(int y = 0; y < 2; y++) for (int x = 0; x < 3; x++) { if (x == 2 && y == 0) expectedCanvas.SetColor(x, y, Color.FromArgb(255, 63, 96, 0)); else if (x == 1 && y == 1) expectedCanvas.SetColor(x, y, Color.FromArgb(255, 63, 0, 191)); else if (x == 0 && y == 1) expectedCanvas.SetColor(x, y, Color.FromArgb(255, 127, 0, 127)); else expectedCanvas.SetColor(x, y, Color.FromArgb(255, 255, 0, 0)); } #endregion Canvas actualCanvas = canvas.ReduceResolution(3, 2, 2); Assert.IsTrue(actualCanvas.Width == expectedCanvas.Width && actualCanvas.Height == expectedCanvas.Height); for (int y = 0; y < actualCanvas.Height; y++) for (int x = 0; x < actualCanvas.Width; x++) { Color actualColor = actualCanvas.GetColor(x, y); Color expectedColor = expectedCanvas.GetColor(x, y); Assert.IsTrue(actualColor == expectedColor); } }
public Canvas Generate(Canvas canvas, Settings settings) { if (settings.Palette == null || settings.Palette.Count == 0) throw new NullReferenceException("Check that Palette isn't null or it has any colors"); if (settings.CellsCount <= 0) throw new WrongInitializedException("Square count has to be initialized and more than zero"); if (canvas.Width < settings.CellsCount) throw new WrongResolutionException("Image's width must be higher or input less cells"); int cellWidth = canvas.Width / settings.CellsCount; if (canvas.Height < cellWidth) throw new WrongResolutionException("Image's height must be higher"); int newHeight = canvas.Height / cellWidth; int newWidth = settings.CellsCount; Canvas tempCanvas = canvas.ReduceResolution(newWidth, newHeight, cellWidth); List<Color> colors = settings.Palette.GetAllColorsList(); //Parallel.For with Partition Parallel.ForEach(Partitioner.Create(0, tempCanvas.Height), rangeHeight => { for (int y = rangeHeight.Item1; y < rangeHeight.Item2; y++) Parallel.ForEach(Partitioner.Create(0, tempCanvas.Width), rangeWidth => { for (int x = rangeWidth.Item1; x < rangeWidth.Item2; x++) { Color oldColor = tempCanvas.GetColor(x, y); Color colorAmoung = ChooseColorAmoung(oldColor, colors); tempCanvas.SetColor(x, y, colorAmoung); } }); }); #region Just Parallel.For /* Parallel.For(0, tempCanvas.Height, y => { Parallel.For(0, tempCanvas.Width, x => { Color oldColor = tempCanvas.GetColor(x, y); Color colorAmoung = ChooseColorAmoung(oldColor, colors); tempCanvas.SetColor(x, y, colorAmoung); }); }); */ #endregion #region Obsolete realization /*for (int y = 0; y < tempCanvas.Height; y++) for (int x = 0; x < tempCanvas.Width; x++) { Color oldColor = tempCanvas.GetColor(x, y); Color colorAmoung = ChooseColorAmoung(oldColor, colors); tempCanvas.SetColor(x, y, colorAmoung); } */ #endregion return tempCanvas; }