public BitmapPixelChanges ChangeBrightness(Layer layer, Coordinates coordinates, int toolSize,
float correctionFactor)
{
DoubleCords centeredCoords = CoordinatesCalculator.CalculateThicknessCenter(coordinates, toolSize);
Coordinates[] rectangleCoordinates = CoordinatesCalculator.RectangleToCoordinates(centeredCoords.Coords1.X,
centeredCoords.Coords1.Y,
centeredCoords.Coords2.X, centeredCoords.Coords2.Y);
BitmapPixelChanges changes = new BitmapPixelChanges(new Dictionary <Coordinates, Color>());
for (int i = 0; i < rectangleCoordinates.Length; i++)
{
if (Mode == BrightnessMode.Default)
{
if (_pixelsVisited.Contains(rectangleCoordinates[i]))
{
continue;
}
_pixelsVisited.Add(rectangleCoordinates[i]);
}
Color pixel = layer.GetPixelWithOffset(rectangleCoordinates[i].X, rectangleCoordinates[i].Y);
Color newColor = ExColor.ChangeColorBrightness(Color.FromArgb(pixel.A, pixel.R, pixel.G, pixel.B),
correctionFactor);
changes.ChangedPixels.Add(new Coordinates(rectangleCoordinates[i].X, rectangleCoordinates[i].Y),
newColor);
}
return(changes);
}
private BitmapPixelChanges ChangeBrightness(Layer layer, Coordinates coordinates, int toolSize, float correctionFactor)
{
PenTool pen = new PenTool();
Color pixel = layer.LayerBitmap.GetPixel(coordinates.X, coordinates.Y);
Color newColor = ExColor.ChangeColorBrightness(Color.FromArgb(pixel.A, pixel.R, pixel.G, pixel.B), correctionFactor);
return(pen.Draw(coordinates, newColor, toolSize));
}
/// <summary>
/// Darkens pixel color.
/// </summary>
/// <param name="bitmap">Bitmap to work on.</param>
/// <param name="coordinates">Pixel coordinates.</param>
/// <returns></returns>
private WriteableBitmap Darken(WriteableBitmap bitmap, Coordinates coordinates)
{
WriteableBitmap wb = bitmap;
Color pixel = wb.GetPixel(coordinates.X, coordinates.Y);
Color newColor = ExColor.ChangeColorBrightness(System.Drawing.Color.FromArgb(pixel.R, pixel.G, pixel.B), -0.06f);
wb.SetPixel(coordinates.X, coordinates.Y, newColor);
return(wb);
}
public void HslToRgbTest(int h, float s, float l, int r, int g, int b)
{
Color rgb = ExColor.HslToRgb(h, s, l);
int marginOfErrorR = Math.Abs(rgb.R - r);
int marginOfErrorG = Math.Abs(rgb.G - g);
int marginOfErrorB = Math.Abs(rgb.B - b);
Assert.True(marginOfErrorR <= AcceptableMaringOfError);
Assert.True(marginOfErrorG <= AcceptableMaringOfError);
Assert.True(marginOfErrorB <= AcceptableMaringOfError);
}
public void RgbToHslTest(int r, int g, int b, int h, float s, float l)
{
Tuple <int, float, float> hsl = ExColor.RgbToHsl(r, g, b);
float marginOfErrorH = Math.Abs(hsl.Item1 - h);
float marginOfErrorS = Math.Abs(hsl.Item2 - s);
float marginOfErrorL = Math.Abs(hsl.Item3 - l);
Assert.True(marginOfErrorH <= AcceptableMaringOfError);
Assert.True(marginOfErrorS <= AcceptableMaringOfError);
Assert.True(marginOfErrorL <= AcceptableMaringOfError);
}
public void ChangeColorBrightnessNewValueTest()
{
Color newColor = ExColor.ChangeColorBrightness(Colors.White, -1f);
Assert.AreEqual(Colors.Black, newColor);
}
public void ChangeColorBrightnessIsNotTheSameTest()
{
Color newColor = ExColor.ChangeColorBrightness(Colors.White, -0.1f);
Assert.AreNotEqual(Colors.White, newColor);
}
public void ChangeColorBrightnessNewValueTest()
{
SKColor newColor = ExColor.ChangeColorBrightness(SKColors.White, -100);
Assert.Equal(SKColors.Black, newColor);
}
public void ChangeColorBrightnessIsNotTheSameTest()
{
SKColor newColor = ExColor.ChangeColorBrightness(SKColors.White, -1);
Assert.NotEqual(SKColors.White, newColor);
}