public Image CreateUpperRightToLowerLeftTriangleBlockMosaic(int blockSize, Bitmap image)
{
if (blockSize <= 0)
{
return null;
}
var newBitmap = new Bitmap(image);
Graphics graphics = Graphics.FromImage(newBitmap);
for (int column = 0; column < image.Height; column += blockSize)
{
for (int row = 0; row < image.Width; row += blockSize)
{
var averagingArea = new Rectangle(row, column, blockSize, blockSize);
Color averageTopColor = PixelFactory.GetAverageColorOfTopRightTriangle(averagingArea, image);
var averageTopBrush = new SolidBrush(averageTopColor);
Point[] topPoints = this.getTopRightTrianglePoints(blockSize, row, column);
graphics.FillPolygon(averageTopBrush, topPoints);
Color averageBottomColor = PixelFactory.GetAverageColorOfBottomLeftTriangle(averagingArea, image);
var averageBottomBrush = new SolidBrush(averageBottomColor);
Point[] botPoints = this.getBottomLeftTrianglePoints(blockSize, row, column);
graphics.FillPolygon(averageBottomBrush, botPoints);
}
}
return newBitmap;
}
/// <summary>
/// Creates the picture mosaic.
/// </summary>
/// <param name="blockSize">Size of the block.</param>
/// <param name="bitmap">The image.</param>
/// <param name="palette">The palette.</param>
/// <returns></returns>
public Image CreatePictureMosaic(int blockSize, Bitmap bitmap, ImageList.ImageCollection palette)
{
Graphics g = Graphics.FromImage(bitmap);
List<Image> images = this.copyPalette(palette);
List<Color> colors = this.averagePaletteColors(images);
for (int y = 0; y < bitmap.Height; y += blockSize)
{
for (int x = 0; x < bitmap.Width; x += blockSize)
{
var dstRect = new Rectangle(x, y, blockSize, blockSize);
Color averageColor = PixelFactory.GetAverageColorOfSquareBlock(dstRect, bitmap);
List<Image> closeMatches = this.getBestMatchPaletteImage(averageColor, images, colors);
Image randomMatch = this.getRandomBestMatch(closeMatches);
this.previousImage = randomMatch;
var srcRect = new Rectangle(0, 0, randomMatch.Width, randomMatch.Height);
g.DrawImage(randomMatch, dstRect, srcRect, GraphicsUnit.Pixel);
}
}
g.Dispose();
return bitmap;
}
private List<Color> averagePaletteColors(IEnumerable<Image> images)
{
var averageColors = new List<Color>();
foreach (Image image in images)
{
var srcRect = new Rectangle(0, 0, image.Width, image.Height);
Color currentAverage = PixelFactory.GetAverageColorOfSquareBlock(srcRect, (Bitmap) image);
averageColors.Add(currentAverage);
}
return averageColors;
}
/// <summary>
/// Creates the square block mosaic.
/// </summary>
/// <param name="blockSize">Size of the block.</param>
/// <param name="image">The image.</param>
/// <returns></returns>
public Image CreateSquareBlockMosaic(int blockSize, Bitmap image)
{
if (blockSize <= 0)
{
return null;
}
var newBitmap = new Bitmap(image);
Graphics graphics = Graphics.FromImage(newBitmap);
for (int column = 0; column < image.Height; column += blockSize)
{
for (int row = 0; row < image.Width; row += blockSize)
{
var averagingArea = new Rectangle(row, column, blockSize, blockSize);
Color averageColor = PixelFactory.GetAverageColorOfSquareBlock(averagingArea, image);
var averageBrush = new SolidBrush(averageColor);
graphics.FillRectangle(averageBrush, row, column, blockSize, blockSize);
}
}
return newBitmap;
}
