private static Brush GetTiledSamples(Point[] edgePoints, ISOMInput[] samples, SOMNode node, int tileWidth, int tileHeight, Action <DrawTileArgs> drawTile)
{
var dimensions = GetTileImagePositions(samples.Length);
// The image tiles will be drawn spiraling out from the center. Order the list so that tiles closest to the node are first (so that
// they are drawn closer to the center of the spiral)
ISOMInput[] orderedSamples = samples.
OrderBy(o => (o.Weights - node.Weights).LengthSquared).
ToArray();
//int tilehalf_left = tileWidth / 2;
//int tilehalf_top = tileHeight / 2;
//int tilehalf_right = tileWidth - tilehalf_left;
//int tilehalf_bot = tileHeight - tilehalf_top;
int imageWidth = (dimensions.Item2.X - dimensions.Item1.X + 1) * tileWidth;
int imageHeight = (dimensions.Item2.Y - dimensions.Item1.Y + 1) * tileHeight;
//int offsetX = (Math.Abs(dimensions.Item1.X) * tileWidth) + tilehalf_left;
//int offsetY = (Math.Abs(dimensions.Item1.Y) * tileHeight) + tilehalf_top;
//TODO: Get the AABB of edgePoints. If the bitmap will be bigger than the aabb, then draw just enough to totally fill the polygon
//NOTE: Copied from UtilityWPF.GetBitmap
WriteableBitmap bitmap = new WriteableBitmap(imageWidth, imageHeight, UtilityWPF.DPI, UtilityWPF.DPI, PixelFormats.Pbgra32, null); // may want Bgra32 if performance is an issue
int pixelWidth = bitmap.Format.BitsPerPixel / 8;
int stride = bitmap.PixelWidth * pixelWidth; // this is the length of one row of pixels
byte[] pixels = new byte[bitmap.PixelHeight * stride];
DrawingVisual dv = new DrawingVisual();
using (DrawingContext ctx = dv.RenderOpen())
{
for (int cntr = 0; cntr < orderedSamples.Length; cntr++)
{
int x = (dimensions.Item3[cntr].X - dimensions.Item1.X) * tileWidth;
int y = (dimensions.Item3[cntr].Y - dimensions.Item1.Y) * tileWidth;
DrawTileArgs args = new DrawTileArgs(orderedSamples[cntr], tileWidth, tileHeight, pixels, x, y, stride, pixelWidth);
drawTile(args);
}
}
bitmap.WritePixels(new Int32Rect(0, 0, bitmap.PixelWidth, bitmap.PixelHeight), pixels, stride, 0);
return(new ImageBrush(bitmap)
{
Stretch = Stretch.None,
});
}
private static Brush GetTiledSamples(Point[] edgePoints, ISOMInput[] samples, SOMNode node, int tileWidth, int tileHeight, Action<DrawTileArgs> drawTile)
{
var dimensions = GetTileImagePositions(samples.Length);
// The image tiles will be drawn spiraling out from the center. Order the list so that tiles closest to the node are first (so that
// they are drawn closer to the center of the spiral)
ISOMInput[] orderedSamples = samples.
OrderBy(o => MathND.GetDistanceSquared(o.Weights, node.Weights)).
ToArray();
//int tilehalf_left = tileWidth / 2;
//int tilehalf_top = tileHeight / 2;
//int tilehalf_right = tileWidth - tilehalf_left;
//int tilehalf_bot = tileHeight - tilehalf_top;
int imageWidth = (dimensions.Item2.X - dimensions.Item1.X + 1) * tileWidth;
int imageHeight = (dimensions.Item2.Y - dimensions.Item1.Y + 1) * tileHeight;
//int offsetX = (Math.Abs(dimensions.Item1.X) * tileWidth) + tilehalf_left;
//int offsetY = (Math.Abs(dimensions.Item1.Y) * tileHeight) + tilehalf_top;
//TODO: Get the AABB of edgePoints. If the bitmap will be bigger than the aabb, then draw just enough to totally fill the polygon
//NOTE: Copied from UtilityWPF.GetBitmap
WriteableBitmap bitmap = new WriteableBitmap(imageWidth, imageHeight, UtilityWPF.DPI, UtilityWPF.DPI, PixelFormats.Pbgra32, null); // may want Bgra32 if performance is an issue
int pixelWidth = bitmap.Format.BitsPerPixel / 8;
int stride = bitmap.PixelWidth * pixelWidth; // this is the length of one row of pixels
byte[] pixels = new byte[bitmap.PixelHeight * stride];
DrawingVisual dv = new DrawingVisual();
using (DrawingContext ctx = dv.RenderOpen())
{
for (int cntr = 0; cntr < orderedSamples.Length; cntr++)
{
int x = (dimensions.Item3[cntr].X - dimensions.Item1.X) * tileWidth;
int y = (dimensions.Item3[cntr].Y - dimensions.Item1.Y) * tileWidth;
DrawTileArgs args = new DrawTileArgs(orderedSamples[cntr], tileWidth, tileHeight, pixels, x, y, stride, pixelWidth);
drawTile(args);
}
#region DISCARD
//int index = 0;
//for (int y = 0; y < colorsHeight; y++)
//{
// for (int x = 0; x < colorsWidth; x++)
// {
// int gray = (grayColors[index] * grayValueScale).ToInt_Round();
// if (gray < 0) gray = 0;
// if (gray > 255) gray = 255;
// byte grayByte = Convert.ToByte(gray);
// Color color = Color.FromRgb(grayByte, grayByte, grayByte);
// ctx.DrawRectangle(new SolidColorBrush(color), null, new Rect(x * scaleX, y * scaleY, scaleX, scaleY));
// index++;
// }
//}
#endregion
}
bitmap.WritePixels(new Int32Rect(0, 0, bitmap.PixelWidth, bitmap.PixelHeight), pixels, stride, 0);
return new ImageBrush(bitmap)
{
Stretch = Stretch.None,
};
}
