void InitDraw()
{
// Draw all points
using (DrawingContext dc = _drawingVisual.RenderOpen())
{
// Clear background
DrawUtil.ClearBackground(dc, Rect);
// Draw all points
DrawUtil.DrawDots(dc, _algorithm.Points, Rect);
dc.Close();
}
_renderTargetBitmap.Render(_drawingVisual);
}
//
void FrameUpdate(object sender, EventArgs e)
{
if (_isRunningFrameUpdate)
{
return;
}
_isRunningFrameUpdate = true;
// Movement range
var max = SliderBottom;
var min = -max;
_stopwatch.Start();
if (IsMouseMoveEnabled)
{
// Draw all points always
// Draw on the drawing context
using (DrawingContext dc = _drawingVisual.RenderOpen())
{
// --- logic
_animation.SelectMovingDots(DotsMovingCount); // Select p to be moved
_animation.UpdateMovingPosition(min, max); // Update moving pos
_elapsedAlgoUpdateKnn = string.Format("msec {0}", _algorithm.UpdateKnn(_origin, Configuration)); // Update KNN
var nns = _algorithm.Knn.GetNNs();
var notnns = PointUtil.Exclusive(nns, _algorithm.Points);
// --- Draw
DrawUtil.ClearBackground(dc, Rect); // Clear all
DrawUtil.DrawDots(dc, notnns, Rect); // Draw all not nearest neighbors
DrawUtil.DrawDots(dc, nns, Rect, ShapeType.NearestNeighbor); // Draw updated KNN
DrawUtil.DrawDots(dc, new[] { _origin }, Rect, ShapeType.Selected);
DrawUtil.DrawGrid(dc, SliderLeft == 1, Rect, Pens.PenGrid2);
dc.Close();
}
}
else
{
// Draw updates only
// Draw on the drawing context
using (DrawingContext dc = _drawingVisual.RenderOpen())
{
_animation.SelectMovingDots(DotsMovingCount);
// Clear prev frame knn
DrawUtil.RedrawDots(dc, new[] { _algorithm.Knn.Origin }, Rect, ShapeType.Selected);
DrawUtil.RedrawDots(dc, _algorithm.Knn.GetNNs(), Rect, ShapeType.NearestNeighbor);
DrawUtil.ClearDots(dc, _animation.Moving, Rect); // Clear prev frame moving dots
_animation.UpdateMovingPosition(min, max); // Update moving pos
_elapsedAlgoUpdateKnn = string.Format("msec {0}", _algorithm.UpdateKnn(_origin, Configuration)); // Update KNN
var nns = _algorithm.Knn.GetNNs();
// Draw updated KNN
DrawUtil.DrawDots(dc, _animation.Moving, Rect); // Draw updated pos
DrawUtil.DrawDots(dc, nns, Rect, ShapeType.NearestNeighbor);
DrawUtil.DrawDots(dc, new[] { _origin }, Rect, ShapeType.Selected);
DrawUtil.DrawGrid(dc, SliderLeft == 1, Rect);
dc.Close();
}
}
_stopwatch.Stop();
var sb = new StringBuilder();
sb.AppendFormat("\n\nK Nearest Neighbors: \n\n");
sb.AppendFormat("{0}\n", _algorithm.Strategy.Name);
sb.AppendFormat("Origin: {0}\n", _algorithm.Knn.Origin);
//sb.AppendFormat(_algorithm.Knn.NNs.Aggregate("", (a, b) => a + b + "\n"));
sb.AppendFormat("K: {0}\n", _algorithm.Knn.K);
sb.AppendFormat("NNs: {0}\n", _algorithm.Knn.NNs.Count);
sb.AppendFormat("MaxDistance: {0}\n", _algorithm.Rectangle.MaxDistance);
sb.AppendFormat("Square: {0}\n\n", _algorithm.Rectangle.Square);
sb.AppendFormat("SliderTop\nmsec per frame: {0}\n\n", SliderTop);
sb.AppendFormat("SliderLeft\nshow grid: {0}\n\n", SliderLeft);
sb.AppendFormat("SliderBottom\nmovement speed: {0}\n\n", SliderBottom);
sb.AppendFormat("dots: {0}\n", _algorithm.Points.Count);
sb.AppendFormat("moving dots: {0}\n", _animation.Moving.Count);
sb.AppendFormat("grid: {0};{1}\n", _algorithm.Rectangle.XGrid, _algorithm.Rectangle.YGrid);
sb.AppendFormat("Draw enabled: {0}\n", DrawUtil.IsDrawEnabled);
sb.AppendFormat("\nElapsed Algo Init: \n{0}\n", _elapsedAlgoInit);
sb.AppendFormat("\nElapsed Algo update Knn: \n{0}\n", _elapsedAlgoUpdateKnn);
sb.AppendFormat("\n\nTime per frame: \n{0}\n", _stopwatch.Elapsed.ToString());
_textBlock.Text = sb.ToString();
_dispatcherTimer.Interval = TimeSpan.FromMilliseconds(SliderTop); // update
_renderTargetBitmap.Render(_drawingVisual); // Render the drawing to the bitmap
_stopwatch.Reset();
_isRunningFrameUpdate = false;
}
