private static void MeasureIntersectionPerformance(HeightField heightfield, Vector3 start, Vector3 end, int iterations)
{
Vector3 direction = end - start;
MyIntersector intersector = new MyIntersector(heightfield);
FootprintDebugInfo debugInfo = new FootprintDebugInfo();
Intersection isec = intersector.Intersect(start, end, ref debugInfo);
int visitedPixels = debugInfo.VisitedPixels.Count;
Stopwatch sw = Stopwatch.StartNew();
for (int i = 0; i < iterations; i++)
{
Intersection intersection = intersector.Intersect(start, end);
}
sw.Stop();
Console.WriteLine("Intersection?: {0}", isec != null);
Console.WriteLine("Ray length: {0:0.0}", direction.Length);
Console.WriteLine("Visited pixels: {0}", visitedPixels);
Console.WriteLine("Iterations: {0}", iterations);
Console.WriteLine("Total time: {0} ms", sw.ElapsedMilliseconds);
Console.WriteLine("Average time: {0:0.000} ms", sw.ElapsedMilliseconds / (double)iterations);
double throughput = iterations / ((double)sw.ElapsedMilliseconds * 0.001);
Console.WriteLine("Throughput: {0:0.000} traversals/s", throughput);
Console.WriteLine("Throughput of visited pixels: {0:0.000} Mpx/s", throughput * visitedPixels * 1e-6);
}
private void ComputeIntersection(bool withDebugInfo)
{
rayStartPoint = new Point((int)rayStart.X, (int)rayStart.Y);
rayEndPoint = new Point((int)rayEnd.X, (int)rayEnd.Y);
if (withDebugInfo)
{
footprintDebugInfo = new FootprintDebugInfo();
}
else
{
footprintDebugInfo = null;
}
intersection = selectedIntersector.Intersect(rayStart, rayEnd, ref footprintDebugInfo);
intersectionLabel.Text = (intersection != null) ? intersection.Position.ToString() : "none";
isecLayerLabel.Text = (footprintDebugInfo != null) && (intersection != null) ? footprintDebugInfo.LayerOfIntersection.ToString() : "";
heightFieldPanel.Invalidate();
footprintTraversalPanel.Invalidate();
}
