public void Invert()
{
var maxDelta = 0.00001m;
var deltas = new List <decimal>();
// Scalability and edge cases
foreach (var m in testCases)
{
Matrix testCase = m;
FloatMatrix floatMatrix = MathConverter.Convert(testCase);
FloatMatrix expected;
FloatMatrix.Invert(ref floatMatrix, out expected);
Matrix actual;
if (float.IsInfinity(expected.M11) || float.IsNaN(expected.M11))
{
expected = new FloatMatrix();
}
Matrix.Invert(ref testCase, out actual);
bool success = true;
foreach (decimal delta in GetDeltas(expected, actual))
{
deltas.Add(delta);
success &= delta <= maxDelta;
}
Assert.True(success, string.Format("Precision: Matrix3x3Invert({0}): Expected {1} Actual {2}", testCase, expected, actual));
}
output.WriteLine("Max error: {0} ({1} times precision)", deltas.Max(), deltas.Max() / Fix64.Precision);
output.WriteLine("Average precision: {0} ({1} times precision)", deltas.Average(), deltas.Average() / Fix64.Precision);
}
public void BenchmarkInvert()
{
var swf = new Stopwatch();
var swd = new Stopwatch();
var deltas = new List <decimal>();
foreach (var m in testCases)
{
Matrix testCase = m;
for (int i = 0; i < 10000; i++)
{
FloatMatrix floatMatrix = MathConverter.Convert(testCase);
FloatMatrix expected;
swf.Start();
FloatMatrix.Invert(ref floatMatrix, out expected);
swf.Stop();
Matrix actual;
swd.Start();
Matrix.Invert(ref testCase, out actual);
swd.Stop();
if (float.IsInfinity(expected.M11) || float.IsNaN(expected.M11))
{
expected = new FloatMatrix();
}
foreach (decimal delta in GetDeltas(expected, actual))
{
deltas.Add(delta);
}
}
}
output.WriteLine("Max error: {0} ({1} times precision)", deltas.Max(), deltas.Max() / Fix64.Precision);
output.WriteLine("Average precision: {0} ({1} times precision)", deltas.Average(), deltas.Average() / Fix64.Precision);
output.WriteLine("Fix64.Invert time = {0}ms, float.Invert time = {1}ms", swf.ElapsedMilliseconds, swd.ElapsedMilliseconds);
}
