public void CubicInterpolationExtra()
{
var lut = new Lut {
new LutPoint(-0.009994, 1.059),
new LutPoint(-0.004998, 1.059),
new LutPoint(0, 1.060),
new LutPoint(0.005002, 1.063),
new LutPoint(0.010007, 1.065),
new LutPoint(0.015014, 1.068),
new LutPoint(0.020024, 1.073),
new LutPoint(0.025039, 1.078),
new LutPoint(0.030057, 1.083),
new LutPoint(0.03508, 1.089),
new LutPoint(0.040106, 1.095),
};
lut.UpdateBoundingBox();
var minX = lut.MinX;
var sizeX = lut.MaxX - lut.MinX;
var minY = lut.MinY;
var sizeY = lut.MaxY - lut.MinY;
lut = new Lut(lut.Select(x => new LutPoint((x.X - minX) / sizeX, (x.Y - minY) / sizeY)));
lut.UpdateBoundingBox();
BuildChart(s => {
var min = lut.MinX;
var size = lut.MaxX - lut.MinX;
for (var i = 0d; i <= 1d; i += 0.003)
{
var x = lut.MinX + size * i;
s.Points.Add(new DataPoint(x, lut.InterpolateLinear(x)));
}
s.Color = Color.Black;
}, s => {
var min = lut.MinX;
var size = lut.MaxX - lut.MinX;
for (var i = 0d; i <= 1d; i += 0.003)
{
var x = lut.MinX + size * i;
s.Points.Add(new DataPoint(x, lut.InterpolateCubic(x)));
}
s.Color = Color.Green;
});
// interpolation itself
#if !DEBUG
Assert.IsTrue(lut.InterpolateCubic(0.003) < lut.InterpolateCubic(0.001));
#endif
}
public void CubicInterpolation() {
var lut = new Lut {
new LutPoint(1d, 1d),
new LutPoint(2d, 1d),
new LutPoint(4d, 5d),
new LutPoint(5d, 3d),
};
// points
Assert.AreEqual(1d, lut.InterpolateCubic(1d));
Assert.AreEqual(1d, lut.InterpolateCubic(2d));
Assert.AreEqual(3d, lut.InterpolateCubic(5d));
// clamping
Assert.AreEqual(1d, lut.InterpolateCubic(-1d));
Assert.AreEqual(3d, lut.InterpolateCubic(5.7d));
// interpolation itself
Assert.IsTrue(lut.InterpolateCubic(1.9d) < 1d);
}
public void CubicInterpolation()
{
var lut = new Lut {
new LutPoint(1d, 1d),
new LutPoint(2d, 1d),
new LutPoint(4d, 5d),
new LutPoint(5d, 3d),
};
// points
Assert.AreEqual(1d, lut.InterpolateCubic(1d));
Assert.AreEqual(1d, lut.InterpolateCubic(2d));
Assert.AreEqual(3d, lut.InterpolateCubic(5d));
// clamping
Assert.AreEqual(1d, lut.InterpolateCubic(-1d));
Assert.AreEqual(3d, lut.InterpolateCubic(5.7d));
// interpolation itself
Assert.IsTrue(lut.InterpolateCubic(1.9d) < 1d);
}
