public void TestStaticFn_SmoothStep_iii ()
{
var a = new Vector2( -30, -30 );
var b = new Vector2( +30, +30 );
Single one = 1;
Single i;
Maths.FromFraction(1755, 64, out i); // 27.421875
Single j;
Maths.FromFraction( 165, 8, out j); // 20.625
Single k;
Maths.FromFraction( 705, 64, out k); // 11.015625
Single a0 = 0;
Single a1 = (one * 1) / 8;
Single a2 = (one * 2) / 8;
Single a3 = (one * 3) / 8;
Single a4 = (one * 4) / 8;
Single a5 = (one * 5) / 8;
Single a6 = (one * 6) / 8;
Single a7 = (one * 7) / 8;
Single a8 = 1;
Vector2 r0 = a;
Vector2 r1 = new Vector2( -i, -i );
Vector2 r2 = new Vector2( -j, -j );
Vector2 r3 = new Vector2( -k, -k );
Vector2 r4 = Vector2.Zero;
Vector2 r5 = new Vector2( k, k );
Vector2 r6 = new Vector2( j, j );
Vector2 r7 = new Vector2( i, i );
Vector2 r8 = b;
var knownResults = new List<Tuple<Single, Vector2>>
{
new Tuple<Single, Vector2>( a0, r0 ),
new Tuple<Single, Vector2>( a1, r1 ),
new Tuple<Single, Vector2>( a2, r2 ),
new Tuple<Single, Vector2>( a3, r3 ),
new Tuple<Single, Vector2>( a4, r4 ),
new Tuple<Single, Vector2>( a5, r5 ),
new Tuple<Single, Vector2>( a6, r6 ),
new Tuple<Single, Vector2>( a7, r7 ),
new Tuple<Single, Vector2>( a8, r8 ),
};
for (Int32 idx = 0; idx < knownResults.Count; ++idx)
{
Vector2 result;
Single amount = knownResults[idx].Item1;
Vector2 expected = knownResults[idx].Item2;
Vector2.SmoothStep (
ref a, ref b, ref amount, out result);
AssertEqualWithinReason(result, expected);
}
}