/// <summary>
/// Flattens a <see cref="Vector4"/> into an array of floats, similar to how the <see cref="IFlattenableData{T}"/>
/// interface works.
/// </summary>
/// <param name="vector4">The vector to flatten.</param>
/// <returns>An array of floats.</returns>
public static float[] Flatten(this Vector4 vector4)
{
float[] outArr = new float[4];
vector4.CopyTo(outArr);
return(outArr);
}
public void Vector4CopyToTest()
{
Vector4 v1 = new Vector4(2.5f, 2.0f, 3.0f, 3.3f);
Single[] a = new Single[5];
Single[] b = new Single[4];
v1.CopyTo(a, 1);
v1.CopyTo(b);
Assert.Equal(0.0f, a[0]);
Assert.Equal(2.5f, a[1]);
Assert.Equal(2.0f, a[2]);
Assert.Equal(3.0f, a[3]);
Assert.Equal(3.3f, a[4]);
Assert.Equal(2.5f, b[0]);
Assert.Equal(2.0f, b[1]);
Assert.Equal(3.0f, b[2]);
Assert.Equal(3.3f, b[3]);
}
public void FloatLayout()
{
var color = new RgbaVector(1F, 2, 3, 4);
Vector4 colorBase = Unsafe.As <RgbaVector, Vector4>(ref Unsafe.Add(ref color, 0));
float[] ordered = new float[4];
colorBase.CopyTo(ordered);
Assert.Equal(1, ordered[0]);
Assert.Equal(2, ordered[1]);
Assert.Equal(3, ordered[2]);
Assert.Equal(4, ordered[3]);
}
Vector4[] Reflect(Vector4[] a, float v1, float v2, int n)
{
Vector4[] a1 = new Vector4[a.Length];
Vector4[] a2 = new Vector4[a.Length];
a.CopyTo(a1, 0);
a.CopyTo(a2, 0);
for (var i = 0; i < a.Length; i++)
{
a1[i][n] = v1;
a2[i][n] = v2;
}
Vector4[].Reverse(a2);
a = new Vector4[2 * a.Length];
a1.CopyTo(a, 0);
a2.CopyTo(a, a1.Length);
return(a);
}
public void Vector4CopyToTest()
{
Vector4 v1 = new Vector4(2.5f, 2.0f, 3.0f, 3.3f);
float[] a = new float[5];
float[] b = new float[4];
Assert.Throws<NullReferenceException>(() => v1.CopyTo(null, 0));
Assert.Throws<ArgumentOutOfRangeException>(() => v1.CopyTo(a, -1));
Assert.Throws<ArgumentOutOfRangeException>(() => v1.CopyTo(a, a.Length));
Assert.Throws<ArgumentException>(() => v1.CopyTo(a, a.Length - 2));
v1.CopyTo(a, 1);
v1.CopyTo(b);
Assert.Equal(0.0f, a[0]);
Assert.Equal(2.5f, a[1]);
Assert.Equal(2.0f, a[2]);
Assert.Equal(3.0f, a[3]);
Assert.Equal(3.3f, a[4]);
Assert.Equal(2.5f, b[0]);
Assert.Equal(2.0f, b[1]);
Assert.Equal(3.0f, b[2]);
Assert.Equal(3.3f, b[3]);
}
Vector4[] Reflect(Vector4[] a, float v1, float v2, int n)
{
Vector4[] a1 = new Vector4[ a.Length ];
Vector4[] a2 = new Vector4[ a.Length ];
a.CopyTo( a1, 0 );
a.CopyTo( a2, 0 );
for( var i=0; i<a.Length; i++ ){
a1[i][n] = v1;
a2[i][n] = v2;
}
Vector4[].Reverse( a2 );
a = new Vector4[ 2 * a.Length ];
a1.CopyTo( a, 0 );
a2.CopyTo( a, a1.Length );
return a;
}
