/// <inheritdoc />
public override Vector3 GetNormalAt(float t)
{
Vector3 direction = Vector3.Normalize(GetTangentAt(t));
Vector3 normal = new Vector3(NormalX.GetValueAt(t), NormalY.GetValueAt(t), NormalZ.GetValueAt(t));
Vector3 up = Vector3.Cross(direction, normal);
return(Vector3.Normalize(Vector3.Cross(up, direction)));
}
/// <inheritdoc />
public override dvec3 GetNormalAt(double t)
{
dvec3 direction = GetTangentAt(t).Normalized;
dvec3 normal = new dvec3(NormalX.GetValueAt(t), NormalY.GetValueAt(t), NormalZ.GetValueAt(t));
dvec3 up = dvec3.Cross(direction, normal);
return(dvec3.Cross(up, direction).Normalized);
}