/// <summary>
/// This doesn't follow any kind of sane random distribution, so use this for testing purposes only.
/// <para>5% of the time, mantissa is 0.</para>
/// <para>10% of the time, mantissa is round.</para>
/// </summary>
public static BigDouble RandomBigDouble(double absMaxExponent)
{
if (Random.NextDouble() * 20 < 1)
{
return(BigDouble.Normalize(0, 0));
}
var mantissa = Random.NextDouble() * 10;
if (Random.NextDouble() * 10 < 1)
{
mantissa = Math.Round(mantissa);
}
mantissa *= Math.Sign(Random.NextDouble() * 2 - 1);
var exponent = (long)(Math.Floor(Random.NextDouble() * absMaxExponent * 2) - absMaxExponent);
return(BigDouble.Normalize(mantissa, exponent));
}
public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
{
EditorGUI.BeginProperty(position, label, property);
position = EditorGUI.PrefixLabel(position, GUIUtility.GetControlID(FocusType.Passive), label);
var indent = EditorGUI.indentLevel;
EditorGUI.indentLevel = 0;
const float gapWidth = 10;
var mantissaRect = new Rect(position.x, position.y, (position.width - gapWidth) * 0.66f, position.height);
var gapRect = new Rect(mantissaRect.x + mantissaRect.width, position.y, gapWidth, position.height);
var exponentRect = new Rect(gapRect.x + gapRect.width, position.y, (position.width - gapWidth) * 0.33f,
position.height);
var mantissaProperty = property.FindPropertyRelative("mantissa");
var exponentProperty = property.FindPropertyRelative("exponent");
EditorGUI.BeginChangeCheck();
var mantissa = EditorGUI.DoubleField(mantissaRect, mantissaProperty.doubleValue,
new GUIStyle(EditorStyles.numberField)
{
alignment = TextAnchor.MiddleRight
});
EditorGUI.LabelField(gapRect, "e", new GUIStyle(GUIStyle.none)
{
alignment = TextAnchor.MiddleCenter
});
var exponent = EditorGUI.LongField(exponentRect, exponentProperty.longValue);
if (EditorGUI.EndChangeCheck())
{
var normalized = BigDouble.Normalize(mantissa, exponent);
mantissaProperty.doubleValue = normalized.Mantissa;
exponentProperty.longValue = normalized.Exponent;
}
EditorGUI.indentLevel = indent;
EditorGUI.EndProperty();
}