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RandomExtensions.cs
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RandomExtensions.cs
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// Copyright (c) 2023 Koji Hasegawa.
// This software is released under the MIT License.
using UnityEngine;
namespace TestHelper.Random
{
/// <summary>
/// Some useful methods for testing.
/// </summary>
public static class RandomExtensions
{
private const int Digits = 3;
/// <summary>
/// Return a random screen position.
/// </summary>
/// <returns>A random screen position.</returns>
public static Vector2Int NextScreenPosition(this IRandom random)
{
var width = random.Next(Screen.width);
var height = random.Next(Screen.height);
return new Vector2Int(width, height);
}
/// <summary>
/// Return a random normalized <c>Vector2</c>.
/// </summary>
/// <returns>A random normalized <c>Vector2</c>.</returns>
public static Vector2 NextNormalizedVector2(this IRandom random)
{
var denominator = Mathf.Pow(10, Digits);
var max = (int)denominator;
var min = -max;
var x = random.Next(min, max) / denominator;
var y = random.Next(min, max) / denominator;
return new Vector2(x, y).normalized;
}
/// <summary>
/// Return a random normalized <c>Vector3</c>.
/// </summary>
/// <returns>A random normalized <c>Vector3</c>.</returns>
public static Vector3 NextNormalizedVector3(this IRandom random)
{
var denominator = Mathf.Pow(10, Digits);
var max = (int)denominator;
var min = -max;
var x = random.Next(min, max) / denominator;
var y = random.Next(min, max) / denominator;
var z = random.Next(min, max) / denominator;
return new Vector3(x, y, z).normalized;
}
}
}