Mathf.Epsilon 小正数

static var Epsilon : float

Description描述

A tiny floating point value (Read Only).

一个很小的浮点数值。（只读）['epsilən]

The smallest value that a float can have different from zero.

最小的浮点值，不同于0。

With the following rules:
以下规则：

-     anyValue + Epsilon = anyValue
-     anyValue - Epsilon = anyValue
-     0 + Epsilon = Epsilon
-     0 - Epsilon = -Epsilon

A value Between any number and Epsilon will result in an arbitrary number due to truncating errors.

一个在任意数和Epsilon的之间值将导致在任意数发生截断误差。

参考： Mathf.Approximately

using UnityEngine;
using System.Collections;

public class example : MonoBehaviour {
	bool isEqual(float a, float b) {
		if (a >= b - Mathf.Epsilon && a <= b + Mathf.Epsilon)
			return true;
		else
			return false;
	}
}

// Compares two floating point numbers and return true if they are the same number.
//比较两个浮点数并返回true，如果它们是相同的数
// See also Mathf.Approximately, which compares floating point numbers so you dont have
// to create a function to compare them.
//参见Mathf.Approximately，在那里比较浮点数因此你不必创建一个函数来比较它们

function isEqual(a: float, b : float) {
	if(a >= b-Mathf.Epsilon && a <= b + Mathf.Epsilon)
		return true;
	else
		return false;
}

最后修改：2011年2月21日 Monday 11:56