Mathf.PerlinNoise1D

参数

返回

float A value in the range of 0.0 and 1.0. The value might be slightly higher or lower than this range.

描述

Generates a 1D pseudo-random pattern of float values across a 2D plane.

Although the noise plane is two-dimensional, you can use a single one-dimensional line through the pattern to good effect, for example for animation effects. The result of PerlinNoise1D(x) is equivalent to PerlinNoise(x, 0), but the former is faster.

using UnityEngine;

public class Example : MonoBehaviour
{
    // "Bobbing" animation from 1D Perlin noise.

    // Range over which height varies.
    float heightScale = 1.0f;

    // Distance covered per second along X axis of Perlin plane.
    float xScale = 1.0f;


    void Update()
    {
        float height = heightScale * Mathf.PerlinNoise1D(Time.time * xScale);
        Vector3 pos = transform.position;
        pos.y = height;
        transform.position = pos;
    }
}

**注意：**返回值可能略微低于 0.0f 或略微超过 1.0f。如果 0.0 到 1.0 的范围十分重要， 则需要限制返回值。