Version: 2021.2
public Color GetPixel (int x, int y, int mipLevel= 0);

参数

x X coordinate of the pixel to set.
y Y coordinate of the pixel to set.
mipLevel Mip level to sample, must be in the range [0, mipCount[.

返回

Color Pixel color sampled.

描述

返回坐标 (x, y) 上的像素颜色。

If the pixel coordinates are out of bounds (larger than width/height or smaller than 0), they will be clamped or repeated based on the texture's wrap mode.

纹理坐标从左下角开始。

如果您从纹理读取大像素块, 使用 GetPixels32GetPixels 可能更快,它返回整块像素颜色。

该纹理必须在 texture import settings 中设置 read/write enabled 标志,否则此函数将失败。在使用 Crunch 纹理压缩的纹理上,GetPixel 不可用。

另请参阅:GetPixels32GetPixelsSetPixelGetPixelBilinear

// Sets the y coordinate of the transform to follow the heightmap
using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour { public Texture2D heightmap; public Vector3 size = new Vector3(100, 10, 100);

void Update() { int x = Mathf.FloorToInt(transform.position.x / size.x * heightmap.width); int z = Mathf.FloorToInt(transform.position.z / size.z * heightmap.height); Vector3 pos = transform.position; pos.y = heightmap.GetPixel(x, z).grayscale * size.y; transform.position = pos; } }