Texture2D.GetPixel

Description

Returns pixel color at coordinates (x, y).

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

If you are reading a large block of pixels from the texture, it may be faster to use GetPixels which returns a whole block of pixel colors.

The texture must have the Read/Write Enabled flag set in the import settings, otherwise this function will fail. See Also: GetPixels, SetPixel, GetPixelBilinear.

	// Sets the y coordinate of the transform to follow the heightmap
	var heightmap : Texture2D;
	var size = Vector3 (100, 10, 100);
	function Update () {
		var x : int = transform.position.x / size.x * heightmap.width;
		var z : int = transform.position.z / size.z * heightmap.height;
		transform.position.y = heightmap.GetPixel(x, z).grayscale * size.y;
	}

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    public Texture2D heightmap;
    public Vector3 size = new Vector3(100, 10, 100);
    void Update() {
        int x = transform.position.x / size.x * heightmap.width;
        int z = transform.position.z / size.z * heightmap.height;
        transform.position.y = heightmap.GetPixel(x, z).grayscale * size.y;
    }
}

import UnityEngine
import System.Collections

public class ExampleClass(MonoBehaviour):

	public heightmap as Texture2D

	public size as Vector3 = Vector3(100, 10, 100)

	def Update() as void:
		x as int = ((transform.position.x / size.x) * heightmap.width)
		z as int = ((transform.position.z / size.z) * heightmap.height)
		transform.position.y = (heightmap.GetPixel(x, z).grayscale * size.y)