詳細なレイヤーの密度マップを設定します
The Terrain system uses detail layer density maps. Each map is essentially a grayscale image where each pixel value specifies the number of detail objects to procedurally place in the terrain area that corresponds to the pixel. These values depend on which DetailScatterMode is set. Because several different detail types may be used, the map is arranged into "layers" - the array indices of the layers are determined by the order of the detail types defined in the Terrain inspector (ie, when the Paint Details tool is selected).
using UnityEngine;
public class ExampleClass : MonoBehaviour { // Set all pixels in a detail map below a certain threshold to zero. void DetailMapCutoff(Terrain t, float threshold) { // Get all of layer zero. var map = t.terrainData.GetDetailLayer(0, 0, t.terrainData.detailWidth, t.terrainData.detailHeight, 0);
// For each pixel in the detail map... for (int y = 0; y < t.terrainData.detailHeight; y++) { for (int x = 0; x < t.terrainData.detailWidth; x++) { // If the pixel value is below the threshold then // set it to zero. if (map[x, y] < threshold) { map[x, y] = 0; } } }
// Assign the modified map back. t.terrainData.SetDetailLayer(0, 0, 0, map); } }
Did you find this page useful? Please give it a rating:
Thanks for rating this page!
What kind of problem would you like to report?
Thanks for letting us know! This page has been marked for review based on your feedback.
If you have time, you can provide more information to help us fix the problem faster.
Provide more information
You've told us this page needs code samples. If you'd like to help us further, you could provide a code sample, or tell us about what kind of code sample you'd like to see:
You've told us there are code samples on this page which don't work. If you know how to fix it, or have something better we could use instead, please let us know:
You've told us there is information missing from this page. Please tell us more about what's missing:
You've told us there is incorrect information on this page. If you know what we should change to make it correct, please tell us:
You've told us this page has unclear or confusing information. Please tell us more about what you found unclear or confusing, or let us know how we could make it clearer:
You've told us there is a spelling or grammar error on this page. Please tell us what's wrong:
You've told us this page has a problem. Please tell us more about what's wrong:
Thank you for helping to make the Unity documentation better!
Your feedback has been submitted as a ticket for our documentation team to review.
We are not able to reply to every ticket submitted.