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This article mainly explains "Unity how to achieve object trajectory rendering", the content of the article is simple and clear, easy to learn and understand, the following please follow the editor's ideas slowly in depth, together to study and learn "Unity how to achieve object trajectory rendering" bar!

This paper gives you an example to share the specific code for drawing the trajectory of unity objects for your reference. The specific contents are as follows.

① create empty, named LineRender

② create a new material in Assects, select Shader as Sprites/Default, and set the track color, as shown below:

③ selects the object created in ①, adds the Line Render attribute, and assigns the new material in ② to the object, as shown below:

Expand Line Render and drag Width to set the track width

④ creates a c # script and drags it onto a moving object with the following code:

Using System.Collections;using System.Collections.Generic;using UnityEngine;using System;public class draw_orbit: MonoBehaviour {/ / draw track component public LineRenderer line; public List points; / / read the location information of the local txt file, change the position of the object string [] text_buf; int I = 0 / / Start is called before the first frame update void Start () {/ / object position control method according to your own needs. Here, I read the location information from the txt file and update TextAsset ta = Resources.Load ("satellite_orbit") as TextAsset; string text = ta.text; text_buf = text.Split ('\ n') } / / Update is called once per frame void Update () {try {if (I)

< text_buf.Length) { // 读取坐标信息 string[] line = text_buf[i].Split(','); float x = Convert.ToSingle(line[0])/1000; float y = Convert.ToSingle(line[1])/1000; float z = Convert.ToSingle(line[2])/1000; // 更新物体位置 transform.position = new Vector3(x, y, z); // 绘制轨迹 AddPoints(); } i++; } catch(Exception ex) { Debug.Log(ex.Message); } } // 绘制轨迹方法 public void AddPoints() { Vector3 pt = transform.position; if (points.Count >

0 & (pt-lastPoint) .magnitude

< 0.1f) return; if (pt != new Vector3(0, 0, 0)) points.Add(pt); line.positionCount = points.Count; if (points.Count >

0) line.SetPosition (points.Count-1, lastPoint);} public Vector3 lastPoint {get {if (points = = null) return Vector3.zero; return (points [points.Count-1]);}}

When ⑤ selects the moving object, you can see that the Line Render attribute appears in its Script component, and drag the object in the ①, as shown below:

When you run the ⑥ scenario, you can see the following effect:

Thank you for your reading, the above is the content of "how to draw the trajectory of an object with Unity". After the study of this article, I believe you have a deeper understanding of how to draw the trajectory of an object with Unity, and the specific use needs to be verified in practice. Here is, the editor will push for you more related knowledge points of the article, welcome to follow!

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