unity用vectrosity插件画一条3D的线

vectrosity5.4.2插件下载地址：http://download.csdn.net/detail/qq_34818497/9864911

话不多说，代码如下：

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using Vectrosity;

public class MyDrawLine : MonoBehaviour {

    private int m_lineName = 0;
    private VectorLine m_line;
    private bool m_isDraw = true;

    public Texture2D m_lineStart;
    public Texture2D m_lineMiddle;
    public Texture2D m_lineEnd;

// Use this for initialization
void Start () {
        VectorLine.SetEndCap(m_lineName.ToString(), EndCap.Both, m_lineMiddle, m_lineEnd, m_lineStart);
        m_line = new VectorLine(m_lineName.ToString(), new List<Vector3>(), 20.0f, LineType.Continuous, Joins.Weld);
        m_line.endCap = m_lineName.ToString();
    }

    // Update is called once per frame
    void Update () {

        if (Input.GetMouseButtonDown(1))
        {
            m_isDraw = !m_isDraw;
        }

        if (!m_isDraw)
        {
            if (m_line.Selected(Input.mousePosition))
            {
                m_line.SetColor(Color.black);
            }
            else if (!m_line.Selected(Input.mousePosition))
            {
                m_line.SetColor(Color.white);
            }
            ////m_line.points2.Clear();
            return;
        }

        if (Input.GetMouseButtonDown(0))
        {
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit hitinfo;
            if (Physics.Raycast(ray, out hitinfo))
            {
                if (hitinfo.collider.gameObject.tag == "road")
                {
                    m_line.points3.Add(hitinfo.point);
                }
            }

            // Start off with 2 points
            if (m_line.points3.Count == 1)
            {
                m_line.points3.Add(Vector3.zero);
            }
        }

        // The last line point should always be where the mouse is; only draw when there are enough points
        if (m_line.points3.Count >= 2)
        {
            Ray ray = Camera.main.ScreenPointToRay(Input.mousePosition);
            RaycastHit hitinfo;
            if (Physics.Raycast(ray, out hitinfo))
            {
                if (hitinfo.collider.gameObject.tag == "road")
                {
                    m_line.points3[m_line.points3.Count - 1] = hitinfo.point;
                    m_line.Draw3D();
                }
            }
        }
    }
}

也可以用vectorline.SetLine3D的静态方法画3D线。