Unity3D MeshLine 画线_unity生成 3d线

一、算法

           画线可以简化为正八棱柱

          算法为：

          两点A，B 向量AB 求向量AB的任意垂直向量，旋转垂直向量获得正半边形的顶点，通过顶点绘制三角形网格

二、实现

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
 
// 画线
public class MeshLine 
{
    private Material material; // 材质
    private RepeatSegmentMesh segment_mesh;
    private RenderObject render_object;
    private MeshEnableFlag flag;
 
    public MeshLine()
    {
        this.material = GlobalAppData.Instance.Data.line_material;
        render_object = RenderObject.Create(null, null, Vector3.zero, Quaternion.identity);
        render_object.mesh_render.material = material;
        render_object.mesh_render.castShadows = true;
        render_object.mesh_render.receiveShadows = true;
        render_object.go.name = "MeshLine";
        
        //Light light = render_object.mesh_filter.GetComponent<Lighting>(