Unity3d学习之利用Mesh绘制几何图形实现.docVIP

一、创建一个GameObject,并在上面挂两个组件(MeshFilter、MeshRenderer) 二、新建个脚本，并挂在刚才创建的GameObject上 ? ? using UnityEngine;? ? using System.Collections;? ?? ?? ?public class MeshImage : MonoBehaviour{? ?? ?? ?void Start()? ? {? ? MeshRectangle();? ? }// 创建一个矩形? ? void MeshRectangle()? ? {? ? MeshFilter mFilter = gameObject.GetComponent();? ? MeshRenderer mRen = gameObject.GetComponent();//矩形的四个顶点坐标? ? Vector3[] vertices = new Vector3[4];? ? vertices[0] = new Vector3(0, 0, 0);? ? vertices[1] = new Vector3(500, 0, 0);? ? vertices[2] = new Vector3(500, 500, 0);? ? vertices[3] = new Vector3(0, 500, 0);? ?? ?? ?//三角形顶点索引? ? int[] triangles = new int[6]{0, 1, 2, 2, 3, 0};? ?? ?? ?//每个顶点的法线? ??Vector3[] normals = new Vector3[4];? ? normals[0] = new Vector3(0, 0, -5);? ? normals[1] = new Vector3(0, 0, -5);? ? normals[2] = new Vector3(0, 0, -5);? ? normals[3] = new Vector3(0, 0, -5);? ?? ?? ?//UV贴图坐标? ? Vector2[] uvs = new Vector2[4];? ? uvs[0] = new Vector2(0, 0);? ? uvs[1] = new Vector2(1, 0);? ? uvs[2] = new Vector2(1, 1);? ? uvs[3] = new Vector2(0, 1);? ?? ?? ?//顶点颜? ? Color32[] colors32 = new Color32[4];? ? colors32[0] = new Color32(255, 0, 0, 255);? ? colors32[1] = new Color32(255, 0, 0, 255);? ? colors32[2] = new Color32(255, 0, 0, 255);? ? colors32[3] = new Color32(255, 0, 0, 255);? ? Mesh mesh = new Mesh();? ? mesh.hideFlags = HideFlags.DontSave;? ? mesh.vertices = vertices;? ? mesh.triangles = triangles;? ? mesh.colors32 = colors32;? ? mesh.uv = uvs;? ? mesh.normals = normals;? ?? ?? ?mFilter.mesh = mesh;? ? }? ? } 对象层次结构 文章出自【狗刨学习网】 运行效果(PS: 自己通过调整相机位置从不同角度去观察)