C#代码创建3D模型

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2024-07-29 02:48:05 213人阅读

Demo 1

构建一个只包含单个三角形及纹理坐标的网格

using UnityEngine;using System.Collections;public class MeshTest : MonoBehaviour{    void Start()    {        MeshFilter mf = GetComponent<MeshFilter>();        Mesh mesh = new Mesh();        mf.mesh = mesh;        mesh.vertices = new Vector3[3] { new Vector3(0, 0, 0), new Vector3(0, 1, 0), new Vector3(1, 1, 0) };        mesh.uv = new Vector2[3] { new Vector2(0, 0), new Vector2(0, 1), new Vector2(1, 1) };        mesh.triangles = new int[3] { 0, 1, 2 };    }}

可以看到只有单个三角形

从上图右中可以看出，共有1个三角形，3个顶点

Demo2

构建两个三角形及纹理坐标的网格

using UnityEngine;using System.Collections;public class MyMesh : MonoBehaviour{    void Start()    {        MeshFilter mf = GetComponent<MeshFilter>();        Mesh mesh = new Mesh();        mf.mesh = mesh;        //顶点[决定绘制出来图片的scale]        mesh.vertices = new Vector3[4] { new Vector3(0, 0, 0), new Vector3(1, 0, 0), new Vector3(0, 1, 0), new Vector3(1, 1, 0) };        //三角形顶点索引的顺序[3的倍数]        mesh.triangles = new int[6] { 0, 2, 1, 2, 3, 1 };        //法线        mesh.normals = new Vector3[4] { new Vector3(0, 0, -1), new Vector3(0, 0, -1), new Vector3(0, 0, -1), new Vector3(0, 0, -1), };        //uv纹理坐标        mesh.uv = new Vector2[4] { new Vector2(0, 0), new Vector2(1, 0), new Vector2(0, 1), new Vector2(1, 1) };    }}