百度网盘网页版,优化网站排名,南宁网站建设电话咨询,网站生成海报功能怎么做的mesh就是组成3d物体的三角形们。
mesh由顶点组成的三角形组成#xff0c;三角形的大小 并不 需要一样#xff0c;由顶点之间的位置决定。
mesh可以是一个或者多个面。
贴图的原点在左下角#xff0c;uv是贴图的坐标#xff0c;数量和顶点数一样#xff08;不是100%确定…
mesh就是组成3d物体的三角形们。
mesh由顶点组成的三角形组成三角形的大小 并不 需要一样由顶点之间的位置决定。
mesh可以是一个或者多个面。
贴图的原点在左下角uv是贴图的坐标数量和顶点数一样不是100%确定比如前后左右4个面贴图最终如何封闭我还不知道是贴图和顶点的对应关系。
新建空场景把一下代码放到main camera
using System;
using System.Collections;
using System.Collections.Generic;using UnityEngine;
#if UNITY_EDITOR
using UnityEditor;
#endifpublic class codeMesh2 : MonoBehaviour
{GUIStyle fontStyle new GUIStyle();string msg - - ;// Start is called before the first frame updateVector3 center new Vector3();GameObject o;bool ready false;//int startCalled 0;Camera c;string err ;int moveRage 25; int moveRage2 0;int moveRage2_1 0;Mesh mesh null;public int width 10;public int height 10;public Texture aText null;/// summary/// 上一次更新帧率的时间/// /summaryprivate float m_lastUpdateShowTime 0f;/// summary/// 更新显示帧率的时间间隔/// /summaryprivate readonly float m_updateTime 0.05f;/// summary/// 帧数/// /summaryprivate int m_frames 0;/// summary/// 帧间间隔/// /summary//private float m_frameDeltaTime 0;private float m_FPS 0;//private Rect m_fps, m_dtime;//顶点数组private Vector3[] vertices;//顶点法线private Vector3[] normals;private MeshFilter meshFilter;private int i 0;private bool f false;private string test2 ;private int waitCount 0;private void Awake(){Application.targetFrameRate 30;moveRage2 moveRage * 2;moveRage2_1 moveRage * 2 - 1;fontStyle.normal.background null; //设置背景填充fontStyle.normal.textColor Color.red; //设置字体颜色fontStyle.fontSize 40;fontStyle.wordWrap true;c GetComponentCamera();msg Waiting ;Vector3 v1 new Vector3(5, 5, 5);Vector3 v2 new Vector3(5, 5, 3);test2 (v2 - v1).normalized.ToString();}void Start(){try{o GenerateMeshTest1();center c.transform.position;o.name d mesh;o.transform.position new Vector3(-5, -5, 20);o.transform.localScale new Vector3(10.0f, 10.0f, 10.0f);o.transform.rotation Quaternion.Euler(new Vector3(0, 45, 45));m_lastUpdateShowTime Time.realtimeSinceStartup;ready true;}catch (Exception e){err printException(e);}aText Resources.Load(type/two_sizes) as Texture;o.GetComponentMeshRenderer().material.mainTexture aText;#if UNITY_EDITORshowNormals();
#endif}private void OnGUI(){GUI.color Color.red;msg fps m_FPS / Application.targetFrameRate (err.Length1?(, err err):) waitCount (ready? waitCount : (waitCount));GUI.Label(new Rect(50, 10, 900, 100), test2, fontStyle);GUI.Label(new Rect(100, 100, 900, 100), [V07] msg, fontStyle);}// Update is called once per framevoid Update(){if (!ready) return;int ri i % (moveRage2);float x ri - moveRage;if (!f){x moveRage - ri;}if (ri moveRage2_1){f !f;}//o.transform.position new Vector3(x, x, 20);//Debug.Log(x);//o.transform.rotation Quaternion.Euler(new Vector3(0, 0, 0));/*Mesh mesh o.GetComponentMeshFilter().mesh;//mesh.Clear();Vector3[] vertices mesh.vertices;Vector3[] normals mesh.normals;for (var i 0; i vertices.Length; i){vertices[i] normals[i] * Mathf.Sin(Time.time);}mesh.vertices vertices;*/m_frames;if (Time.realtimeSinceStartup - m_lastUpdateShowTime m_updateTime){m_FPS m_frames / (Time.realtimeSinceStartup - m_lastUpdateShowTime);//m_frameDeltaTime (Time.realtimeSinceStartup - m_lastUpdateShowTime) / m_frames;m_frames 0;m_lastUpdateShowTime Time.realtimeSinceStartup;//Debug.Log(FPS: m_FPS 间隔: m_FrameDeltaTime);}i;}private GameObject GenerateMeshTest1(){GameObject obj new GameObject();meshFilter obj.AddComponentMeshFilter();//创建meshmesh new Mesh();meshFilter.mesh mesh;MeshRenderer renderer obj.AddComponentMeshRenderer();//标准材质Material mat new Material(Shader.Find(Legacy Shaders/Transparent/Diffuse));mat.color Color.white;renderer.material mat;//创建顶点和UVvertices new Vector3[6];Vector2[] uv new Vector2[6];vertices[0] new Vector3(0, 1, 0);//0vertices[1] new Vector3(1, 1, 0);//1vertices[2] new Vector3(1, 0, 0);//2vertices[3] new Vector3(0, 0, 0);//3vertices[4] new Vector3(0, 0, 1);//4vertices[5] new Vector3(1, 0, 1);//5-int k 0;uv[k%6] new Vector2(0, 1);uv[k % 6] new Vector2(1, 1);uv[k % 6] new Vector2(1, 0.5f);uv[k % 6] new Vector2(0,0.5f);uv[k % 6] new Vector2(0, 0);uv[k % 6] new Vector2(1, 0);mesh.vertices vertices;mesh.uv uv;//mat.mainTexture aText;int[] triangles new int[12];k 0;triangles[k] 3;triangles[k] 2;triangles[k] 5;triangles[k] 3;triangles[k] 5;triangles[k] 4; triangles[k] 0;triangles[k] 1;triangles[k] 2;triangles[k] 0;triangles[k] 2;triangles[k] 3;mesh.triangles triangles; //三角面mesh.RecalculateNormals(); //计算法线/*Vector3[] normals new Vector3[4];normals[0] Vector3.back;normals[1] Vector3.back;normals[2] Vector3.back;normals[3] Vector3.back;mesh.normals normals;*///mesh.SetIndices//mat.SetTexture()return obj;}public static string printException(Exception e){return \n\trs e.HResult ,\n\tmsg e.Message ,\n\tstack e.StackTrace \n------------------------------------\n;}#if UNITY_EDITORprivate void showNormals(){if (mesh ! null){//当前对象的操做从局部空间转换到世界空间 这样在下面的操作位置即可同步 否则位置是不会同步的Handles.matrix meshFilter.transform.localToWorldMatrix;Handles.color Color.green;int vertextCount mesh.vertices.Length;//采用从顶点的位置[法线的起点】到法线的终点位置既可以显示出当前顶点的法线for (int index 0; index vertextCount; index){Handles.DrawLine(vertices[index], vertices[index] normals[index]);}}}
#endif
}two_sizes.png是一张 宽高比为12的图片。 三角形之间的定义顺序不会影响贴图。但单个三角形三个顶点是逆时针则从外部可以看到贴图从内部看不到。反之亦然 顺时针之后从内部可见 如果把图片直接放到场景则两面都可见。
