u3d16用Cube擺一個圓并讓其轉(zhuǎn)動(附贈橢圓做法).doc

u3d16用Cube擺一個圓并讓其轉(zhuǎn)動(附贈橢圓做法)代碼清單如下:(圓-父子結(jié)構(gòu))下面的代碼是采用父子結(jié)構(gòu)的算法比較簡單，一般我們不采用！using UnityEngine;using System.Collections;public class CirCleTest : MonoBehaviour private float r=5;/定義一個半徑private float angle;/定義一個角度變量private float x0=0.0f;/定義初始的圓心的位置private float y0=0.0f;private float z0=0.0f;private ArrayList arr;/定義一個數(shù)組鏈表private float flo;/定義一個變量private GameObject zhuan;/ Use this for initializationvoid Start () /初始化我們定義的變量flo=0;angle=0;float hudu = 0;zhuan = new GameObject();for(int i=0;i6;i+)/循環(huán)我們創(chuàng)建的Cube確定他的xx yy 的位置float xx = x0+r*Mathf.Cos(hudu);/float yy = y0+r*Mathf.Sin(hudu);/確定其yy的位置我們做出的圓是樹立的float zz = z0+r*Mathf.Sin(hudu);/確定其zz的位置我們做出的圓是平鋪的GameObject cube = GameObject.CreatePrimitive(PrimitiveType.Cube);/cube.transform.rotation = Quaternion.Euler(0.0f,-angle,0.0f);/改變了cube的角度/cube.transform.localScale = new Vector3(1.0f,1.0f,1.0f);/改變其縮放比例/上面的yy 或者是zz改變這里也別忘了改變cube.transform.position = new Vector3(xx,0.0f,zz);cube.transform.parent = zhuan.transform;/設(shè)置cube的父親是zhuan/arr.Add(cube);angle +=60; /角度一次增加60度hudu = angle*Mathf.PI/180;/求其弧度/ Update is called once per framevoid Update () flo+;zhuan.transform.rotation=Quaternion.Euler(0.0f,flo,0.0f);/讓我們創(chuàng)建的這個圓不停地圍繞圓心旋轉(zhuǎn)效果圖：把兩行藍色代碼打開就是下面的效果當(dāng)然for循環(huán)應(yīng)該小于60；angle 每次加6下面的代碼是采用精確的算法應(yīng)用比較廣，一般我們使用下面的方法：上面的代碼進行了詳細的解釋這下面的代碼應(yīng)該會很明白不用多說什么效果圖和上面的一樣！代碼清單如下:(圓-算法)using UnityEngine;using System.Collections;public class CirCleTest : MonoBehaviour private float r=5;private float angle;private float x0=0.0f;private float y0=0.0f;private float z0=0.0f;private ArrayList arr;/ Use this for initializationvoid Start () angle=0;float hudu = 0;arr = new ArrayList();for(int i=0;i6;i+)float xx = x0+r*Mathf.Cos(hudu);float zz = z0+r*Mathf.Sin(hudu);GameObject cube = GameObject.CreatePrimitive(PrimitiveType.Cube);cube.transform.position = new Vector3(xx,0.0f,zz);arr.Add(cube);angle +=60;hudu = angle*Mathf.PI/180;angle=0;/ Update is called once per framevoid Update () float tmpAngle = angle+;for(int i=0;i6;i+)float hudu = tmpAngle*Mathf.PI/180;float xx = x0+r*Mathf.Cos(hudu);float zz = z0+r*Mathf.Sin(hudu);GameObject gobj = (GameObject)arri;gobj.transform.position = new Vector3(xx,0.0f,zz);tmpAngle += 60;下面我們要做的是通過算法做出橢圓的效果，上面的代碼進行了詳細的解釋這下面的代碼理解同樣是沒有問題的代碼清單如下:(橢圓-算法)using UnityEngine;using System.Collections;public class DrawTuoYuan : MonoBehaviour private float x0;private float y0;private float z0;private float RR;private float rr;/ Use this for initializationvoid Start () x0 = 0;y0 = 0;z0 = 0;rr = 3;RR = 5;GameObject cube = GameObject.Find(Cube);float angle=0;for(int i=0;i72;i+)GameObject cube1 = (GameObject)Instantiate(cube);float hudu = (angle*Mathf.PI)/180;float xx = x0 + RR*Mathf.Cos(hudu);/float yy = y0 + rr*Mathf.Sin(hudu);float zz = z0 + rr*Mathf.Sin(hudu);cube1.transform.p