Unity 3D 用脚本来操作游戏对象4（平移、旋转与缩放）

谁借莪１个温暖的怀抱￠ 2021-10-18 09:46 650阅读 0赞

**目录**

平移游戏对象

旋转游戏对象

缩放游戏对象

--------------------

在3D世界里，任何一个游戏对象在创建的时候都会附带transform（变换）组件，并且无法删除。

任何一个模型的三维坐标都保存在Vector3容器中，该容器记录模型在x轴、y轴、z轴方向的坐标。

# 平移游戏对象 #

transform.Translate()方法，唯一参数为平移的方向

示例：

using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    
    public class E4_08 : MonoBehaviour {
    
        GameObject obj;
    	void Start () {
            obj = GameObject.Find("Cube");
    	}
    	
    	void OnGUI () {
    		if(GUILayout.Button("向前移动",GUILayout.Height(50)))
            {
                obj.transform.Translate(Vector3.forward * Time.deltaTime);
            }
            if (GUILayout.Button("向后移动", GUILayout.Height(50)))
            {
                obj.transform.Translate(Vector3.back * Time.deltaTime);
            }
            if (GUILayout.Button("向左移动", GUILayout.Height(50)))
            {
                obj.transform.Translate(Vector3.left * Time.deltaTime);
            }
            if (GUILayout.Button("向右移动", GUILayout.Height(50)))
            {
                obj.transform.Translate(Vector3.right * Time.deltaTime);
            }
            GUILayout.Label("立方体的位置："+obj.transform.position);
    	}
    }

# ![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM5NTg4MDAz_size_16_color_FFFFFF_t_70][] #

# 旋转游戏对象 #

旋转方式分为**自身旋转**和**围绕某点旋转**

*  transform.Rotate()：该方法用于自身旋转，参数为旋转速度与方向
 *  transform.RotateAround()：该方法用于围绕某一点旋转
 *  Vector3.right：x轴方向
 *  Vector3.up：y轴方向
 *  Vector3.forward：z轴方向

示例：

using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    
    public class E4_08rotate : MonoBehaviour {
    
        GameObject objCube;
        GameObject objCylinder;
        int speed = 100;    //旋转速度
    	void Start () {
            objCube = GameObject.Find("Cube");
            objCylinder = GameObject.Find("Cylinder");
    	}
    	
    	void OnGUI()
        {
            if(GUILayout.Button("立方体沿x轴旋转",GUILayout.Height(50)))
            {
                objCube.transform.Rotate(Vector3.right * Time.deltaTime * speed);
            }
            if (GUILayout.Button("立方体沿y轴旋转", GUILayout.Height(50)))
            {
                objCube.transform.Rotate(Vector3.up * Time.deltaTime * speed);
            }
            if (GUILayout.Button("立方体沿z轴旋转", GUILayout.Height(50)))
            {
                objCube.transform.Rotate(Vector3.forward * Time.deltaTime * speed);
            }
            if (GUILayout.Button("立方体围绕圆柱体旋转", GUILayout.Height(50)))
            {
                objCube.transform.RotateAround(objCylinder.transform.position,Vector3.up ,Time.deltaTime * speed);
            }
            GUILayout.Label("立方体旋转角度："+objCube.transform.rotation);
        }
    }

# ![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM5NTg4MDAz_size_16_color_FFFFFF_t_70 1][] #

# 缩放游戏对象 #

缩放分为沿X、Y、Z轴缩放

示例：

using System.Collections;
    using System.Collections.Generic;
    using UnityEngine;
    
    public class E4_08scale : MonoBehaviour {
    
        GameObject obj;
        float x = 1.0f;
        float y = 1.0f;
        float z = 1.0f;
    	void Start () {
            obj = GameObject.Find("Cube");
    	}
        void OnGUI()
        {
            GUILayout.Label("x轴缩放");
            x = GUILayout.HorizontalSlider(x,1.0f,2.0f,GUILayout.Width(150));
    
            GUILayout.Label("y轴缩放");
            y = GUILayout.HorizontalSlider(y, 1.0f, 2.0f, GUILayout.Width(150));
    
            GUILayout.Label("x轴缩放");
            z = GUILayout.HorizontalSlider(z, 1.0f, 2.0f, GUILayout.Width(150));
    
            obj.transform.localScale = new Vector3(x,y,z);
        }
    }

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM5NTg4MDAz_size_16_color_FFFFFF_t_70 2][]

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[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzM5NTg4MDAz_size_16_color_FFFFFF_t_70 2]: /images/20211018/1a50265542274af5bb3892fdbfae6dd9.png