在查找如何ui显示3d模型发现Camera的TargetTexture挺简便的，可惜一直没找导如何去渲染多个3D模型，用多个camera去做效果不是理想，于是自己写了个，但是有上限限制,还有更好的方法请大家指正
对于还不会使用camera去实现的可以用以下链接
设计思路：将所有模型放在固定位置上用一个C
amera，记录下一个key,TargetTexture 导在一张Texture上，通过key值去裁切RawImage 的UVRect,得到相应的图
CameraManger 处理模型添加，及位置摆放
using System;
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
/// <summary>
/// 3d模型展示添加管理
/// </summary>
public class CameraManger : MonoBehaviour
{
[Tooltip("横向模型显示数量")]
public int numberWidth = 5;
[Tooltip("纵向模型显示数量")]
public int numberHeight = 5;
static GameObject gameRuning = null;
public static CameraManger Instance
{
get
{
if (gameRuning == null)
{
return null;
}
return gameRuning.GetComponent<CameraManger>();
}
}
private void Awake()
{
gameRuning = gameObject;
GameObject obj = GameObject.Instantiate(Resources.Load("Model3d/Cat_Warrior") as GameObject);
m_Object = obj;
m_Object.SetActive(false);
}
GameObject m_Object;
//位置坐标
Dictionary<int, Vector3> m_Vector3List = new Dictionary<int, Vector3>();
//位置是否被使用
Dictionary<int, bool> m_Pos = new Dictionary<int, bool>();
//位置对应的3d模型
Dictionary<int, Transform> m_Trans = new Dictionary<int, Transform>();
private void Start()
{
//初始化位置信息（模型以底部中心原点）
//你设置的Camera size大小
float _size = 6f;
//模型对应镜头位置存储下来
for (int i = 0; i < numberHeight; i++)
{
for (int j = 0; j < numberWidth; j++)
{
float _x = -_size+(_size*2/(numberWidth))*(j+0.5f);
float _y = -_size + (_size * 2 / (numberHeight)) * (i);
Vector3 _ve3 = new Vector3(_x, _y, 12f);
m_Vector3List.Add((i* numberWidth + j + 1), _ve3);
m_Pos.Add((i * numberWidth + j + 1), true);
}
}
GameObject obj = GameObject.Instantiate(Resources.Load("Model3d/UI") as GameObject);
}
/// <summary>
/// 添加3d模型展示
/// </summary>
public int Add3DModel()
{
foreach (var var in m_Pos)
{
if (var.Value)
{
Vector3 vector3 = m_Vector3List[var.Key];
m_Pos[var.Key] = false;
GameObject gameyouz = GameObject.Instantiate(m_Object);
gameyouz.SetActive(true);
gameyouz.transform.SetParent(transform);
gameyouz.transform.localPosition = vector3;
gameyouz.transform.rotation = Quaternion.Euler(0f, 180f, 0f);
m_Trans.Add(var.Key, gameyouz.transform);
gameyouz.name = var.Key.ToString();
return var.Key;
}
}
return 0;
}
/// <summary>
/// 获取模型
/// </summary>
/// <param name="key"></param>
/// <returns></returns>
public Transform Get3DModel(int key)
{
return m_Trans[key];
}
/// <summary>
/// 删除模型展示
/// </summary>
/// <param name="key">模型key</param>
public void Remove3DModel(int key)
{
Transform game = m_Trans[key];
m_Trans.Remove(key);
m_Pos[key] = true;
GameObject.Destroy(game.gameObject);
}
}
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
/// <summary>
/// 模型ui显示
/// </summary>
public class TextureRotate : MonoBehaviour {
Transform m_Horse;
RawImage m_rawImage;
public int m_key=-1; //模型代表key
private void Start()
{
Init();
}
private void Init()
{
EventTriggerListener.Get(transform).onDown += (go) =>
{
m_xz = true;
m_FrontPoint = Input.mousePosition;
m_NewPoint = Input.mousePosition;
};
EventTriggerListener.Get(transform).onUp += (go) =>
{
m_xz = false;
};
}
/// <summary>
/// 显示3d模型
/// </summary>
public void Show3DModel()
{
m_key = CameraManger.Instance.Add3DModel();
m_Horse = CameraManger.Instance.Get3DModel(m_key);
m_rawImage = transform.GetComponent<RawImage>();
//图片截取
float _w = CameraManger.Instance.numberWidth;
float _h = CameraManger.Instance.numberHeight;
float y = (int)((m_key - 1) / _w) / _h;
float x = (m_key - 1) % _w / _w;
Rect r = new Rect(x, y, 1f / _w, 1f / _h);
m_rawImage.uvRect = r;
m_rawImage.SetNativeSize();
}
private void OnEnable()
{
if (m_key == -1)
{
m_xz = false;
m_key = CameraManger.Instance.Add3DModel();
m_Horse = CameraManger.Instance.Get3DModel(m_key);
m_rawImage = transform.GetComponent<RawImage>();
//图片截取
float _w = CameraManger.Instance.numberWidth;
float _h = CameraManger.Instance.numberHeight;
float y = (int)((m_key - 1) / _w) / _h;
float x = (m_key - 1) % _w / _w;
Rect r = new Rect(x, y, 1f / _w, 1f / _h);
m_rawImage.uvRect = r;
m_rawImage.SetNativeSize();
}
}
private void OnDisable()
{
if (CameraManger.Instance!=null&& m_key!=-1)
{
CameraManger.Instance.Remove3DModel(m_key);
m_key = -1;
//m_horseData = null;
}
}
public RaycastHit hit;
//Vector3 m_StartPoint = new Vector3(); //上一帧位置
Vector3 m_FrontPoint = new Vector3(); //上一帧位置
Vector3 m_NewPoint = new Vector3(); //当前帧位置
bool m_xz = false; //是否进入旋转
float _chazhi = 0f;
void Update()
{
if (m_xz && Input.GetMouseButton(0))
{
m_FrontPoint = m_NewPoint;
m_NewPoint = Input.mousePosition;
float dt = m_NewPoint.x - m_FrontPoint.x;
_chazhi += Mathf.Abs(dt);
m_Horse.Rotate(0, -dt, 0);
}
}
}
using UnityEngine;
using System.Collections;
using UnityEngine.EventSystems;
/*
* 自定义按钮回掉事件 例如 EventTriggerListener.Get(gameobject).onUp += (go) =>{ };
*/
public class EventTriggerListener : UnityEngine.EventSystems.EventTrigger
{
public delegate void VoidDelegate(GameObject go);
public delegate void BoolDelegate(GameObject go, bool state);
public delegate void FloatDelegate(GameObject go, float delta);
public delegate void IntDelegate(GameObject go, int delta);
public delegate void VectorDelegate(GameObject go, Vector2 delta);
public delegate void ObjectDelegate(GameObject go, GameObject obj);
public delegate void KeyCodeDelegate(GameObject go, KeyCode key);
public delegate void ParamsDelegate(GameObject go, params object[] os);
public VoidDelegate onClick;
public VoidDelegate onDown;
public VoidDelegate onEnter;
public VoidDelegate onExit;
public VoidDelegate onUp;
public VoidDelegate onSelect;
public VoidDelegate onUpdateSelect;
public VoidDelegate onDrag;
public IntDelegate onClickInt;
public IntDelegate onDownInt;
public ParamsDelegate onClickParams;
public ParamsDelegate onDownParams;
static public EventTriggerListener Get(GameObject go)
{
EventTriggerListener listener = go.GetComponent<EventTriggerListener>();
if (listener == null) listener = go.AddComponent<EventTriggerListener>();
return listener;
}
static public EventTriggerListener Get(Transform transform)
{
EventTriggerListener listener = transform.GetComponent<EventTriggerListener>();
if (listener == null) listener = transform.gameObject.AddComponent<EventTriggerListener>();
return listener;
}
int m_data;
static public EventTriggerListener Get(GameObject go,int delta)
{
EventTriggerListener listener = go.GetComponent<EventTriggerListener>();
if (listener == null) listener = go.AddComponent<EventTriggerListener>();
listener.m_data = delta;
return listener;
}
object[] m_paramsObj;
static public EventTriggerListener Getobject(GameObject go, params object[] os)
{
EventTriggerListener listener = go.GetComponent<EventTriggerListener>();
if (listener == null) listener = go.AddComponent<EventTriggerListener>();
listener.m_paramsObj = os;
return listener;
}
public override void OnPointerClick(PointerEventData eventData)
{
if (onClick != null) onClick(gameObject);
if (onClickInt != null) onClickInt(gameObject, m_data);
if (onClickParams != null) onClickParams(gameObject, m_paramsObj);
}
public override void OnPointerDown(PointerEventData eventData)
{
if (onDown != null) onDown(gameObject);
if (onDownInt != null) onDownInt(gameObject, m_data);
if (onDownParams != null) onDownParams(gameObject, m_paramsObj);
}
public override void OnPointerEnter(PointerEventData eventData)
{
if (onEnter != null) onEnter(gameObject);
}
public override void OnPointerExit(PointerEventData eventData)
{
if (onExit != null) onExit(gameObject);
}
public override void OnPointerUp(PointerEventData eventData)
{
if (onUp != null) onUp(gameObject);
}
public override void OnSelect(BaseEventData eventData)
{
if (onSelect != null) onSelect(gameObject);
}
public override void OnUpdateSelected(BaseEventData eventData)
{
if (onUpdateSelect != null) onUpdateSelect(gameObject);
}
public override void OnDrag(PointerEventData eventData)
{
if (onDrag != null) onDrag(gameObject);
}
}